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jwalz
377
src/rumors.c
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377
src/rumors.c
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/* SCCS Id: @(#)rumors.c 3.3 96/04/20 */
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/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
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/* NetHack may be freely redistributed. See license for details. */
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#include "hack.h"
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#include "lev.h"
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#include "dlb.h"
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/* [note: this comment is fairly old, but still accurate for 3.1]
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* Rumors have been entirely rewritten to speed up the access. This is
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* essential when working from floppies. Using fseek() the way that's done
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* here means rumors following longer rumors are output more often than those
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* following shorter rumors. Also, you may see the same rumor more than once
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* in a particular game (although the odds are highly against it), but
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* this also happens with real fortune cookies. -dgk
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*/
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/* 3.1
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* The rumors file consists of a "do not edit" line, a hexadecimal number
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* giving the number of bytes of useful/true rumors, followed by those
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* true rumors (one per line), followed by the useless/false/misleading/cute
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* rumors (also one per line). Number of bytes of untrue rumors is derived
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* via fseek(EOF)+ftell().
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*
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* The oracles file consists of a "do not edit" comment, a decimal count N
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* and set of N+1 hexadecimal fseek offsets, followed by N multiple-line
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* records, separated by "---" lines. The first oracle is a special case,
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* and placed there by 'makedefs'.
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*/
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STATIC_DCL void FDECL(init_rumors, (dlb *));
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STATIC_DCL void FDECL(init_oracles, (dlb *));
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static long true_rumor_start, true_rumor_size, true_rumor_end,
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false_rumor_start, false_rumor_size, false_rumor_end;
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static int oracle_flg = 0; /* -1=>don't use, 0=>need init, 1=>init done */
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static unsigned oracle_cnt = 0;
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static long *oracle_loc = 0;
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STATIC_OVL void
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init_rumors(fp)
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dlb *fp;
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{
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char line[BUFSZ];
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(void) dlb_fgets(line, sizeof line, fp); /* skip "don't edit" comment */
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(void) dlb_fgets(line, sizeof line, fp);
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if (sscanf(line, "%6lx\n", &true_rumor_size) == 1 &&
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true_rumor_size > 0L) {
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(void) dlb_fseek(fp, 0L, SEEK_CUR);
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true_rumor_start = dlb_ftell(fp);
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true_rumor_end = true_rumor_start + true_rumor_size;
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(void) dlb_fseek(fp, 0L, SEEK_END);
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false_rumor_end = dlb_ftell(fp);
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false_rumor_start = true_rumor_end; /* ok, so it's redundant... */
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false_rumor_size = false_rumor_end - false_rumor_start;
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} else
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true_rumor_size = -1L; /* init failed */
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}
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/* exclude_cookie is a hack used because we sometimes want to get rumors in a
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* context where messages such as "You swallowed the fortune!" that refer to
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* cookies should not appear. This has no effect for true rumors since none
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* of them contain such references anyway.
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*/
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char *
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getrumor(truth, rumor_buf, exclude_cookie)
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int truth; /* 1=true, -1=false, 0=either */
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char *rumor_buf;
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boolean exclude_cookie;
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{
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dlb *rumors;
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long tidbit, beginning;
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char *endp, line[BUFSZ], xbuf[BUFSZ];
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rumor_buf[0] = '\0';
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if (true_rumor_size < 0L) /* we couldn't open RUMORFILE */
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return rumor_buf;
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rumors = dlb_fopen(RUMORFILE, "r");
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if (rumors) {
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int count = 0;
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int adjtruth;
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do {
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rumor_buf[0] = '\0';
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if (true_rumor_size == 0L) { /* if this is 1st outrumor() */
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init_rumors(rumors);
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if (true_rumor_size < 0L) { /* init failed */
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Sprintf(rumor_buf, "Error reading \"%.80s\".",
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RUMORFILE);
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return rumor_buf;
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}
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}
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/*
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* input: 1 0 -1
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* rn2 \ +1 2=T 1=T 0=F
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* adj./ +0 1=T 0=F -1=F
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*/
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switch (adjtruth = truth + rn2(2)) {
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case 2: /*(might let a bogus input arg sneak thru)*/
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case 1: beginning = true_rumor_start;
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tidbit = Rand() % true_rumor_size;
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break;
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case 0: /* once here, 0 => false rather than "either"*/
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case -1: beginning = false_rumor_start;
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tidbit = Rand() % false_rumor_size;
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break;
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default:
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impossible("strange truth value for rumor");
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return strcpy(rumor_buf, "Oops...");
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}
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(void) dlb_fseek(rumors, beginning + tidbit, SEEK_SET);
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(void) dlb_fgets(line, sizeof line, rumors);
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if (!dlb_fgets(line, sizeof line, rumors) ||
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(adjtruth > 0 && dlb_ftell(rumors) > true_rumor_end)) {
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/* reached end of rumors -- go back to beginning */
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(void) dlb_fseek(rumors, beginning, SEEK_SET);
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(void) dlb_fgets(line, sizeof line, rumors);
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}
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if ((endp = index(line, '\n')) != 0) *endp = 0;
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Strcat(rumor_buf, xcrypt(line, xbuf));
