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Comparing deliantra/server/server/monster.C (file contents):
Revision 1.29 by root, Thu May 3 09:26:45 2007 UTC vs.
Revision 1.76 by root, Sun Nov 29 09:41:28 2009 UTC

1/* 1/*
2 * CrossFire, A Multiplayer game 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
… …
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) 92 && !QUERY_FLAG (npc->enemy, FLAG_GENERATOR)
92 && npc->enemy->type != PLAYER 93 && npc->enemy->type != PLAYER
93 && npc->enemy->type != GOLEM) 94 && npc->enemy->type != GOLEM)
94 npc->enemy = NULL; 95 npc->enemy = 0;
95
96 } 96 }
97
97 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : NULL; 98 return can_detect_enemy (npc, npc->enemy, rv) ? npc->enemy : 0;
98} 99}
99 100
100/* Returns the nearest living creature (monster or generator). 101/* Returns the nearest living creature (monster or generator).
101 * Modified to deal with tiled maps properly. 102 * Modified to deal with tiled maps properly.
102 * 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
… …
145 } 146 }
146 147
147 return 0; 148 return 0;
148} 149}
149 150
150
151/* 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
152 * our caller will find the information useful. 152 * our caller will find the information useful.
153 * Currently, only move_monster calls this function. 153 * Currently, only move_monster calls this function.
154 * Fix function so that we always make calls to get_rangevector 154 * Fix function so that we always make calls to get_rangevector
155 * 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
156 * many cases. 156 * many cases.
157 */ 157 */
158 158static object *
159object *
160find_enemy (object *npc, rv_vector * rv) 159find_enemy (object *npc, rv_vector * rv)
161{ 160{
162 object *attacker, *tmp = NULL; 161 object *attacker, *tmp = NULL;
163 162
164 attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */ 163 attacker = npc->attacked_by; /* save this for later use. This can be a attacker. */
… …
169 { 168 {
170 tmp = find_nearest_living_creature (npc); 169 tmp = find_nearest_living_creature (npc);
171 170
172 if (tmp) 171 if (tmp)
173 get_rangevector (npc, tmp, rv, 0); 172 get_rangevector (npc, tmp, rv, 0);
173
174 return tmp; 174 return tmp;
175 } 175 }
176 176
177 /* Here is the main enemy selection. 177 /* Here is the main enemy selection.
178 * 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
… …
198 /* we check our old enemy. */ 198 /* we check our old enemy. */
199 if (!(tmp = check_enemy (npc, rv))) 199 if (!(tmp = check_enemy (npc, rv)))
200 { 200 {
201 if (attacker) /* if we have an attacker, check him */ 201 if (attacker) /* if we have an attacker, check him */
202 { 202 {
203 /* TODO: thats not finished */ 203 /* TODO: that's not finished */
204 /* 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 */
205 205
206 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 */
207 (QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) || 207 (QUERY_FLAG (npc, FLAG_FRIENDLY) && QUERY_FLAG (attacker, FLAG_FRIENDLY)) ||
208 (!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)))
209 CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */ 209 CLEAR_FLAG (npc, FLAG_SLEEP); /* skip it, but lets wakeup */
210 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... */
211 { 211 {
212 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! */
213 npc->enemy = attacker; 213 npc->enemy = attacker;
214 return attacker; /* yes, we face our attacker! */ 214 return attacker; /* yes, we face our attacker! */
215 } 215 }
… …
231/* Sees if this monster should wake up. 231/* Sees if this monster should wake up.
232 * Currently, this is only called from move_monster, and 232 * Currently, this is only called from move_monster, and
233 * if enemy is set, then so should be rv. 233 * if enemy is set, then so should be rv.
234 * returns 1 if the monster should wake up, 0 otherwise. 234 * returns 1 if the monster should wake up, 0 otherwise.
235 */ 235 */
236 236static int
237int
238check_wakeup (object *op, object *enemy, rv_vector * rv) 237check_wakeup (object *op, object *enemy, rv_vector *rv)
239{ 238{
240 int radius = op->stats.Wis > MIN_MON_RADIUS ? op->stats.Wis : MIN_MON_RADIUS;
241
242 /* Trim work - if no enemy, no need to do anything below */ 239 /* Trim work - if no enemy, no need to do anything below */
243 if (!enemy) 240 if (!enemy)
244 return 0; 241 return 0;
245 242
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])
246 /* blinded monsters can only find nearby objects to attack */ 249 /* blinded monsters can only find nearby objects to attack */
247 if (QUERY_FLAG (op, FLAG_BLIND))
248 radius = MIN_MON_RADIUS; 250 radius = MIN_MON_RADIUS;
249 251 else if (op->map
252 && !enemy->invisible
253 && !stand_in_light (enemy)
254 && (!op->flag[FLAG_SEE_IN_DARK] || !op->flag [FLAG_SEE_INVISIBLE]))
250 /* This covers the situation where the monster is in the dark 255 /* This covers the situation where the monster is in the dark
251 * 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
252 * glowing!) then the monster has trouble finding the enemy. 257 * glowing!) then the monster has trouble finding the enemy.
253 * 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
254 * the dark. */ 259 * the dark. */
260 radius = min (radius, MIN_MON_RADIUS + MAX_DARKNESS - op->map->darklevel ());
255 261
256 else if (op->map && op->map->darkness > 0 && enemy && !enemy->invisible && 262 if (enemy->flag [FLAG_STEALTH])
257 !stand_in_light (enemy) && (!QUERY_FLAG (op, FLAG_SEE_IN_DARK) || !QUERY_FLAG (op, FLAG_SEE_INVISIBLE))) 263 radius = radius / 2 + 1;
258 {
259 int dark = radius / (op->map->darkness);
260
261 radius = (dark > MIN_MON_RADIUS) ? (dark + 1) : MIN_MON_RADIUS;
262 }
263 else if (!QUERY_FLAG (op, FLAG_SLEEP))
264 return 1;
265 264
266 /* 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
267 * for that. 266 * for that.
268 */ 267 */
269 if (rv->distance < (unsigned int) (QUERY_FLAG (enemy, FLAG_STEALTH) ? (radius / 2) + 1 : radius)) 268 if (rv->distance <= radius)
270 { 269 {
271 CLEAR_FLAG (op, FLAG_SLEEP); 270 CLEAR_FLAG (op, FLAG_SLEEP);
272 return 1; 271 return 1;
273 } 272 }
273
274 return 0; 274 return 0;
275} 275}
276 276
277int 277static int
278move_randomly (object *op) 278move_randomly (object *op)
279{ 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;
280 int i; 298 int i;
281 299
282 /* Give up to 15 chances for a monster to move randomly */ 300 if (!can_pick (monster, item))
283 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)
284 { 311 {
285 if (move_object (op, rndm (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)))
286 return 1; 376 return 1;
287 } 377
288 return 0; 378 return 0;
289} 379}
290 380
291/* 381/*
292 * 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.
293 */ 395 */
294 396static void
295int 397monster_check_pickup (object *monster)
296move_monster (object *op)
297{ 398{
298 int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */ 399 object *tmp, *next;
299 object *owner, *enemy, *part, *oph = op;
300 rv_vector rv;
301 400
302 /* Monsters not on maps don't do anything. These monsters are things 401 for (tmp = monster->below; tmp != NULL; tmp = next)
303 * Like royal guards in city dwellers inventories.
304 */
305 if (!op->map)
306 return 0;
307
308 /* for target facing, we copy this value here for fast access */
309 if (oph->head) /* force update the head - one arch one pic */
310 oph = oph->head;
311
312 if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
313 enemy = op->enemy = NULL;
314 else if ((enemy = find_enemy (op, &rv)))
315 /* we have an enemy, just tell him we want him dead */
316 enemy->attacked_by = op; /* our ptr */
317
318 /* generate hp, if applicable */
319 if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
320 { 402 {
321 403 next = tmp->below;
322 /* last heal is in funny units. Dividing by speed puts 404 if (monster_can_pick (monster, tmp))
323 * the regeneration rate on a basis of time instead of
324 * #moves the monster makes. The scaling by 8 is
325 * to capture 8th's of a hp fraction regens
326 * 405 {
327 * Cast to sint32 before comparing to maxhp since otherwise an (sint16) 406 tmp->remove ();
328 * 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.
329 */ 412 */
330 413 if (next && next->destroyed ())
331 op->last_heal += (int) ((float) (8 * op->stats.Con) / FABS (op->speed));
332 op->stats.hp = MIN ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
333 op->last_heal %= 32;
334
335 /* So if the monster has gained enough HP that they are no longer afraid */
336 if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short) (((float) op->run_away / (float) 100) * (float) op->stats.maxhp))
337 CLEAR_FLAG (op, FLAG_RUN_AWAY);
338
339 if (op->stats.hp > op->stats.maxhp)
340 op->stats.hp = op->stats.maxhp;
341 }
342
343 /* generate sp, if applicable */
344 if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
345 {
346
347 /* last_sp is in funny units. Dividing by speed puts
348 * the regeneration rate on a basis of time instead of
349 * #moves the monster makes. The scaling by 8 is
350 * to capture 8th's of a sp fraction regens
351 *
352 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
353 * overflow might produce monsters with negative sp.
354 */
355
356 op->last_sp += (int) ((float) (8 * op->stats.Pow) / FABS (op->speed));
357 op->stats.sp = MIN (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
358 op->last_sp %= 128;
359 }
360
361 /* this should probably get modified by many more values.
362 * (eg, creatures resistance to fear, level, etc. )
363 */
364 if (QUERY_FLAG (op, FLAG_SCARED) && !(rndm (20)))
365 {
366 CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
367 }
368
369 if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
370 return QUERY_FLAG (op, FLAG_FREED);
371
372 if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
373 ((op->map->darkness > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
374 {
375 if (!check_wakeup (op, enemy, &rv))
376 return 0; 414 return;
377 }
378
379 /* check if monster pops out of hidden spot */
380 if (op->hide)
381 do_hidden_move (op);
382
383 if (op->pick_up)
384 monster_check_pickup (op);
385
386 if (op->will_apply)
387 monster_apply_below (op); /* Check for items to apply below */
388
389 /* If we don't have an enemy, do special movement or the like */
390 if (!enemy)
391 { 415 }
392 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK)) 416}
393 { 417
394 op->destroy (); 418/*
395 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)
396 } 433 {
397 434 case T_HANDLE:
398 /* Probably really a bug for a creature to have both
399 * stand still and a movement type set.
