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 <sys/cdefs.h>
65 #ifndef lint
66 __RCSID("$NetBSD: hack.mon.c,v 1.14 2011/08/07 06:03:45 dholland Exp $");
67 #endif /* not lint */
68
69 #include <stdlib.h>
70 #include "hack.h"
71 #include "extern.h"
72 #include "hack.mfndpos.h"
73
74 static int warnlevel; /* used by movemon and dochugw */
75 static long lastwarntime;
76 static int lastwarnlev;
77
78 static const char *const warnings[] = {
79 "white", "pink", "red", "ruby", "purple", "black"
80 };
81
82 static int dochugw(struct monst *);
83 static void mpickgold(struct monst *);
84 static void mpickgems(struct monst *);
85 static void dmonsfree(void);
86 static int ishuman(struct monst *);
87
88 void
movemon(void)89 movemon(void)
90 {
91 struct monst *mtmp;
92 int fr;
93
94 warnlevel = 0;
95
96 while (1) {
97 /* find a monster that we haven't treated yet */
98 /*
99 * note that mtmp or mtmp->nmon might get killed while mtmp
100 * moves, so we cannot just walk down the chain (even new
101 * monsters might get created!)
102 */
103 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
104 if (mtmp->mlstmv < moves)
105 goto next_mon;
106 /* treated all monsters */
107 break;
108
109 next_mon:
110 mtmp->mlstmv = moves;
111
112 /* most monsters drown in pools */
113 {
114 boolean inpool, iseel;
115
116 inpool = (levl[mtmp->mx][mtmp->my].typ == POOL);
117 iseel = (mtmp->data->mlet == ';');
118 if (inpool && !iseel) {
119 if (cansee(mtmp->mx, mtmp->my))
120 pline("%s drowns.", Monnam(mtmp));
121 mondead(mtmp);
122 continue;
123 }
124 /* but eels have a difficult time outside */
125 if (iseel && !inpool) {
126 if (mtmp->mhp > 1)
127 mtmp->mhp--;
128 mtmp->mflee = 1;
129 mtmp->mfleetim += 2;
130 }
131 }
132 if (mtmp->mblinded && !--mtmp->mblinded)
133 mtmp->mcansee = 1;
134 if (mtmp->mfleetim && !--mtmp->mfleetim)
135 mtmp->mflee = 0;
136 if (mtmp->mimic)
137 continue;
138 if (mtmp->mspeed != MSLOW || !(moves % 2)) {
139 /* continue if the monster died fighting */
140 fr = -1;
141 if (Conflict && cansee(mtmp->mx, mtmp->my)
142 && (fr = fightm(mtmp)) == 2)
143 continue;
144 if (fr < 0 && dochugw(mtmp))
145 continue;
146 }
147 if (mtmp->mspeed == MFAST && dochugw(mtmp))
148 continue;
149 }
150
151 warnlevel -= u.ulevel;
152 if (warnlevel >= SIZE(warnings))
153 warnlevel = SIZE(warnings) - 1;
154 if (warnlevel >= 0)
155 if (warnlevel > lastwarnlev || moves > lastwarntime + 5) {
156 const char *rr;
157 switch (Warning & (LEFT_RING | RIGHT_RING)) {
158 case LEFT_RING:
159 rr = "Your left ring glows";
160 break;
161 case RIGHT_RING:
162 rr = "Your right ring glows";
163 break;
164 case LEFT_RING | RIGHT_RING:
165 rr = "Both your rings glow";
166 break;
167 default:
168 rr = "Your fingertips glow";
169 break;
170 }
171 pline("%s %s!", rr, warnings[warnlevel]);
172 lastwarntime = moves;
173 lastwarnlev = warnlevel;
174 }
175 dmonsfree(); /* remove all dead monsters */
176 }
177
178 void
justswld(struct monst * mtmp,const char * name)179 justswld(struct monst *mtmp, const char *name)
