1 /* SCCS Id: @(#)rumors.c 3.4 1996/04/20 */
2 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
3 /* NetHack may be freely redistributed. See license for details. */
9 /* [note: this comment is fairly old, but still accurate for 3.1]
10 * Rumors have been entirely rewritten to speed up the access. This is
11 * essential when working from floppies. Using fseek() the way that's done
12 * here means rumors following longer rumors are output more often than those
13 * following shorter rumors. Also, you may see the same rumor more than once
14 * in a particular game (although the odds are highly against it), but
15 * this also happens with real fortune cookies. -dgk
19 * The rumors file consists of a "do not edit" line, a hexadecimal number
20 * giving the number of bytes of useful/true rumors, followed by those
21 * true rumors (one per line), followed by the useless/false/misleading/cute
22 * rumors (also one per line). Number of bytes of untrue rumors is derived
23 * via fseek(EOF)+ftell().
25 * The oracles file consists of a "do not edit" comment, a decimal count N
26 * and set of N+1 hexadecimal fseek offsets, followed by N multiple-line
27 * records, separated by "---" lines. The first oracle is a special case,
28 * and placed there by 'makedefs'.
31 STATIC_DCL void FDECL(init_rumors, (dlb *));
32 STATIC_DCL void FDECL(init_oracles, (dlb *));
34 static long true_rumor_start, true_rumor_size, true_rumor_end,
35 false_rumor_start, false_rumor_size, false_rumor_end;
36 static int oracle_flg = 0; /* -1=>don't use, 0=>need init, 1=>init done */
37 static unsigned oracle_cnt = 0;
38 static long *oracle_loc = 0;
46 (void) dlb_fgets(line, sizeof line, fp); /* skip "don't edit" comment */
47 (void) dlb_fgets(line, sizeof line, fp);
48 if (sscanf(line, "%6lx\n", &true_rumor_size) == 1 &&
49 true_rumor_size > 0L) {
50 (void) dlb_fseek(fp, 0L, SEEK_CUR);
51 true_rumor_start = dlb_ftell(fp);
52 true_rumor_end = true_rumor_start + true_rumor_size;
53 (void) dlb_fseek(fp, 0L, SEEK_END);
54 false_rumor_end = dlb_ftell(fp);
55 false_rumor_start = true_rumor_end; /* ok, so it's redundant... */
56 false_rumor_size = false_rumor_end - false_rumor_start;
58 true_rumor_size = -1L; /* init failed */
61 /* exclude_cookie is a hack used because we sometimes want to get rumors in a
62 * context where messages such as "You swallowed the fortune!" that refer to
63 * cookies should not appear. This has no effect for true rumors since none
64 * of them contain such references anyway.
67 getrumor(truth, rumor_buf, exclude_cookie)
68 int truth; /* 1=true, -1=false, 0=either */
70 boolean exclude_cookie;
73 long tidbit, beginning;
74 char *endp, line[BUFSZ], xbuf[BUFSZ];
77 if (true_rumor_size < 0L) /* we couldn't open RUMORFILE */
80 rumors = dlb_fopen(RUMORFILE, "r");
88 if (true_rumor_size == 0L) { /* if this is 1st outrumor() */
90 if (true_rumor_size < 0L) { /* init failed */
91 Sprintf(rumor_buf, "Error reading \"%.80s\".",
98 * rn2 \ +1 2=T 1=T 0=F
99 * adj./ +0 1=T 0=F -1=F
101 switch (adjtruth = truth + rn2(2)) {
102 case 2: /*(might let a bogus input arg sneak thru)*/
103 case 1: beginning = true_rumor_start;
104 tidbit = Rand() % true_rumor_size;
106 case 0: /* once here, 0 => false rather than "either"*/
107 case -1: beginning = false_rumor_start;
108 tidbit = Rand() % false_rumor_size;
111 impossible("strange truth value for rumor");
112 return strcpy(rumor_buf, "Oops...");
114 (void) dlb_fseek(rumors, beginning + tidbit, SEEK_SET);
115 (void) dlb_fgets(line, sizeof line, rumors);
116 if (!dlb_fgets(line, sizeof line, rumors) ||
117 (adjtruth > 0 && dlb_ftell(rumors) > true_rumor_end)) {
118 /* reached end of rumors -- go back to beginning */
119 (void) dlb_fseek(rumors, beginning, SEEK_SET);
120 (void) dlb_fgets(line, sizeof line, rumors);
122 if ((endp = index(line, '\n')) != 0) *endp = 0;
123 Strcat(rumor_buf, xcrypt(line, xbuf));
124 } while(count++ < 50 && exclude_cookie && (strstri(rumor_buf, "fortune") || strstri(rumor_buf, "pity")));
125 (void) dlb_fclose(rumors);
127 impossible("Can't find non-cookie rumor?");
129 exercise(A_WIS, (adjtruth > 0));
131 pline("Can't open rumors file!");
132 true_rumor_size = -1; /* don't try to open it again */
138 outrumor(truth, mechanism)
139 int truth; /* 1=true, -1=false, 0=either */
142 static const char fortune_msg[] =
143 "This cookie has a scrap of paper inside.";
146 boolean reading = (mechanism == BY_COOKIE ||
147 mechanism == BY_PAPER);
150 /* deal with various things that prevent reading */
151 if (is_fainted() && mechanism == BY_COOKIE)
