1 /* $NetBSD: hack.read.c,v 1.11 2011/08/06 20:29:37 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.read.c,v 1.11 2011/08/06 20:29:37 dholland Exp $");
67 #endif /* not lint */
68
69 #include <stdlib.h>
70 #include "hack.h"
71 #include "extern.h"
72
73 static int identify(struct obj *);
74 static int monstersym(int);
75
76 int
doread(void)77 doread(void)
78 {
79 struct obj *scroll;
80 boolean confused = (Confusion != 0);
81 boolean known = FALSE;
82
83 scroll = getobj("?", "read");
84 if (!scroll)
85 return (0);
86 if (!scroll->dknown && Blind) {
87 pline("Being blind, you cannot read the formula on the scroll.");
88 return (0);
89 }
90 if (Blind)
91 pline("As you pronounce the formula on it, the scroll disappears.");
92 else
93 pline("As you read the scroll, it disappears.");
94 if (confused)
95 pline("Being confused, you mispronounce the magic words ... ");
96
97 switch (scroll->otyp) {
98 #ifdef MAIL
99 case SCR_MAIL:
100 readmail( /* scroll */ );
101 break;
102 #endif /* MAIL */
103 case SCR_ENCHANT_ARMOR:
104 {
105 struct obj *otmp = some_armor();
106 if (!otmp) {
107 strange_feeling(scroll, "Your skin glows then fades.");
108 return (1);
109 }
110 if (confused) {
111 pline("Your %s glows silver for a moment.",
112 objects[otmp->otyp].oc_name);
113 otmp->rustfree = 1;
114 break;
115 }
116 if (otmp->spe > 3 && rn2(otmp->spe)) {
117 pline("Your %s glows violently green for a while, then evaporates.",
118 objects[otmp->otyp].oc_name);
119 useup(otmp);
120 break;
121 }
122 pline("Your %s glows green for a moment.",
123 objects[otmp->otyp].oc_name);
124 otmp->cursed = 0;
125 otmp->spe++;
126 break;
127 }
128 case SCR_DESTROY_ARMOR:
129 if (confused) {
130 struct obj *otmp = some_armor();
131 if (!otmp) {
132 strange_feeling(scroll, "Your bones itch.");
133 return (1);
134 }
135 pline("Your %s glows purple for a moment.",
136 objects[otmp->otyp].oc_name);
137 otmp->rustfree = 0;
138 break;
139 }
140 if (uarm) {
141 pline("Your armor turns to dust and falls to the floor!");
142 useup(uarm);
143 } else if (uarmh) {
144 pline("Your helmet turns to dust and is blown away!");
145 useup(uarmh);
146 } else if (uarmg) {
147 pline("Your gloves vanish!");
148 useup(uarmg);
149 selftouch("You");
150 } else {
151 strange_feeling(scroll, "Your skin itches.");
152 return (1);
153 }
154 break;
155 case SCR_CONFUSE_MONSTER:
156 if (confused) {
157 pline("Your hands begin to glow purple.");
158 Confusion += rnd(100);
159 } else {
160 pline("Your hands begin to glow blue.");
161 u.umconf = 1;
162 }
163 break;
164 case SCR_SCARE_MONSTER:
165 {
166 int ct = 0;
167 struct monst *mtmp;
168
169 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
170 if (cansee(mtmp->mx, mtmp->my)) {
171 if (confused)
172 mtmp->mflee = mtmp->mfroz =
173 mtmp->msleep = 0;
174 else
175 mtmp->mflee = 1;
176 ct++;
177 }
178 if (!ct) {
179 if (confused)
180 pline("You hear sad wailing in the distance.");
181 else
182 pline("You hear maniacal laughter in the distance.");
183 }
184 break;
185 }
186 case SCR_BLANK_PAPER:
187 if (confused)
188 pline("You see strange patterns on this scroll.");
189 else
190 pline("This scroll seems to be blank.");
191 break;
192 case SCR_REMOVE_CURSE:
193 {
194 struct obj *obj;
195 if (confused)
196 pline("You feel like you need some help.");
197 else
198 pline("You feel like someone is helping you.");
199 for (obj = invent; obj; obj = obj->nobj)
200 if (obj->owornmask)
201 obj->cursed = confused;
202 if (Punished && !confused) {
203 Punished = 0;
