view rogue5/main.c @ 162:600873555ec0

Don't swap signal handlers in md_shellescape(). md_shellescape() sets SIGINT and SIGQUIT to be ignored, storing the previous handlers, and restores them after the shell exits. But it mixed up the two handlers. Since the signals were usually handled by the same function, this fix doesn't have much effect, but anything that makes signal code less confusing is a good thing.
author John "Elwin" Edwards
date Mon, 08 Jun 2015 10:01:25 -0400
parents ee250e3646fd
children 3d4252fa2ed3
line wrap: on
line source

/*
 * Rogue: Exploring the Dungeons of Doom
 * Copyright (C) 1980-1983, 1985, 1999 Michael Toy, Ken Arnold and Glenn Wichman
 * All rights reserved.
 *
 * See the file LICENSE.TXT for full copyright and licensing information.
 *
 * @(#)main.c	4.22 (Berkeley) 02/05/99
 */

#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <time.h>
#include <curses.h>
#include "rogue.h"

/*
 * main:
 *	The main program, of course
 */
int
main(int argc, char **argv)
{
    char *env;
    time_t lowtime;

    md_init();

#ifdef MASTER
    /*
     * Check to see if he is a wizard
     */
    if (argc >= 2 && argv[1][0] == '\0')
	if (strcmp(PASSWD, md_crypt(md_getpass("wizard's password: "), "mT")) == 0)
	{
	    wizard = TRUE;
	    player.t_flags |= SEEMONST;
	    argv++;
	    argc--;
	}

#endif

    /* Check to see if savefiles should be stored in the system location */
#ifdef SAVEDIR
    if (argc >= 3 && !strcmp(argv[1], "-n"))
    {
        use_savedir = TRUE;
        strncpy(whoami, argv[2], MAXSTR);
        whoami[MAXSTR-1] = '\0';
        snprintf(file_name, MAXSTR, "%s/%d-%.80s.r5sav", SAVEDIR, 
                 md_getuid(), whoami);
    }
#endif

    open_score();
    open_log();

    /*
     * get home and options from environment
     */

    strcpy(home, md_gethomedir());

	if (strlen(home) > MAXSTR - strlen("rogue5.save") - 1)
		*home = 0;

    if (!use_savedir)
    {
        md_normaluser();
        strcpy(file_name, home);
        strcat(file_name, "rogue5.save");
    }

    if ((env = getenv("ROGUEOPTS")) != NULL)
	parse_opts(env);
    if (!use_savedir && (env == NULL || whoami[0] == '\0'))
        strucpy(whoami, md_getusername(), strlen(md_getusername()));
    lowtime = time(NULL);
    if (getenv("SEED") != NULL)
    {
	dnum = atoi(getenv("SEED"));
	noscore = 1;
    }
    else
	dnum = (unsigned int) lowtime + md_getpid();
    seed = dnum;

    /*
     * check for print-score option
     */

    if (argc == 2)
    {
	if (strcmp(argv[1], "-s") == 0)
	{
	    noscore = TRUE;
	    score(0, -1, 0);
	    exit(0);
	}
	else if (strcmp(argv[1], "-d") == 0)
	{
	    dnum = rnd(100);	/* throw away some rnd()s to break patterns */
	    while (--dnum)
		rnd(100);
	    purse = rnd(100) + 1;
	    level = rnd(100) + 1;
	    initscr();
	    getltchars();
	    death(death_monst());
	    exit(0);
	}
    }

    init_check();			/* check for legal startup */
    if (use_savedir)
    {
        /* If there is a saved game, restore() will not return.  If it 
         * returns 1, there isn't a game, so start one.  If 0, there was
         * an error. */
        if (!restore(file_name))
            my_exit(1);
    }
    else if (argc == 2)
	if (!restore(argv[1]))	/* Note: restore will never return */
	    my_exit(1);
#ifdef MASTER
    if (wizard)
	printf("Hello %s, welcome to dungeon #%d\n", whoami, dnum);
    else
#endif
	printf("Hello %s, just a moment while I dig the dungeon...\n", whoami);
    fflush(stdout);

    initscr();				/* Start up cursor package */
    init_probs();			/* Set up prob tables for objects */
    init_player();			/* Set up initial player stats */
    init_names();			/* Set up names of scrolls */
    init_colors();			/* Set up colors of potions */
    init_stones();			/* Set up stone settings of rings */
    init_materials();			/* Set up materials of wands */
    setup();

    /*
     * The screen must be at least NUMLINES x NUMCOLS
     */
    if (LINES < NUMLINES || COLS < NUMCOLS)
    {
	printf("\nSorry, the screen must be at least %dx%d\n", NUMLINES, NUMCOLS);
	endwin();
	my_exit(1);
    }