400 */
401 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
402 {
403 if (op->attack_movement & HI4)
404 {
405 switch (op->attack_movement & HI4)
406 {
407 case (PETMOVE):
408 pet_move (op);
409 break;
410
411 case (CIRCLE1):
412 circ1_move (op);
413 break;
414
415 case (CIRCLE2):
416 circ2_move (op);
417 break;
418
419 case (PACEV):
420 pace_movev (op);
421 break;
422
423 case (PACEH):
424 pace_moveh (op);
425 break;
426
427 case (PACEV2):
428 pace2_movev (op);
429 break;
430
431 case (PACEH2):
432 pace2_moveh (op);
433 break;
434
435 case (RANDO):
436 rand_move (op);
437 break;
438
439 case (RANDO2):
440 move_randomly (op);
441 break;
442 }
443 return 0;
444 }
445 else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
446 (void) move_randomly (op);
447
448 } /* stand still */
449 return 0;
450 } /* no enemy */
451
452 /* We have an enemy. Block immediately below is for pets */
453 if ((op->attack_movement & HI4) == PETMOVE
454 && (owner = op->owner) != NULL
455 && !on_same_map (op, owner)
456 && !owner->flag [FLAG_REMOVED])
457 return follow_owner (op, owner);
458
459 /* doppleganger code to change monster facing to that of the nearest
460 * player. Hmm. The code is here, but no monster in the current
461 * arch set uses it.
462 */
463 if ((op->race != NULL) && strcmp (op->race, "doppleganger") == 0)
464 {
465 op->face = enemy->face;
466 op->name = enemy->name;
467 }
468
469 /* Calculate range information for closest body part - this
470 * is used for the 'skill' code, which isn't that smart when
471 * it comes to figuring it out - otherwise, giants throw boulders
472 * into themselves.
473 */
474 get_rangevector (op, enemy, &rv, 0);
475
476 /* Move the check for scared up here - if the monster was scared,
477 * we were not doing any of the logic below, so might as well save
478 * a few cpu cycles.
479 */
480 if (!QUERY_FLAG (op, FLAG_SCARED))
481 {
482 rv_vector rv1;
483
484 /* now we test every part of an object .... this is a real ugly piece of code */
485 for (part = op; part; part = part->more)
486 {
487 get_rangevector (part, enemy, &rv1, 0x1);
488 dir = rv1.direction;
489
490 /* hm, not sure about this part - in original was a scared flag here too
491 * but that we test above... so can be old code here
492 */
493 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
494 dir = absdir (dir + 4);
495 if (QUERY_FLAG (op, FLAG_CONFUSED))
496 dir = absdir (dir + rndm (3) + rndm (3) - 2);
497
498 if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(rndm (3)))
499 {
500 if (monster_cast_spell (op, part, enemy, dir, &rv1))
501 return 0;
502 }
503
504 if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(rndm (3)))
505 {
506 if (monster_use_scroll (op, part, enemy, dir, &rv1))
507 return 0;
508 }
509
510 if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(rndm (3)))
511 {
512 if (monster_use_range (op, part, enemy, dir))
513 return 0;
514 }
515 if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(rndm (3)))
516 {
517 if (monster_use_skill (op, rv.part, enemy, rv.direction))
518 return 0;
519 }
520 if (QUERY_FLAG (op, FLAG_READY_BOW) && !(rndm (2)))
521 {
522 if (monster_use_bow (op, part, enemy, dir))
523 return 0;
524 }
525 } /* for processing of all parts */
526 } /* If not scared */
527
528
529 part = rv.part;
530 dir = rv.direction;
531
532 if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
533 dir = absdir (dir + 4);
534
535 if (QUERY_FLAG (op, FLAG_CONFUSED))
536 dir = absdir (dir + rndm (3) + rndm (3) - 2);
537
538 pre_att_dir = dir; /* remember the original direction */
539
540 if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
541 {
542 switch (op->attack_movement & LO4)
543 {
544 case DISTATT: 435 case TRIGGER:
545 dir = dist_att (dir, op, enemy, part, &rv); 436 if (monster->will_apply & 1)
437 manual_apply (monster, tmp, 0);
546 break; 438 break;
547 439
548 case RUNATT: 440 case TREASURE:
549 dir = run_att (dir, op, enemy, part, &rv); 441 if (monster->will_apply & 2)
442 manual_apply (monster, tmp, 0);
550 break; 443 break;
551 444
552 case HITRUN:
553 dir = hitrun_att (dir, op, enemy);
554 break;
555
556 case WAITATT:
557 dir = wait_att (dir, op, enemy, part, &rv);
558 break;
559
560 case RUSH: /* default - monster normally moves towards player */
561 case ALLRUN:
562 break;
563
564 case DISTHIT:
565 dir = disthit_att (dir, op, enemy, part, &rv);
566 break;
567
568 case WAIT2:
569 dir = wait_att2 (dir, op, enemy, part, &rv);
570 break;
571
572 default:
573 LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
574 }
575 }
576
577 if (!dir)
578 return 0;
579
580 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
581 {
582 if (move_object (op, dir)) /* Can the monster move directly toward player? */
583 { 445 }
584 /* elmex: Turn our monster after it moved if it has DISTATT attack */ 446 if (QUERY_FLAG (tmp, FLAG_IS_FLOOR))
585 if ((op->attack_movement & LO4) == DISTATT) 447 break;
586 op->direction = pre_att_dir;
587
588 return 0;
589 }
590
591 if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
592 {
593
594 /* Try move around corners if !close */
595 int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || RANDOM () & 1) ? 1 : 2;
596
597 for (diff = 1; diff <= maxdiff; diff++)
598 {
599 /* try different detours */
600 int m = 1 - (RANDOM () & 2); /* Try left or right first? */
601
602 if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
603 return 0;
604 }
605 }
606 } /* if monster is not standing still */
607
608 /* elmex: Turn our monster after it moved if it has DISTATT attack */
609 if ((op->attack_movement & LO4) == DISTATT)
610 op->direction = pre_att_dir;
611
612 /*
613 * Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
614 * direction if they can't move away.
615 */
616 if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
617 if (move_randomly (op))
618 return 0;
619
620 /*
621 * Try giving the monster a new enemy - the player that is closest
622 * to it. In this way, it won't just keep trying to get to a target
623 * that is inaccessible.
624 * This could be more clever - it should go through a list of several
625 * enemies, as it is now, you could perhaps get situations where there
626 * are two players flanking the monster at close distance, but which
627 * the monster can't get to, and a third one at a far distance that
628 * the monster could get to - as it is, the monster won't look at that
629 * third one.
630 */
631 if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
632 { 448 }
633 object *nearest_player = get_nearest_player (op);
634
635 if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
636 {
637 op->enemy = NULL;
638 enemy = nearest_player;
639 }
640 }
641
642 if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
643 {
644 /* The adjustement to wc that was here before looked totally bogus -
645 * since wc can in fact get negative, that would mean by adding
646 * the current wc, the creature gets better? Instead, just
647 * add a fixed amount - nasty creatures that are runny away should
648 * still be pretty nasty.
649 */
650 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
651 {
652 part->stats.wc += 10;
653 (void) skill_attack (enemy, part, 0, NULL, NULL);
654 part->stats.wc -= 10;
655 }
656 else
657 (void) skill_attack (enemy, part, 0, NULL, NULL);
658 } /* if monster is in attack range */
659
660 if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
661 return 1;
662
663 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
664 {
665 op->remove ();
666 op->destroy ();
667 return 1;
668 }
669 return 0;
670}
671
672int
673can_hit (object *ob1, object *ob2, rv_vector * rv)
674{
675 object *more;
676 rv_vector rv1;
677
678 if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(rndm (3)))
679 return 0;
680
681 if (abs (rv->distance_x) < 2 && abs (rv->distance_y) < 2)
682 return 1;
683
684 /* check all the parts of ob2 - just because we can't get to
685 * its head doesn't mean we don't want to pound its feet
686 */
687 for (more = ob2->more; more != NULL; more = more->more)
688 {
689 get_rangevector (ob1, more, &rv1, 0);
690 if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
691 return 1;
692 }
693 return 0;
694
695} 449}
696 450
697/* Returns 1 is monster should cast spell sp at an enemy 451/* Returns 1 is monster should cast spell sp at an enemy
698 * Returns 0 if the monster should not cast this spell. 452 * Returns 0 if the monster should not cast this spell.
699 * 453 *
… …
707 * 461 *
708 * 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,
709 * 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,
710 * the right type of healing spell could be useful. 464 * the right type of healing spell could be useful.
711 */ 465 */
712
713static int 466static int
714monster_should_cast_spell (object *monster, object *spell_ob) 467monster_should_cast_spell (object *monster, object *spell_ob)
715{ 468{
716 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET || 469 if (spell_ob->subtype == SP_BOLT || spell_ob->subtype == SP_BULLET ||
717 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE || 470 spell_ob->subtype == SP_EXPLOSION || spell_ob->subtype == SP_CONE ||
718 spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE || 471 spell_ob->subtype == SP_BOMB || spell_ob->subtype == SP_SMITE ||
719 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 ||
720 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 ||
721 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)
722
723 return 1; 475 return 1;
724 476
725 return 0; 477 return 0;
726} 478}
727 479
728
729#define MAX_KNOWN_SPELLS 20
730
731/* Returns a randomly selected spell. This logic is still
732 * less than ideal. This code also only seems to deal with
733 * wizard spells, as the check is against sp, and not grace.
734 * can mosnters know cleric spells?
735 */
736object *
737monster_choose_random_spell (object *monster)
738{
739 object *altern[MAX_KNOWN_SPELLS];
740 object *tmp;
741 int i = 0;
742
743 for (tmp = monster->inv; tmp != NULL; tmp = tmp->below)
744 if (tmp->type == SPELLBOOK || tmp->type == SPELL)
745 {
746 /* Check and see if it's actually a useful spell.
747 * If its a spellbook, the spell is actually the inventory item.
748 * if it is a spell, then it is just the object itself.
749 */
750 if (monster_should_cast_spell (monster, (tmp->type == SPELLBOOK) ? tmp->inv : tmp))
751 {
752 altern[i++] = tmp;
753 if (i == MAX_KNOWN_SPELLS)
754 break;
755 }
756 }
757 if (!i)
758 return NULL;
759 return altern[RANDOM () % i];
760}
761
762/* This checks to see if the monster should cast a spell/ability.
763 * it returns true if the monster casts a spell, 0 if he doesn't.
764 * head is the head of the monster.
765 * part is the part of the monster we are checking against.
766 * pl is the target.
767 * dir is the direction to case.
768 * rv is the vector which describes where the enemy is.
769 */
770
771int
772monster_cast_spell (object *head, object *part, object *pl, int dir, rv_vector * rv)
773{
774 object *spell_item;
775 object *owner;
776 rv_vector rv1;
777
778 /* If you want monsters to cast spells over friends, this spell should
779 * be removed. It probably should be in most cases, since monsters still
780 * don't care about residual effects (ie, casting a cone which may have a
781 * clear path to the player, the side aspects of the code will still hit
782 * other monsters)
783 */
784 if (!(dir = path_to_player (part, pl, 0)))
785 return 0;
786
787 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
788 {
789 get_rangevector (head, owner, &rv1, 0x1);
790 if (dirdiff (dir, rv1.direction) < 2)
791 {
792 return 0; /* Might hit owner with spell */
793 }
794 }
795
796 if (QUERY_FLAG (head, FLAG_CONFUSED))
797 dir = absdir (dir + rndm (3) + rndm (3) - 2);
798
799 /* If the monster hasn't already chosen a spell, choose one
800 * I'm not sure if it really make sense to pre-select spells (events
801 * could be different by the time the monster goes again).
