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/* SCCS Id: @(#)rumors.c 3.0 89/02/08
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* NetHack may be freely redistributed. See license for details. */
/* hack.rumors.c - version 1.0.3 */
#include "hack.h" /* for RUMORFILE and BSD (index) */
/* Rumors has 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. Besides, a person can
* just read the rumor file if they desire. -dgk
*/
/* The rumors file consists of a long giving the number of bytes of useful/true
* rumors, followed by the true rumors (one per line), followed by the useless/
* false/misleading/cute rumors (one per line).
*/
/* The oracle file consists of a number of multiple-line records, separated
* (but not terminated) by "-----" lines.
*/
static void NDECL(init_rumors);
static void NDECL(outoracle);
long first_rumor = sizeof(long);
long true_rumor_size, false_rumor_size, end_rumor_file;
#ifdef ORACLE
long oracle_size;
#endif
static void
init_rumors()
{
register FILE *fp;
#ifdef OS2_CODEVIEW
{
char tmp[PATHLEN];
Strcpy(tmp,hackdir);
append_slash(tmp);
Strcat(tmp,RUMORFILE);
if(fp = fopen(tmp, "r")) {
#else
# ifdef MACOS
if(!(fp = fopen(RUMORFILE, "r")))
fp = openFile(RUMORFILE, "r");
if (fp) {
# else
if(fp = fopen(RUMORFILE, "r")) {
# endif
#endif
(void) fread((genericptr_t)&true_rumor_size,sizeof(long),1,fp);
(void) fseek(fp, 0L, 2);
end_rumor_file = ftell(fp);
false_rumor_size = (end_rumor_file-sizeof(long)) - true_rumor_size;
(void) fclose(fp);
} else {
pline("Can't open rumors file!");
end_rumor_file = -1; /* don't try to open it again */
}
#ifdef OS2_CODEVIEW
}
#endif
#ifdef ORACLE
#ifdef OS2_CODEVIEW
{
char tmp[PATHLEN];
Strcpy(tmp,hackdir);
append_slash(tmp);
Strcat(tmp,ORACLEFILE);
if(fp = fopen(tmp, "r")) {
#else
# ifdef MACOS
if(!(fp = fopen(ORACLEFILE, "r")))
fp = openFile(ORACLEFILE, "r");
if (fp) {
# else
if(fp = fopen(ORACLEFILE, "r")) {
# endif
#endif
(void) fseek(fp, 0L, 2);
oracle_size = ftell(fp);
(void) fclose(fp);
} else {
pline("Can't open oracles file!");
oracle_size = -1; /* don't try to open it again */
}
#ifdef OS2_CODEVIEW
}
#endif
#endif
}
void
outrumor(truth,cookie)
int truth; /* 1=true, -1=false, 0=either */
boolean cookie;
{
static const char fortune_msg[] =
"This cookie has a scrap of paper inside.";
char line[COLNO];
char *endp;
FILE *rumors;
long tidbit, beginning;
if (cookie && Blind) {
pline(fortune_msg);
pline("What a pity that you cannot read it!");
return;
}
if (end_rumor_file < 0) /* We couldn't open RUMORFILE */
return;
#ifdef OS2_CODEVIEW
{
char tmp[PATHLEN];
Strcpy(tmp,hackdir);
append_slash(tmp);
Strcat(tmp,RUMORFILE);
if(rumors = fopen(tmp, "r")) {
#else
# ifdef MACOS
if(!(rumors = fopen(RUMORFILE, "r")))
rumors = openFile(RUMORFILE, "r");
if (rumors) {
# else
if(rumors = fopen(RUMORFILE, "r")) {
# endif
#endif
if (!end_rumor_file) { /* if this is the first outrumor() */
init_rumors();
}
if (!truth) truth = (rn2(100) >= 50 ? 1 : -1);
/* otherwise, 50% chance of being true */
switch(truth) {
case 1: beginning = first_rumor;
tidbit = Rand() % true_rumor_size;
break;
case -1: beginning = first_rumor + true_rumor_size;
tidbit = true_rumor_size + Rand() % false_rumor_size;
break;
default:
impossible("strange truth value for rumor");
tidbit = 0; beginning = first_rumor;
break;
}
(void) fseek(rumors, first_rumor + tidbit, 0);
(void) fgets(line, COLNO, rumors);
