1 /* $NetBSD: hack.mon.c,v 1.14 2011/08/07 06:03:45 dholland Exp $ */
2
3 /*
4 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
5 * Amsterdam
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * - Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * - Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * - Neither the name of the Stichting Centrum voor Wiskunde en
20 * Informatica, nor the names of its contributors may be used to endorse or
21 * promote products derived from this software without specific prior
22 * written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
27 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
28 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 /*
38 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
39 * All rights reserved.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 * 1. Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. The name of the author may not be used to endorse or promote products
50 * derived from this software without specific prior written permission.
51 *
52 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
54 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
55 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
56 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
57 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
58 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
59 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
60 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
61 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 */
63
64 #include <stdlib.h>
65 #include "hack.h"
66 #include "extern.h"
67 #include "hack.mfndpos.h"
68
69 static int warnlevel; /* used by movemon and dochugw */
70 static long lastwarntime;
71 static int lastwarnlev;
72
73 static const char *const warnings[] = {
74 "white", "pink", "red", "ruby", "purple", "black"
75 };
76
77 static int dochugw(struct monst *);
78 static void mpickgold(struct monst *);
79 static void mpickgems(struct monst *);
80 static void dmonsfree(void);
81 static int ishuman(struct monst *);
82
83 void
movemon(void)84 movemon(void)
85 {
86 struct monst *mtmp;
87 int fr;
88
89 warnlevel = 0;
90
91 while (1) {
92 /* find a monster that we haven't treated yet */
93 /*
94 * note that mtmp or mtmp->nmon might get killed while mtmp
95 * moves, so we cannot just walk down the chain (even new
96 * monsters might get created!)
97 */
98 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
99 if (mtmp->mlstmv < moves)
100 goto next_mon;
101 /* treated all monsters */
102 break;
103
104 next_mon:
105 mtmp->mlstmv = moves;
106
107 /* most monsters drown in pools */
108 {
109 boolean inpool, iseel;
110
111 inpool = (levl[mtmp->mx][mtmp->my].typ == POOL);
112 iseel = (mtmp->data->mlet == ';');
113 if (inpool && !iseel) {
114 if (cansee(mtmp->mx, mtmp->my))
115 pline("%s drowns.", Monnam(mtmp));
116 mondead(mtmp);
117 continue;
118 }
119 /* but eels have a difficult time outside */
120 if (iseel && !inpool) {
121 if (mtmp->mhp > 1)
122 mtmp->mhp--;
123 mtmp->mflee = 1;
124 mtmp->mfleetim += 2;
125 }
126 }
127 if (mtmp->mblinded && !--mtmp->mblinded)
128 mtmp->mcansee = 1;
129 if (mtmp->mfleetim && !--mtmp->mfleetim)
