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/* SCCS Id: @(#)rumors.c 3.4 1996/04/20 */
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed. See license for details. */
#include "hack.h"
#include "lev.h"
#include "dlb.h"
/* [note: this comment is fairly old, but still accurate for 3.1]
* Rumors have been entirely rewritten to speed up the access. This is
* essential when working from floppies. Using fseek() the way that's done
* here means rumors following longer rumors are output more often than those
* following shorter rumors. Also, you may see the same rumor more than once
* in a particular game (although the odds are highly against it), but
* this also happens with real fortune cookies. -dgk
*/
/* 3.1
* The rumors file consists of a "do not edit" line, a hexadecimal number
* giving the number of bytes of useful/true rumors, followed by those
* true rumors (one per line), followed by the useless/false/misleading/cute
* rumors (also one per line). Number of bytes of untrue rumors is derived
* via fseek(EOF)+ftell().
*
* The oracles file consists of a "do not edit" comment, a decimal count N
* and set of N+1 hexadecimal fseek offsets, followed by N multiple-line
* records, separated by "---" lines. The first oracle is a special case,
* and placed there by 'makedefs'.
*/
STATIC_DCL void FDECL(init_rumors, (dlb *));
STATIC_DCL void FDECL(init_oracles, (dlb *));
static long true_rumor_start, true_rumor_size, true_rumor_end,
false_rumor_start, false_rumor_size, false_rumor_end;
static int oracle_flg = 0; /* -1=>don't use, 0=>need init, 1=>init done */
static unsigned oracle_cnt = 0;
static long *oracle_loc = 0;
STATIC_OVL void
init_rumors(fp)
dlb *fp;
{
char line[BUFSZ];
(void) dlb_fgets(line, sizeof line, fp); /* skip "don't edit" comment */
(void) dlb_fgets(line, sizeof line, fp);
if (sscanf(line, "%6lx\n", &true_rumor_size) == 1 &&
true_rumor_size > 0L) {
(void) dlb_fseek(fp, 0L, SEEK_CUR);
true_rumor_start = dlb_ftell(fp);
true_rumor_end = true_rumor_start + true_rumor_size;
(void) dlb_fseek(fp, 0L, SEEK_END);
false_rumor_end = dlb_ftell(fp);
false_rumor_start = true_rumor_end; /* ok, so it's redundant... */
false_rumor_size = false_rumor_end - false_rumor_start;
} else
true_rumor_size = -1L; /* init failed */
}
/* exclude_cookie is a hack used because we sometimes want to get rumors in a
* context where messages such as "You swallowed the fortune!" that refer to
* cookies should not appear. This has no effect for true rumors since none
* of them contain such references anyway.
*/
char *
getrumor(truth, rumor_buf, exclude_cookie)
int truth; /* 1=true, -1=false, 0=either */
char *rumor_buf;
boolean exclude_cookie;
{
dlb *rumors;
long tidbit, beginning;
char *endp, line[BUFSZ], xbuf[BUFSZ];
rumor_buf[0] = '\0';
if (true_rumor_size < 0L) /* we couldn't open RUMORFILE */
return rumor_buf;
rumors = dlb_fopen(RUMORFILE, "r");
if (rumors) {
int count = 0;
int adjtruth;
do {
rumor_buf[0] = '\0';
if (true_rumor_size == 0L) { /* if this is 1st outrumor() */
init_rumors(rumors);
if (true_rumor_size < 0L) { /* init failed */
Sprintf(rumor_buf, "Error reading \"%.80s\".",
RUMORFILE);
return rumor_buf;
}
}
/*
* input: 1 0 -1
* rn2 \ +1 2=T 1=T 0=F
* adj./ +0 1=T 0=F -1=F
*/
switch (adjtruth = truth + rn2(2)) {
case 2: /*(might let a bogus input arg sneak thru)*/
case 1: beginning = true_rumor_start;
tidbit = Rand() % true_rumor_size;
break;
case 0: /* once here, 0 => false rather than "either"*/
case -1: beginning = false_rumor_start;
tidbit = Rand() % false_rumor_size;
break;
default:
impossible("strange truth value for rumor");
return strcpy(rumor_buf, "Oops...");
}
(void) dlb_fseek(rumors, beginning + tidbit, SEEK_SET);
(void) dlb_fgets(line, sizeof line, rumors);