802 */
803 if (head->spellitem == NULL)
804 {
805 if ((spell_item = monster_choose_random_spell (head)) == NULL)
806 {
807 LOG (llevMonster, "Turned off spells in %s\n", &head->name);
808 CLEAR_FLAG (head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */
809 return 0;
810 }
811 if (spell_item->type == SPELLBOOK)
812 {
813 if (!spell_item->inv)
814 {
815 LOG (llevError, "spellbook %s does not contain a spell?\n", &spell_item->name);
816 return 0;
817 }
818 spell_item = spell_item->inv;
819 }
820 }
821 else
822 spell_item = head->spellitem;
823
824 if (!spell_item)
825 return 0;
826
827 /* Best guess this is a defensive/healing spell */
828 if (spell_item->range <= 1 || spell_item->stats.dam < 0)
829 dir = 0;
830
831 /* Monster doesn't have enough spell-points */
832 if (head->stats.sp < SP_level_spellpoint_cost (head, spell_item, SPELL_MANA))
833 return 0;
834
835 if (head->stats.grace < SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE))
836 return 0;
837
838 head->stats.sp -= SP_level_spellpoint_cost (head, spell_item, SPELL_MANA);
839 head->stats.grace -= SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE);
840
841 /* set this to null, so next time monster will choose something different */
842 head->spellitem = NULL;
843
844 return cast_spell (part, part, dir, spell_item, NULL);
845}
846
847
848int
849monster_use_scroll (object *head, object *part, object *pl, int dir, rv_vector * rv)
850{
851 object *scroll;
852 object *owner;
853 rv_vector rv1;
854
855 /* If you want monsters to cast spells over friends, this spell should
856 * be removed. It probably should be in most cases, since monsters still
857 * don't care about residual effects (ie, casting a cone which may have a
858 * clear path to the player, the side aspects of the code will still hit
859 * other monsters)
860 */
861 if (!(dir = path_to_player (part, pl, 0)))
862 return 0;
863
864 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
865 {
866 get_rangevector (head, owner, &rv1, 0x1);
867 if (dirdiff (dir, rv1.direction) < 2)
868 {
869 return 0; /* Might hit owner with spell */
870 }
871 }
872
873 if (QUERY_FLAG (head, FLAG_CONFUSED))
874 dir = absdir (dir + rndm (3) + rndm (3) - 2);
875
876 for (scroll = head->inv; scroll; scroll = scroll->below)
877 if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv))
878 break;
879
880 /* Used up all his scrolls, so nothing do to */
881 if (!scroll)
882 {
883 CLEAR_FLAG (head, FLAG_READY_SCROLL);
884 return 0;
885 }
886
887 /* Spell should be cast on caster (ie, heal, strength) */
888 if (scroll->inv->range == 0)
889 dir = 0;
890
891 apply_scroll (part, scroll, dir);
892 return 1;
893}
894
895/* monster_use_skill()-implemented 95-04-28 to allow monster skill use.
896 * Note that monsters do not need the skills SK_MELEE_WEAPON and
897 * SK_MISSILE_WEAPON to make those respective attacks, if we
898 * required that we would drastically increase the memory
899 * requirements of CF!!
900 *
901 * The skills we are treating here are all but those. -b.t.
902 *
903 * At the moment this is only useful for throwing, perhaps for
904 * stealing. TODO: This should be more integrated in the game. -MT, 25.11.01
905 */
906int
907monster_use_skill (object *head, object *part, object *pl, int dir)
908{
909 object *skill, *owner;
910
911 if (!(dir = path_to_player (part, pl, 0)))
912 return 0;
913
914 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
915 {
916 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
917
918 if (dirdiff (dir, dir2) < 1)
919 return 0; /* Might hit owner with skill -thrown rocks for example ? */
920 }
921
922 if (QUERY_FLAG (head, FLAG_CONFUSED))
923 dir = absdir (dir + rndm (3) + rndm (3) - 2);
924
925 /* skill selection - monster will use the next unused skill.
926 * well...the following scenario will allow the monster to
927 * toggle between 2 skills. One day it would be nice to make
928 * more skills available to monsters.
929 */
930 for (skill = head->inv; skill; skill = skill->below)
931 if (skill->type == SKILL && skill != head->chosen_skill)
932 {
933 head->chosen_skill = skill;
934 break;
935 }
936
937 if (!skill && !head->chosen_skill)
938 {
939 LOG (llevDebug, "Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n", &head->name, head->count);
940 CLEAR_FLAG (head, FLAG_READY_SKILL);
941 return 0;
942 }
943
944 /* use skill */
945 return do_skill (head, part, head->chosen_skill, dir, NULL);
946}
947
948/* Monster will use a ranged spell attack. */
949int
950monster_use_range (object *head, object *part, object *pl, int dir)
951{
952 object *wand, *owner;
953 int at_least_one = 0;
954
955 if (!(dir = path_to_player (part, pl, 0)))
956 return 0;
957
958 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
959 {
960 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
961
962 if (dirdiff (dir, dir2) < 2)
963 return 0; /* Might hit owner with spell */
964 }
965 if (QUERY_FLAG (head, FLAG_CONFUSED))
966 dir = absdir (dir + rndm (3) + rndm (3) - 2);
967
968 for (wand = head->inv; wand; wand = wand->below)
969 {
970 if (wand->type == WAND)
971 {
972 /* Found a wand, let's see if it has charges left */
973 at_least_one = 1;
974 if (wand->stats.food <= 0)
975 continue;
976
977 cast_spell (head, wand, dir, wand->inv, NULL);
978
979 if (!(--wand->stats.food))
980 {
981 if (wand->arch)
982 {
983 CLEAR_FLAG (wand, FLAG_ANIMATE);
984 wand->face = wand->arch->clone.face;
985 wand->set_speed (0);
986 }
987 }
988 /* Success */
989 return 1;
990 }
991 else if (wand->type == ROD || wand->type == HORN)
992 {
993 /* Found rod/horn, let's use it if possible */
994 at_least_one = 1;
995 if (wand->stats.hp < MAX (wand->inv->stats.sp, wand->inv->stats.grace))
996 continue;
997
998 /* drain charge before casting spell - can be a case where the
999 * spell destroys the monster, and rod, so if done after, results
1000 * in crash.
1001 */
1002 drain_rod_charge (wand);
1003 cast_spell (head, wand, dir, wand->inv, NULL);
1004
1005 /* Success */
1006 return 1;
1007 }
1008 }
1009
1010 if (at_least_one)
1011 return 0;
1012
1013 LOG (llevError, "Error: Monster %s (%d) HAS_READY_RANG() without wand/horn/rod.\n", &head->name, head->count);
1014 CLEAR_FLAG (head, FLAG_READY_RANGE);
1015 return 0;
1016}
1017
1018int
1019monster_use_bow (object *head, object *part, object *pl, int dir)
1020{
1021 object *owner;
1022
1023 if (!(dir = path_to_player (part, pl, 0)))
1024 return 0;
1025 if (QUERY_FLAG (head, FLAG_CONFUSED))
1026 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1027
1028 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1029 {
1030 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
1031
1032 if (dirdiff (dir, dir2) < 1)
1033 return 0; /* Might hit owner with arrow */
1034 }
1035
1036 /* in server/player.c */
1037 return fire_bow (head, part, NULL, dir, 0, part->x, part->y);
1038
1039}
1040
1041/* Checks if putting on 'item' will make 'who' do more 480/* Checks if putting on 'item' will make 'who' do more
1042 * damage. This is a very simplistic check - also checking things 481 * damage. This is a very simplistic check - also checking things
1043 * like speed and ac are also relevant. 482 * like speed and ac are also relevant.
1044 * 483 *
1045 * return true if item is a better object. 484 * return true if item is a better object.
1046 */ 485 */
1047 486static int
1048int
1049check_good_weapon (object *who, object *item) 487check_good_weapon (object *who, object *item)
1050{ 488{
1051 object *other_weap; 489 object *other_weap;
1052 int val = 0, i; 490 int val = 0, i;
1053 491
1054 for (other_weap = who->inv; other_weap != NULL; other_weap = other_weap->below) 492 for (other_weap = who->inv; other_weap; other_weap = other_weap->below)
1055 if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED)) 493 if (other_weap->type == item->type && QUERY_FLAG (other_weap, FLAG_APPLIED))
1056 break; 494 break;
1057 495
1058 if (other_weap == NULL) /* No other weapons */ 496 if (!other_weap) /* No other weapons */
1059 return 1; 497 return 1;
1060 498
1061 /* Rather than go through and apply the new one, and see if it is 499 /* Rather than go through and apply the new one, and see if it is
1062 * better, just do some simple checks 500 * better, just do some simple checks
1063 * Put some multipliers for things that hvae several effects, 501 * Put some multipliers for things that hvae several effects,
… …
1068 val += (item->magic - other_weap->magic) * 3; 506 val += (item->magic - other_weap->magic) * 3;
1069 /* Monsters don't really get benefits from things like regen rates 507 /* Monsters don't really get benefits from things like regen rates
1070 * from items. But the bonus for their stats are very important. 508 * from items. But the bonus for their stats are very important.
1071 */ 509 */
1072 for (i = 0; i < NUM_STATS; i++) 510 for (i = 0; i < NUM_STATS; i++)
1073 val += (get_attr_value (&item->stats, i) - get_attr_value (&other_weap->stats, i)) * 2; 511 val += item->stats.stat (i) - other_weap->stats.stat (i) * 2;
1074 512
1075 if (val > 0) 513 if (val > 0)
1076 return 1; 514 return 1;
1077 else 515 else
1078 return 0; 516 return 0;
1079} 517}
1080 518
1081int 519static int
1082check_good_armour (object *who, object *item) 520check_good_armour (object *who, object *item)
1083{ 521{
1084 object *other_armour; 522 object *other_armour;
1085 int val = 0, i; 523 int val = 0, i;
1086 524
1087 for (other_armour = who->inv; other_armour != NULL; other_armour = other_armour->below) 525 for (other_armour = who->inv; other_armour; other_armour = other_armour->below)
1088 if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED)) 526 if (other_armour->type == item->type && QUERY_FLAG (other_armour, FLAG_APPLIED))
1089 break; 527 break;
1090 528
1091 if (other_armour == NULL) /* No other armour, use the new */ 529 if (other_armour == NULL) /* No other armour, use the new */
1092 return 1; 530 return 1;
… …
1114 552
1115 if (val > 0) 553 if (val > 0)
1116 return 1; 554 return 1;
1117 else 555 else
1118 return 0; 556 return 0;
1119}
1120
1121/*
1122 * monster_check_pickup(): checks for items that monster can pick up.
