robots/main.c

   1 /*      $NetBSD: main.c,v 1.31 2009/08/05 19:34:09 christos Exp $       */
   2
   3 /*
   4  * Copyright (c) 1980, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1980, 1993\
  35  The Regents of the University of California.  All rights reserved.");
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)main.c      8.1 (Berkeley) 5/31/93";
  41 #else
  42 __RCSID("$NetBSD: main.c,v 1.31 2009/08/05 19:34:09 christos Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 #include <ctype.h>
  47 #include <curses.h>
  48 #include <err.h>
  49 #include <errno.h>
  50 #include <fcntl.h>
  51 #include <signal.h>
  52 #include <stdlib.h>
  53 #include <time.h>
  54 #include <unistd.h>
  55 #include "robots.h"
  56
  57 extern const char *Scorefile;
  58 extern int Max_per_uid;
  59
  60 int
  61 main(int argc, char **argv)
  62 {
  63         const char *word;
  64         bool show_only;
  65         int score_wfd; /* high score writable file descriptor */
  66         int score_err = 0; /* hold errno from score file open */
  67         int maximum = 0;
  68         int ch, i;
  69
  70         score_wfd = open(Scorefile, O_RDWR);
  71         if (score_wfd < 0)
  72                 score_err = errno;
  73         else if (score_wfd < 3)
  74                 exit(1);
  75
  76         /* Revoke setgid privileges */
  77         setgid(getgid());
  78
  79         show_only = false;
  80         Num_games = 1;
  81
  82         while ((ch = getopt(argc, argv, "Aajnrst")) != -1) {
  83                 switch (ch) {
  84                     case 'A':
  85                         Auto_bot = true;
  86                         break;
  87                     case 'a':
  88                         Start_level = 4;
  89                         break;
  90                     case 'j':
  91                         Jump = true;
  92                         break;
  93                     case 'n':
  94                         Num_games++;
  95                         break;
  96                     case 'r':
  97                         Real_time = true;
  98                         break;
  99                     case 's':
 100                         show_only = true;
 101                         break;
 102                     case 't':
 103                         Teleport = true;
 104                         break;
 105                     default:
 106                         errx(1,
 107                             "Usage: robots [-Aajnrst] [maximum] [scorefile]");
 108                         break;
 109                 }
 110         }
 111
 112         for (i = optind; i < argc; i++) {
 113                 word = argv[i];
 114                 if (isdigit((unsigned char)word[0])) {
 115                         maximum = atoi(word);
 116                 } else {
 117                         Scorefile = word;
 118                         Max_per_uid = maximum;
 119                         if (score_wfd >= 0)
 120                                 close(score_wfd);
 121                         score_wfd = open(Scorefile, O_RDWR);
 122                         if (score_wfd < 0)
 123                                 score_err = errno;
 124 #ifdef FANCY
 125                         word = strrchr(Scorefile, '/');
 126                         if (word == NULL)
 127                                 word = Scorefile;
 128                         if (strcmp(word, "pattern_roll") == 0)
 129                                 Pattern_roll = true;
 130                         else if (strcmp(word, "stand_still") == 0)
 131                                 Stand_still = true;
 132                         if (Pattern_roll || Stand_still)
 133                                 Teleport = true;
 134 #endif
 135                 }
 136         }
 137
 138         if (show_only) {
 139                 show_score();
 140                 exit(0);
 141                 /* NOTREACHED */
 142         }
 143
 144         if (score_wfd < 0) {
 145                 errno = score_err;
 146                 warn("%s", Scorefile);
 147                 warnx("High scores will not be recorded!");
 148                 sleep(2);
 149         }
 150
 151         if (!initscr())
 152                 errx(0, "couldn't initialize screen");
 153         signal(SIGINT, quit);
 154         cbreak();
 155         noecho();
 156         nonl();
 157         if (LINES != Y_SIZE || COLS != X_SIZE) {
 158                 if (LINES < Y_SIZE || COLS < X_SIZE) {
 159                         endwin();
 160                         printf("Need at least a %dx%d screen\n",
 161                             Y_SIZE, X_SIZE);
 162                         exit(1);
 163                 }
 164                 delwin(stdscr);
 165                 stdscr = newwin(Y_SIZE, X_SIZE, 0, 0);
 166         }
 167
 168         srandom(time(NULL));
 169         if (Real_time)
 170                 signal(SIGALRM, move_robots);
 171         do {
 172                 while (Num_games--) {
 173                         init_field();
 174                         for (Level = Start_level; !Dead; Level++) {
 175                                 make_level();
 176                                 play_level();
 177                                 if (Auto_bot)
 178                                         sleep(1);
 179                         }
 180                         move(My_pos.y, My_pos.x);
 181                         printw("AARRrrgghhhh....");
 182                         refresh();
 183                         if (Auto_bot)
 184                                 sleep(1);
 185                         score(score_wfd);
 186                         if (Auto_bot)
 187                                 sleep(1);
 188                         refresh();
 189                 }
 190                 Num_games = 1;
 191         } while (!Auto_bot && another());
 192         quit(0);
 193         /* NOTREACHED */
 194         return(0);
 195 }
 196
 197 /*
 198  * quit:
 199  *      Leave the program elegantly.
 200  */
 201 void
 202 quit(int dummy __unused)
 203 {
 204         endwin();
 205         exit(0);
 206         /* NOTREACHED */
 207 }
 208
 209 /*
 210  * another:
 211  *      See if another game is desired
 212  */
 213 bool
 214 another(void)
 215 {
 216         int y;
 217
 218 #ifdef FANCY
 219         if ((Stand_still || Pattern_roll) && !Newscore)
 220                 return true;
 221 #endif
 222
 223         if (query("Another game?")) {
 224                 if (Full_clear) {
 225                         for (y = 1; y <= Num_scores; y++) {
 226                                 move(y, 1);
 227                                 clrtoeol();
 228                         }
 229                         refresh();
 230                 }
 231                 return true;
 232         }
 233         return false;
 234 }