204 freeobj(uchain);
205 unpobj(uchain);
206 free(uchain);
207 uball->spe = 0;
208 uball->owornmask &= ~W_BALL;
209 uchain = uball = (struct obj *) 0;
210 }
211 break;
212 }
213 case SCR_CREATE_MONSTER:
214 {
215 int cnt = 1;
216
217 if (!rn2(73))
218 cnt += rnd(4);
219 if (confused)
220 cnt += 12;
221 while (cnt--)
222 (void) makemon(confused ? PM_ACID_BLOB :
223 (struct permonst *) 0, u.ux, u.uy);
224 break;
225 }
226 case SCR_ENCHANT_WEAPON:
227 if (uwep && confused) {
228 pline("Your %s glows silver for a moment.",
229 objects[uwep->otyp].oc_name);
230 uwep->rustfree = 1;
231 } else if (!chwepon(scroll, 1)) /* tests for !uwep */
232 return (1);
233 break;
234 case SCR_DAMAGE_WEAPON:
235 if (uwep && confused) {
236 pline("Your %s glows purple for a moment.",
237 objects[uwep->otyp].oc_name);
238 uwep->rustfree = 0;
239 } else if (!chwepon(scroll, -1)) /* tests for !uwep */
240 return (1);
241 break;
242 case SCR_TAMING:
243 {
244 int i, j;
245 int bd = confused ? 5 : 1;
246 struct monst *mtmp;
247
248 for (i = -bd; i <= bd; i++)
249 for (j = -bd; j <= bd; j++)
250 if ((mtmp = m_at(u.ux + i, u.uy + j)) != NULL)
251 (void) tamedog(mtmp, (struct obj *) 0);
252 break;
253 }
254 case SCR_GENOCIDE:
255 {
256 char buf[BUFSZ];
257 struct monst *mtmp, *mtmp2;
258
259 pline("You have found a scroll of genocide!");
260 known = TRUE;
261 if (confused)
262 *buf = u.usym;
263 else
264 do {
265 pline("What monster do you want to genocide (Type the letter)? ");
266 getlin(buf);
267 } while (strlen(buf) != 1 || !monstersym(*buf));
268 if (!strchr(fut_geno, *buf))
269 charcat(fut_geno, *buf);
270 if (!strchr(genocided, *buf))
271 charcat(genocided, *buf);
272 else {
273 pline("Such monsters do not exist in this world.");
274 break;
275 }
276 for (mtmp = fmon; mtmp; mtmp = mtmp2) {
277 mtmp2 = mtmp->nmon;
278 if (mtmp->data->mlet == *buf)
279 mondead(mtmp);
280 }
281 pline("Wiped out all %c's.", *buf);
282 if (*buf == u.usym) {
283 killer = "scroll of genocide";
284 u.uhp = -1;
285 }
286 break;
287 }
288 case SCR_LIGHT:
289 if (!Blind)
290 known = TRUE;
291 litroom(!confused);
292 break;
293 case SCR_TELEPORTATION:
294 if (confused)
295 level_tele();
296 else {
297 #ifdef QUEST
298 int oux = u.ux, ouy = u.uy;
299 tele();
300 if (dist(oux, ouy) > 100)
301 known = TRUE;
302 #else /* QUEST */
303 int uroom = inroom(u.ux, u.uy);
304 tele();
305 if (uroom != inroom(u.ux, u.uy))
306 known = TRUE;
307 #endif /* QUEST */
308 }
309 break;
310 case SCR_GOLD_DETECTION:
311 /*
312 * Unfortunately this code has become slightly less elegant,
313 * now that gold and traps no longer are of the same type.
314 */
315 if (confused) {
316 struct trap *ttmp;
317
318 if (!ftrap) {
319 strange_feeling(scroll, "Your toes stop itching.");
320 return (1);
321 } else {
322 for (ttmp = ftrap; ttmp; ttmp = ttmp->ntrap)
323 if (ttmp->tx != u.ux || ttmp->ty != u.uy)
324 goto outtrapmap;
325 /*
326 * only under me - no separate display
327 * required
328 */
329 pline("Your toes itch!");
330 break;
331 outtrapmap:
332 cls();
333 for (ttmp = ftrap; ttmp; ttmp = ttmp->ntrap)
334 at(ttmp->tx, ttmp->ty, '$');
335 prme();
336 pline("You feel very greedy!");
337 }
338 } else {
339 struct gold *gtmp;
340
341 if (!fgold) {
342 strange_feeling(scroll, "You feel materially poor.");
343 return (1);
344 } else {
345 known = TRUE;
346 for (gtmp = fgold; gtmp; gtmp = gtmp->ngold)
347 if (gtmp->gx != u.ux || gtmp->gy != u.uy)
348 goto outgoldmap;
349 /*
350 * only under me - no separate display
351 * required
352 */
