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Initial revision
git-svn-id: file:///srv/svn/joey/bsdgames-trunk@5198 a4a2c43b-8ac3-0310-8836-e0e880c912e2
This commit is contained in:
joey
533
hack/hack.unix.c
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533
hack/hack.unix.c
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@@ -0,0 +1,533 @@
|
||||
/* $NetBSD: hack.unix.c,v 1.8 2001/03/25 20:44:03 jsm Exp $ */
|
||||
|
||||
/*
|
||||
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
|
||||
* Amsterdam
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions are
|
||||
* met:
|
||||
*
|
||||
* - Redistributions of source code must retain the above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* - Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
*
|
||||
* - Neither the name of the Stichting Centrum voor Wiskunde en
|
||||
* Informatica, nor the names of its contributors may be used to endorse or
|
||||
* promote products derived from this software without specific prior
|
||||
* written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
||||
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
||||
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
||||
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
|
||||
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
||||
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
||||
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
||||
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||||
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
/*
|
||||
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
|
||||
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
|
||||
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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||||
*/
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||||
#include <sys/cdefs.h>
|
||||
#ifndef lint
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__RCSID("$NetBSD: hack.unix.c,v 1.8 2001/03/25 20:44:03 jsm Exp $");
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#endif /* not lint */
|
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/* This file collects some Unix dependencies; hack.pager.c contains some more */
|
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|
||||
/*
|
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* The time is used for:
|
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* - seed for random()
|
||||
* - year on tombstone and yymmdd in record file
|
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* - phase of the moon (various monsters react to NEW_MOON or FULL_MOON)
|
||||
* - night and midnight (the undead are dangerous at midnight)
|
||||
* - determination of what files are "very old"
|
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*/
|
||||
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||||
#include <errno.h>
|
||||
#include <sys/types.h> /* for time_t and stat */
|
||||
#include <sys/stat.h>
|
||||
#ifdef BSD
|
||||
#include <sys/time.h>
|
||||
#else
|
||||
#include <time.h>
|
||||
#endif /* BSD */
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <signal.h>
|
||||
#include <fcntl.h>
|
||||
|
||||
#include "hack.h" /* mainly for strchr() which depends on BSD */
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#include "extern.h"
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|
||||
extern int locknum;
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||||
|
||||
|
||||
void
|
||||
setrandom()
|
||||
{
|
||||
(void) srandom((int) time((time_t *) 0));
|
||||
}
|
||||
|
||||
struct tm *
|
||||
getlt()
|
||||
{
|
||||
time_t date;
|
||||
|
||||
(void) time(&date);
|
||||
return (localtime(&date));
|
||||
}
|
||||
|
||||
int
|
||||
getyear()
|
||||
{
|
||||
return (1900 + getlt()->tm_year);
|
||||
}
|
||||
|
||||
char *
|
||||
getdate()
|
||||
{
|
||||
static char datestr[7];
|
||||
struct tm *lt = getlt();
|
||||
|
||||
(void) sprintf(datestr, "%02d%02d%02d",
|
||||
lt->tm_year % 100, lt->tm_mon + 1, lt->tm_mday);
|
||||
return (datestr);
|
||||
}
|
||||
|
||||
int
|
||||
phase_of_the_moon()
|
||||
{ /* 0-7, with 0: new, 4: full *//* moon
|
||||
* period: 29.5306 days */
|
||||
/* year: 365.2422 days */
|
||||
struct tm *lt = getlt();
|
||||
int epact, diy, golden;
|
||||
|
||||
diy = lt->tm_yday;
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||||
golden = (lt->tm_year % 19) + 1;
|
||||
epact = (11 * golden + 18) % 30;
|
||||
if ((epact == 25 && golden > 11) || epact == 24)
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||||
epact++;
|
||||
|
||||
return ((((((diy + epact) * 6) + 11) % 177) / 22) & 7);
|
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}
|
||||
|
||||
int
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night()
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||||
{
|
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int hour = getlt()->tm_hour;
|
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|
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return (hour < 6 || hour > 21);
|
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}
|
||||
|
||||
int
|
||||
midnight()
|
||||
{
|
||||
return (getlt()->tm_hour == 0);
|
||||
}
|
||||
|
||||
struct stat buf, hbuf;
|
||||
|
||||
void
|
||||
gethdate(name)
|
||||
char *name;
|
||||
{
|
||||
#if 0
|
||||
/* old version - for people short of space */
|
||||
|
||||
char *np;
|
||||
|
||||
if(stat(name, &hbuf))
|
||||
error("Cannot get status of %s.",
|
||||
(np = strrchr(name, '/')) ? np+1 : name);
|
||||
#else
|
||||
/* version using PATH from: seismo!gregc@ucsf-cgl.ARPA (Greg Couch) */
|
||||
|
||||
|
||||
/*
|
||||
* The problem with #include <sys/param.h> is that this include file
|
||||
* does not exist on all systems, and moreover, that it sometimes includes
|
||||
* <sys/types.h> again, so that the compiler sees these typedefs twice.