180 {
181
182 mtmp->mx = u.ux;
183 mtmp->my = u.uy;
184 u.ustuck = mtmp;
185 pmon(mtmp);
186 kludge("%s swallows you!", name);
187 more();
188 seeoff(1);
189 u.uswallow = 1;
190 u.uswldtim = 0;
191 swallowed();
192 }
193
194 void
youswld(struct monst * mtmp,int dam,unsigned int die,const char * name)195 youswld(struct monst *mtmp, int dam, unsigned int die, const char *name)
196 {
197 if (mtmp != u.ustuck)
198 return;
199 kludge("%s digests you!", name);
200 u.uhp -= dam;
201 if (u.uswldtim++ >= die) { /* a3 */
202 pline("It totally digests you!");
203 u.uhp = -1;
204 }
205 if (u.uhp < 1)
206 done_in_by(mtmp);
207 #if 0
208 flags.botlx = 1; /* should we show status line ? */
209 #endif
210 }
211
212 static int
dochugw(struct monst * mtmp)213 dochugw(struct monst *mtmp)
214 {
215 int x = mtmp->mx;
216 int y = mtmp->my;
217 int dead = dochug(mtmp);
218 int dd;
219
220 if (!dead) /* monster still alive */
221 if (Warning)
222 if (!mtmp->mpeaceful)
223 if (mtmp->data->mlevel > warnlevel)
224 if ((dd = dist(mtmp->mx, mtmp->my)) < dist(x, y))
225 if (dd < 100)
226 if (!canseemon(mtmp))
227 warnlevel = mtmp->data->mlevel;
228 return (dead);
229 }
230
231 /* returns 1 if monster died moving, 0 otherwise */
232 int
dochug(struct monst * mtmp)233 dochug(struct monst *mtmp)
234 {
235 const struct permonst *mdat;
236 int tmp = 0, nearby, scared;
237
238 if (mtmp->cham && !rn2(6))
239 (void) newcham(mtmp, &mons[dlevel + 14 + rn2(CMNUM - 14 - dlevel)]);
240 mdat = mtmp->data;
241 if (mdat->mlevel < 0)
242 panic("bad monster %c (%d)", mdat->mlet, mdat->mlevel);
243
244 /* regenerate monsters */
245 if ((!(moves % 20) || strchr(MREGEN, mdat->mlet)) &&
246 mtmp->mhp < mtmp->mhpmax)
247 mtmp->mhp++;
248
249 if (mtmp->mfroz)
250 return (0); /* frozen monsters don't do anything */
251
252 if (mtmp->msleep) {
253 /* wake up, or get out of here. */
254 /* ettins are hard to surprise */
255 /* Nymphs and Leprechauns do not easily wake up */
256 if (cansee(mtmp->mx, mtmp->my) &&
257 (!Stealth || (mdat->mlet == 'e' && rn2(10))) &&
258 (!strchr("NL", mdat->mlet) || !rn2(50)) &&
259 (Aggravate_monster || strchr("d1", mdat->mlet)
260 || (!rn2(7) && !mtmp->mimic)))
261 mtmp->msleep = 0;
262 else
263 return (0);
264 }
265 /* not frozen or sleeping: wipe out texts written in the dust */
266 wipe_engr_at(mtmp->mx, mtmp->my, 1);
267
268 /* confused monsters get unconfused with small probability */
269 if (mtmp->mconf && !rn2(50))
270 mtmp->mconf = 0;
271
272 /* some monsters teleport */
273 if (mtmp->mflee && strchr("tNL", mdat->mlet) && !rn2(40)) {
274 rloc(mtmp);
275 return (0);
276 }
277 if (mdat->mmove < rnd(6))
278 return (0);
279
280 /* fleeing monsters might regain courage */
281 if (mtmp->mflee && !mtmp->mfleetim
282 && mtmp->mhp == mtmp->mhpmax && !rn2(25))
283 mtmp->mflee = 0;
284
285 nearby = (dist(mtmp->mx, mtmp->my) < 3);
286 scared = (nearby && (sengr_at("Elbereth", u.ux, u.uy) ||
287 sobj_at(SCR_SCARE_MONSTER, u.ux, u.uy)));
288 if (scared && !mtmp->mflee) {
289 mtmp->mflee = 1;