1123 *
1124 * Vick's (vick@bern.docs.uu.se) fix 921030 for the sweeper blob.
1125 * Each time the blob passes over some treasure, it will
1126 * grab it a.s.a.p.
1127 *
1128 * Eneq(@csd.uu.se): This can now be defined in the archetypes, added code
1129 * to handle this.
1130 *
1131 * This function was seen be continueing looping at one point (tmp->below
1132 * became a recursive loop. It may be better to call monster_check_apply
1133 * after we pick everything up, since that function may call others which
1134 * affect stacking on this space.
1135 */
1136void
1137monster_check_pickup (object *monster)
1138{
1139 object *tmp, *next;
1140
1141 for (tmp = monster->below; tmp != NULL; tmp = next)
1142 {
1143 next = tmp->below;
1144 if (monster_can_pick (monster, tmp))
1145 {
1146 tmp->remove ();
1147 tmp = insert_ob_in_ob (tmp, monster);
1148 (void) monster_check_apply (monster, tmp);
1149 }
1150 /* We could try to re-establish the cycling, of the space, but probably
1151 * not a big deal to just bail out.
1152 */
1153 if (next && next->destroyed ())
1154 return;
1155 }
1156}
1157
1158/*
1159 * monster_can_pick(): If the monster is interested in picking up
1160 * the item, then return 0. Otherwise 0.
1161 * Instead of pick_up, flags for "greed", etc, should be used.
1162 * I've already utilized flags for bows, wands, rings, etc, etc. -Frank.
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
1232 /* Simplistic check - if the monster has a location to equip it, he will
1233 * pick it up. Note that this doesn't handle cases where an item may
1234 * use several locations.
1235 */
1236 for (i = 0; i < NUM_BODY_LOCATIONS; i++)
1237 {
1238 if (monster->body_info[i] && item->body_info[i])
1239 {
1240 flag = 1;
1241 break;
1242 }
1243 }
1244
1245 if (((!(monster->pick_up & 32)) && flag) || ((monster->pick_up & 32) && (!flag)))
1246 return 1;
1247 return 0;
1248}
1249
1250/*
1251 * monster_apply_below():
1252 * Vick's (vick@bern.docs.uu.se) @921107 -> If a monster who's
1253 * eager to apply things, encounters something apply-able,
1254 * then make him apply it
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} 557}
1282 558
1283/* 559/*
1284 * monster_check_apply() is meant to be called after an item is 560 * monster_check_apply() is meant to be called after an item is
1285 * inserted in a monster. 561 * inserted in a monster.
… …
1293void 569void
1294monster_check_apply (object *mon, object *item) 570monster_check_apply (object *mon, object *item)
1295{ 571{
1296 int flag = 0; 572 int flag = 0;
1297 573
1298 if (item->type == SPELLBOOK && mon->arch && (QUERY_FLAG ((&mon->arch->clone), FLAG_CAST_SPELL))) 574 if (item->type == SPELLBOOK && mon->arch && (QUERY_FLAG (mon->arch, FLAG_CAST_SPELL)))
1299 { 575 {
1300 SET_FLAG (mon, FLAG_CAST_SPELL); 576 SET_FLAG (mon, FLAG_CAST_SPELL);
1301 return; 577 return;
1302 } 578 }
1303 579
… …
1396 * monsters have some advantages after all. 672 * monsters have some advantages after all.
1397 */ 673 */
1398 manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE); 674 manual_apply (mon, item, AP_APPLY | AP_IGNORE_CURSE);
1399} 675}
1400 676
1401void 677static int
1402npc_call_help (object *op) 678can_hit (object *ob1, object *ob2, rv_vector * rv)
1403{ 679{
1404 int x, y, mflags;
1405 object *npc; 680 object *more;
1406 sint16 sx, sy; 681 rv_vector rv1;
1407 maptile *m;
1408 682
1409 for (x = -3; x < 4; x++) 683 if (QUERY_FLAG (ob1, FLAG_CONFUSED) && !(rndm (3)))
1410 for (y = -3; y < 4; y++) 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)
1411 { 693 {
1412 m = op->map; 694 get_rangevector (ob1, more, &rv1, 0);
1413 sx = op->x + x; 695 if (abs (rv1.distance_x) < 2 && abs (rv1.distance_y) < 2)
1414 sy = op->y + y; 696 return 1;
1415 mflags = get_map_flags (m, &m, sx, sy, &sx, &sy);
1416 /* If nothing alive on this space, no need to search the space. */
1417 if ((mflags & P_OUT_OF_MAP) || !(mflags & P_IS_ALIVE))
1418 continue;
1419
1420 for (npc = GET_MAP_OB (m, sx, sy); npc != NULL; npc = npc->above)
1421 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1422 npc->enemy = op->enemy;
1423 } 697 }
1424}
1425 698
1426int 699 return 0;
700}
701
702static int
1427dist_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv) 703dist_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
1428{ 704{
1429 if (can_hit (part, enemy, rv)) 705 if (can_hit (part, enemy, rv))
1430 return dir; 706 return dir;
707
1431 if (rv->distance < 10) 708 if (rv->distance < 10)
1432 return absdir (dir + 4); 709 return absdir (dir + 4);
1433 else if (rv->distance > 18) 710 else if (rv->distance > 18)
1434 return dir; 711 return dir;
1435 712
1436 return 0; 713 return 0;
1437} 714}
1438 715
1439int 716static int
1440run_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv) 717run_att (int dir, object *ob, object *enemy, object *part, rv_vector *rv)
1441{ 718{
1442 if ((can_hit (part, enemy, rv) && ob->move_status < 20) || ob->move_status < 20) 719 if (can_hit (part, enemy, rv))
1443 {
1444 ob->move_status++;
1445 return (dir); 720 return dir;
1446 } 721 else
1447 else if (ob->move_status > 20)
1448 ob->move_status = 0;
1449
1450 return absdir (dir + 4); 722 return absdir (dir + 4);
1451} 723}
1452 724
1453int 725static int
1454hitrun_att (int dir, object *ob, object *enemy) 726hitrun_att (int dir, object *ob, object *enemy)
1455{ 727{
1456 if (ob->move_status++ < 25) 728 if (ob->move_status++ < 25)
1457 return dir; 729 return dir;
1458 else if (ob->move_status < 50) 730 else if (ob->move_status < 50)
… …
1461 ob->move_status = 0; 733 ob->move_status = 0;
1462 734
1463 return absdir (dir + 4); 735 return absdir (dir + 4);
1464} 736}
1465 737
1466int 738static int
1467wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv) 739wait_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1468{ 740{
1469
1470 int inrange = can_hit (part, enemy, rv); 741 int inrange = can_hit (part, enemy, rv);
1471 742
1472 if (ob->move_status || inrange) 743 if (ob->move_status || inrange)
1473 ob->move_status++; 744 ob->move_status++;
1474 745
… …
1481 752
1482 ob->move_status = 0; 753 ob->move_status = 0;
1483 return 0; 754 return 0;
1484} 755}
1485 756
1486int 757static int
1487disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv) 758disthit_att (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1488{ 759{
1489
1490 /* The logic below here looked plain wrong before. Basically, what should 760 /* The logic below here looked plain wrong before. Basically, what should
1491 * happen is that if the creatures hp percentage falls below run_away, 761 * happen is that if the creatures hp percentage falls below run_away,
1492 * the creature should run away (dir+4) 762 * the creature should run away (dir+4)
1493 * I think its wrong for a creature to have a zero maxhp value, but 763 * I think its wrong for a creature to have a zero maxhp value, but
1494 * at least one map has this set, and whatever the map contains, the 764 * at least one map has this set, and whatever the map contains, the
1495 * server should try to be resilant enough to avoid the problem 765 * server should try to be resilant enough to avoid the problem
1496 */ 766 */
1497 if (ob->stats.maxhp && (ob->stats.hp * 100) / ob->stats.maxhp < ob->run_away) 767 if (ob->stats.hp * 100 < ob->stats.maxhp * ob->run_away)
1498 return absdir (dir + 4); 768 return absdir (dir + 4);
1499 769
1500 return dist_att (dir, ob, enemy, part, rv); 770 return dist_att (dir, ob, enemy, part, rv);
1501} 771}
1502 772
1503int 773static int
1504wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv) 774wait_att2 (int dir, object *ob, object *enemy, object *part, rv_vector * rv)
1505{ 775{
1506 if (rv->distance < 9) 776 if (rv->distance < 9)
1507 return absdir (dir + 4); 777 return absdir (dir + 4);
1508 778
1509 return 0; 779 return 0;
1510} 780}
1511 781
1512void 782static void
1513circ1_move (object *ob) 783circ1_move (object *ob)
1514{ 784{
1515 static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 }; 785 static int circle[12] = { 3, 3, 4, 5, 5, 6, 7, 7, 8, 1, 1, 2 };
1516 786
1517 if (++ob->move_status > 11) 787 if (++ob->move_status > 11)
… …
1519 789
1520 if (!(move_object (ob, circle[ob->move_status]))) 790 if (!(move_object (ob, circle[ob->move_status])))
1521 move_object (ob, rndm (8) + 1); 791 move_object (ob, rndm (8) + 1);
1522} 792}
1523 793
1524void 794static void
1525circ2_move (object *ob) 795circ2_move (object *ob)
1526{ 796{
1527 static int circle[20] = { 3, 3, 3, 4, 4, 5, 5, 5, 6, 6, 7, 7, 7, 8, 8, 1, 1, 1, 2, 2 }; 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 };
1528 798
1529 if (++ob->move_status > 19) 799 if (++ob->move_status > 19)
… …
1531 801
1532 if (!(move_object (ob, circle[ob->move_status]))) 802 if (!(move_object (ob, circle[ob->move_status])))
1533 move_object (ob, rndm (8) + 1); 803 move_object (ob, rndm (8) + 1);
1534} 804}
1535 805
1536void 806static void
1537pace_movev (object *ob) 807pace_movev (object *ob)
1538{ 808{
1539 if (ob->move_status++ > 6) 809 if (ob->move_status++ > 6)
1540 ob->move_status = 0; 810 ob->move_status = 0;
1541 811
… …
1543 move_object (ob, 5); 813 move_object (ob, 5);
1544 else 814 else
1545 move_object (ob, 1); 815 move_object (ob, 1);
1546} 816}
1547 817
1548void 818static void
1549pace_moveh (object *ob) 819pace_moveh (object *ob)
1550{ 820{
1551 if (ob->move_status++ > 6) 821 if (ob->move_status++ > 6)
1552 ob->move_status = 0; 822 ob->move_status = 0;
1553 823
… …
1555 move_object (ob, 3); 825 move_object (ob, 3);
1556 else 826 else
1557 move_object (ob, 7); 827 move_object (ob, 7);
1558} 828}
1559 829
1560void 830static void
1561pace2_movev (object *ob) 831pace2_movev (object *ob)
1562{ 832{
1563 if (ob->move_status++ > 16) 833 if (ob->move_status++ > 16)
1564 ob->move_status = 0; 834 ob->move_status = 0;
1565 835
… …
1571 move_object (ob, 1); 841 move_object (ob, 1);
1572 else 842 else
1573 return; 843 return;
1574} 844}
1575 845
1576void 846static void
1577pace2_moveh (object *ob) 847pace2_moveh (object *ob)
1578{ 848{
1579 if (ob->move_status++ > 16) 849 if (ob->move_status++ > 16)
1580 ob->move_status = 0; 850 ob->move_status = 0;
1581 851
… …
1587 move_object (ob, 7); 857 move_object (ob, 7);
1588 else 858 else
1589 return; 859 return;
1590} 860}
1591 861
1592void 862static void
1593rand_move (object *ob) 863rand_move (object *ob)
1594{ 864{
1595 int i;
1596
1597 if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(rndm (9))))) 865 if (ob->move_status < 1 || ob->move_status > 8 || !(move_object (ob, ob->move_status || !(rndm (9)))))
1598 for (i = 0; i < 5; i++) 866 for (int i = 0; i < 5; i++)
1599 if (move_object (ob, ob->move_status = rndm (8) + 1)) 867 if (move_object (ob, ob->move_status = rndm (8) + 1))
1600 return; 868 return;
1601} 869}
1602 870
871#define MAX_KNOWN_SPELLS 20
872
873/* Returns a randomly selected spell. This logic is still
874 * less than ideal. This code also only seems to deal with
875 * wizard spells, as the check is against sp, and not grace.