|
||||
*/
|
||||
#define MAXPATHLEN 1024
|
||||
|
||||
const char *np, *path;
|
||||
char filename[MAXPATHLEN + 1];
|
||||
if (strchr(name, '/') != NULL || (path = getenv("PATH")) == NULL)
|
||||
path = "";
|
||||
|
||||
for (;;) {
|
||||
if ((np = strchr(path, ':')) == NULL)
|
||||
np = path + strlen(path); /* point to end str */
|
||||
if (np - path <= 1) /* %% */
|
||||
(void) strcpy(filename, name);
|
||||
else {
|
||||
(void) strncpy(filename, path, np - path);
|
||||
filename[np - path] = '/';
|
||||
(void) strcpy(filename + (np - path) + 1, name);
|
||||
}
|
||||
if (stat(filename, &hbuf) == 0)
|
||||
return;
|
||||
if (*np == '\0')
|
||||
break;
|
||||
path = np + 1;
|
||||
}
|
||||
error("Cannot get status of %s.",
|
||||
(np = strrchr(name, '/')) ? np + 1 : name);
|
||||
#endif
|
||||
}
|
||||
|
||||
int
|
||||
uptodate(int fd)
|
||||
{
|
||||
if (fstat(fd, &buf)) {
|
||||
pline("Cannot get status of saved level? ");
|
||||
return (0);
|
||||
}
|
||||
if (buf.st_mtime < hbuf.st_mtime) {
|
||||
pline("Saved level is out of date. ");
|
||||
return (0);
|
||||
}
|
||||
return (1);
|
||||
}
|
||||
|
||||
/* see whether we should throw away this xlock file */
|
||||
int
|
||||
veryold(fd)
|
||||
int fd;
|
||||
{
|
||||
int i;
|
||||
time_t date;
|
||||
|
||||
if (fstat(fd, &buf))
|
||||
return (0); /* cannot get status */
|
||||
if (buf.st_size != sizeof(int))
|
||||
return (0); /* not an xlock file */
|
||||
(void) time(&date);
|
||||
if (date - buf.st_mtime < 3L * 24L * 60L * 60L) { /* recent */
|
||||
int lockedpid; /* should be the same size as
|
||||
* hackpid */
|
||||
|
||||
if (read(fd, (char *) &lockedpid, sizeof(lockedpid)) !=
|
||||
sizeof(lockedpid))
|
||||
/* strange ... */
|
||||
return (0);
|
||||
|
||||
/*
|
||||
* From: Rick Adams <seismo!rick> This will work on
|
||||
* 4.1cbsd, 4.2bsd and system 3? & 5. It will do nothing
|
||||
* on V7 or 4.1bsd.
|
||||
*/
|
||||
if (!(kill(lockedpid, 0) == -1 && errno == ESRCH))
|
||||
return (0);
|
||||
}
|
||||
(void) close(fd);
|
||||
for (i = 1; i <= MAXLEVEL; i++) { /* try to remove all */
|
||||
glo(i);
|
||||
(void) unlink(lock);
|
||||
}
|
||||
glo(0);
|
||||
if (unlink(lock))
|
||||
return (0); /* cannot remove it */
|
||||
return (1); /* success! */
|
||||
}
|
||||
|
||||
void
|
||||
getlock()
|
||||
{
|
||||
int i = 0, fd;
|
||||
|
||||
(void) fflush(stdout);
|
||||
|
||||
/* we ignore QUIT and INT at this point */
|
||||
if (link(HLOCK, LLOCK) == -1) {
|
||||
int errnosv = errno;
|
||||
|
||||
perror(HLOCK);
|
||||
printf("Cannot link %s to %s\n", LLOCK, HLOCK);
|
||||
switch (errnosv) {
|
||||
case ENOENT:
|
||||
printf("Perhaps there is no (empty) file %s ?\n", HLOCK);
|
||||
break;
|
||||
case EACCES:
|
||||
printf("It seems you don't have write permission here.\n");
|
||||
break;
|
||||
case EEXIST:
|
||||
printf("(Try again or rm %s.)\n", LLOCK);
|
||||
break;
|
||||
default:
|
||||
printf("I don't know what is wrong.");
|
||||
}
|
||||
getret();
|
||||
error("%s", "");
|
||||
/* NOTREACHED */
|
||||
}
|
||||
regularize(lock);
|
||||
glo(0);
|
||||
if (locknum > 25)
|
||||
locknum = 25;
|
||||
|
||||
do {
|
||||
if (locknum)
|
||||
lock[0] = 'a' + i++;
|
||||
|
||||
if ((fd = open(lock, O_RDONLY)) == -1) {
|
||||
if (errno == ENOENT)
|
||||
goto gotlock; /* no such file */
|
||||
perror(lock);
|
||||
(void) unlink(LLOCK);
|
||||
error("Cannot open %s", lock);
|
||||
}
|
||||
if (veryold(fd))/* if true, this closes fd and unlinks lock */
|
||||
goto gotlock;
|
||||
(void) close(fd);
|
||||
} while (i < locknum);
|
||||
|
||||
(void) unlink(LLOCK);
|
||||
error(locknum ? "Too many hacks running now."