if (!fgets(line, COLNO, rumors) || (truth == 1 &&
(ftell(rumors) > true_rumor_size + sizeof(long)))) {
/* reached end of rumors -- go back to beginning */
(void) fseek(rumors, beginning, 0);
(void) fgets(line, COLNO, rumors);
}
if (endp = index(line, '\n')) *endp = 0;
if (cookie) {
pline(fortune_msg);
pline("It reads:");
} else pline("Tidbit of information #%ld: ",tidbit);
pline(line);
(void) fclose(rumors);
} else {
pline("Can't open rumors file!");
end_rumor_file = -1; /* don't try to open it again */
}
#ifdef OS2_CODEVIEW
}
#endif
}
#ifdef ORACLE
static void
outoracle()
{
char line[COLNO];
char *endp;
FILE *oracles;
if (oracle_size < 0) /* We couldn't open ORACLEFILE */
return;
#ifdef OS2_CODEVIEW
{
char tmp[PATHLEN];
Strcpy(tmp,hackdir);
append_slash(tmp);
Strcat(tmp,ORACLEFILE);
if(oracles = fopen(tmp, "r")) {
#else
# ifdef MACOS
if(!(oracles = fopen(ORACLEFILE, "r")))
oracles = openFile(ORACLEFILE, "r");
if (oracles) {
# else
if(oracles = fopen(ORACLEFILE, "r")) {
# endif
#endif
if (!oracle_size) { /* if this is the first outrumor() */
init_rumors();
}
(void) fseek(oracles, Rand() % oracle_size, 0);
(void) fgets(line, COLNO, oracles);
while (1)
if (!fgets(line, COLNO, oracles)) {
/* reached end of oracle info -- go back to beginning */
(void) fseek(oracles, 0L, 0);
break;
} else if (!strncmp(line,"-----",5)) {
/* found end of an oracle proclamation */
break;
}
pline("The Oracle meditates for a moment and then intones: ");
cornline(0,NULL);
while (fgets(line, COLNO, oracles) && strncmp(line,"-----",5)) {
if (endp = index(line, '\n')) *endp = 0;
cornline(1,line);
}
cornline(2,"");
(void) fclose(oracles);
} else {
pline("Can't open oracles file!");
oracle_size = -1; /* don't try to open it again */
}
#ifdef OS2_CODEVIEW
}
#endif
}
int
doconsult(oracl)
register struct monst *oracl;
{
register char ans;
multi = 0;
(void) inshop();
if(!oracl) {
pline("There is no one here to consult.");
return(0);
}
if(!oracl->mpeaceful) {
pline("The Oracle is in no mood for consultations.");
return(0);
} else {
if(!u.ugold) {
You("have no money.");
return(0);
}
pline("\"Wilt thou settle for a minor consultation?\" (50 zorkmids) ");
ans = ynq();
if(ans == 'y') {
if(u.ugold < 50) {
You("don't even have enough money for that!");
return(0);
}
u.ugold -= 50;
oracl->mgold += 50;
flags.botl = 1;
outrumor(1, FALSE);
return(1);
} else if(ans == 'q') return(0);
else {
pline("\"Then dost thou desire a major one?\" (1000 zorkmids) ");
if (yn() != 'y') return(0);
}
if(u.ugold < 1000) {
pline("The Oracle scornfully takes all your money and says:");
cornline(0,NULL);
cornline(1,"\"...it is rather disconcerting to be confronted with the");
cornline(1,"following theorem from [Baker, Gill, and Solovay, 1975].");
cornline(1,"");
cornline(1,"Theorem 7.18 There exist recursive languages A and B such that");
cornline(1," (1) P(A) == NP(A), and");
cornline(1," (2) P(B) != NP(B)");
cornline(1,"");
cornline(1,"This provides impressive evidence that the techniques that are");
cornline(1,"currently available will not suffice for proving that P != NP or");
cornline(1,"that P == NP.\" [Garey and Johnson, p. 185.]");
cornline(2,"");
oracl->mgold += u.ugold;
u.ugold = 0;
flags.botl = 1;
return(1);
}
u.ugold -= 1000;
oracl->mgold += 1000;
flags.botl = 1;
outoracle();
return(1);
}
}
#endif
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