usr/src/games/atc/main.c

/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ed James.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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) 1987 by Ed James, UC Berkeley.  All rights reserved.
 *
 * Copy permission is hereby granted provided that this notice is
 * retained on all partial or complete copies.
 *
 * For more info on this and all of my stuff, mail edjames@berkeley.edu.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1990 The Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)main.c      5.4 (Berkeley) 3/5/91";
#endif /* not lint */

#include "include.h"
#include "pathnames.h"

main(ac, av)
        char    *av[];
{
        int                     seed;
        int                     f_usage = 0, f_list = 0, f_showscore = 0;
        int                     f_printpath = 0;
        char                    *file = NULL;
        char                    *name, *ptr;
#ifdef BSD
        struct itimerval        itv;
#endif
        extern char             *default_game(), *okay_game();
        extern void             log_score(), quit(), update();

        start_time = seed = time(0);

        name = *av++;
        while (*av) {
#ifndef SAVEDASH
                if (**av == '-')
                        *++*av;
                else
                        break;
#endif
                ptr = *av++;
                while (*ptr) {
                        switch (*ptr) {
                        case '?':
                        case 'u':
                                f_usage++;
                                break;
                        case 'l':
                                f_list++;
                                break;
                        case 's':
                        case 't':
                                f_showscore++;
                                break;
                        case 'p':
                                f_printpath++;
                                break;
                        case 'r':
                                seed = atoi(*av);
                                av++;
                                break;
                        case 'f':
                        case 'g':
                                file = *av;
                                av++;
                                break;
                        default:
                                fprintf(stderr, "Unknown option '%c'\n", *ptr,
                                        name);
                                f_usage++;
                                break;
                        }
                        ptr++;
                }
        }
        srandom(seed);

        if (f_usage)
                fprintf(stderr,
                    "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n",
                        name);
        if (f_showscore)
                log_score(1);
        if (f_list)
                list_games();
        if (f_printpath) {
                char    buf[100];

                strcpy(buf, _PATH_GAMES);
                buf[strlen(buf) - 1] = '\0';
                puts(buf);
        }

        if (f_usage || f_showscore || f_list || f_printpath)
                exit(0);

        if (file == NULL)
                file = default_game();
        else
                file = okay_game(file);

        if (file == NULL || read_file(file) < 0)
                exit(1);

        init_gr();
        setup_screen(sp);

        addplane();

        signal(SIGINT, quit);
        signal(SIGQUIT, quit);
#ifdef BSD
        signal(SIGTSTP, SIG_IGN);
        signal(SIGSTOP, SIG_IGN);
#endif
        signal(SIGHUP, log_score);
        signal(SIGTERM, log_score);

#ifdef BSD
        ioctl(fileno(stdin), TIOCGETP, &tty_start);
        bcopy(&tty_start, &tty_new, sizeof(tty_new));
        tty_new.sg_flags |= CBREAK;
        tty_new.sg_flags &= ~ECHO;
        ioctl(fileno(stdin), TIOCSETP, &tty_new);
#endif

#ifdef SYSV
        ioctl(fileno(stdin), TCGETA, &tty_start);
        bcopy(&tty_start, &tty_new, sizeof(tty_new));
        tty_new.c_lflag &= ~ICANON;
        tty_new.c_lflag &= ~ECHO;
        tty_new.c_cc[VMIN] = 1;
        tty_new.c_cc[VTIME] = 0;
        ioctl(fileno(stdin), TCSETAW, &tty_new);
#endif

        signal(SIGALRM, update);

#ifdef BSD
        itv.it_value.tv_sec = 0;
        itv.it_value.tv_usec = 1;
        itv.it_interval.tv_sec = sp->update_secs;
        itv.it_interval.tv_usec = 0;
        setitimer(ITIMER_REAL, &itv, NULL);
#endif
#ifdef SYSV
        alarm(sp->update_secs);
#endif

        for (;;) {
                if (getcommand() != 1)
                        planewin();
                else {
#ifdef BSD
                        itv.it_value.tv_sec = 0;
                        itv.it_value.tv_usec = 0;
                        setitimer(ITIMER_REAL, &itv, NULL);
#endif
#ifdef SYSV
                        alarm(0);
#endif

                        update();

#ifdef BSD
                        itv.it_value.tv_sec = sp->update_secs;
                        itv.it_value.tv_usec = 0;
                        itv.it_interval.tv_sec = sp->update_secs;
                        itv.it_interval.tv_usec = 0;
                        setitimer(ITIMER_REAL, &itv, NULL);
#endif
#ifdef SYSV
                        alarm(sp->update_secs);
#endif
                }
        }
}

read_file(s)
        char    *s;
{
        extern FILE     *yyin;
        int             retval;

        file = s;
        yyin = fopen(s, "r");
        if (yyin == NULL) {
                perror(s);
                return (-1);
        }
        retval = yyparse();
        fclose(yyin);

        if (retval != 0)
                return (-1);
        else
                return (0);
}

char    *
default_game()
{
        FILE            *fp;
        static char     file[256];
        char            line[256], games[256];

        strcpy(games, _PATH_GAMES);
        strcat(games, GAMES);

        if ((fp = fopen(games, "r")) == NULL) {
                perror(games);
                return (NULL);
        }
        if (fgets(line, sizeof(line), fp) == NULL) {
                fprintf(stderr, "%s: no default game available\n", games);
                return (NULL);
        }
        fclose(fp);
        line[strlen(line) - 1] = '\0';
        strcpy(file, _PATH_GAMES);
        strcat(file, line);
        return (file);
}

char    *
okay_game(s)
        char    *s;
{
        FILE            *fp;
        static char     file[256];
        char            *ret = NULL, line[256], games[256];

        strcpy(games, _PATH_GAMES);
        strcat(games, GAMES);

        if ((fp = fopen(games, "r")) == NULL) {
                perror(games);
                return (NULL);
        }
        while (fgets(line, sizeof(line), fp) != NULL) {
                line[strlen(line) - 1] = '\0';
                if (strcmp(s, line) == 0) {
                        strcpy(file, _PATH_GAMES);
                        strcat(file, line);
                        ret = file;
                        break;
                }
        }
        fclose(fp);
        if (ret == NULL) {
                test_mode = 1;
                ret = s;
                fprintf(stderr, "%s: %s: game not found\n", games, s);
                fprintf(stderr, "Your score will not be logged.\n");
                sleep(2);       /* give the guy time to read it */
        }
        return (ret);
}

list_games()
{
        FILE            *fp;
        char            line[256], games[256];
        int             num_games = 0;

        strcpy(games, _PATH_GAMES);
        strcat(games, GAMES);

        if ((fp = fopen(games, "r")) == NULL) {
                perror(games);
                return (-1);
        }
        puts("available games:");
        while (fgets(line, sizeof(line), fp) != NULL) {
                printf("        %s", line);
                num_games++;
        }
        fclose(fp);
        if (num_games == 0) {
                fprintf(stderr, "%s: no games available\n", games);
                return (-1);
        }
        return (0);
}