876 * can mosnters know cleric spells?
877 */
878static object *
879monster_choose_random_spell (object *monster)
880{
881 object *altern[MAX_KNOWN_SPELLS];
882 int i = 0;
883
884 for (object *tmp = monster->inv; tmp; tmp = tmp->below)
885 if (tmp->type == SPELLBOOK || tmp->type == SPELL)
886 {
887 /* Check and see if it's actually a useful spell.
888 * If its a spellbook, the spell is actually the inventory item.
889 * if it is a spell, then it is just the object itself.
890 */
891 if (monster_should_cast_spell (monster, (tmp->type == SPELLBOOK) ? tmp->inv : tmp))
892 {
893 altern [i++] = tmp;
894
895 if (i == MAX_KNOWN_SPELLS)
896 break;
897 }
898 }
899
900 return i ? altern [rndm (i)] : 0;
901}
902
903/* This checks to see if the monster should cast a spell/ability.
904 * it returns true if the monster casts a spell, 0 if he doesn't.
905 * head is the head of the monster.
906 * part is the part of the monster we are checking against.
907 * pl is the target.
908 * dir is the direction to case.
909 * rv is the vector which describes where the enemy is.
910 */
911static int
912monster_cast_spell (object *head, object *part, object *pl, int dir, rv_vector * rv)
913{
914 object *spell_item;
915 object *owner;
916 rv_vector rv1;
917
918 /* If you want monsters to cast spells over friends, this spell should
919 * be removed. It probably should be in most cases, since monsters still
920 * don't care about residual effects (ie, casting a cone which may have a
921 * clear path to the player, the side aspects of the code will still hit
922 * other monsters)
923 */
924 if (!(dir = path_to_player (part, pl, 0)))
925 return 0;
926
927 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
928 {
929 get_rangevector (head, owner, &rv1, 0x1);
930 if (dirdiff (dir, rv1.direction) < 2)
931 return 0; /* Might hit owner with spell */
932 }
933
934 if (QUERY_FLAG (head, FLAG_CONFUSED))
935 dir = absdir (dir + rndm (3) + rndm (3) - 2);
936
937 /* If the monster hasn't already chosen a spell, choose one
938 * I'm not sure if it really make sense to pre-select spells (events
939 * could be different by the time the monster goes again).
940 */
941 if (head->spellitem == NULL)
942 {
943 if ((spell_item = monster_choose_random_spell (head)) == NULL)
944 {
945 LOG (llevMonster, "Turned off spells in %s\n", &head->name);
946 CLEAR_FLAG (head, FLAG_CAST_SPELL); /* Will be turned on when picking up book */
947 return 0;
948 }
949
950 if (spell_item->type == SPELLBOOK)
951 {
952 if (!spell_item->inv)
953 {
954 LOG (llevError, "spellbook %s does not contain a spell?\n", &spell_item->name);
955 return 0;
956 }
957
958 spell_item = spell_item->inv;
959 }
960 }
961 else
962 spell_item = head->spellitem;
963
964 if (!spell_item)
965 return 0;
966
967 /* Best guess this is a defensive/healing spell */
968 if (spell_item->range <= 1 || spell_item->stats.dam < 0)
969 dir = 0;
970
971 /* Monster doesn't have enough spell-points */
972 if (head->stats.sp < SP_level_spellpoint_cost (head, spell_item, SPELL_MANA))
973 return 0;
974
975 if (head->stats.grace < SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE))
976 return 0;
977
978 head->stats.sp -= SP_level_spellpoint_cost (head, spell_item, SPELL_MANA);
979 head->stats.grace -= SP_level_spellpoint_cost (head, spell_item, SPELL_GRACE);
980
981 /* set this to null, so next time monster will choose something different */
982 head->spellitem = NULL;
983
984 return cast_spell (part, part, dir, spell_item, NULL);
985}
986
987static int
988monster_use_scroll (object *head, object *part, object *pl, int dir, rv_vector * rv)
989{
990 object *scroll;
991 object *owner;
992 rv_vector rv1;
993
994 /* If you want monsters to cast spells over friends, this spell should
995 * be removed. It probably should be in most cases, since monsters still
996 * don't care about residual effects (ie, casting a cone which may have a
997 * clear path to the player, the side aspects of the code will still hit
998 * other monsters)
999 */
1000 if (!(dir = path_to_player (part, pl, 0)))
1001 return 0;
1002
1003 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1004 {
1005 get_rangevector (head, owner, &rv1, 0x1);
1006 if (dirdiff (dir, rv1.direction) < 2)
1007 {
1008 return 0; /* Might hit owner with spell */
1009 }
1010 }
1011
1012 if (QUERY_FLAG (head, FLAG_CONFUSED))
1013 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1014
1015 for (scroll = head->inv; scroll; scroll = scroll->below)
1016 if (scroll->type == SCROLL && monster_should_cast_spell (head, scroll->inv))
1017 break;
1018
1019 /* Used up all his scrolls, so nothing do to */
1020 if (!scroll)
1021 {
1022 CLEAR_FLAG (head, FLAG_READY_SCROLL);
1023 return 0;
1024 }
1025
1026 /* Spell should be cast on caster (ie, heal, strength) */
1027 if (scroll->inv->range == 0)
1028 dir = 0;
1029
1030 apply_scroll (part, scroll, dir);
1031 return 1;
1032}
1033
1034/* monster_use_skill()-implemented 95-04-28 to allow monster skill use.
1035 * Note that monsters do not need the skills SK_MELEE_WEAPON and
1036 * SK_MISSILE_WEAPON to make those respective attacks, if we
1037 * required that we would drastically increase the memory
1038 * requirements of CF!!
1039 *
1040 * The skills we are treating here are all but those. -b.t.
1041 *
1042 * At the moment this is only useful for throwing, perhaps for
1043 * stealing. TODO: This should be more integrated in the game. -MT, 25.11.01
1044 */
1045static int
1046monster_use_skill (object *head, object *part, object *pl, int dir)
1047{
1048 object *skill, *owner;
1049
1050 if (!(dir = path_to_player (part, pl, 0)))
1051 return 0;
1052
1053 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1054 {
1055 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
1056
1057 if (dirdiff (dir, dir2) < 1)
1058 return 0; /* Might hit owner with skill -thrown rocks for example ? */
1059 }
1060
1061 if (QUERY_FLAG (head, FLAG_CONFUSED))
1062 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1063
1064 /* skill selection - monster will use the next unused skill.
1065 * well...the following scenario will allow the monster to
1066 * toggle between 2 skills. One day it would be nice to make
1067 * more skills available to monsters.
1068 */
1069 for (skill = head->inv; skill; skill = skill->below)
1070 if (skill->type == SKILL && skill != head->chosen_skill)
1071 {
1072 head->chosen_skill = skill;
1073 break;
1074 }
1075
1076 if (!skill && !head->chosen_skill)
1077 {
1078 LOG (llevDebug, "Error: Monster %s (%d) has FLAG_READY_SKILL without skill.\n", &head->name, head->count);
1079 CLEAR_FLAG (head, FLAG_READY_SKILL);
1080 return 0;
1081 }
1082
1083 /* use skill */
1084 return do_skill (head, part, head->chosen_skill, dir, NULL);
1085}
1086
1087/* Monster will use a ranged spell attack. */
1088static int
1089monster_use_range (object *head, object *part, object *pl, int dir)
1090{
1091 object *wand, *owner;
1092 int at_least_one = 0;
1093
1094 if (!(dir = path_to_player (part, pl, 0)))
1095 return 0;
1096
1097 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1098 {
1099 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
1100
1101 if (dirdiff (dir, dir2) < 2)
1102 return 0; /* Might hit owner with spell */
1103 }
1104
1105 if (QUERY_FLAG (head, FLAG_CONFUSED))
1106 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1107
1108 for (wand = head->inv; wand; wand = wand->below)
1109 {
1110 if (wand->type == WAND)
1111 {
1112 /* Found a wand, let's see if it has charges left */
1113 at_least_one = 1;
1114 if (wand->stats.food <= 0)
1115 continue;
1116
1117 cast_spell (head, wand, dir, wand->inv, NULL);
1118
1119 if (!(--wand->stats.food))
1120 {
1121 if (wand->arch)
1122 {
1123 CLEAR_FLAG (wand, FLAG_ANIMATE);
1124 wand->face = wand->arch->face;
1125 wand->set_speed (0);
1126 }
1127 }
1128 /* Success */
1129 return 1;
1130 }
1131 else if (wand->type == ROD || wand->type == HORN)
1132 {
1133 /* Found rod/horn, let's use it if possible */
1134 at_least_one = 1;
1135 if (wand->stats.hp < max (wand->inv->stats.sp, wand->inv->stats.grace))
1136 continue;
1137
1138 /* drain charge before casting spell - can be a case where the
1139 * spell destroys the monster, and rod, so if done after, results
1140 * in crash.