if (!dlb_fgets(line, sizeof line, rumors) ||
(adjtruth > 0 && dlb_ftell(rumors) > true_rumor_end)) {
/* reached end of rumors -- go back to beginning */
(void) dlb_fseek(rumors, beginning, SEEK_SET);
(void) dlb_fgets(line, sizeof line, rumors);
}
if ((endp = index(line, '\n')) != 0) *endp = 0;
Strcat(rumor_buf, xcrypt(line, xbuf));
} while(count++ < 50 && exclude_cookie && (strstri(rumor_buf, "fortune") || strstri(rumor_buf, "pity")));
(void) dlb_fclose(rumors);
if (count >= 50)
impossible("Can't find non-cookie rumor?");
else
exercise(A_WIS, (adjtruth > 0));
} else {
pline("Can't open rumors file!");
true_rumor_size = -1; /* don't try to open it again */
}
return rumor_buf;
}
void
outrumor(truth, mechanism)
int truth; /* 1=true, -1=false, 0=either */
int mechanism;
{
static const char fortune_msg[] =
"This cookie has a scrap of paper inside.";
const char *line;
char buf[BUFSZ];
boolean reading = (mechanism == BY_COOKIE ||
mechanism == BY_PAPER);
if (reading) {
/* deal with various things that prevent reading */
if (is_fainted() && mechanism == BY_COOKIE)
return;
else if (Blind) {
if (mechanism == BY_COOKIE)
pline(fortune_msg);
pline("What a pity that you cannot read it!");
return;
}
}
line = getrumor(truth, buf, reading ? FALSE : TRUE);
if (!*line)
line = "NetHack rumors file closed for renovation.";
switch (mechanism) {
case BY_ORACLE:
/* Oracle delivers the rumor */
pline("True to her word, the Oracle %ssays: ",
(!rn2(4) ? "offhandedly " : (!rn2(3) ? "casually " :
(rn2(2) ? "nonchalantly " : ""))));
verbalize("%s", line);
exercise(A_WIS, TRUE);
return;
case BY_COOKIE:
pline(fortune_msg);
/* FALLTHRU */
case BY_PAPER:
pline("It reads:");
break;
}
pline("%s", line);
}
STATIC_OVL void
init_oracles(fp)
dlb *fp;
{
register int i;
char line[BUFSZ];
int cnt = 0;
/* this assumes we're only called once */
(void) dlb_fgets(line, sizeof line, fp); /* skip "don't edit" comment*/
(void) dlb_fgets(line, sizeof line, fp);
if (sscanf(line, "%5d\n", &cnt) == 1 && cnt > 0) {
oracle_cnt = (unsigned) cnt;
oracle_loc = (long *) alloc((unsigned)cnt * sizeof (long));
for (i = 0; i < cnt; i++) {
(void) dlb_fgets(line, sizeof line, fp);
(void) sscanf(line, "%5lx\n", &oracle_loc[i]);
}
}
return;
}
void
save_oracles(fd, mode)
FILE* fd;
int mode;
{
if (perform_bwrite(mode)) {
bwrite(fd, (genericptr_t) &oracle_cnt, sizeof oracle_cnt);
if (oracle_cnt)
bwrite(fd, (genericptr_t)oracle_loc, oracle_cnt*sizeof (long));
}
if (release_data(mode)) {
if (oracle_cnt) {
free((genericptr_t)oracle_loc);
oracle_loc = 0, oracle_cnt = 0, oracle_flg = 0;
}
}
}
void
restore_oracles(fd)
FILE* fd;
{
mread(fd, (genericptr_t) &oracle_cnt, sizeof oracle_cnt);
if (oracle_cnt) {
oracle_loc = (long *) alloc(oracle_cnt * sizeof (long));
mread(fd, (genericptr_t) oracle_loc, oracle_cnt * sizeof (long));
oracle_flg = 1; /* no need to call init_oracles() */
}
}
void
outoracle(special, delphi)
boolean special;
boolean delphi;
{
char line[COLNO];
char *endp;
dlb *oracles;
int oracle_idx;
char xbuf[BUFSZ];
if(oracle_flg < 0 || /* couldn't open ORACLEFILE */
(oracle_flg > 0 && oracle_cnt == 0)) /* oracles already exhausted */
return;
oracles = dlb_fopen(ORACLEFILE, "r");
if (oracles) {
winid tmpwin;
if (oracle_flg == 0) { /* if this is the first outoracle() */
init_oracles(oracles);
oracle_flg = 1;
if (oracle_cnt == 0) return;
}
/* oracle_loc[0] is the special oracle; */
/* oracle_loc[1..oracle_cnt-1] are normal ones */
if (oracle_cnt <= 1 && !special) return; /*(shouldn't happen)*/
oracle_idx = special ? 0 : rnd((int) oracle_cnt - 1);
(void) dlb_fseek(oracles, oracle_loc[oracle_idx], SEEK_SET);
if (!special) oracle_loc[oracle_idx] = oracle_loc[--oracle_cnt];
tmpwin = create_nhwindow(NHW_TEXT);
if (delphi)
putstr(tmpwin, 0, special ?
