monop/execute.c

   1 /*      $NetBSD: execute.c,v 1.14 2008/02/19 09:45:02 dholland 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 #if 0
  35 static char sccsid[] = "@(#)execute.c   8.1 (Berkeley) 5/31/93";
  36 #else
  37 __RCSID("$NetBSD: execute.c,v 1.14 2008/02/19 09:45:02 dholland Exp $");
  38 #endif
  39 #endif /* not lint */
  40
  41 #include "monop.ext"
  42 #include <fcntl.h>
  43 #include <stdlib.h>
  44 #include <unistd.h>
  45 #include <sys/types.h>
  46 #include <sys/stat.h>
  47 #include <sys/time.h>
  48 #include <time.h>
  49
  50 #define SEGSIZE 8192
  51
  52 typedef struct stat     STAT;
  53 typedef struct tm       TIME;
  54
  55 static char     buf[257];
  56
  57 static bool     new_play;       /* set if move on to new player         */
  58 extern void     *heapstart;
  59
  60 static void show_move(void);
  61
  62 /*
  63  *      This routine executes the given command by index number
  64  */
  65 void
  66 execute(com_num)
  67         int com_num;
  68 {
  69         new_play = FALSE;       /* new_play is true if fixing   */
  70         (*func[com_num])();
  71         notify();
  72         force_morg();
  73         if (new_play)
  74                 next_play();
  75         else if (num_doub)
  76                 printf("%s rolled doubles.  Goes again\n", cur_p->name);
  77 }
  78
  79 /*
  80  *      This routine moves a piece around.
  81  */
  82 void
  83 do_move()
  84 {
  85         int r1, r2;
  86         bool was_jail;
  87
  88         new_play = was_jail = FALSE;
  89         printf("roll is %d, %d\n", r1=roll(1, 6), r2=roll(1, 6));
  90         if (cur_p->loc == JAIL) {
  91                 was_jail++;
  92                 if (!move_jail(r1, r2)) {
  93                         new_play++;
  94                         goto ret;
  95                 }
  96         }
  97         else {
  98                 if (r1 == r2 && ++num_doub == 3) {
  99                         printf("That's 3 doubles.  You go to jail\n");
 100                         goto_jail();
 101                         new_play++;
 102                         goto ret;
 103                 }
 104                 move(r1+r2);
 105         }
 106         if (r1 != r2 || was_jail)
 107                 new_play++;
 108 ret:
 109         return;
 110 }
 111
 112 /*
 113  *      This routine moves a normal move
 114  */
 115 void
 116 move(rl)
 117         int rl;
 118 {
 119         int old_loc;
 120
 121         old_loc = cur_p->loc;
 122         cur_p->loc = (cur_p->loc + rl) % N_SQRS;
 123         if (cur_p->loc < old_loc && rl > 0) {
 124                 cur_p->money += 200;
 125                 printf("You pass %s and get $200\n", board[0].name);
 126         }
 127         show_move();
 128 }
 129
 130 /*
 131  *      This routine shows the results of a move
 132  */
 133 static void
 134 show_move()
 135 {
 136         SQUARE *sqp;
 137
 138         sqp = &board[cur_p->loc];
 139         printf("That puts you on %s\n", sqp->name);
 140         switch (sqp->type) {
 141           case SAFE:
 142                 printf("That is a safe place\n");
 143                 break;
 144           case CC:
 145                 cc();
 146                 break;
 147           case CHANCE:
 148                 chance();
 149                 break;
 150           case INC_TAX:
 151                 inc_tax();
 152                 break;
 153           case GOTO_J:
 154                 goto_jail();
 155                 break;
 156           case LUX_TAX:
 157                 lux_tax();
 158                 break;
 159           case PRPTY:
 160           case RR:
 161           case UTIL:
 162                 if (sqp->owner < 0) {
 163                         printf("That would cost $%d\n", sqp->cost);
 164                         if (getyn("Do you want to buy? ") == 0) {
 165                                 buy(player, sqp);
 166                                 cur_p->money -= sqp->cost;
 167                         }
 168                         else if (num_play > 2)
 169                                 bid();
 170                 }
 171                 else if (sqp->owner == player)
 172                         printf("You own it.\n");
 173                 else
 174                         rent(sqp);
 175         }
 176 }
 177
 178 /*
 179  *      This routine saves the current game for use at a later date
 180  */
 181 void
 182 save()
 183 {
 184         char *sp;
 185         int outf, num;
 186         time_t t;
 187         struct stat sb;
 188         char *start, *end;
 189
 190         printf("Which file do you wish to save it in? ");
 191         sp = buf;
 192         while ((*sp++ = getchar()) != '\n')
 193                 continue;
 194         *--sp = '\0';
 195
 196         /*
 197          * check for existing files, and confirm overwrite if needed
 198          */
 199
 200         if (stat(buf, &sb) > -1
 201             && getyn("File exists.  Do you wish to overwrite? ") > 0)
 202                 return;
 203
 204         if ((outf = creat(buf, 0644)) < 0) {
 205                 warn("%s", buf);
 206                 return;
 207         }
 208         printf("\"%s\" ", buf);
 209         time(&t);                       /* get current time             */
 210         strcpy(buf, ctime(&t));
 211         for (sp = buf; *sp != '\n'; sp++)
 212                 continue;
 213         *sp = '\0';
 214         start = heapstart;
 215         end = sbrk(0);
 216         while (start < end) {           /* write out entire data space */
 217                 num = start + 16 * 1024 > end ? end - start : 16 * 1024;
 218                 write(outf, start, num);
 219                 start += num;
 220         }
 221         close(outf);
 222         printf("[%s]\n", buf);
 223 }
 224
 225 /*
 226  *      This routine restores an old game from a file
 227  */
 228 void
 229 restore()
 230 {
 231         char *sp;
 232
 233         printf("Which file do you wish to restore from? ");
 234         for (sp = buf; (*sp = getchar()) != '\n'; sp++)
 235                 continue;
 236         *sp = '\0';
 237         rest_f(buf);
 238 }
 239
 240 /*
 241  *      This does the actual restoring.  It returns TRUE if the
 242  * backup was successful, else false.
 243  */
 244 int
 245 rest_f(file)
 246         const char *file;
 247 {
 248         char *sp;
 249         int inf, num;
 250         char xbuf[80];
 251         char *start, *end;
 252         STAT sbuf;
 253
 254         if ((inf = open(file, O_RDONLY)) < 0) {
 255                 warn("%s", file);
 256                 return FALSE;
 257         }
 258         printf("\"%s\" ", file);
 259         if (fstat(inf, &sbuf) < 0) {            /* get file stats       */
 260                 err(1, "%s: fstat", file);
 261         }
 262         start = heapstart;
 263         brk(end = start + sbuf.st_size);
 264         while (start < end) {           /* write out entire data space */
 265                 num = start + 16 * 1024 > end ? end - start : 16 * 1024;
 266                 read(inf, start, num);
 267                 start += num;
 268         }
 269         close(inf);
 270         strcpy(xbuf, ctime(&sbuf.st_mtime));
 271         for (sp = xbuf; *sp != '\n'; sp++)
 272                 continue;
 273         *sp = '\0';
 274         printf("[%s]\n", xbuf);
 275         return TRUE;
 276 }