290 mtmp->mfleetim = (rn2(7) ? rnd(10) : rnd(100));
291 }
292 if (!nearby ||
293 mtmp->mflee ||
294 mtmp->mconf ||
295 (mtmp->minvis && !rn2(3)) ||
296 (strchr("BIuy", mdat->mlet) && !rn2(4)) ||
297 (mdat->mlet == 'L' && !u.ugold && (mtmp->mgold || rn2(2))) ||
298 (!mtmp->mcansee && !rn2(4)) ||
299 mtmp->mpeaceful
300 ) {
301 tmp = m_move(mtmp, 0); /* 2: monster died moving */
302 if (tmp == 2 || (tmp && mdat->mmove <= 12))
303 return (tmp == 2);
304 }
305 if (!strchr("Ea", mdat->mlet) && nearby &&
306 !mtmp->mpeaceful && u.uhp > 0 && !scared) {
307 if (mhitu(mtmp))
308 return (1); /* monster died (e.g. 'y' or 'F') */
309 }
310 /* extra movement for fast monsters */
311 if (mdat->mmove - 12 > rnd(12))
312 tmp = m_move(mtmp, 1);
313 return (tmp == 2);
314 }
315
316 int
m_move(struct monst * mtmp,int after)317 m_move(struct monst *mtmp, int after)
318 {
319 struct monst *mtmp2;
320 int nx, ny, omx, omy, appr, nearer, cnt, i, j;
321 xchar gx, gy, nix, niy, chcnt;
322 schar chi;
323 boolean likegold = 0, likegems = 0, likeobjs = 0;
324 char msym = mtmp->data->mlet;
325 schar mmoved = 0; /* not strictly nec.: chi >= 0 will
326 * do */
327 coord poss[9];
328 int info[9];
329
330 if (mtmp->mfroz || mtmp->msleep)
331 return (0);
332 if (mtmp->mtrapped) {
333 i = mintrap(mtmp);
334 if (i == 2)
335 return (2); /* he died */
336 if (i == 1)
337 return (0); /* still in trap, so didnt move */
338 }
339 if (mtmp->mhide && o_at(mtmp->mx, mtmp->my) && rn2(10))
340 return (0); /* do not leave hiding place */
341
342 #ifndef NOWORM
343 if (mtmp->wormno)
344 goto not_special;
345 #endif /* NOWORM */
346
347 /* my dog gets a special treatment */
348 if (mtmp->mtame) {
349 return (dog_move(mtmp, after));
350 }
351 /* likewise for shopkeeper */
352 if (mtmp->isshk) {
353 mmoved = shk_move(mtmp);
354 if (mmoved >= 0)
355 goto postmov;
356 mmoved = 0; /* follow player outside shop */
357 }
358 /* and for the guard */
359 if (mtmp->isgd) {
360 mmoved = gd_move();
361 goto postmov;
362 }
363 /*
364 * teleport if that lies in our nature ('t') or when badly wounded
365 * ('1')
366 */
367 if ((msym == 't' && !rn2(5))
368 || (msym == '1' && (mtmp->mhp < 7 || (!xdnstair && !rn2(5))
369 || levl[u.ux][u.uy].typ == STAIRS))) {
370 if (mtmp->mhp < 7 || (msym == 't' && rn2(2)))
371 rloc(mtmp);
372 else
373 mnexto(mtmp);
374 mmoved = 1;
375 goto postmov;
376 }
377 /* spit fire ('D') or use a wand ('1') when appropriate */
378 if (strchr("D1", msym))
379 inrange(mtmp);
380
381 if (msym == 'U' && !mtmp->mcan && canseemon(mtmp) &&
382 mtmp->mcansee && rn2(5)) {
383 if (!Confusion)
384 pline("%s's gaze has confused you!", Monnam(mtmp));
385 else
386 pline("You are getting more and more confused.");
387 if (rn2(3))
388 mtmp->mcan = 1;
389 Confusion += d(3, 4); /* timeout */
390 }
391 not_special:
392 if (!mtmp->mflee && u.uswallow && u.ustuck != mtmp)
393 return (1);
394 appr = 1;
395 if (mtmp->mflee)
396 appr = -1;
397 if (mtmp->mconf || Invis || !mtmp->mcansee ||
398 (strchr("BIy", msym) && !rn2(3)))
399 appr = 0;
400 omx = mtmp->mx;