|
||||
: "There is a game in progress under your name.");
|
||||
gotlock:
|
||||
fd = creat(lock, FMASK);
|
||||
if (unlink(LLOCK) == -1)
|
||||
error("Cannot unlink %s.", LLOCK);
|
||||
if (fd == -1) {
|
||||
error("cannot creat lock file.");
|
||||
} else {
|
||||
if (write(fd, (char *) &hackpid, sizeof(hackpid))
|
||||
!= sizeof(hackpid)) {
|
||||
error("cannot write lock");
|
||||
}
|
||||
if (close(fd) == -1) {
|
||||
error("cannot close lock");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef MAIL
|
||||
|
||||
/*
|
||||
* Notify user when new mail has arrived. [Idea from Merlyn Leroy, but
|
||||
* I don't know the details of his implementation.]
|
||||
* { Later note: he disliked my calling a general mailreader and felt that
|
||||
* hack should do the paging itself. But when I get mail, I want to put it
|
||||
* in some folder, reply, etc. - it would be unreasonable to put all these
|
||||
* functions in hack. }
|
||||
* The mail daemon '2' is at present not a real monster, but only a visual
|
||||
* effect. Thus, makemon() is superfluous. This might become otherwise,
|
||||
* however. The motion of '2' is less restrained than usual: diagonal moves
|
||||
* from a DOOR are possible. He might also use SDOOR's. Also, '2' is visible
|
||||
* in a ROOM, even when you are Blind.
|
||||
* Its path should be longer when you are Telepat-hic and Blind.
|
||||
*
|
||||
* Interesting side effects:
|
||||
* - You can get rich by sending yourself a lot of mail and selling
|
||||
* it to the shopkeeper. Unfortunately mail isn't very valuable.
|
||||
* - You might die in case '2' comes along at a critical moment during
|
||||
* a fight and delivers a scroll the weight of which causes you to
|
||||
* collapse.
|
||||
*
|
||||
* Possible extensions:
|
||||
* - Open the file MAIL and do fstat instead of stat for efficiency.
|
||||
* (But sh uses stat, so this cannot be too bad.)
|
||||
* - Examine the mail and produce a scroll of mail called "From somebody".
|
||||
* - Invoke MAILREADER in such a way that only this single letter is read.
|
||||
*
|
||||
* - Make him lose his mail when a Nymph steals the letter.
|
||||
* - Do something to the text when the scroll is enchanted or cancelled.