130 mtmp->mflee = 0;
131 if (mtmp->mimic)
132 continue;
133 if (mtmp->mspeed != MSLOW || !(moves % 2)) {
134 /* continue if the monster died fighting */
135 fr = -1;
136 if (Conflict && cansee(mtmp->mx, mtmp->my)
137 && (fr = fightm(mtmp)) == 2)
138 continue;
139 if (fr < 0 && dochugw(mtmp))
140 continue;
141 }
142 if (mtmp->mspeed == MFAST && dochugw(mtmp))
143 continue;
144 }
145
146 warnlevel -= u.ulevel;
147 if (warnlevel >= SIZE(warnings))
148 warnlevel = SIZE(warnings) - 1;
149 if (warnlevel >= 0)
150 if (warnlevel > lastwarnlev || moves > lastwarntime + 5) {
151 const char *rr;
152 switch (Warning & (LEFT_RING | RIGHT_RING)) {
153 case LEFT_RING:
154 rr = "Your left ring glows";
155 break;
156 case RIGHT_RING:
157 rr = "Your right ring glows";
158 break;
159 case LEFT_RING | RIGHT_RING:
160 rr = "Both your rings glow";
161 break;
162 default:
163 rr = "Your fingertips glow";
164 break;
165 }
166 pline("%s %s!", rr, warnings[warnlevel]);
167 lastwarntime = moves;
168 lastwarnlev = warnlevel;
169 }
170 dmonsfree(); /* remove all dead monsters */
171 }
172
173 void
justswld(struct monst * mtmp,const char * name)174 justswld(struct monst *mtmp, const char *name)
175 {
176
177 mtmp->mx = u.ux;
178 mtmp->my = u.uy;
179 u.ustuck = mtmp;
180 pmon(mtmp);
181 kludge("%s swallows you!", name);
182 more();
183 seeoff(1);
184 u.uswallow = 1;
185 u.uswldtim = 0;
186 swallowed();
187 }
188
189 void
youswld(struct monst * mtmp,int dam,unsigned int die,const char * name)190 youswld(struct monst *mtmp, int dam, unsigned int die, const char *name)
191 {
192 if (mtmp != u.ustuck)
193 return;
194 kludge("%s digests you!", name);
195 u.uhp -= dam;
196 if (u.uswldtim++ >= die) { /* a3 */
197 pline("It totally digests you!");
198 u.uhp = -1;
199 }
200 if (u.uhp < 1)
201 done_in_by(mtmp);
202 #if 0
203 flags.botlx = 1; /* should we show status line ? */
204 #endif
205 }
206
207 static int
dochugw(struct monst * mtmp)208 dochugw(struct monst *mtmp)
209 {
210 int x = mtmp->mx;
211 int y = mtmp->my;
212 int dead = dochug(mtmp);
213 int dd;
214
215 if (!dead) /* monster still alive */
216 if (Warning)
217 if (!mtmp->mpeaceful)
218 if (mtmp->data->mlevel > warnlevel)
219 if ((dd = dist(mtmp->mx, mtmp->my)) < dist(x, y))
220 if (dd < 100)
221 if (!canseemon(mtmp))
222 warnlevel = mtmp->data->mlevel;
223 return (dead);
224 }
225
226 /* returns 1 if monster died moving, 0 otherwise */
227 int
dochug(struct monst * mtmp)228 dochug(struct monst *mtmp)
229 {
230 const struct permonst *mdat;
231 int tmp = 0, nearby, scared;
232
233 if (mtmp->cham && !rn2(6))
234 (void) newcham(mtmp, &mons[dlevel + 14 + rn2(CMNUM - 14 - dlevel)]);
235 mdat = mtmp->data;
236 if (mdat->mlevel < 0)
237 panic("bad monster %c (%d)", mdat->mlet, mdat->mlevel);
238
239 /* regenerate monsters */
240 if ((!(moves % 20) || strchr(MREGEN, mdat->mlet)) &&
241 mtmp->mhp < mtmp->mhpmax)
242 mtmp->mhp++;
243
244 if (mtmp->mfroz)
245 return (0); /* frozen monsters don't do anything */
246
247 if (mtmp->msleep) {
248 /* wake up, or get out of here. */
249 /* ettins are hard to surprise */
250 /* Nymphs and Leprechauns do not easily wake up */
251 if (cansee(mtmp->mx, mtmp->my) &&