401 omy = mtmp->my;
402 gx = u.ux;
403 gy = u.uy;
404 if (msym == 'L' && appr == 1 && mtmp->mgold > u.ugold)
405 appr = -1;
406
407 /*
408 * random criterion for 'smell' or track finding ability should use
409 * mtmp->msmell or sth
410 */
411 if (msym == '@' ||
412 ('a' <= msym && msym <= 'z')) {
413 coord *cp;
414 schar mroom;
415 mroom = inroom(omx, omy);
416 if (mroom < 0 || mroom != inroom(u.ux, u.uy)) {
417 cp = gettrack(omx, omy);
418 if (cp) {
419 gx = cp->x;
420 gy = cp->y;
421 }
422 }
423 }
424 /* look for gold or jewels nearby */
425 likegold = (strchr("LOD", msym) != NULL);
426 likegems = (strchr("ODu", msym) != NULL);
427 likeobjs = mtmp->mhide;
428 #define SRCHRADIUS 25
429 {
430 xchar mind = SRCHRADIUS; /* not too far away */
431 int dd;
432 if (likegold) {
433 struct gold *gold;
434 for (gold = fgold; gold; gold = gold->ngold)
435 if ((dd = DIST(omx, omy, gold->gx, gold->gy)) < mind) {
436 mind = dd;
437 gx = gold->gx;
438 gy = gold->gy;
439 }
440 }
441 if (likegems || likeobjs) {
442 struct obj *otmp;
443 for (otmp = fobj; otmp; otmp = otmp->nobj)
444 if (likeobjs || otmp->olet == GEM_SYM)
445 if (msym != 'u' ||
446 objects[otmp->otyp].g_val != 0)
447 if ((dd = DIST(omx, omy, otmp->ox, otmp->oy)) < mind) {
448 mind = dd;
449 gx = otmp->ox;
450 gy = otmp->oy;
451 }
452 }
453 if (mind < SRCHRADIUS && appr == -1) {
454 if (dist(omx, omy) < 10) {
455 gx = u.ux;
456 gy = u.uy;
457 } else
458 appr = 1;
459 }
460 }
461 nix = omx;
462 niy = omy;
463 cnt = mfndpos(mtmp, poss, info,
464 msym == 'u' ? NOTONL :
465 (msym == '@' || msym == '1') ? (ALLOW_SSM | ALLOW_TRAPS) :
466 strchr(UNDEAD, msym) ? NOGARLIC : ALLOW_TRAPS);
467 /* ALLOW_ROCK for some monsters ? */
468 chcnt = 0;
469 chi = -1;
470 for (i = 0; i < cnt; i++) {
471 nx = poss[i].x;
472 ny = poss[i].y;
473 for (j = 0; j < MTSZ && j < cnt - 1; j++)
474 if (nx == mtmp->mtrack[j].x && ny == mtmp->mtrack[j].y)
475 if (rn2(4 * (cnt - j)))
476 goto nxti;
477 #ifdef STUPID
478 /* some stupid compilers think that this is too complicated */
479 {
480 int d1 = DIST(nx, ny, gx, gy);
481 int d2 = DIST(nix, niy, gx, gy);
482 nearer = (d1 < d2);
483 }
484 #else
485 nearer = (DIST(nx, ny, gx, gy) < DIST(nix, niy, gx, gy));
486 #endif /* STUPID */
487 if ((appr == 1 && nearer) || (appr == -1 && !nearer) ||
488 !mmoved ||
489 (!appr && !rn2(++chcnt))) {
490 nix = nx;
491 niy = ny;
492 chi = i;
493 mmoved = 1;
494 }
495 nxti: ;
496 }
497 if (mmoved) {
498 if (info[chi] & ALLOW_M) {
499 mtmp2 = m_at(nix, niy);
500 if (mtmp2 == NULL)
501 panic("error in m_move");
502 if (hitmm(mtmp, mtmp2) == 1 && rn2(4) &&
503 hitmm(mtmp2, mtmp) == 2)
504 return (2);
505 return (0);
506 }
507 if (info[chi] & ALLOW_U) {
508 (void) hitu(mtmp, d(mtmp->data->damn, mtmp->data->damd) + 1);
509 return (0);
510 }
511 mtmp->mx = nix;
512 mtmp->my = niy;
513 for (j = MTSZ - 1; j > 0; j--)
514 mtmp->mtrack[j] = mtmp->mtrack[j - 1];
515 mtmp->mtrack[0].x = omx;
516 mtmp->mtrack[0].y = omy;
517 #ifndef NOWORM
518 if (mtmp->wormno)
519 worm_move(mtmp);