    /*
     * Set up windows
     */
    hw = newwin(LINES, COLS, 0, 0);
    idlok(stdscr, TRUE);
    idlok(hw, TRUE);
#ifdef MASTER
    noscore = wizard;
#endif
    new_level();			/* Draw current level */
    /*
     * Start up daemons and fuses
     */
    start_daemon(runners, 0, AFTER);
    start_daemon(doctor, 0, AFTER);
    fuse(swander, 0, WANDERTIME, AFTER);
    start_daemon(stomach, 0, AFTER);
    playit();
    return(0);
}

/*
 * endit:
 *	Exit the program abnormally.
 */

void
endit(int sig)
{
    NOOP(sig);
    fatal("Okay, bye bye!\n");
}

/*
 * fatal:
 *	Exit the program, printing a message.
 */

void
fatal(const char *s)
{
    mvaddstr(LINES - 2, 0, s);
    refresh();
    endwin();
    my_exit(0);
}

/*
 * rnd:
 *	Pick a very random number.
 */
int
rnd(int range)
{
    return range == 0 ? 0 : abs((int) RN) % range;
}

/*
 * roll:
 *	Roll a number of dice
 */
int 
roll(int number, int sides)
{
    int dtotal = 0;

    while (number--)
	dtotal += rnd(sides)+1;
    return dtotal;
}

/*
 * tstp:
 *	Handle stop and start signals
 */

void
tstp(int ignored)
{
    int y, x;
    int oy, ox;

	NOOP(ignored);

    /*
     * leave nicely
     */
    getyx(curscr, oy, ox);
    mvcur(0, COLS - 1, LINES - 1, 0);
    endwin();
    resetltchars();
    fflush(stdout);
	md_tstpsignal();

    /*
     * start back up again
     */
	md_tstpresume();
    raw();
    noecho();
    nonl();
    keypad(stdscr,1);
    playltchars();
    clearok(curscr, TRUE);
    wrefresh(curscr);
    getyx(curscr, y, x);
    mvcur(y, x, oy, ox);
    fflush(stdout);
    curscr->_cury = oy;
    curscr->_curx = ox;
}

/*
 * playit:
 *	The main loop of the program.  Loop until the game is over,
 *	refreshing things and looking at the proper times.
 */

void
playit(void)
{
    char *opts;

    /*
     * set up defaults for slow terminals
     */

    if (baudrate() <= 1200)
    {
	terse = TRUE;
	jump = TRUE;
	see_floor = FALSE;
    }

    if (md_hasclreol())
	inv_type = INV_CLEAR;

    /*
     * parse environment declaration of options
     */
    if ((opts = getenv("ROGUEOPTS")) != NULL)
	parse_opts(opts);


    oldpos = hero;
    oldrp = roomin(&hero);
    while (playing)
	command();			/* Command execution */
    endit(0);
}

/*
 * quit:
 *	Have player make certain, then exit.
 */

void
quit(int sig)
{
    int oy, ox;

    NOOP(sig);

    /*
     * Reset the signal in case we got here via an interrupt
     */
    if (!q_comm)
	mpos = 0;
    getyx(curscr, oy, ox);
    msg("really quit?");
    if (readchar() == 'y')
    {
	signal(SIGINT, leave);
	clear();
	mvprintw(LINES - 2, 0, "You quit with %d gold pieces", purse);
	move(LINES - 1, 0);
	refresh();
        writelog(purse, 1, 0);
	score(purse, 1, 0);
	printf("[Press return to exit]\n");
	fflush(NULL);
	getchar();
	my_exit(0);
    }
    else
    {
	move(0, 0);
	clrtoeol();
	status();
	move(oy, ox);
	refresh();
	mpos = 0;
	count = 0;
	to_death = FALSE;
    }
}

/*
 * leave:
 *	Leave quickly, but curteously
 */

void
leave(int sig)
{
    static char buf[BUFSIZ];

    NOOP(sig);

    setbuf(stdout, buf);	/* throw away pending output */

    if (!isendwin())
    {
	mvcur(0, COLS - 1, LINES - 1, 0);
	endwin();
    }

    putchar('\n');
    my_exit(0);
}

/*
 * shell:
 *	Let them escape for a while
 */

void
shell(void)
{
    /*
     * Set the terminal back to original mode
     */
    move(LINES-1, 0);
    refresh();
    endwin();
    resetltchars();
    putchar('\n');
    in_shell = TRUE;
    after = FALSE;
    fflush(stdout);
    /*
     * Fork and do a shell
     */
    md_shellescape();

    noecho();
    raw();
    nonl();
    keypad(stdscr,1);
    playltchars();
    in_shell = FALSE;
    clearok(stdscr, TRUE);
}

/*
 * my_exit:
 *	Leave the process properly
 */

void
my_exit(int st)
{
    resetltchars();
    exit(st);
}