252 (!Stealth || (mdat->mlet == 'e' && rn2(10))) &&
253 (!strchr("NL", mdat->mlet) || !rn2(50)) &&
254 (Aggravate_monster || strchr("d1", mdat->mlet)
255 || (!rn2(7) && !mtmp->mimic)))
256 mtmp->msleep = 0;
257 else
258 return (0);
259 }
260 /* not frozen or sleeping: wipe out texts written in the dust */
261 wipe_engr_at(mtmp->mx, mtmp->my, 1);
262
263 /* confused monsters get unconfused with small probability */
264 if (mtmp->mconf && !rn2(50))
265 mtmp->mconf = 0;
266
267 /* some monsters teleport */
268 if (mtmp->mflee && strchr("tNL", mdat->mlet) && !rn2(40)) {
269 rloc(mtmp);
270 return (0);
271 }
272 if (mdat->mmove < rnd(6))
273 return (0);
274
275 /* fleeing monsters might regain courage */
276 if (mtmp->mflee && !mtmp->mfleetim
277 && mtmp->mhp == mtmp->mhpmax && !rn2(25))
278 mtmp->mflee = 0;
279
280 nearby = (dist(mtmp->mx, mtmp->my) < 3);
281 scared = (nearby && (sengr_at("Elbereth", u.ux, u.uy) ||
282 sobj_at(SCR_SCARE_MONSTER, u.ux, u.uy)));
283 if (scared && !mtmp->mflee) {
284 mtmp->mflee = 1;
285 mtmp->mfleetim = (rn2(7) ? rnd(10) : rnd(100));
286 }
287 if (!nearby ||
288 mtmp->mflee ||
289 mtmp->mconf ||
290 (mtmp->minvis && !rn2(3)) ||
291 (strchr("BIuy", mdat->mlet) && !rn2(4)) ||
292 (mdat->mlet == 'L' && !u.ugold && (mtmp->mgold || rn2(2))) ||
293 (!mtmp->mcansee && !rn2(4)) ||
294 mtmp->mpeaceful
295 ) {
296 tmp = m_move(mtmp, 0); /* 2: monster died moving */
297 if (tmp == 2 || (tmp && mdat->mmove <= 12))
298 return (tmp == 2);
299 }
300 if (!strchr("Ea", mdat->mlet) && nearby &&
301 !mtmp->mpeaceful && u.uhp > 0 && !scared) {
302 if (mhitu(mtmp))
303 return (1); /* monster died (e.g. 'y' or 'F') */
304 }
305 /* extra movement for fast monsters */
306 if (mdat->mmove - 12 > rnd(12))
307 tmp = m_move(mtmp, 1);
308 return (tmp == 2);
309 }
310
311 int
m_move(struct monst * mtmp,int after)312 m_move(struct monst *mtmp, int after)
313 {
314 struct monst *mtmp2;
315 int nx, ny, omx, omy, appr, nearer, cnt, i, j;
316 xchar gx, gy, nix, niy, chcnt;
317 schar chi;
318 boolean likegold = 0, likegems = 0, likeobjs = 0;
319 char msym = mtmp->data->mlet;
320 schar mmoved = 0; /* not strictly nec.: chi >= 0 will
321 * do */
322 coord poss[9];
323 int info[9];
324
325 if (mtmp->mfroz || mtmp->msleep)
326 return (0);
327 if (mtmp->mtrapped) {
328 i = mintrap(mtmp);
329 if (i == 2)
330 return (2); /* he died */
331 if (i == 1)
332 return (0); /* still in trap, so didnt move */
333 }
334 if (mtmp->mhide && o_at(mtmp->mx, mtmp->my) && rn2(10))
335 return (0); /* do not leave hiding place */
336
337 #ifndef NOWORM
338 if (mtmp->wormno)
339 goto not_special;
340 #endif /* NOWORM */
341
342 /* my dog gets a special treatment */
343 if (mtmp->mtame) {
344 return (dog_move(mtmp, after));
345 }
346 /* likewise for shopkeeper */
347 if (mtmp->isshk) {
348 mmoved = shk_move(mtmp);
349 if (mmoved >= 0)
350 goto postmov;
351 mmoved = 0; /* follow player outside shop */
352 }
353 /* and for the guard */
354 if (mtmp->isgd) {
355 mmoved = gd_move();
356 goto postmov;
357 }
358 /*
359 * teleport if that lies in our nature ('t') or when badly wounded
360 * ('1')
361 */
362 if ((msym == 't' && !rn2(5))
363 || (msym == '1' && (mtmp->mhp < 7 || (!xdnstair && !rn2(5))