520 #endif /* NOWORM */
521 } else {
522 if (msym == 'u' && rn2(2)) {
523 rloc(mtmp);
524 return (0);
525 }
526 #ifndef NOWORM
527 if (mtmp->wormno)
528 worm_nomove(mtmp);
529 #endif /* NOWORM */
530 }
531 postmov:
532 if (mmoved == 1) {
533 if (mintrap(mtmp) == 2) /* he died */
534 return (2);
535 if (likegold)
536 mpickgold(mtmp);
537 if (likegems)
538 mpickgems(mtmp);
539 if (mtmp->mhide)
540 mtmp->mundetected = 1;
541 }
542 pmon(mtmp);
543 return (mmoved);
544 }
545
546 static void
mpickgold(struct monst * mtmp)547 mpickgold(struct monst *mtmp)
548 {
549 struct gold *gold;
550 while ((gold = g_at(mtmp->mx, mtmp->my)) != NULL) {
551 mtmp->mgold += gold->amount;
552 freegold(gold);
553 if (levl[mtmp->mx][mtmp->my].scrsym == '$')
554 newsym(mtmp->mx, mtmp->my);
555 }
556 }
557
558 static void
mpickgems(struct monst * mtmp)559 mpickgems(struct monst *mtmp)
560 {
561 struct obj *otmp;
562 for (otmp = fobj; otmp; otmp = otmp->nobj)
563 if (otmp->olet == GEM_SYM)
564 if (otmp->ox == mtmp->mx && otmp->oy == mtmp->my)
565 if (mtmp->data->mlet != 'u' || objects[otmp->otyp].g_val != 0) {
566 freeobj(otmp);
567 mpickobj(mtmp, otmp);
568 if (levl[mtmp->mx][mtmp->my].scrsym == GEM_SYM)
569 newsym(mtmp->mx, mtmp->my); /* %% */
570 return; /* pick only one object */
571 }
572 }
573
574 /* return number of acceptable neighbour positions */
575 int
mfndpos(struct monst * mon,coord poss[9],int info[9],int flag)576 mfndpos(struct monst *mon, coord poss[9], int info[9], int flag)
577 {
578 int x, y, nx, ny, cnt = 0, ntyp;
579 struct monst *mtmp;
580 int nowtyp;
581 boolean pool;
582
583 x = mon->mx;
584 y = mon->my;
585 nowtyp = levl[x][y].typ;
586
587 pool = (mon->data->mlet == ';');
588 nexttry: /* eels prefer the water, but if there is no
589 * water nearby, they will crawl over land */
590 if (mon->mconf) {
591 flag |= ALLOW_ALL;
592 flag &= ~NOTONL;
593 }
594 for (nx = x - 1; nx <= x + 1; nx++)
595 for (ny = y - 1; ny <= y + 1; ny++)
596 if (nx != x || ny != y)
597 if (isok(nx, ny))
598 if (!IS_ROCK(ntyp = levl[nx][ny].typ))
599 if (!(nx != x && ny != y && (nowtyp == DOOR || ntyp == DOOR)))
600 if ((ntyp == POOL) == pool) {
601 info[cnt] = 0;
602 if (nx == u.ux && ny == u.uy) {
603 if (!(flag & ALLOW_U))
604 continue;
605 info[cnt] = ALLOW_U;
606 } else if ((mtmp = m_at(nx, ny)) != NULL) {
607 if (!(flag & ALLOW_M))
608 continue;
609 info[cnt] = ALLOW_M;
610 if (mtmp->mtame) {
611 if (!(flag & ALLOW_TM))
612 continue;
613 info[cnt] |= ALLOW_TM;
614 }
615 }
616 if (sobj_at(CLOVE_OF_GARLIC, nx, ny)) {
617 if (flag & NOGARLIC)
618 continue;
619 info[cnt] |= NOGARLIC;
620 }
621 if (sobj_at(SCR_SCARE_MONSTER, nx, ny) ||
622 (!mon->mpeaceful && sengr_at("Elbereth", nx, ny))) {
623 if (!(flag & ALLOW_SSM))
624 continue;
625 info[cnt] |= ALLOW_SSM;
626 }
627 if (sobj_at(ENORMOUS_ROCK, nx, ny)) {
628 if (!(flag & ALLOW_ROCK))
629 continue;
630 info[cnt] |= ALLOW_ROCK;
631 }
632 if (!Invis && online(nx, ny)) {
633 if (flag & NOTONL)
634 continue;
635 info[cnt] |= NOTONL;
636 }
637 /*
638 * we cannot