|
||||
*/
|
||||
#include "def.mkroom.h"
|
||||
static struct stat omstat, nmstat;
|
||||
static char *mailbox;
|
||||
static long laststattime;
|
||||
|
||||
void
|
||||
getmailstatus()
|
||||
{
|
||||
if (!(mailbox = getenv("MAIL")))
|
||||
return;
|
||||
if (stat(mailbox, &omstat)) {
|
||||
#ifdef PERMANENT_MAILBOX
|
||||
pline("Cannot get status of MAIL=%s .", mailbox);
|
||||
mailbox = 0;
|
||||
#else
|
||||
omstat.st_mtime = 0;
|
||||
#endif /* PERMANENT_MAILBOX */
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
ckmailstatus()
|
||||
{
|
||||
if (!mailbox
|
||||
#ifdef MAILCKFREQ
|
||||
|| moves < laststattime + MAILCKFREQ
|
||||
#endif /* MAILCKFREQ */
|
||||
)
|
||||
return;
|
||||
laststattime = moves;
|
||||
if (stat(mailbox, &nmstat)) {
|
||||
#ifdef PERMANENT_MAILBOX
|
||||
pline("Cannot get status of MAIL=%s anymore.", mailbox);
|
||||
mailbox = 0;
|
||||
#else
|
||||
nmstat.st_mtime = 0;
|
||||
#endif /* PERMANENT_MAILBOX */
|
||||
} else if (nmstat.st_mtime > omstat.st_mtime) {
|
||||
if (nmstat.st_size)
|
||||
newmail();
|
||||
getmailstatus();/* might be too late ... */
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
newmail()
|
||||
{
|
||||
/* produce a scroll of mail */
|
||||
struct obj *obj;
|
||||
struct monst *md;
|
||||
|
||||
obj = mksobj(SCR_MAIL);
|
||||
if (md = makemon(&pm_mail_daemon, u.ux, u.uy)) /* always succeeds */
|
||||
mdrush(md, 0);
|
||||
|
||||
pline("\"Hello, %s! I have some mail for you.\"", plname);
|
||||
if (md) {
|
||||
if (dist(md->mx, md->my) > 2)
|
||||
pline("\"Catch!\"");
|
||||
more();
|
||||
|
||||
/* let him disappear again */
|
||||
mdrush(md, 1);
|
||||
mondead(md);
|
||||
}
|
||||
obj = addinv(obj);
|
||||
(void) identify(obj); /* set known and do prinv() */
|
||||
}
|
||||
|
||||
/* make md run through the cave */
|
||||
void
|
||||
mdrush(md, away)
|
||||
struct monst *md;
|
||||
boolean away;
|
||||
{
|
||||
int uroom = inroom(u.ux, u.uy);
|
||||
if (uroom >= 0) {
|
||||
int tmp = rooms[uroom].fdoor;
|
||||
int cnt = rooms[uroom].doorct;
|
||||
int fx = u.ux, fy = u.uy;
|
||||
while (cnt--) {
|
||||
if (dist(fx, fy) < dist(doors[tmp].x, doors[tmp].y)) {
|
||||
fx = doors[tmp].x;
|
||||
fy = doors[tmp].y;
|
||||
}
|
||||
tmp++;
|
||||
}
|
||||
tmp_at(-1, md->data->mlet); /* open call */
|
||||
if (away) { /* interchange origin and destination */
|
||||
unpmon(md);
|
||||
tmp = fx;
|
||||
fx = md->mx;
|
||||
md->mx = tmp;
|
||||
tmp = fy;
|
||||
fy = md->my;
|
||||
md->my = tmp;
|
||||
}
|
||||
while (fx != md->mx || fy != md->my) {
|
||||
int dx, dy, nfx = fx, nfy = fy, d1,
|
||||
d2;
|
||||
|
||||
tmp_at(fx, fy);
|
||||
d1 = DIST(fx, fy, md->mx, md->my);
|
||||
for (dx = -1; dx <= 1; dx++)
|
||||
for (dy = -1; dy <= 1; dy++)
|
||||
if (dx || dy) {
|
||||
d2 = DIST(fx + dx, fy + dy, md->mx, md->my);
|
||||
if (d2 < d1) {
|
||||
d1 = d2;
|
||||
nfx = fx + dx;
|
||||
nfy = fy + dy;
|
||||
}
|
||||
}
|
||||
if (nfx != fx || nfy != fy) {
|
||||
fx = nfx;
|
||||
fy = nfy;
|
||||
} else {
|
||||
if (!away) {
|
||||
md->mx = fx;
|
||||
md->my = fy;
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
tmp_at(-1, -1); /* close call */
|
||||
}
|
||||
if (!away)
|
||||
pmon(md);
|
||||
}
|
||||
|
||||
void
|
||||
readmail()
|
||||
{
|
||||
#ifdef DEF_MAILREADER /* This implies that UNIX is defined */
|
||||
char *mr = 0;
|
||||
more();
|
||||
if (!(mr = getenv("MAILREADER")))
|
||||
mr = DEF_MAILREADER;
|
||||
if (child(1)) {
|
||||
execl(mr, mr, (char *) 0);
|
||||
exit(1);
|
||||
}
|
||||
#else /* DEF_MAILREADER */
|
||||
(void) page_file(mailbox, FALSE);
|
||||
#endif /* DEF_MAILREADER */
|
||||
/*
|
||||
* get new stat; not entirely correct: there is a small time window
|
||||
* where we do not see new mail
|
||||
*/
|
||||
getmailstatus();
|
||||
}
|
||||
#endif /* MAIL */
|
||||
|
||||
void
|
||||
regularize(s) /* normalize file name - we don't like ..'s
|
||||
* or /'s */
|
||||
char *s;
|
||||
{
|
||||
char *lp;
|
||||
|
||||
while ((lp = strchr(s, '.')) || (lp = strchr(s, '/')))
|
||||
*lp = '_';
|
||||
}
|
||||
Reference in New Issue
Block a user