364 || levl[u.ux][u.uy].typ == STAIRS))) {
365 if (mtmp->mhp < 7 || (msym == 't' && rn2(2)))
366 rloc(mtmp);
367 else
368 mnexto(mtmp);
369 mmoved = 1;
370 goto postmov;
371 }
372 /* spit fire ('D') or use a wand ('1') when appropriate */
373 if (strchr("D1", msym))
374 inrange(mtmp);
375
376 if (msym == 'U' && !mtmp->mcan && canseemon(mtmp) &&
377 mtmp->mcansee && rn2(5)) {
378 if (!Confusion)
379 pline("%s's gaze has confused you!", Monnam(mtmp));
380 else
381 pline("You are getting more and more confused.");
382 if (rn2(3))
383 mtmp->mcan = 1;
384 Confusion += d(3, 4); /* timeout */
385 }
386 not_special:
387 if (!mtmp->mflee && u.uswallow && u.ustuck != mtmp)
388 return (1);
389 appr = 1;
390 if (mtmp->mflee)
391 appr = -1;
392 if (mtmp->mconf || Invis || !mtmp->mcansee ||
393 (strchr("BIy", msym) && !rn2(3)))
394 appr = 0;
395 omx = mtmp->mx;
396 omy = mtmp->my;
397 gx = u.ux;
398 gy = u.uy;
399 if (msym == 'L' && appr == 1 && mtmp->mgold > u.ugold)
400 appr = -1;
401
402 /*
403 * random criterion for 'smell' or track finding ability should use
404 * mtmp->msmell or sth
405 */
406 if (msym == '@' ||
407 ('a' <= msym && msym <= 'z')) {
408 coord *cp;
409 schar mroom;
410 mroom = inroom(omx, omy);
411 if (mroom < 0 || mroom != inroom(u.ux, u.uy)) {
412 cp = gettrack(omx, omy);
413 if (cp) {
414 gx = cp->x;
415 gy = cp->y;
416 }
417 }
418 }
419 /* look for gold or jewels nearby */
420 likegold = (strchr("LOD", msym) != NULL);
421 likegems = (strchr("ODu", msym) != NULL);
422 likeobjs = mtmp->mhide;
423 #define SRCHRADIUS 25
424 {
425 xchar mind = SRCHRADIUS; /* not too far away */
426 int dd;
427 if (likegold) {
428 struct gold *gold;
429 for (gold = fgold; gold; gold = gold->ngold)
430 if ((dd = DIST(omx, omy, gold->gx, gold->gy)) < mind) {
431 mind = dd;
432 gx = gold->gx;
433 gy = gold->gy;
434 }
435 }
436 if (likegems || likeobjs) {
437 struct obj *otmp;
438 for (otmp = fobj; otmp; otmp = otmp->nobj)
439 if (likeobjs || otmp->olet == GEM_SYM)
440 if (msym != 'u' ||
441 objects[otmp->otyp].g_val != 0)
442 if ((dd = DIST(omx, omy, otmp->ox, otmp->oy)) < mind) {
443 mind = dd;
444 gx = otmp->ox;
445 gy = otmp->oy;
446 }
447 }
448 if (mind < SRCHRADIUS && appr == -1) {
449 if (dist(omx, omy) < 10) {
450 gx = u.ux;
451 gy = u.uy;
452 } else
453 appr = 1;
454 }
455 }
456 nix = omx;
457 niy = omy;
458 cnt = mfndpos(mtmp, poss, info,
459 msym == 'u' ? NOTONL :
460 (msym == '@' || msym == '1') ? (ALLOW_SSM | ALLOW_TRAPS) :
461 strchr(UNDEAD, msym) ? NOGARLIC : ALLOW_TRAPS);
462 /* ALLOW_ROCK for some monsters ? */
463 chcnt = 0;
464 chi = -1;
465 for (i = 0; i < cnt; i++) {
466 nx = poss[i].x;
467 ny = poss[i].y;
468 for (j = 0; j < MTSZ && j < cnt - 1; j++)
469 if (nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y)
470 if (rn2(4 * (cnt - j)))
471 goto nxti;
472 #ifdef STUPID
473 /* some stupid compilers think that this is too complicated */
474 {
475 int d1 = DIST(nx, ny, gx, gy);
476 int d2 = DIST(nix, niy, gx, gy);
477 nearer = (d1 < d2);
478 }
479 #else
480 nearer = (DIST(nx, ny, gx, gy) < DIST(nix, niy, gx, gy));
481 #endif /* STUPID */
482 if ((appr == 1 && nearer) || (appr == -1 && !nearer) ||
483 !mmoved ||
484 (!appr && !rn2(++chcnt))) {