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} while(count++ < 50 && exclude_cookie && (strstri(rumor_buf, "fortune") || strstri(rumor_buf, "pity")));
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(void) dlb_fclose(rumors);
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if (count >= 50)
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impossible("Can't find non-cookie rumor?");
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else
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exercise(A_WIS, (adjtruth > 0));
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} else {
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pline("Can't open rumors file!");
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true_rumor_size = -1; /* don't try to open it again */
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}
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return rumor_buf;
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}
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void
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outrumor(truth, mechanism)
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int truth; /* 1=true, -1=false, 0=either */
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int mechanism;
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{
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static const char fortune_msg[] =
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"This cookie has a scrap of paper inside.";
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const char *line;
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char buf[BUFSZ];
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boolean reading = (mechanism == BY_COOKIE ||
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mechanism == BY_PAPER);
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if (reading && Blind) {
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if (mechanism == BY_COOKIE)
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pline(fortune_msg);
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pline("What a pity that you cannot read it!");
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return;
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}
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line = getrumor(truth, buf, reading ? FALSE : TRUE);
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if (!*line)
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line = "NetHack rumors file closed for renovation.";
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switch (mechanism) {
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case BY_ORACLE:
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/* Oracle delivers the rumor */
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pline("True to her word, the Oracle %ssays: ",
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(!rn2(4) ? "offhandedly " : (!rn2(3) ? "casually " :
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(rn2(2) ? "nonchalantly " : ""))));
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verbalize("%s", line);
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exercise(A_WIS, TRUE);
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return;
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case BY_COOKIE:
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pline(fortune_msg);
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/* FALLTHRU */
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case BY_PAPER:
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pline("It reads:");
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break;
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}
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pline("%s", line);
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}
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STATIC_OVL void
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init_oracles(fp)
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dlb *fp;
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{
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register int i;
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char line[BUFSZ];
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int cnt = 0;
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/* this assumes we're only called once */
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(void) dlb_fgets(line, sizeof line, fp); /* skip "don't edit" comment*/
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(void) dlb_fgets(line, sizeof line, fp);
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if (sscanf(line, "%5d\n", &cnt) == 1 && cnt > 0) {
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oracle_cnt = (unsigned) cnt;
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oracle_loc = (long *) alloc((unsigned)cnt * sizeof (long));
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for (i = 0; i < cnt; i++) {
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(void) dlb_fgets(line, sizeof line, fp);
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(void) sscanf(line, "%5lx\n", &oracle_loc[i]);
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}
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}
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return;
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}
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void
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save_oracles(fd, mode)
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int fd, mode;
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{
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if (perform_bwrite(mode)) {
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bwrite(fd, (genericptr_t) &oracle_cnt, sizeof oracle_cnt);
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if (oracle_cnt)
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bwrite(fd, (genericptr_t)oracle_loc, oracle_cnt*sizeof (long));
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}
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if (release_data(mode)) {
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if (oracle_cnt) {
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free((genericptr_t)oracle_loc);
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oracle_loc = 0, oracle_cnt = 0, oracle_flg = 0;
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}
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}
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}
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void
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restore_oracles(fd)
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int fd;
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{
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mread(fd, (genericptr_t) &oracle_cnt, sizeof oracle_cnt);
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if (oracle_cnt) {
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oracle_loc = (long *) alloc(oracle_cnt * sizeof (long));
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mread(fd, (genericptr_t) oracle_loc, oracle_cnt * sizeof (long));
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oracle_flg = 1; /* no need to call init_oracles() */
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}
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}
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void
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outoracle(special, delphi)
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boolean special;
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boolean delphi;
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{
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char line[COLNO];
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char *endp;
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dlb *oracles;
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int oracle_idx;
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char xbuf[BUFSZ];
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if(oracle_flg < 0 || /* couldn't open ORACLEFILE */
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(oracle_flg > 0 && oracle_cnt == 0)) /* oracles already exhausted */
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return;
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oracles = dlb_fopen(ORACLEFILE, "r");
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if (oracles) {
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winid tmpwin;
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if (oracle_flg == 0) { /* if this is the first outoracle() */
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init_oracles(oracles);
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oracle_flg = 1;
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if (oracle_cnt == 0) return;
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}
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/* oracle_loc[0] is the special oracle; */
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/* oracle_loc[1..oracle_cnt-1] are normal ones */
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if (oracle_cnt <= 1 && !special) return; /*(shouldn't happen)*/
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oracle_idx = special ? 0 : rnd((int) oracle_cnt - 1);
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(void) dlb_fseek(oracles, oracle_loc[oracle_idx], SEEK_SET);
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if (!special) oracle_loc[oracle_idx] = oracle_loc[--oracle_cnt];
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tmpwin = create_nhwindow(NHW_TEXT);
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if (delphi)
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putstr(tmpwin, 0, special ?
