4.4BSD/usr/src/games/hack/hack.main.c
/* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
/* hack.main.c - version 1.0.3 */
#include <stdio.h>
#include <signal.h>
#include "hack.h"
#ifdef QUEST
#define gamename "quest"
#else
#define gamename "hack"
#endif
extern char *getlogin(), *getenv();
extern char plname[PL_NSIZ], pl_character[PL_CSIZ];
extern struct permonst mons[CMNUM+2];
extern char genocided[], fut_geno[];
int (*afternmv)();
int (*occupation)();
char *occtxt; /* defined when occupation != NULL */
void done1();
void hangup();
int hackpid; /* current pid */
int locknum; /* max num of players */
#ifdef DEF_PAGER
char *catmore; /* default pager */
#endif
char SAVEF[PL_NSIZ + 11] = "save/"; /* save/99999player */
char *hname; /* name of the game (argv[0] of call) */
char obuf[BUFSIZ]; /* BUFSIZ is defined in stdio.h */
extern char *nomovemsg;
extern long wailmsg;
#ifdef CHDIR
static void chdirx();
#endif
main(argc,argv)
int argc;
char *argv[];
{
register int fd;
#ifdef CHDIR
register char *dir;
#endif
hname = argv[0];
hackpid = getpid();
#ifdef CHDIR /* otherwise no chdir() */
/*
* See if we must change directory to the playground.
* (Perhaps hack runs suid and playground is inaccessible
* for the player.)
* The environment variable HACKDIR is overridden by a
* -d command line option (must be the first option given)
*/
dir = getenv("HACKDIR");
if(argc > 1 && !strncmp(argv[1], "-d", 2)) {
argc--;
argv++;
dir = argv[0]+2;
if(*dir == '=' || *dir == ':') dir++;
if(!*dir && argc > 1) {
argc--;
argv++;
dir = argv[0];
}
if(!*dir)
error("Flag -d must be followed by a directory name.");
}
#endif
/*
* Who am i? Algorithm: 1. Use name as specified in HACKOPTIONS
* 2. Use $USER or $LOGNAME (if 1. fails)
* 3. Use getlogin() (if 2. fails)
* The resulting name is overridden by command line options.
* If everything fails, or if the resulting name is some generic
* account like "games", "play", "player", "hack" then eventually
* we'll ask him.
* Note that we trust him here; it is possible to play under
* somebody else's name.
*/
{ register char *s;
initoptions();
if(!*plname && (s = getenv("USER")))
(void) strncpy(plname, s, sizeof(plname)-1);
if(!*plname && (s = getenv("LOGNAME")))
(void) strncpy(plname, s, sizeof(plname)-1);
if(!*plname && (s = getlogin()))
(void) strncpy(plname, s, sizeof(plname)-1);
}
/*
* Now we know the directory containing 'record' and
* may do a prscore().
*/
if(argc > 1 && !strncmp(argv[1], "-s", 2)) {
#ifdef CHDIR
chdirx(dir,0);
#endif
prscore(argc, argv);
exit(0);
}
/*
* It seems he really wants to play.
* Remember tty modes, to be restored on exit.
*/
gettty();
setbuf(stdout,obuf);
setrandom();
startup();
cls();
u.uhp = 1; /* prevent RIP on early quits */
u.ux = FAR; /* prevent nscr() */
(void) signal(SIGHUP, hangup);
/*
* Find the creation date of this game,
* so as to avoid restoring outdated savefiles.
*/
gethdate(hname);
/*
* We cannot do chdir earlier, otherwise gethdate will fail.
*/
#ifdef CHDIR
chdirx(dir,1);
#endif
/*
* Process options.