485 nix = nx;
486 niy = ny;
487 chi = i;
488 mmoved = 1;
489 }
490 nxti: ;
491 }
492 if (mmoved) {
493 if (info[chi] & ALLOW_M) {
494 mtmp2 = m_at(nix, niy);
495 if (mtmp2 == NULL)
496 panic("error in m_move");
497 if (hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
498 hitmm(mtmp2, mtmp) == 2)
499 return (2);
500 return (0);
501 }
502 if (info[chi] & ALLOW_U) {
503 (void) hitu(mtmp, d(mtmp->data->damn, mtmp->data->damd) + 1);
504 return (0);
505 }
506 mtmp->mx = nix;
507 mtmp->my = niy;
508 for (j = MTSZ - 1; j > 0; j--)
509 mtmp->mtrack[j] = mtmp->mtrack[j - 1];
510 mtmp->mtrack[0].x = omx;
511 mtmp->mtrack[0].y = omy;
512 #ifndef NOWORM
513 if (mtmp->wormno)
514 worm_move(mtmp);
515 #endif /* NOWORM */
516 } else {
517 if (msym == 'u' && rn2(2)) {
518 rloc(mtmp);
519 return (0);
520 }
521 #ifndef NOWORM
522 if (mtmp->wormno)
523 worm_nomove(mtmp);
524 #endif /* NOWORM */
525 }
526 postmov:
527 if (mmoved == 1) {
528 if (mintrap(mtmp) == 2) /* he died */
529 return (2);
530 if (likegold)
531 mpickgold(mtmp);
532 if (likegems)
533 mpickgems(mtmp);
534 if (mtmp->mhide)
535 mtmp->mundetected = 1;
536 }
537 pmon(mtmp);
538 return (mmoved);
539 }
540
541 static void
mpickgold(struct monst * mtmp)542 mpickgold(struct monst *mtmp)
543 {
544 struct gold *gold;
545 while ((gold = g_at(mtmp->mx, mtmp->my)) != NULL) {
546 mtmp->mgold += gold->amount;
547 freegold(gold);
548 if (levl[mtmp->mx][mtmp->my].scrsym == '$')
549 newsym(mtmp->mx, mtmp->my);
550 }
551 }
552
553 static void
mpickgems(struct monst * mtmp)554 mpickgems(struct monst *mtmp)
555 {
556 struct obj *otmp;
557 for (otmp = fobj; otmp; otmp = otmp->nobj)
558 if (otmp->olet == GEM_SYM)
559 if (otmp->ox == mtmp->mx && otmp->oy == mtmp->my)
560 if (mtmp->data->mlet != 'u' || objects[otmp->otyp].g_val != 0) {
561 freeobj(otmp);
562 mpickobj(mtmp, otmp);
563 if (levl[mtmp->mx][mtmp->my].scrsym == GEM_SYM)
564 newsym(mtmp->mx, mtmp->my); /* %% */
565 return; /* pick only one object */
566 }
567 }
568
569 /* return number of acceptable neighbour positions */
570 int
mfndpos(struct monst * mon,coord poss[9],int info[9],int flag)571 mfndpos(struct monst *mon, coord poss[9], int info[9], int flag)
572 {
573 int x, y, nx, ny, cnt = 0, ntyp;
574 struct monst *mtmp;
575 int nowtyp;
576 boolean pool;
577
578 x = mon->mx;
579 y = mon->my;
580 nowtyp = levl[x][y].typ;
581
582 pool = (mon->data->mlet == ';');
583 nexttry: /* eels prefer the water, but if there is no
584 * water nearby, they will crawl over land */
585 if (mon->mconf) {
586 flag |= ALLOW_ALL;
587 flag &= ~NOTONL;
588 }
589 for (nx = x - 1; nx <= x + 1; nx++)
590 for (ny = y - 1; ny <= y + 1; ny++)
591 if (nx != x || ny != y)
592 if (isok(nx, ny))
593 if (!IS_ROCK(ntyp = levl[nx][ny].typ))
594 if (!(nx != x && ny != y && (nowtyp == DOOR || ntyp == DOOR)))
595 if ((ntyp == POOL) == pool) {
596 info[cnt] = 0;
597 if (nx == u.ux && ny == u.uy) {
598 if (!(flag & ALLOW_U))
599 continue;
600 info[cnt] = ALLOW_U;
601 } else if ((mtmp = m_at(nx, ny)) != NULL) {
602 if (!(flag & ALLOW_M))
603 continue;
604 info[cnt] = ALLOW_M;
605 if (mtmp->mtame) {
606 if (!(flag & ALLOW_TM))
607 continue;
608 info[cnt] |= ALLOW_TM;
609 }
610 }