639 * avoid
640 * traps of
641 * an unknown
642 * kind
643 */
644 {
645 struct trap *ttmp = t_at(nx, ny);
646 int tt;
647 if (ttmp) {
648 tt = 1 << ttmp->ttyp;
649 if (mon->mtrapseen & tt) {
650 if (!(flag & tt))
651 continue;
652 info[cnt] |= tt;
653 }
654 }
655 }
656 poss[cnt].x = nx;
657 poss[cnt].y = ny;
658 cnt++;
659 }
660 if (!cnt && pool && nowtyp != POOL) {
661 pool = FALSE;
662 goto nexttry;
663 }
664 return (cnt);
665 }
666
667 int
dist(int x,int y)668 dist(int x, int y)
669 {
670 return ((x - u.ux) * (x - u.ux) + (y - u.uy) * (y - u.uy));
671 }
672
673 void
poisoned(const char * string,const char * pname)674 poisoned(const char *string, const char *pname)
675 {
676 int i;
677
678 if (Blind)
679 pline("It was poisoned.");
680 else
681 pline("The %s was poisoned!", string);
682 if (Poison_resistance) {
683 pline("The poison doesn't seem to affect you.");
684 return;
685 }
686 i = rn2(10);
687 if (i == 0) {
688 u.uhp = -1;
689 pline("I am afraid the poison was deadly ...");
690 } else if (i <= 5) {
691 losestr(rn1(3, 3));
692 } else {
693 losehp(rn1(10, 6), pname);
694 }
695 if (u.uhp < 1) {
696 killer = pname;
697 done("died");
698 }
699 }
700
701 void
mondead(struct monst * mtmp)702 mondead(struct monst *mtmp)
703 {
704 relobj(mtmp, 1);
705 unpmon(mtmp);
706 relmon(mtmp);
707 unstuck(mtmp);
708 if (mtmp->isshk)
709 shkdead(mtmp);
710 if (mtmp->isgd)
711 gddead();
712 #ifndef NOWORM
713 if (mtmp->wormno)
714 wormdead(mtmp);
715 #endif /* NOWORM */
716 monfree(mtmp);
717 }
718
719 /* called when monster is moved to larger structure */
720 void
replmon(struct monst * mtmp,struct monst * mtmp2)721 replmon(struct monst *mtmp, struct monst *mtmp2)
722 {
723 relmon(mtmp);
724 monfree(mtmp);
725 mtmp2->nmon = fmon;
726 fmon = mtmp2;
727 if (u.ustuck == mtmp)
728 u.ustuck = mtmp2;
729 if (mtmp2->isshk)
730 replshk(mtmp, mtmp2);
731 if (mtmp2->isgd)
732 replgd(mtmp, mtmp2);
733 }
734
735 void
relmon(struct monst * mon)736 relmon(struct monst *mon)
737 {
738 struct monst *mtmp;
739
740 if (mon == fmon)
741 fmon = fmon->nmon;
742 else {
743 for (mtmp = fmon; mtmp->nmon != mon; mtmp = mtmp->nmon);
744 mtmp->nmon = mon->nmon;
745 }
746 }
747
748 /*
749 * we do not free monsters immediately, in order to have their name available
750 * shortly after their demise
751 */
752 static struct monst *fdmon; /* chain of dead monsters, need not to be
753 * saved */
754
755 void
monfree(struct monst * mtmp)756 monfree(struct monst *mtmp)
757 {
758 mtmp->nmon = fdmon;
759 fdmon = mtmp;
760 }
761
762 static void
dmonsfree(void)763 dmonsfree(void)
764 {
765 struct monst *mtmp;
766 while ((mtmp = fdmon) != NULL) {
767 fdmon = mtmp->nmon;
768 free(mtmp);
769 }
770 }
771
772 void
unstuck(struct monst * mtmp)773 unstuck(struct monst *mtmp)
774 {
775 if (u.ustuck == mtmp) {
776 if (u.uswallow) {
777 u.ux = mtmp->mx;
778 u.uy = mtmp->my;
779 u.uswallow = 0;
780 setsee();
781 docrt();
782 }
783 u.ustuck = 0;
784 }
785 }
786
787 void
killed(struct monst * mtmp)788 killed(struct monst *mtmp)