154 if (mechanism == BY_COOKIE)
156 pline("What a pity that you cannot read it!");
160 line = getrumor(truth, buf, reading ? FALSE : TRUE);
162 line = "NetHack rumors file closed for renovation.";
165 /* Oracle delivers the rumor */
166 pline("True to her word, the Oracle %ssays: ",
167 (!rn2(4) ? "offhandedly " : (!rn2(3) ? "casually " :
168 (rn2(2) ? "nonchalantly " : ""))));
169 verbalize("%s", line);
170 exercise(A_WIS, TRUE);
190 /* this assumes we're only called once */
191 (void) dlb_fgets(line, sizeof line, fp); /* skip "don't edit" comment*/
192 (void) dlb_fgets(line, sizeof line, fp);
193 if (sscanf(line, "%5d\n", &cnt) == 1 && cnt > 0) {
194 oracle_cnt = (unsigned) cnt;
195 oracle_loc = (long *) alloc((unsigned)cnt * sizeof (long));
196 for (i = 0; i < cnt; i++) {
197 (void) dlb_fgets(line, sizeof line, fp);
198 (void) sscanf(line, "%5lx\n", &oracle_loc[i]);
205 save_oracles(fd, mode)
208 if (perform_bwrite(mode)) {
209 bwrite(fd, (genericptr_t) &oracle_cnt, sizeof oracle_cnt);
211 bwrite(fd, (genericptr_t)oracle_loc, oracle_cnt*sizeof (long));
213 if (release_data(mode)) {
215 free((genericptr_t)oracle_loc);
216 oracle_loc = 0, oracle_cnt = 0, oracle_flg = 0;
225 mread(fd, (genericptr_t) &oracle_cnt, sizeof oracle_cnt);
227 oracle_loc = (long *) alloc(oracle_cnt * sizeof (long));
228 mread(fd, (genericptr_t) oracle_loc, oracle_cnt * sizeof (long));
229 oracle_flg = 1; /* no need to call init_oracles() */
234 outoracle(special, delphi)
244 if(oracle_flg < 0 || /* couldn't open ORACLEFILE */
245 (oracle_flg > 0 && oracle_cnt == 0)) /* oracles already exhausted */
248 oracles = dlb_fopen(ORACLEFILE, "r");
252 if (oracle_flg == 0) { /* if this is the first outoracle() */
253 init_oracles(oracles);
255 if (oracle_cnt == 0) return;
257 /* oracle_loc[0] is the special oracle; */
258 /* oracle_loc[1..oracle_cnt-1] are normal ones */
259 if (oracle_cnt <= 1 && !special) return; /*(shouldn't happen)*/
260 oracle_idx = special ? 0 : rnd((int) oracle_cnt - 1);
261 (void) dlb_fseek(oracles, oracle_loc[oracle_idx], SEEK_SET);
262 if (!special) oracle_loc[oracle_idx] = oracle_loc[--oracle_cnt];
264 tmpwin = create_nhwindow(NHW_TEXT);
266 putstr(tmpwin, 0, special ?
267 "The Oracle scornfully takes all your money and says:" :
268 "The Oracle meditates for a moment and then intones:");
270 putstr(tmpwin, 0, "The message reads:");
271 putstr(tmpwin, 0, "");
273 while(dlb_fgets(line, COLNO, oracles) && strcmp(line,"---\n")) {
274 if ((endp = index(line, '\n')) != 0) *endp = 0;
275 putstr(tmpwin, 0, xcrypt(line, xbuf));
277 display_nhwindow(tmpwin, TRUE);
278 destroy_nhwindow(tmpwin);
279 (void) dlb_fclose(oracles);
281 pline("Can't open oracles file!");
282 oracle_flg = -1; /* don't try to open it again */
288 register struct monst *oracl;
291 long umoney = money_cnt(invent);
293 int u_pay, minor_cost = 50, major_cost = 500 + 50 * u.ulevel;
300 There("is no one here to consult.");
302 } else if (!oracl->mpeaceful) {
303 pline("%s is in no mood for consultations.", Monnam(oracl));
306 } else if (!u.ugold) {
308 } else if (!umoney) {
310 You("have no money.");
315 "\"Wilt thou settle for a minor consultation?\" (%d %s)",
316 minor_cost, currency((long)minor_cost));
323 if (u.ugold < (long)minor_cost) {
325 if (umoney < (long)minor_cost) {
327 You("don't even have enough money for that!");
334 if (u.ugold <= (long)minor_cost || /* don't even ask */
336 if (umoney <= (long)minor_cost || /* don't even ask */
338 (oracle_cnt == 1 || oracle_flg < 0)) return 0;
340 "\"Then dost thou desire a major one?\" (%d %s)",
341 major_cost, currency((long)major_cost));
342 if (yn(qbuf) != 'y') return 0;
344 u_pay = (u.ugold < (long)major_cost ? (int)u.ugold
347 u_pay = (umoney < (long)major_cost ? (int)umoney
353 u.ugold -= (long)u_pay;
354 oracl->mgold += (long)u_pay;
356 money2mon(oracl, (long)u_pay);
359 add_xpts = 0; /* first oracle of each type gives experience points */
360 if (u_pay == minor_cost) {
361 outrumor(1, BY_ORACLE);
362 if (!u.uevent.minor_oracle)
363 add_xpts = u_pay / (u.uevent.major_oracle ? 25 : 10);
364 /* 5 pts if very 1st, or 2 pts if major already done */
365 u.uevent.minor_oracle = TRUE;
367 boolean cheapskate = u_pay < major_cost;
368 outoracle(cheapskate, TRUE);
369 if (!cheapskate && !u.uevent.major_oracle)
370 add_xpts = u_pay / (u.uevent.minor_oracle ? 25 : 10);
371 /* ~100 pts if very 1st, ~40 pts if minor already done */
372 u.uevent.major_oracle = TRUE;
373 exercise(A_WIS, !cheapskate);
376 more_experienced(add_xpts, u_pay/50);