611 if (sobj_at(CLOVE_OF_GARLIC, nx, ny)) {
612 if (flag & NOGARLIC)
613 continue;
614 info[cnt] |= NOGARLIC;
615 }
616 if (sobj_at(SCR_SCARE_MONSTER, nx, ny) ||
617 (!mon->mpeaceful && sengr_at("Elbereth", nx, ny))) {
618 if (!(flag & ALLOW_SSM))
619 continue;
620 info[cnt] |= ALLOW_SSM;
621 }
622 if (sobj_at(ENORMOUS_ROCK, nx, ny)) {
623 if (!(flag & ALLOW_ROCK))
624 continue;
625 info[cnt] |= ALLOW_ROCK;
626 }
627 if (!Invis && online(nx, ny)) {
628 if (flag & NOTONL)
629 continue;
630 info[cnt] |= NOTONL;
631 }
632 /*
633 * we cannot
634 * avoid
635 * traps of
636 * an unknown
637 * kind
638 */
639 {
640 struct trap *ttmp = t_at(nx, ny);
641 int tt;
642 if (ttmp) {
643 tt = 1 << ttmp->ttyp;
644 if (mon->mtrapseen & tt) {
645 if (!(flag & tt))
646 continue;
647 info[cnt] |= tt;
648 }
649 }
650 }
651 poss[cnt].x = nx;
652 poss[cnt].y = ny;
653 cnt++;
654 }
655 if (!cnt && pool && nowtyp != POOL) {
656 pool = FALSE;
657 goto nexttry;
658 }
659 return (cnt);
660 }
661
662 int
dist(int x,int y)663 dist(int x, int y)
664 {
665 return ((x - u.ux) * (x - u.ux) + (y - u.uy) * (y - u.uy));
666 }
667
668 void
poisoned(const char * string,const char * pname)669 poisoned(const char *string, const char *pname)
670 {
671 int i;
672
673 if (Blind)
674 pline("It was poisoned.");
675 else
676 pline("The %s was poisoned!", string);
677 if (Poison_resistance) {
678 pline("The poison doesn't seem to affect you.");
679 return;
680 }
681 i = rn2(10);
682 if (i == 0) {
683 u.uhp = -1;
684 pline("I am afraid the poison was deadly ...");
685 } else if (i <= 5) {
686 losestr(rn1(3, 3));
687 } else {
688 losehp(rn1(10, 6), pname);
689 }
690 if (u.uhp < 1) {
691 killer = pname;
692 done("died");
693 }
694 }
695
696 void
mondead(struct monst * mtmp)697 mondead(struct monst *mtmp)
698 {
699 relobj(mtmp, 1);
700 unpmon(mtmp);
701 relmon(mtmp);
702 unstuck(mtmp);
703 if (mtmp->isshk)
704 shkdead(mtmp);
705 if (mtmp->isgd)
706 gddead();
707 #ifndef NOWORM
708 if (mtmp->wormno)
709 wormdead(mtmp);
710 #endif /* NOWORM */
711 monfree(mtmp);
712 }
713
714 /* called when monster is moved to larger structure */
715 void
replmon(struct monst * mtmp,struct monst * mtmp2)716 replmon(struct monst *mtmp, struct monst *mtmp2)
717 {
718 relmon(mtmp);
719 monfree(mtmp);
720 mtmp2->nmon = fmon;
721 fmon = mtmp2;
722 if (u.ustuck == mtmp)
723 u.ustuck = mtmp2;
724 if (mtmp2->isshk)
725 replshk(mtmp, mtmp2);
726 if (mtmp2->isgd)
727 replgd(mtmp, mtmp2);
728 }
729
730 void
relmon(struct monst * mon)731 relmon(struct monst *mon)
732 {
733 struct monst *mtmp;
734
735 if (mon == fmon)
736 fmon = fmon->nmon;
737 else {
738 for (mtmp = fmon; mtmp->nmon != mon; mtmp = mtmp->nmon);
739 mtmp->nmon = mon->nmon;
740 }
741 }
742
743 /*
744 * we do not free monsters immediately, in order to have their name available
745 * shortly after their demise
746 */
747 static struct monst *fdmon; /* chain of dead monsters, need not to be
748 * saved */
749
750 void
monfree(struct monst * mtmp)751 monfree(struct monst *mtmp)
752 {
753 mtmp->nmon = fdmon;
754 fdmon = mtmp;
755 }
756
757 static void
dmonsfree(void)758 dmonsfree(void)
759 {
760 struct monst *mtmp;
761 while ((mtmp = fdmon) != NULL) {
762 fdmon = mtmp->nmon;