789 {
790 #ifdef lint
791 #define NEW_SCORING
792 #endif /* lint */
793 int tmp, nk, x, y;
794 const struct permonst *mdat;
795
796 if (mtmp->cham)
797 mtmp->data = PM_CHAMELEON;
798 mdat = mtmp->data;
799 if (Blind)
800 pline("You destroy it!");
801 else {
802 pline("You destroy %s!",
803 mtmp->mtame ? amonnam(mtmp, "poor") : monnam(mtmp));
804 }
805 if (u.umconf) {
806 if (!Blind)
807 pline("Your hands stop glowing blue.");
808 u.umconf = 0;
809 }
810 /* count killed monsters */
811 #define MAXMONNO 100
812 nk = 1; /* in case we cannot find it in mons */
813 tmp = mdat - mons; /* strchr in mons array (if not 'd', '@', ...) */
814 if (tmp >= 0 && tmp < CMNUM + 2) {
815 u.nr_killed[tmp]++;
816 if ((nk = u.nr_killed[tmp]) > MAXMONNO &&
817 !strchr(fut_geno, mdat->mlet))
818 charcat(fut_geno, mdat->mlet);
819 }
820 /* punish bad behaviour */
821 if (mdat->mlet == '@')
822 Telepat = 0, u.uluck -= 2;
823 if (mtmp->mpeaceful || mtmp->mtame)
824 u.uluck--;
825 if (mdat->mlet == 'u')
826 u.uluck -= 5;
827 if ((int) u.uluck < LUCKMIN)
828 u.uluck = LUCKMIN;
829
830 /* give experience points */
831 tmp = 1 + mdat->mlevel * mdat->mlevel;
832 if (mdat->ac < 3)
833 tmp += 2 * (7 - mdat->ac);
834 if (strchr("AcsSDXaeRTVWU&In:P", mdat->mlet))
835 tmp += 2 * mdat->mlevel;
836 if (strchr("DeV&P", mdat->mlet))
837 tmp += (7 * mdat->mlevel);
838 if (mdat->mlevel > 6)
839 tmp += 50;
840 if (mdat->mlet == ';')
841 tmp += 1000;
842
843 #ifdef NEW_SCORING
844 /*
845 * ------- recent addition: make nr of points decrease when this is
846 * not the first of this kind
847 */
848 {
849 int ul = u.ulevel;
850 int ml = mdat->mlevel;
851 int tmp2;
852
853 if (ul < 14) /* points are given based on present and
854 * future level */
855 for (tmp2 = 0; !tmp2 || ul + tmp2 <= ml; tmp2++)
856 if (u.uexp + 1 + (tmp + ((tmp2 <= 0) ? 0 : 4 << (tmp2 - 1))) / nk
857 >= 10 * pow((unsigned) (ul - 1)))
858 if (++ul == 14)
859 break;
860
861 tmp2 = ml - ul - 1;
862 tmp = (tmp + ((tmp2 < 0) ? 0 : 4 << tmp2)) / nk;
863 if (!tmp)
864 tmp = 1;
865 }
866 /* note: ul is not necessarily the future value of u.ulevel */
867 /* ------- end of recent valuation change ------- */
868 #endif /* NEW_SCORING */
869
870 more_experienced(tmp, 0);
871 flags.botl = 1;
872 while (u.ulevel < 14 && u.uexp >= newuexp()) {
873 pline("Welcome to experience level %u.", ++u.ulevel);
874 tmp = rnd(10);
875 if (tmp < 3)
876 tmp = rnd(10);
877 u.uhpmax += tmp;
878 u.uhp += tmp;
879 flags.botl = 1;
880 }
881
882 /* dispose of monster and make cadaver */
883 x = mtmp->mx;
884 y = mtmp->my;
885 mondead(mtmp);
886 tmp = mdat->mlet;
887 if (tmp == 'm') { /* he killed a minotaur, give him a wand of
888 * digging */
889 /* note: the dead minotaur will be on top of it! */
890 mksobj_at(WAN_DIGGING, x, y);
891 /* if(cansee(x,y)) atl(x,y,fobj->olet); */
892 stackobj(fobj);
893 } else
894 #ifndef NOWORM
895 if (tmp == 'w') {
896 mksobj_at(WORM_TOOTH, x, y);
897 stackobj(fobj);
898 } else
899 #endif /* NOWORM */
900 if (!letter(tmp) || (!strchr("mw", tmp) && !rn2(3)))