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"The Oracle scornfully takes all your money and says:" :
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"The Oracle meditates for a moment and then intones:");
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else
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putstr(tmpwin, 0, "The message reads:");
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putstr(tmpwin, 0, "");
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while(dlb_fgets(line, COLNO, oracles) && strcmp(line,"---\n")) {
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if ((endp = index(line, '\n')) != 0) *endp = 0;
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putstr(tmpwin, 0, xcrypt(line, xbuf));
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}
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display_nhwindow(tmpwin, TRUE);
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destroy_nhwindow(tmpwin);
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(void) dlb_fclose(oracles);
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} else {
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pline("Can't open oracles file!");
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oracle_flg = -1; /* don't try to open it again */
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}
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}
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int
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doconsult(oracl)
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register struct monst *oracl;
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{
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#ifdef GOLDOBJ
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long umoney = money_cnt(invent);
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#endif
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int u_pay, minor_cost = 50, major_cost = 500 + 50 * u.ulevel;
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int add_xpts;
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char qbuf[QBUFSZ];
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multi = 0;
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if (!oracl) {
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There("is no one here to consult.");
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return 0;
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} else if (!oracl->mpeaceful) {
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pline("%s is in no mood for consultations.", Monnam(oracl));
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return 0;
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#ifndef GOLDOBJ
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} else if (!u.ugold) {
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#else
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} else if (!umoney) {
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#endif
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You("have no money.");
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return 0;
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}
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Sprintf(qbuf,
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"\"Wilt thou settle for a minor consultation?\" (%d zorkmids)",
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minor_cost);
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switch (ynq(qbuf)) {
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default:
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case 'q':
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return 0;
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case 'y':
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#ifndef GOLDOBJ
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if (u.ugold < (long)minor_cost) {
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#else
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if (umoney < (long)minor_cost) {
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#endif
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You("don't even have enough money for that!");
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return 0;
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}
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u_pay = minor_cost;
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break;
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case 'n':
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#ifndef GOLDOBJ
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if (u.ugold <= (long)minor_cost || /* don't even ask */
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#else
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if (umoney <= (long)minor_cost || /* don't even ask */
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#endif
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(oracle_cnt == 1 || oracle_flg < 0)) return 0;
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Sprintf(qbuf,
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"\"Then dost thou desire a major one?\" (%d zorkmids)",
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major_cost);
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if (yn(qbuf) != 'y') return 0;
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#ifndef GOLDOBJ
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u_pay = (u.ugold < (long)major_cost ? (int)u.ugold
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: major_cost);
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#else
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u_pay = (umoney < (long)major_cost ? (int)umoney
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: major_cost);
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#endif
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break;
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}
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#ifndef GOLDOBJ
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u.ugold -= (long)u_pay;
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oracl->mgold += (long)u_pay;
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#else
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money2mon(oracl, (long)u_pay);
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#endif
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flags.botl = 1;
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add_xpts = 0; /* first oracle of each type gives experience points */
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if (u_pay == minor_cost) {
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outrumor(1, BY_ORACLE);
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if (!u.uevent.minor_oracle)
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add_xpts = u_pay / (u.uevent.major_oracle ? 25 : 10);
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/* 5 pts if very 1st, or 2 pts if major already done */
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u.uevent.minor_oracle = TRUE;
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} else {
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boolean cheapskate = u_pay < major_cost;
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outoracle(cheapskate, TRUE);
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if (!cheapskate && !u.uevent.major_oracle)
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add_xpts = u_pay / (u.uevent.minor_oracle ? 25 : 10);
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/* ~100 pts if very 1st, ~40 pts if minor already done */
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u.uevent.major_oracle = TRUE;
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exercise(A_WIS, !cheapskate);
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}
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if (add_xpts) {
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more_experienced(add_xpts, u_pay/50);
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newexplevel();
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}
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return 1;
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}
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/*rumors.c*/
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Reference in New Issue
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