763 free(mtmp);
764 }
765 }
766
767 void
unstuck(struct monst * mtmp)768 unstuck(struct monst *mtmp)
769 {
770 if (u.ustuck == mtmp) {
771 if (u.uswallow) {
772 u.ux = mtmp->mx;
773 u.uy = mtmp->my;
774 u.uswallow = 0;
775 setsee();
776 docrt();
777 }
778 u.ustuck = 0;
779 }
780 }
781
782 void
killed(struct monst * mtmp)783 killed(struct monst *mtmp)
784 {
785 #ifdef lint
786 #define NEW_SCORING
787 #endif /* lint */
788 int tmp, nk, x, y;
789 const struct permonst *mdat;
790
791 if (mtmp->cham)
792 mtmp->data = PM_CHAMELEON;
793 mdat = mtmp->data;
794 if (Blind)
795 pline("You destroy it!");
796 else {
797 pline("You destroy %s!",
798 mtmp->mtame ? amonnam(mtmp, "poor") : monnam(mtmp));
799 }
800 if (u.umconf) {
801 if (!Blind)
802 pline("Your hands stop glowing blue.");
803 u.umconf = 0;
804 }
805 /* count killed monsters */
806 #define MAXMONNO 100
807 nk = 1; /* in case we cannot find it in mons */
808 tmp = mdat - mons; /* strchr in mons array (if not 'd', '@', ...) */
809 if (tmp >= 0 && tmp < CMNUM + 2) {
810 u.nr_killed[tmp]++;
811 if ((nk = u.nr_killed[tmp]) > MAXMONNO &&
812 !strchr(fut_geno, mdat->mlet))
813 charcat(fut_geno, mdat->mlet);
814 }
815 /* punish bad behaviour */
816 if (mdat->mlet == '@')
817 Telepat = 0, u.uluck -= 2;
818 if (mtmp->mpeaceful || mtmp->mtame)
819 u.uluck--;
820 if (mdat->mlet == 'u')
821 u.uluck -= 5;
822 if ((int) u.uluck < LUCKMIN)
823 u.uluck = LUCKMIN;
824
825 /* give experience points */
826 tmp = 1 + mdat->mlevel * mdat->mlevel;
827 if (mdat->ac < 3)
828 tmp += 2 * (7 - mdat->ac);
829 if (strchr("AcsSDXaeRTVWU&In:P", mdat->mlet))
830 tmp += 2 * mdat->mlevel;
831 if (strchr("DeV&P", mdat->mlet))
832 tmp += (7 * mdat->mlevel);
833 if (mdat->mlevel > 6)
834 tmp += 50;
835 if (mdat->mlet == ';')
836 tmp += 1000;
837
838 #ifdef NEW_SCORING
839 /*
840 * ------- recent addition: make nr of points decrease when this is
841 * not the first of this kind
842 */
843 {
844 int ul = u.ulevel;
845 int ml = mdat->mlevel;
846 int tmp2;
847
848 if (ul < 14) /* points are given based on present and
849 * future level */
850 for (tmp2 = 0; !tmp2 || ul + tmp2 <= ml; tmp2++)
851 if (u.uexp + 1 + (tmp + ((tmp2 <= 0) ? 0 : 4 << (tmp2 - 1))) / nk
852 >= 10 * pow((unsigned) (ul - 1)))
853 if (++ul == 14)
854 break;
855
856 tmp2 = ml - ul - 1;
857 tmp = (tmp + ((tmp2 < 0) ? 0 : 4 << tmp2)) / nk;
858 if (!tmp)
859 tmp = 1;
860 }
861 /* note: ul is not necessarily the future value of u.ulevel */
862 /* ------- end of recent valuation change ------- */
863 #endif /* NEW_SCORING */
864
865 more_experienced(tmp, 0);
866 flags.botl = 1;
867 while (u.ulevel < 14 && u.uexp >= newuexp()) {
868 pline("Welcome to experience level %u.", ++u.ulevel);
869 tmp = rnd(10);
870 if (tmp < 3)
871 tmp = rnd(10);
872 u.uhpmax += tmp;
873 u.uhp += tmp;
874 flags.botl = 1;
875 }
876
877 /* dispose of monster and make cadaver */
878 x = mtmp->mx;
879 y = mtmp->my;
880 mondead(mtmp);
881 tmp = mdat->mlet;
882 if (tmp == 'm') { /* he killed a minotaur, give him a wand of
883 * digging */
884 /* note: the dead minotaur will be on top of it! */
885 mksobj_at(WAN_DIGGING, x, y);
886 /* if(cansee(x,y)) atl(x,y,fobj->olet); */
887 stackobj(fobj);
888 } else