1141 */
1142 drain_rod_charge (wand);
1143 cast_spell (head, wand, dir, wand->inv, NULL);
1144
1145 /* Success */
1146 return 1;
1147 }
1148 }
1149
1150 if (at_least_one)
1151 return 0;
1152
1153 LOG (llevError, "Error: Monster %s (%d) HAS_READY_RANGE() without wand/horn/rod.\n", &head->name, head->count);
1154 CLEAR_FLAG (head, FLAG_READY_RANGE);
1155 return 0;
1156}
1157
1158static int
1159monster_use_bow (object *head, object *part, object *pl, int dir)
1160{
1161 object *owner;
1162
1163 if (!(dir = path_to_player (part, pl, 0)))
1164 return 0;
1165
1166 if (QUERY_FLAG (head, FLAG_CONFUSED))
1167 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1168
1169 if (QUERY_FLAG (head, FLAG_FRIENDLY) && (owner = head->owner) != NULL)
1170 {
1171 int dir2 = find_dir_2 (head->x - owner->x, head->y - owner->y);
1172
1173 if (dirdiff (dir, dir2) < 1)
1174 return 0; /* Might hit owner with arrow */
1175 }
1176
1177 /* in server/player.c */
1178 return fire_bow (head, part, NULL, dir, 0, part->x, part->y);
1179
1180}
1181
1182void
1183npc_call_help (object *op)
1184{
1185 unordered_mapwalk (op, -7, -7, 7, 7)
1186 {
1187 mapspace &ms = m->at (nx, ny);
1188
1189 /* If nothing alive on this space, no need to search the space. */
1190 if (!(ms.flags () & P_IS_ALIVE))
1191 continue;
1192
1193 for (object *npc = ms.bot; npc; npc = npc->above)
1194 if (QUERY_FLAG (npc, FLAG_ALIVE) && QUERY_FLAG (npc, FLAG_UNAGGRESSIVE))
1195 npc->enemy = op->enemy;
1196 }
1197}
1198
1603void 1199void
1604check_earthwalls (object *op, maptile *m, int x, int y) 1200check_earthwalls (object *op, maptile *m, int x, int y)
1605{ 1201{
1606 object *tmp;
1607
1608 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)
1609 {
1610 if (tmp->type == EARTHWALL) 1203 if (tmp->type == EARTHWALL)
1611 { 1204 {
1612 hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1); 1205 hit_player (tmp, op->stats.dam, op, AT_PHYSICAL, 1);
1613 return; 1206 return;
1614 } 1207 }
1615 }
1616} 1208}
1617 1209
1618void 1210void
1619check_doors (object *op, maptile *m, int x, int y) 1211check_doors (object *op, maptile *m, int x, int y)
1620{ 1212{
1621 object *tmp;
1622
1623 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)
1624 {
1625 if (tmp->type == DOOR) 1214 if (tmp->type == DOOR)
1626 { 1215 {
1627 hit_player (tmp, 1000, op, AT_PHYSICAL, 1); 1216 hit_player (tmp, 1000, op, AT_PHYSICAL, 1);
1628 return; 1217 return;
1629 } 1218 }
1630 }
1631} 1219}
1632 1220
1633/* find_mon_throw_ob() - modeled on find_throw_ob 1221/* find_mon_throw_ob() - modeled on find_throw_ob
1634 * This is probably overly simplistic as it is now - We want 1222 * This is probably overly simplistic as it is now - We want
1635 * monsters to throw things like chairs and other pieces of 1223 * monsters to throw things like chairs and other pieces of
… …
1666#endif 1254#endif
1667 1255
1668 return tmp; 1256 return tmp;
1669} 1257}
1670 1258
1259/*
1260 * Move-monster returns 1 if the object has been freed, otherwise 0.
1261 */
1262int
1263move_monster (object *op)
1264{
1265 int dir, diff, pre_att_dir; /* elmex: pre_att_dir remembers the direction before attack movement */
1266 object *owner, *enemy, *part, *oph = op;
1267 rv_vector rv;
1268
1269 /* Monsters not on maps don't do anything. These monsters are things
1270 * Like royal guards in city dwellers inventories.
1271 */
1272 if (!op->map)
1273 return 0;
1274
1275 /* for target facing, we copy this value here for fast access */
1276 if (oph->head) /* force update the head - one arch one pic */
1277 oph = oph->head;
1278
1279 if (QUERY_FLAG (op, FLAG_NO_ATTACK)) /* we never ever attack */
1280 enemy = op->enemy = NULL;
1281 else if ((enemy = find_enemy (op, &rv)))
1282 /* we have an enemy, just tell him we want him dead */
1283 enemy->attacked_by = op; /* our ptr */
1284
1285 /* generate hp, if applicable */
1286 if (op->stats.Con > 0 && op->stats.hp < op->stats.maxhp)
1287 {
1288 /* last heal is in funny units. Dividing by speed puts
1289 * the regeneration rate on a basis of time instead of
1290 * #moves the monster makes. The scaling by 8 is
1291 * to capture 8th's of a hp fraction regens
1292 *
1293 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
1294 * overflow might produce monsters with negative hp.
1295 */
1296
1297 op->last_heal += (int) ((float) (8 * op->stats.Con) / op->speed);
1298 op->stats.hp = min ((sint32) op->stats.hp + op->last_heal / 32, op->stats.maxhp); /* causes Con/4 hp/tick */
1299 op->last_heal %= 32;
1300
1301 /* So if the monster has gained enough HP that they are no longer afraid */
1302 if (QUERY_FLAG (op, FLAG_RUN_AWAY) && op->stats.hp >= (signed short)(((float)op->run_away / 100.f) * (float)op->stats.maxhp))
1303 CLEAR_FLAG (op, FLAG_RUN_AWAY);
1304
1305 if (op->stats.hp > op->stats.maxhp)
1306 op->stats.hp = op->stats.maxhp;
1307 }
1308
1309 /* generate sp, if applicable */
1310 if (op->stats.Pow > 0 && op->stats.sp < op->stats.maxsp)
1311 {
1312 /* last_sp is in funny units. Dividing by speed puts
1313 * the regeneration rate on a basis of time instead of
1314 * #moves the monster makes. The scaling by 8 is
1315 * to capture 8th's of a sp fraction regens
1316 *
1317 * Cast to sint32 before comparing to maxhp since otherwise an (sint16)
1318 * overflow might produce monsters with negative sp.
1319 */
1320
1321 op->last_sp += (int) ((float) (8 * op->stats.Pow) / op->speed);
1322 op->stats.sp = min (op->stats.sp + op->last_sp / 128, op->stats.maxsp); /* causes Pow/16 sp/tick */
1323 op->last_sp %= 128;
1324 }
1325
1326 /* this should probably get modified by many more values.
1327 * (eg, creatures resistance to fear, level, etc. )
1328 */
1329 if (QUERY_FLAG (op, FLAG_SCARED) && !(rndm (20)))
1330 CLEAR_FLAG (op, FLAG_SCARED); /* Time to regain some "guts"... */
1331
1332 if (INVOKE_OBJECT (MONSTER_MOVE, op, ARG_OBJECT (op->enemy)))
1333 return QUERY_FLAG (op, FLAG_FREED);
1334
1335 if (QUERY_FLAG (op, FLAG_SLEEP) || QUERY_FLAG (op, FLAG_BLIND) ||
1336 ((op->map->darklevel () > 0) && !QUERY_FLAG (op, FLAG_SEE_IN_DARK) && !QUERY_FLAG (op, FLAG_SEE_INVISIBLE)))
1337 if (!check_wakeup (op, enemy, &rv))
1338 return 0;
1339
1340 /* check if monster pops out of hidden spot */
1341 if (op->flag [FLAG_HIDDEN])
1342 do_hidden_move (op);
1343
1344 if (op->pick_up)
1345 monster_check_pickup (op);
1346
1347 if (op->will_apply)
1348 monster_apply_below (op); /* Check for items to apply below */
1349
1350 /* If we don't have an enemy, do special movement or the like */
1351 if (!enemy)
1352 {
1353 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
1354 {
1355 op->drop_and_destroy ();
1356 return 1;
1357 }
1358
1359 /* Probably really a bug for a creature to have both
1360 * stand still and a movement type set.
1361 */
1362 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
1363 {
1364 if (op->attack_movement & HI4)
1365 {
1366 switch (op->attack_movement & HI4)
1367 {
1368 case PETMOVE:
1369 pet_move (op);
1370 break;
1371
1372 case CIRCLE1:
1373 circ1_move (op);
1374 break;
1375
1376 case CIRCLE2:
1377 circ2_move (op);
1378 break;
1379
1380 case PACEV:
1381 pace_movev (op);
1382 break;
1383
1384 case PACEH:
1385 pace_moveh (op);
1386 break;
1387
1388 case PACEV2:
1389 pace2_movev (op);
1390 break;
1391
1392 case PACEH2:
1393 pace2_moveh (op);
1394 break;
1395
1396 case RANDO:
1397 rand_move (op);
1398 break;
1399
1400 case RANDO2:
1401 move_randomly (op);
1402 break;
1403 }
1404
1405 return 0;
1406 }
1407 else if (QUERY_FLAG (op, FLAG_RANDOM_MOVE))
1408 move_randomly (op);
1409 } /* stand still */
1410
1411 return 0;
1412 } /* no enemy */
1413
1414 /* We have an enemy. Block immediately below is for pets */
1415 if ((op->attack_movement & HI4) == PETMOVE
1416 && (owner = op->owner) != NULL
1417 && !on_same_map (op, owner)
1418 && !owner->flag [FLAG_REMOVED])
1419 return follow_owner (op, owner);
1420
1421 /* doppleganger code to change monster facing to that of the nearest
1422 * player. Hmm. The code is here, but no monster in the current
1423 * arch set uses it.
1424 */
1425 if (op->race == shstr_doppleganger)
1426 {
1427 op->face = enemy->face;
1428 op->name = enemy->name;
1429 }
1430
1431 /* Calculate range information for closest body part - this
1432 * is used for the 'skill' code, which isn't that smart when
1433 * it comes to figuring it out - otherwise, giants throw boulders
1434 * into themselves.
1435 */
1436 get_rangevector (op, enemy, &rv, 0);
1437
1438 /* Move the check for scared up here - if the monster was scared,
1439 * we were not doing any of the logic below, so might as well save
1440 * a few cpu cycles.