"The Oracle scornfully takes all your money and says:" :
"The Oracle meditates for a moment and then intones:");
else
putstr(tmpwin, 0, "The message reads:");
putstr(tmpwin, 0, "");
while(dlb_fgets(line, COLNO, oracles) && strcmp(line,"---\n")) {
if ((endp = index(line, '\n')) != 0) *endp = 0;
putstr(tmpwin, 0, xcrypt(line, xbuf));
}
display_nhwindow(tmpwin, TRUE);
destroy_nhwindow(tmpwin);
(void) dlb_fclose(oracles);
} else {
pline("Can't open oracles file!");
oracle_flg = -1; /* don't try to open it again */
}
}
int
doconsult(oracl)
register struct monst *oracl;
{
#ifdef GOLDOBJ
long umoney = money_cnt(invent);
#endif
int u_pay, minor_cost = 50, major_cost = 500 + 50 * u.ulevel;
int add_xpts;
char qbuf[QBUFSZ];
multi = 0;
if (!oracl) {
There("is no one here to consult.");
return 0;
} else if (!oracl->mpeaceful) {
pline("%s is in no mood for consultations.", Monnam(oracl));
return 0;
#ifndef GOLDOBJ
} else if (!u.ugold) {
#else
} else if (!umoney) {
#endif
You("have no money.");
return 0;
}
Sprintf(qbuf,
"\"Wilt thou settle for a minor consultation?\" (%d %s)",
minor_cost, currency((long)minor_cost));
switch (ynq(qbuf)) {
default:
case 'q':
return 0;
case 'y':
#ifndef GOLDOBJ
if (u.ugold < (long)minor_cost) {
#else
if (umoney < (long)minor_cost) {
#endif
You("don't even have enough money for that!");
return 0;
}
u_pay = minor_cost;
break;
case 'n':
#ifndef GOLDOBJ
if (u.ugold <= (long)minor_cost || /* don't even ask */
#else
if (umoney <= (long)minor_cost || /* don't even ask */
#endif
(oracle_cnt == 1 || oracle_flg < 0)) return 0;
Sprintf(qbuf,
"\"Then dost thou desire a major one?\" (%d %s)",
major_cost, currency((long)major_cost));
if (yn(qbuf) != 'y') return 0;
#ifndef GOLDOBJ
u_pay = (u.ugold < (long)major_cost ? (int)u.ugold
: major_cost);
#else
u_pay = (umoney < (long)major_cost ? (int)umoney
: major_cost);
#endif
break;
}
#ifndef GOLDOBJ
u.ugold -= (long)u_pay;
oracl->mgold += (long)u_pay;
#else
money2mon(oracl, (long)u_pay);
#endif
flags.botl = 1;
add_xpts = 0; /* first oracle of each type gives experience points */
if (u_pay == minor_cost) {
outrumor(1, BY_ORACLE);
if (!u.uevent.minor_oracle)
add_xpts = u_pay / (u.uevent.major_oracle ? 25 : 10);
/* 5 pts if very 1st, or 2 pts if major already done */
u.uevent.minor_oracle = TRUE;
} else {
boolean cheapskate = u_pay < major_cost;
outoracle(cheapskate, TRUE);
if (!cheapskate && !u.uevent.major_oracle)
add_xpts = u_pay / (u.uevent.minor_oracle ? 25 : 10);
/* ~100 pts if very 1st, ~40 pts if minor already done */
u.uevent.major_oracle = TRUE;
exercise(A_WIS, !cheapskate);
}
if (add_xpts) {
more_experienced(add_xpts, u_pay/50);
newexplevel();
}
return 1;
}
/*rumors.c*/
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