889 #ifndef NOWORM
890 if (tmp == 'w') {
891 mksobj_at(WORM_TOOTH, x, y);
892 stackobj(fobj);
893 } else
894 #endif /* NOWORM */
895 if (!letter(tmp) || (!strchr("mw", tmp) && !rn2(3)))
896 tmp = 0;
897
898 if (ACCESSIBLE(levl[x][y].typ)) /* might be mimic in wall or dead eel */
899 if (x != u.ux || y != u.uy) /* might be here after
900 * swallowed */
901 if (strchr("NTVm&", mdat->mlet) || rn2(5)) {
902 struct obj *obj2 = mkobj_at(tmp, x, y);
903 if (cansee(x, y))
904 atl(x, y, obj2->olet);
905 stackobj(obj2);
906 }
907 }
908
909 void
kludge(const char * str,const char * arg)910 kludge(const char *str, const char *arg)
911 {
912 if (Blind) {
913 if (*str == '%')
914 pline(str, "It");
915 else
916 pline(str, "it");
917 } else
918 pline(str, arg);
919 }
920
921 void
rescham(void)922 rescham(void)
923 { /* force all chameleons to become normal */
924 struct monst *mtmp;
925
926 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
927 if (mtmp->cham) {
928 mtmp->cham = 0;
929 (void) newcham(mtmp, PM_CHAMELEON);
930 }
931 }
932
933 /* make a chameleon look like a new monster */
934 /* returns 1 if the monster actually changed */
935 int
newcham(struct monst * mtmp,const struct permonst * mdat)936 newcham(struct monst *mtmp, const struct permonst *mdat)
937 {
938 int mhp, hpn, hpd;
939
940 if (mdat == mtmp->data)
941 return (0); /* still the same monster */
942 #ifndef NOWORM
943 if (mtmp->wormno)
944 wormdead(mtmp); /* throw tail away */
945 #endif /* NOWORM */
946 if (u.ustuck == mtmp) {
947 if (u.uswallow) {
948 u.uswallow = 0;
949 u.uswldtim = 0;
950 mnexto(mtmp);
951 docrt();
952 prme();
953 }
954 u.ustuck = 0;
955 }
956 hpn = mtmp->mhp;
957 hpd = (mtmp->data->mlevel) * 8;
958 if (!hpd)
959 hpd = 4;
960 mtmp->data = mdat;
961 mhp = (mdat->mlevel) * 8;
962 /* new hp: same fraction of max as before */
963 mtmp->mhp = 2 + (hpn * mhp) / hpd;
964 hpn = mtmp->mhpmax;
965 mtmp->mhpmax = 2 + (hpn * mhp) / hpd;
966 mtmp->minvis = (mdat->mlet == 'I') ? 1 : 0;
967 #ifndef NOWORM
968 if (mdat->mlet == 'w' && getwn(mtmp))
969 initworm(mtmp);
970 /* perhaps we should clear mtmp->mtame here? */
971 #endif /* NOWORM */
972 unpmon(mtmp); /* necessary for 'I' and to force pmon */
973 pmon(mtmp);
974 return (1);
975 }
976
977 /* Make monster mtmp next to you (if possible) */
978 void
mnexto(struct monst * mtmp)979 mnexto(struct monst *mtmp)
980 {
981 coord mm;
982 mm = enexto(u.ux, u.uy);
983 mtmp->mx = mm.x;
984 mtmp->my = mm.y;
985 pmon(mtmp);
986 }
987
988 static int
ishuman(struct monst * mtmp)989 ishuman(struct monst *mtmp)
990 {
991 return (mtmp->data->mlet == '@');
992 }
993
994 void
setmangry(struct monst * mtmp)995 setmangry(struct monst *mtmp)
996 {
997 if (!mtmp->mpeaceful)
998 return;
999 if (mtmp->mtame)
1000 return;
1001 mtmp->mpeaceful = 0;
1002 if (ishuman(mtmp))
1003 pline("%s gets angry!", Monnam(mtmp));
1004 }
1005
1006 /*
1007 * not one hundred procent correct: now a snake may hide under an invisible
1008 * object
1009 */
1010 int
canseemon(struct monst * mtmp)1011 canseemon(struct monst *mtmp)
1012 {
1013 return ((!mtmp->minvis || See_invisible)
1014 && (!mtmp->mhide || !o_at(mtmp->mx, mtmp->my))
1015 && cansee(mtmp->mx, mtmp->my));
1016 }
1017