1441 */
1442 if (!QUERY_FLAG (op, FLAG_SCARED))
1443 {
1444 rv_vector rv1;
1445
1446 /* now we test every part of an object .... this is a real ugly piece of code */
1447 for (part = op; part; part = part->more)
1448 {
1449 get_rangevector (part, enemy, &rv1, 0x1);
1450 dir = rv1.direction;
1451
1452 /* hm, not sure about this part - in original was a scared flag here too
1453 * but that we test above... so can be old code here
1454 */
1455 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
1456 dir = absdir (dir + 4);
1457
1458 if (QUERY_FLAG (op, FLAG_CONFUSED))
1459 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1460
1461 if (QUERY_FLAG (op, FLAG_CAST_SPELL) && !(rndm (3)))
1462 if (monster_cast_spell (op, part, enemy, dir, &rv1))
1463 return 0;
1464
1465 if (QUERY_FLAG (op, FLAG_READY_SCROLL) && !(rndm (3)))
1466 if (monster_use_scroll (op, part, enemy, dir, &rv1))
1467 return 0;
1468
1469 if (QUERY_FLAG (op, FLAG_READY_RANGE) && !(rndm (3)))
1470 if (monster_use_range (op, part, enemy, dir))
1471 return 0;
1472
1473 if (QUERY_FLAG (op, FLAG_READY_SKILL) && !(rndm (3)))
1474 if (monster_use_skill (op, rv.part, enemy, rv.direction))
1475 return 0;
1476
1477 if (QUERY_FLAG (op, FLAG_READY_BOW) && !(rndm (2)))
1478 if (monster_use_bow (op, part, enemy, dir))
1479 return 0;
1480 } /* for processing of all parts */
1481 } /* If not scared */
1482
1483 part = rv.part;
1484 dir = rv.direction;
1485
1486//-GPL
1487
1488 // if the enemy is a player, we have los. if los says we
1489 // can directly reach the player, we do not deviate.
1490 // for non-players, we never deviate
1491 if (op->stats.Wis >= 8
1492 && enemy->contr && enemy->contr->darkness_at (op->map, op->x, op->y) == LOS_BLOCKED)
1493 {
1494 int sdir = 0;
1495 uint32_t &smell = op->ms ().smell;
1496
1497 for (int ndir = 1; ndir <= 8; ++ndir)
1498 {
1499 mapxy pos (op); pos.move (ndir);
1500
1501 if (pos.normalise ())
1502 {
1503 mapspace &ms = pos.ms ();
1504
1505 if (ms.smell > smell)
1506 {
1507 //printf ("%s: found smell, following it, apparently (%d, %d)\n",& op->name,op->ms().smell,ms.smell);//D
1508 if (op->stats.Wis >= 10)
1509 smell = ms.smell - 1; // smarter: tell others
1510
1511 sdir = ndir;
1512
1513 // perturbing the path might let the monster lose track,
1514 // but it will also widen the actual path, spreading information
1515 if (op->stats.Wis >= 15 && !rndm (20)) // even smarter, deviate and spread?
1516 sdir = absdir (sdir + 1 - rndm (2) * 2);
1517 }
1518 }
1519 }
1520
1521 if (sdir)
1522 dir = sdir;
1523 else if (smell)
1524 {
1525 // no better smell found, so assume the player jumped, and erase this smell
1526 //printf ("erasing smell %d\n", op->ms ().smell);//D
1527 unordered_mapwalk (op, -1, -1, 1, 1)
1528 m->at (nx, ny).smell = 0;
1529 }
1530 }
1531
1532//+GPL
1533
1534 if (QUERY_FLAG (op, FLAG_SCARED) || QUERY_FLAG (op, FLAG_RUN_AWAY))
1535 dir = absdir (dir + 4);
1536
1537 if (QUERY_FLAG (op, FLAG_CONFUSED))
1538 dir = absdir (dir + rndm (3) + rndm (3) - 2);
1539
1540 pre_att_dir = dir; /* remember the original direction */
1541
1542 if ((op->attack_movement & LO4) && !QUERY_FLAG (op, FLAG_SCARED))
1543 {
1544 switch (op->attack_movement & LO4)
1545 {
1546 case DISTATT:
1547 dir = dist_att (dir, op, enemy, part, &rv);
1548 break;
1549
1550 case RUNATT:
1551 dir = run_att (dir, op, enemy, part, &rv);
1552 break;
1553
1554 case HITRUN:
1555 dir = hitrun_att (dir, op, enemy);
1556 break;
1557
1558 case WAITATT:
1559 dir = wait_att (dir, op, enemy, part, &rv);
1560 break;
1561
1562 case RUSH: /* default - monster normally moves towards player */
1563 case ALLRUN:
1564 break;
1565
1566 case DISTHIT:
1567 dir = disthit_att (dir, op, enemy, part, &rv);
1568 break;
1569
1570 case WAIT2:
1571 dir = wait_att2 (dir, op, enemy, part, &rv);
1572 break;
1573
1574 default:
1575 LOG (llevDebug, "Illegal low mon-move: %d\n", op->attack_movement & LO4);
1576 }
1577 }
1578
1579 if (!dir)
1580 return 0;
1581
1582 if (!QUERY_FLAG (op, FLAG_STAND_STILL))
1583 {
1584 if (move_object (op, dir)) /* Can the monster move directly toward player? */
1585 {
1586 /* elmex: Turn our monster after it moved if it has DISTATT attack */
1587 if ((op->attack_movement & LO4) == DISTATT)
1588 op->direction = pre_att_dir;
1589
1590 return 0;
1591 }
1592
1593 if (QUERY_FLAG (op, FLAG_SCARED) || !can_hit (part, enemy, &rv) || QUERY_FLAG (op, FLAG_RUN_AWAY))
1594 {
1595 /* Try move around corners if !close */
1596 int maxdiff = (QUERY_FLAG (op, FLAG_ONLY_ATTACK) || rndm (2)) ? 1 : 2;
1597
1598 for (diff = 1; diff <= maxdiff; diff++)
1599 {
1600 /* try different detours */
1601 int m = 1 - rndm (2) * 2; /* Try left or right first? */
1602
1603 if (move_object (op, absdir (dir + diff * m)) || move_object (op, absdir (dir - diff * m)))
1604 return 0;
1605 }
1606 }
1607 } /* if monster is not standing still */
1608
1609 /* elmex: Turn our monster after it moved if it has DISTATT attack */
1610 if ((op->attack_movement & LO4) == DISTATT)
1611 op->direction = pre_att_dir;
1612
1613 /*
1614 * Eneq(@csd.uu.se): Patch to make RUN_AWAY or SCARED monsters move a random
1615 * direction if they can't move away.
1616 */
1617 if (!QUERY_FLAG (op, FLAG_ONLY_ATTACK) && (QUERY_FLAG (op, FLAG_RUN_AWAY) || QUERY_FLAG (op, FLAG_SCARED)))
1618 if (move_randomly (op))
1619 return 0;
1620
1621 /*
1622 * Try giving the monster a new enemy - the player that is closest
1623 * to it. In this way, it won't just keep trying to get to a target
1624 * that is inaccessible.
1625 * This could be more clever - it should go through a list of several
1626 * enemies, as it is now, you could perhaps get situations where there
1627 * are two players flanking the monster at close distance, but which
1628 * the monster can't get to, and a third one at a far distance that
1629 * the monster could get to - as it is, the monster won't look at that
1630 * third one.
1631 */
1632 if (!QUERY_FLAG (op, FLAG_FRIENDLY) && enemy == op->enemy)
1633 {
1634 object *nearest_player = get_nearest_player (op);
1635
1636 if (nearest_player && nearest_player != enemy && !can_hit (part, enemy, &rv))
1637 {
1638 op->enemy = 0;
1639 enemy = nearest_player;
1640 }
1641 }
1642
1643 if (!QUERY_FLAG (op, FLAG_SCARED) && can_hit (part, enemy, &rv))
1644 {
1645 /* The adjustement to wc that was here before looked totally bogus -
1646 * since wc can in fact get negative, that would mean by adding
1647 * the current wc, the creature gets better? Instead, just
1648 * add a fixed amount - nasty creatures that are runny away should
1649 * still be pretty nasty.
1650 */
1651 if (QUERY_FLAG (op, FLAG_RUN_AWAY))
1652 {
1653 part->stats.wc += 10;
1654 skill_attack (enemy, part, 0, NULL, NULL);
1655 part->stats.wc -= 10;
1656 }
1657 else
1658 skill_attack (enemy, part, 0, NULL, NULL);
1659 } /* if monster is in attack range */
1660
1661 if (QUERY_FLAG (part, FLAG_FREED)) /* Might be freed by ghost-attack or hit-back */
1662 return 1;
1663
1664 if (QUERY_FLAG (op, FLAG_ONLY_ATTACK))
1665 {
1666 op->drop_and_destroy ();
1667 return 1;
1668 }
1669
1670 return 0;
1671}
1672
1671/* 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
1672 * 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
1673 * 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.
1674 * modified by MSW to use the get_rangevector so that map tiling works 1676 * modified by MSW to use the get_rangevector so that map tiling works
1675 * 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
1676 * 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
1677 * be within the valid range. MSW 2001-08-05 1679 * be within the valid range. MSW 2001-08-05
1678 * 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
1679 */ 1681 */
1680
1681int 1682int
1682can_detect_enemy (object *op, object *enemy, rv_vector * rv) 1683can_detect_enemy (object *op, object *enemy, rv_vector * rv)
1683{ 1684{
1684 int radius = MIN_MON_RADIUS, hide_discovery;
1685
1686 /* null detection for any of these condtions always */ 1685 /* null detection for any of these condtions always */
1687 if (!op || !enemy || !op->map || !enemy->map) 1686 if (!op || !enemy || !op->map || !enemy->map)
1688 return 0; 1687 return 0;
1689 1688
1690 /* 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 */
… …
1692 return 0; 1691 return 0;
1693 1692
1694 get_rangevector (op, enemy, rv, 0); 1693 get_rangevector (op, enemy, rv, 0);
1695 1694
1696 /* Monsters always ignore the DM */ 1695 /* Monsters always ignore the DM */
1697 if ((op->type != PLAYER) && QUERY_FLAG (enemy, FLAG_WIZ)) 1696 if (!op->is_player () && QUERY_FLAG (enemy, FLAG_WIZ))
1698 return 0; 1697 return 0;
1699 1698
1700 /* simple check. Should probably put some range checks in here. */ 1699 /* simple check. Should probably put some range checks in here. */
1701 if (can_see_enemy (op, enemy)) 1700 if (can_see_enemy (op, enemy))
1702 return 1; 1701 return 1;
1703 1702
1704 /* 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
1705 * finding enemies! 1704 * finding enemies!