353 pline("You notice some gold between your feet.");
354 break;
355 outgoldmap:
356 cls();
357 for (gtmp = fgold; gtmp; gtmp = gtmp->ngold)
358 at(gtmp->gx, gtmp->gy, '$');
359 prme();
360 pline("You feel very greedy, and sense gold!");
361 }
362 }
363 /* common sequel */
364 more();
365 docrt();
366 break;
367 case SCR_FOOD_DETECTION:
368 {
369 int ct = 0, ctu = 0;
370 struct obj *obj;
371 char foodsym = confused ? POTION_SYM : FOOD_SYM;
372
373 for (obj = fobj; obj; obj = obj->nobj)
374 if (obj->olet == FOOD_SYM) {
375 if (obj->ox == u.ux && obj->oy == u.uy)
376 ctu++;
377 else
378 ct++;
379 }
380 if (!ct && !ctu) {
381 strange_feeling(scroll, "Your nose twitches.");
382 return (1);
383 } else if (!ct) {
384 known = TRUE;
385 pline("You smell %s close nearby.",
386 confused ? "something" : "food");
387
388 } else {
389 known = TRUE;
390 cls();
391 for (obj = fobj; obj; obj = obj->nobj)
392 if (obj->olet == foodsym)
393 at(obj->ox, obj->oy, FOOD_SYM);
394 prme();
395 pline("Your nose tingles and you smell %s!",
396 confused ? "something" : "food");
397 more();
398 docrt();
399 }
400 break;
401 }
402 case SCR_IDENTIFY:
403 /* known = TRUE; */
404 if (confused)
405 pline("You identify this as an identify scroll.");
406 else
407 pline("This is an identify scroll.");
408 useup(scroll);
409 objects[SCR_IDENTIFY].oc_name_known = 1;
410 if (!confused)
411 while (
412 !ggetobj("identify", identify, rn2(5) ? 1 : rn2(5))
413 && invent
414 );
415 return (1);
416 case SCR_MAGIC_MAPPING:
417 {
418 struct rm *lev;
419 int num, zx, zy;
420
421 known = TRUE;
422 pline("On this scroll %s a map!",
423 confused ? "was" : "is");
424 for (zy = 0; zy < ROWNO; zy++)
425 for (zx = 0; zx < COLNO; zx++) {
426 if (confused && rn2(7))
427 continue;
428 lev = &(levl[zx][zy]);
429 if ((num = lev->typ) == 0)
430 continue;
431 if (num == SCORR) {
432 lev->typ = CORR;
433 lev->scrsym = CORR_SYM;
434 } else if (num == SDOOR) {
435 lev->typ = DOOR;
436 lev->scrsym = '+';
437 /* do sth in doors ? */
438 } else if (lev->seen)
439 continue;
440 #ifndef QUEST
441 if (num != ROOM)
442 #endif /* QUEST */
443 {
444 lev->seen = lev->new = 1;
445 if (lev->scrsym == ' ' || !lev->scrsym)
446 newsym(zx, zy);
447 else
448 on_scr(zx, zy);
449 }
450 }
451 break;
452 }
453 case SCR_AMNESIA:
454 {
455 int zx, zy;
456
457 known = TRUE;
458 for (zx = 0; zx < COLNO; zx++)
459 for (zy = 0; zy < ROWNO; zy++)
460 if (!confused || rn2(7))
461 if (!cansee(zx, zy))
462 levl[zx][zy].seen = 0;
463 docrt();
464 pline("Thinking of Maud you forget everything else.");
465 break;
466 }
467 case SCR_FIRE:
468 {
469 int num = 0;
470 struct monst *mtmp;
471
472 known = TRUE;
473 if (confused) {
474 pline("The scroll catches fire and you burn your hands.");
475 losehp(1, "scroll of fire");
476 } else {
477 pline("The scroll erupts in a tower of flame!");
478 if (Fire_resistance)
479 pline("You are uninjured.");
480 else {
481 num = rnd(6);
482 u.uhpmax -= num;
483 losehp(num, "scroll of fire");
484 }
485 }
486 num = (2 * num + 1) / 3;
487 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) {
488 if (dist(mtmp->mx, mtmp->my) < 3) {
489 mtmp->mhp -= num;
490 if (strchr("FY", mtmp->data->mlet))
491 mtmp->mhp -= 3 * num; /* this might well kill
492 * 'F's */
493 if (mtmp->mhp < 1) {
494 killed(mtmp);
495 break; /* primitive */
496 }
497 }
498 }
499 break;
500 }
501 case SCR_PUNISHMENT:
502 known = TRUE;
503 if (confused) {
504 pline("You feel guilty.");
505 break;
506 }
507 pline("You are being punished for your misbehaviour!");