*/
while(argc > 1 && argv[1][0] == '-'){
argv++;
argc--;
switch(argv[0][1]){
#ifdef WIZARD
case 'D':
/* if(!strcmp(getlogin(), WIZARD)) */
wizard = TRUE;
/* else
printf("Sorry.\n"); */
break;
#endif
#ifdef NEWS
case 'n':
flags.nonews = TRUE;
break;
#endif
case 'u':
if(argv[0][2])
(void) strncpy(plname, argv[0]+2, sizeof(plname)-1);
else if(argc > 1) {
argc--;
argv++;
(void) strncpy(plname, argv[0], sizeof(plname)-1);
} else
printf("Player name expected after -u\n");
break;
default:
/* allow -T for Tourist, etc. */
(void) strncpy(pl_character, argv[0]+1,
sizeof(pl_character)-1);
/* printf("Unknown option: %s\n", *argv); */
}
}
if(argc > 1)
locknum = atoi(argv[1]);
#ifdef MAX_NR_OF_PLAYERS
if(!locknum || locknum > MAX_NR_OF_PLAYERS)
locknum = MAX_NR_OF_PLAYERS;
#endif
#ifdef DEF_PAGER
if(!(catmore = getenv("HACKPAGER")) && !(catmore = getenv("PAGER")))
catmore = DEF_PAGER;
#endif
#ifdef MAIL
getmailstatus();
#endif
#ifdef WIZARD
if(wizard) (void) strcpy(plname, "wizard"); else
#endif
if(!*plname || !strncmp(plname, "player", 4)
|| !strncmp(plname, "games", 4))
askname();
plnamesuffix(); /* strip suffix from name; calls askname() */
/* again if suffix was whole name */
/* accepts any suffix */
#ifdef WIZARD
if(!wizard) {
#endif
/*
* check for multiple games under the same name
* (if !locknum) or check max nr of players (otherwise)
*/
(void) signal(SIGQUIT,SIG_IGN);
(void) signal(SIGINT,SIG_IGN);
if(!locknum)
(void) strcpy(lock,plname);
getlock(); /* sets lock if locknum != 0 */
#ifdef WIZARD
} else {
register char *sfoo;
(void) strcpy(lock,plname);
if(sfoo = getenv("MAGIC"))
while(*sfoo) {
switch(*sfoo++) {
case 'n': (void) srandom(*sfoo++);
break;
}
}
if(sfoo = getenv("GENOCIDED")){
if(*sfoo == '!'){
register struct permonst *pm = mons;
register char *gp = genocided;
while(pm < mons+CMNUM+2){
if(!index(sfoo, pm->mlet))
*gp++ = pm->mlet;
pm++;
}
*gp = 0;
} else
(void) strcpy(genocided, sfoo);
(void) strcpy(fut_geno, genocided);
}
}
#endif
setftty();
(void) sprintf(SAVEF, "save/%d%s", getuid(), plname);
regularize(SAVEF+5); /* avoid . or / in name */
if((fd = open(SAVEF,0)) >= 0 &&
(uptodate(fd) || unlink(SAVEF) == 666)) {
(void) signal(SIGINT,done1);
pline("Restoring old save file...");
(void) fflush(stdout);
if(!dorecover(fd))
goto not_recovered;
pline("Hello %s, welcome to %s!", plname, gamename);
flags.move = 0;
} else {
not_recovered:
fobj = fcobj = invent = 0;
fmon = fallen_down = 0;
ftrap = 0;
fgold = 0;
flags.ident = 1;
init_objects();
u_init();
(void) signal(SIGINT,done1);
mklev();
u.ux = xupstair;
u.uy = yupstair;
(void) inshop();
setsee();
flags.botlx = 1;
makedog();
{ register struct monst *mtmp;
if(mtmp = m_at(u.ux, u.uy)) mnexto(mtmp); /* riv05!a3 */
}
seemons();
#ifdef NEWS
if(flags.nonews || !readnews())
/* after reading news we did docrt() already */
#endif
docrt();
/* give welcome message before pickup messages */
pline("Hello %s, welcome to %s!", plname, gamename);
pickup(1);
read_engr_at(u.ux,u.uy);
flags.move = 1;
}
flags.moonphase = phase_of_the_moon();
if(flags.moonphase == FULL_MOON) {
pline("You are lucky! Full moon tonight.");
u.uluck++;
} else if(flags.moonphase == NEW_MOON) {
pline("Be careful! New moon tonight.");
}
initrack();
for(;;) {
if(flags.move) { /* actual time passed */
settrack();
if(moves%2 == 0 ||
(!(Fast & ~INTRINSIC) && (!Fast || rn2(3)))) {