1706 */ 1705 */
1707 if (op->type == PLAYER) 1706 if (op->is_player ())
1708 return 0; 1707 return 0;
1709 1708
1710 /* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE 1709 /* Quality invisible? Bah, we wont see them w/o SEE_INVISIBLE
1711 * 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
1712 */ 1711 */
1713 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)))
1714 return 0; 1713 return 0;
1715 1714
1715 int radius = MIN_MON_RADIUS;
1716
1716 /* use this for invis also */ 1717 /* use this for invis also */
1717 hide_discovery = op->stats.Int / 5; 1718 int hide_discovery = op->stats.Int / 5;
1718 1719
1719 /* Determine Detection radii */ 1720 /* Determine Detection radii */
1720 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) */
1721 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);
1722 else 1723 else
1723 { /* a level/INT/Dex adjustment for hiding */ 1724 { /* a level/INT/Dex adjustment for hiding */
1724 object *sk_hide;
1725 int bonus = (op->level / 2) + (op->stats.Int / 5); 1725 int bonus = op->level / 2 + op->stats.Int / 5;
1726 1726
1727 if (enemy->type == PLAYER) 1727 if (enemy->is_player ())
1728 { 1728 {
1729 if ((sk_hide = find_skill_by_number (enemy, SK_HIDING))) 1729 if (object *sk_hide = find_skill_by_number (enemy, SK_HIDING))
1730 bonus -= sk_hide->level; 1730 bonus -= sk_hide->level;
1731 else 1731 else
1732 { 1732 {
1733 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");
1734 make_visible (enemy); 1734 make_visible (enemy);
… …
1743 } /* else creature has modifiers for hiding */ 1743 } /* else creature has modifiers for hiding */
1744 1744
1745 /* Radii stealth adjustment. Only if you are stealthy 1745 /* Radii stealth adjustment. Only if you are stealthy
1746 * will you be able to sneak up closer to creatures */ 1746 * will you be able to sneak up closer to creatures */
1747 if (QUERY_FLAG (enemy, FLAG_STEALTH)) 1747 if (QUERY_FLAG (enemy, FLAG_STEALTH))
1748 radius = radius / 2, hide_discovery = hide_discovery / 3; 1748 {
1749 radius /= 2;
1750 hide_discovery /= 3;
1751 }
1749 1752
1750 /* Radii adjustment for enemy standing in the dark */ 1753 /* Radii adjustment for enemy standing in the dark */
1751 if (op->map->darkness > 0 && !stand_in_light (enemy)) 1754 if (!stand_in_light (enemy))
1752 { 1755 {
1753 /* on dark maps body heat can help indicate location with infravision 1756 /* on dark maps body heat can help indicate location with infravision
1754 * undead don't have body heat, so no benefit detecting them. 1757 * undead don't have body heat, so no benefit detecting them.
1755 */ 1758 */
1756 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))
1757 radius += op->map->darkness / 2; 1760 radius += op->map->darklevel () / 2;
1758 else 1761 else
1759 radius -= op->map->darkness / 2; 1762 radius -= op->map->darklevel () / 2;
1760 1763
1761 /* op next to a monster (and not in complete darkness) 1764 /* op next to a monster (and not in complete darkness)
1762 * the monster should have a chance to see you. 1765 * the monster should have a chance to see you.
1763 */ 1766 */
1764 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)
1765 radius = MIN_MON_RADIUS; 1768 radius = MIN_MON_RADIUS;
1766 } /* if on dark map */ 1769 } /* if on dark map */
1767 1770
1768 /* Lets not worry about monsters that have incredible detection 1771 /* Lets not worry about monsters that have incredible detection
1769 * 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
… …
1771 * 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
1772 * do something. Note that the distance field in the 1775 * do something. Note that the distance field in the
1773 * 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
1774 * find that. 1777 * find that.
1775 */ 1778 */
1776 if (radius > 13) 1779 // note that the above reasoning was utter bullshit even at the time it was written
1777 radius = 13; 1780 // we use 25, lets see if we have the cpu time for it
1781 radius = min (25, radius);
1778 1782
1779 /* Enemy in range! Now test for detection */ 1783 /* Enemy in range! Now test for detection */
1780 if ((int) rv->distance <= radius) 1784 if (rv->distance <= radius)
1781 { 1785 {
1782 /* ah, we are within range, detected? take cases */ 1786 /* ah, we are within range, detected? take cases */
1783 if (!enemy->invisible) /* enemy in dark squares... are seen! */ 1787 if (!enemy->invisible) /* enemy in dark squares... are seen! */
1784 return 1; 1788 return 1;
1785 1789
1786 /* hidden or low-quality invisible */ 1790 /* hidden or low-quality invisible */
1787 if (enemy->hide && (rv->distance <= 1) && (rndm (100) <= hide_discovery)) 1791 if (enemy->flag [FLAG_HIDDEN] && rv->distance <= 1 && rndm (100) <= hide_discovery)
1788 { 1792 {
1789 make_visible (enemy); 1793 make_visible (enemy);
1794
1790 /* inform players of new status */ 1795 /* inform players of new status */
1791 if (enemy->type == PLAYER && player_can_view (enemy, op)) 1796 if (enemy->type == PLAYER && player_can_view (enemy, op))
1792 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
1793 return 1; /* detected enemy */ 1799 return 1; /* detected enemy */
1794 } 1800 }
1795 else if (enemy->invisible) 1801 else if (enemy->invisible)
1796 { 1802 {
1797 /* Change this around - instead of negating the invisible, just 1803 /* Change this around - instead of negating the invisible, just
1798 * 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
1799 * do something to you. Decreasing the duration of invisible 1805 * do something to you. Decreasing the duration of invisible
1800 * 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
1801 * can then basically negate the spell. The spell isn't negated - 1807 * can then basically negate the spell. The spell isn't negated -
1802 * they just know where you are! 1808 * they just know where you are!
1803 */ 1809 */
1804 if ((rndm (50)) <= hide_discovery) 1810 if (rndm (50) <= hide_discovery)
1805 { 1811 {
1806 if (enemy->type == PLAYER) 1812 if (enemy->type == PLAYER)
1807 {
1808 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));
1809 } 1814
1810 return 1; 1815 return 1;
1811 } 1816 }
1812 } 1817 }
1813 } /* within range */ 1818 } /* within range */
1814 1819
1815 /* Wasn't detected above, so still hidden */ 1820 /* Wasn't detected above, so still hidden */
1816 return 0; 1821 return 0;
1817} 1822}
1818 1823
1819/* 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
1820 * intellegent algorithm. For one thing, we ignore los here, SO it 1825 * intelligent algorithm. For one thing, we ignore los here, SO it
1821 * 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
1822 * other side of a wall (!). 1827 * other side of a wall (!).
1823 */ 1828 */
1824int 1829int
1825stand_in_light (object *op) 1830stand_in_light (object *op)
1826{ 1831{
1827 sint16 nx, ny;
1828 maptile *m;
1829
1830 if (!op) 1832 if (op)
1833 {
1834 if (!op->is_on_map ())
1831 return 0; 1835 return 0;
1832 1836
1837 if (op->map->darklevel () <= 0)
1838 return 1;
1839
1833 if (op->glow_radius > 0) 1840 if (op->glow_radius > 0)
1834 return 1; 1841 return 1;
1835 1842
1836 if (op->map) 1843 if (op->map)
1837 { 1844 unordered_mapwalk (op, -MAX_LIGHT_RADIUS, -MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS, MAX_LIGHT_RADIUS)
1838 int x, y, x1, y1; 1845 {
1839
1840 /* 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
1841 * 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.
1842 */
1843 for (x = op->x - MAX_LIGHT_RADII; x <= op->x + MAX_LIGHT_RADII; x++)
1844 {
1845 for (y = op->y - MAX_LIGHT_RADII; y <= op->y + MAX_LIGHT_RADII; y++)
1846 { 1848 */
1847 m = op->map; 1849 int light = m->at (nx, ny).light;
1848 nx = x;
1849 ny = y;
1850 1850
1851 if (get_map_flags (m, &m, nx, ny, &nx, &ny) & P_OUT_OF_MAP) 1851 if (expect_false (light > 0) && idistance (dx, dy) <= light)
1852 continue;
1853
1854 x1 = abs (x - op->x) * abs (x - op->x);
1855 y1 = abs (y - op->y) * abs (y - op->y);
1856 if (isqrt (x1 + y1) < GET_MAP_LIGHT (m, nx, ny))
1857 return 1; 1852 return 1;
1858 } 1853 }
1859 }
1860 } 1854 }
1861 1855
1862 return 0; 1856 return 0;
1863} 1857}
1864 1858
… …
1888 { 1882 {
1889 /* HIDDEN ENEMY. by definition, you can't see hidden stuff! 1883 /* HIDDEN ENEMY. by definition, you can't see hidden stuff!
1890 * However,if you carry any source of light, then the hidden 1884 * However,if you carry any source of light, then the hidden
1891 * creature is seeable (and stupid) */ 1885 * creature is seeable (and stupid) */
1892 1886
1893 if (has_carried_lights (enemy)) 1887 if (enemy->has_carried_lights ())
1894 { 1888 {
1895 if (enemy->hide) 1889 if (enemy->flag [FLAG_HIDDEN])
1896 { 1890 {
1897 make_visible (enemy); 1891 make_visible (enemy);
1898 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!");
1899 } 1893 }
1894
1900 return 1; 1895 return 1;
1901 } 1896 }
1902 else if (enemy->hide) 1897 else if (enemy->flag [FLAG_HIDDEN])
1903 return 0; 1898 return 0;
1904 1899
1905 /* Invisible enemy. Break apart the check for invis undead/invis looker 1900 /* Invisible enemy. Break apart the check for invis undead/invis looker
1906 * 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,
1907 * and making it a conditional makes the code pretty ugly. 1902 * and making it a conditional makes the code pretty ugly.
1908 */ 1903 */
1909 if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE)) 1904 if (!QUERY_FLAG (looker, FLAG_SEE_INVISIBLE))
1910 {
1911 if (makes_invisible_to (enemy, looker)) 1905 if (makes_invisible_to (enemy, looker))
1912 return 0; 1906 return 0;
1913 }
1914 } 1907 }
1915 else if (looker->type == PLAYER) /* for players, a (possible) shortcut */ 1908 else if (looker->is_player ()) /* for players, a (possible) shortcut */
1916 if (player_can_view (looker, enemy)) 1909 if (player_can_view (looker, enemy))
1917 return 1; 1910 return 1;
1918 1911
1919 /* ENEMY IN DARK MAP. Without infravision, the enemy is not seen 1912 /* ENEMY IN DARK MAP. Without infravision, the enemy is not seen
1920 * unless they carry a light or stand in light. Darkness doesnt 1913 * unless they carry a light or stand in light. Darkness doesnt
… …
1923 * we care about the enemy maps status, not the looker. 1916 * we care about the enemy maps status, not the looker.
1924 * only relevant for tiled maps, but it is possible that the 1917 * only relevant for tiled maps, but it is possible that the
1925 * 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
1926 * case, the looker can still see the enemy 1919 * case, the looker can still see the enemy
1927 */ 1920 */
1928 if (enemy->map->darkness > 0 && !stand_in_light (enemy) 1921 if (!stand_in_light (enemy)
1929 && (!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)))
1930 return 0; 1923 return 0;
1931 1924
1932 return 1; 1925 return 1;
1933} 1926}
1927
1928//-GPL

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