508 if (Punished) {
509 pline("Your iron ball gets heavier.");
510 uball->owt += 15;
511 break;
512 }
513 Punished = INTRINSIC;
514 setworn(mkobj_at(CHAIN_SYM, u.ux, u.uy), W_CHAIN);
515 setworn(mkobj_at(BALL_SYM, u.ux, u.uy), W_BALL);
516 uball->spe = 1; /* special ball (see save) */
517 break;
518 default:
519 impossible("What weird language is this written in? (%u)",
520 scroll->otyp);
521 }
522 if (!objects[scroll->otyp].oc_name_known) {
523 if (known && !confused) {
524 objects[scroll->otyp].oc_name_known = 1;
525 more_experienced(0, 10);
526 } else if (!objects[scroll->otyp].oc_uname)
527 docall(scroll);
528 }
529 useup(scroll);
530 return (1);
531 }
532
533 static int
identify(struct obj * otmp)534 identify(struct obj *otmp) /* also called by newmail() */
535 {
536 objects[otmp->otyp].oc_name_known = 1;
537 otmp->known = otmp->dknown = 1;
538 prinv(otmp);
539 return (1);
540 }
541
542 void
litroom(boolean on)543 litroom(boolean on)
544 {
545 #ifndef QUEST
546 int num, zx, zy;
547 #endif
548
549 /* first produce the text (provided he is not blind) */
550 if (Blind)
551 goto do_it;
552 if (!on) {
553 if (u.uswallow || !xdnstair || levl[u.ux][u.uy].typ == CORR ||
554 !levl[u.ux][u.uy].lit) {
555 pline("It seems even darker in here than before.");
556 return;
557 } else
558 pline("It suddenly becomes dark in here.");
559 } else {
560 if (u.uswallow) {
561 pline("%s's stomach is lit.", Monnam(u.ustuck));
562 return;
563 }
564 if (!xdnstair) {
565 pline("Nothing Happens.");
566 return;
567 }
568 #ifdef QUEST
569 pline("The cave lights up around you, then fades.");
570 return;
571 #else /* QUEST */
572 if (levl[u.ux][u.uy].typ == CORR) {
573 pline("The corridor lights up around you, then fades.");
574 return;
575 } else if (levl[u.ux][u.uy].lit) {
576 pline("The light here seems better now.");
577 return;
578 } else
579 pline("The room is lit.");
580 #endif /* QUEST */
581 }
582
583 do_it:
584 #ifdef QUEST
585 return;
586 #else /* QUEST */
587 if (levl[u.ux][u.uy].lit == on)
588 return;
589 if (levl[u.ux][u.uy].typ == DOOR) {
590 if (IS_ROOM(levl[u.ux][u.uy + 1].typ))
591 zy = u.uy + 1;
592 else if (IS_ROOM(levl[u.ux][u.uy - 1].typ))
593 zy = u.uy - 1;
594 else
595 zy = u.uy;
596 if (IS_ROOM(levl[u.ux + 1][u.uy].typ))
597 zx = u.ux + 1;
598 else if (IS_ROOM(levl[u.ux - 1][u.uy].typ))
599 zx = u.ux - 1;
600 else
601 zx = u.ux;
602 } else {
603 zx = u.ux;
604 zy = u.uy;
605 }
606 for (seelx = u.ux; (num = levl[seelx - 1][zy].typ) != CORR && num != 0;
607 seelx--);
608 for (seehx = u.ux; (num = levl[seehx + 1][zy].typ) != CORR && num != 0;
609 seehx++);
610 for (seely = u.uy; (num = levl[zx][seely - 1].typ) != CORR && num != 0;
611 seely--);
612 for (seehy = u.uy; (num = levl[zx][seehy + 1].typ) != CORR && num != 0;
613 seehy++);
614 for (zy = seely; zy <= seehy; zy++)
615 for (zx = seelx; zx <= seehx; zx++) {
616 levl[zx][zy].lit = on;
617 if (!Blind && dist(zx, zy) > 2) {
618 if (on)
619 prl(zx, zy);
620 else
621 nosee(zx, zy);
622 }
623 }
624 if (!on)
625 seehx = 0;
626 #endif /* QUEST */
627 }
628
629 /* Test whether we may genocide all monsters with symbol ch */
630 static int
monstersym(int ch)631 monstersym(int ch) /* arnold@ucsfcgl */
632 {
633 const struct permonst *mp;
634
635 /*
636 * can't genocide certain monsters
637 */
638 if (strchr("12 &:", ch))
639 return FALSE;
640
641 if (ch == pm_eel.mlet)
642 return TRUE;
643 for (mp = mons; mp < &mons[CMNUM + 2]; mp++)
644 if (mp->mlet == ch)
645 return TRUE;
646 return FALSE;
647 }
648