extern struct monst *makemon();
movemon();
if(!rn2(70))
(void) makemon((struct permonst *)0, 0, 0);
}
if(Glib) glibr();
timeout();
++moves;
if(flags.time) flags.botl = 1;
if(u.uhp < 1) {
pline("You die...");
done("died");
}
if(u.uhp*10 < u.uhpmax && moves-wailmsg > 50){
wailmsg = moves;
if(u.uhp == 1)
pline("You hear the wailing of the Banshee...");
else
pline("You hear the howling of the CwnAnnwn...");
}
if(u.uhp < u.uhpmax) {
if(u.ulevel > 9) {
if(Regeneration || !(moves%3)) {
flags.botl = 1;
u.uhp += rnd((int) u.ulevel-9);
if(u.uhp > u.uhpmax)
u.uhp = u.uhpmax;
}
} else if(Regeneration ||
(!(moves%(22-u.ulevel*2)))) {
flags.botl = 1;
u.uhp++;
}
}
if(Teleportation && !rn2(85)) tele();
if(Searching && multi >= 0) (void) dosearch();
gethungry();
invault();
amulet();
}
if(multi < 0) {
if(!++multi){
pline(nomovemsg ? nomovemsg :
"You can move again.");
nomovemsg = 0;
if(afternmv) (*afternmv)();
afternmv = 0;
}
}
find_ac();
#ifndef QUEST
if(!flags.mv || Blind)
#endif
{
seeobjs();
seemons();
nscr();
}
if(flags.botl || flags.botlx) bot();
flags.move = 1;
if(multi >= 0 && occupation) {
if(monster_nearby())
stop_occupation();
else if ((*occupation)() == 0)
occupation = 0;
continue;
}
if(multi > 0) {
#ifdef QUEST
if(flags.run >= 4) finddir();
#endif
lookaround();
if(!multi) { /* lookaround may clear multi */
flags.move = 0;
continue;
}
if(flags.mv) {
if(multi < COLNO && !--multi)
flags.mv = flags.run = 0;
domove();
} else {
--multi;
rhack(save_cm);
}
} else if(multi == 0) {
#ifdef MAIL
ckmailstatus();
#endif
rhack((char *) 0);
}
if(multi && multi%7 == 0)
(void) fflush(stdout);
}
}
glo(foo)
register foo;
{
/* construct the string xlock.n */
register char *tf;
tf = lock;
while(*tf && *tf != '.') tf++;
(void) sprintf(tf, ".%d", foo);
}
/*
* plname is filled either by an option (-u Player or -uPlayer) or
* explicitly (-w implies wizard) or by askname.
* It may still contain a suffix denoting pl_character.
*/
askname(){
register int c,ct;
printf("\nWho are you? ");
(void) fflush(stdout);
ct = 0;
while((c = getchar()) != '\n'){
if(c == EOF) error("End of input\n");
/* some people get confused when their erase char is not ^H */
if(c == '\010') {
if(ct) ct--;
continue;
}
if(c != '-')
if(c < 'A' || (c > 'Z' && c < 'a') || c > 'z') c = '_';
if(ct < sizeof(plname)-1) plname[ct++] = c;
}
plname[ct] = 0;
if(ct == 0) askname();
}
/*VARARGS1*/
impossible(s,x1,x2)
register char *s;
{
pline(s,x1,x2);
pline("Program in disorder - perhaps you'd better Quit.");
}
#ifdef CHDIR
static void
chdirx(dir, wr)
char *dir;
boolean wr;
{
#ifdef SECURE
if(dir /* User specified directory? */
#ifdef HACKDIR
&& strcmp(dir, HACKDIR) /* and not the default? */
#endif
) {
(void) setuid(getuid()); /* Ron Wessels */
(void) setgid(getgid());
}
#endif
#ifdef HACKDIR
if(dir == NULL)
dir = HACKDIR;
#endif
if(dir && chdir(dir) < 0) {
perror(dir);
error("Cannot chdir to %s.", dir);
}
/* warn the player if he cannot write the record file */
/* perhaps we should also test whether . is writable */
/* unfortunately the access systemcall is worthless */
if(wr) {
register fd;
if(dir == NULL)
dir = ".";
if((fd = open(RECORD, 2)) < 0) {
printf("Warning: cannot write %s/%s", dir, RECORD);
getret();
} else
(void) close(fd);
}
}
#endif
stop_occupation()
{
if(occupation) {
pline("You stop %s.", occtxt);
occupation = 0;
}
}