901 tmp = 0;
902
903 if (ACCESSIBLE(levl[x][y].typ)) /* might be mimic in wall or dead eel */
904 if (x != u.ux || y != u.uy) /* might be here after
905 * swallowed */
906 if (strchr("NTVm&", mdat->mlet) || rn2(5)) {
907 struct obj *obj2 = mkobj_at(tmp, x, y);
908 if (cansee(x, y))
909 atl(x, y, obj2->olet);
910 stackobj(obj2);
911 }
912 }
913
914 void
kludge(const char * str,const char * arg)915 kludge(const char *str, const char *arg)
916 {
917 if (Blind) {
918 if (*str == '%')
919 pline(str, "It");
920 else
921 pline(str, "it");
922 } else
923 pline(str, arg);
924 }
925
926 void
rescham(void)927 rescham(void)
928 { /* force all chameleons to become normal */
929 struct monst *mtmp;
930
931 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
932 if (mtmp->cham) {
933 mtmp->cham = 0;
934 (void) newcham(mtmp, PM_CHAMELEON);
935 }
936 }
937
938 /* make a chameleon look like a new monster */
939 /* returns 1 if the monster actually changed */
940 int
newcham(struct monst * mtmp,const struct permonst * mdat)941 newcham(struct monst *mtmp, const struct permonst *mdat)
942 {
943 int mhp, hpn, hpd;
944
945 if (mdat == mtmp->data)
946 return (0); /* still the same monster */
947 #ifndef NOWORM
948 if (mtmp->wormno)
949 wormdead(mtmp); /* throw tail away */
950 #endif /* NOWORM */
951 if (u.ustuck == mtmp) {
952 if (u.uswallow) {
953 u.uswallow = 0;
954 u.uswldtim = 0;
955 mnexto(mtmp);
956 docrt();
957 prme();
958 }
959 u.ustuck = 0;
960 }
961 hpn = mtmp->mhp;
962 hpd = (mtmp->data->mlevel) * 8;
963 if (!hpd)
964 hpd = 4;
965 mtmp->data = mdat;
966 mhp = (mdat->mlevel) * 8;
967 /* new hp: same fraction of max as before */
968 mtmp->mhp = 2 + (hpn * mhp) / hpd;
969 hpn = mtmp->mhpmax;
970 mtmp->mhpmax = 2 + (hpn * mhp) / hpd;
971 mtmp->minvis = (mdat->mlet == 'I') ? 1 : 0;
972 #ifndef NOWORM
973 if (mdat->mlet == 'w' && getwn(mtmp))
974 initworm(mtmp);
975 /* perhaps we should clear mtmp->mtame here? */
976 #endif /* NOWORM */
977 unpmon(mtmp); /* necessary for 'I' and to force pmon */
978 pmon(mtmp);
979 return (1);
980 }
981
982 /* Make monster mtmp next to you (if possible) */
983 void
mnexto(struct monst * mtmp)984 mnexto(struct monst *mtmp)
985 {
986 coord mm;
987 mm = enexto(u.ux, u.uy);
988 mtmp->mx = mm.x;
989 mtmp->my = mm.y;
990 pmon(mtmp);
991 }
992
993 static int
ishuman(struct monst * mtmp)994 ishuman(struct monst *mtmp)
995 {
996 return (mtmp->data->mlet == '@');
997 }
998
999 void
setmangry(struct monst * mtmp)1000 setmangry(struct monst *mtmp)
1001 {
1002 if (!mtmp->mpeaceful)
1003 return;
1004 if (mtmp->mtame)
1005 return;
1006 mtmp->mpeaceful = 0;
1007 if (ishuman(mtmp))
1008 pline("%s gets angry!", Monnam(mtmp));
1009 }
1010
1011 /*
1012 * not one hundred procent correct: now a snake may hide under an invisible
1013 * object
1014 */
1015 int
canseemon(struct monst * mtmp)1016 canseemon(struct monst *mtmp)
1017 {
1018 return ((!mtmp->minvis || See_invisible)
1019 && (!mtmp->mhide || !o_at(mtmp->mx, mtmp->my))
1020 && cansee(mtmp->mx, mtmp->my));
1021 }
1022