backgammon/common_source/back.h

   1 /*      $NetBSD: back.h,v 1.10 1999/02/10 12:29:47 hubertf 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  *      @(#)back.h      8.1 (Berkeley) 5/31/93
  36  */
  37
  38 #include <sys/types.h>
  39 #include <sys/uio.h>
  40
  41 #include <fcntl.h>
  42 #include <signal.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <termios.h>
  47 #include <termcap.h>
  48 #include <unistd.h>
  49
  50 #define rnum(r) (random()%r)
  51 #define D0      dice[0]
  52 #define D1      dice[1]
  53 #define swap    {D0 ^= D1; D1 ^= D0; D0 ^= D1; d0 = 1-d0;}
  54
  55 /*
  56  *
  57  * Some numerical conventions:
  58  *
  59  *      Arrays have white's value in [0], red in [1].
  60  *      Numeric values which are one color or the other use
  61  *      -1 for white, 1 for red.
  62  *      Hence, white will be negative values, red positive one.
  63  *      This makes a lot of sense since white is going in decending
  64  *      order around the board, and red is ascending.
  65  *
  66  */
  67
  68 extern  const char      EXEC[];         /* object for main program */
  69 extern  const char      TEACH[];        /* object for tutorial program */
  70
  71 extern  int     pnum;           /* color of player:
  72                                         -1 = white
  73                                          1 = red
  74                                          0 = both
  75                                          2 = not yet init'ed */
  76 extern  char    args[100];      /* args passed to teachgammon and back */
  77 extern  int     acnt;           /* length of args */
  78 extern  int     aflag;          /* flag to ask for rules or instructions */
  79 extern  int     bflag;          /* flag for automatic board printing */
  80 extern  int     cflag;          /* case conversion flag */
  81 extern  int     hflag;          /* flag for cleaning screen */
  82 extern  int     mflag;          /* backgammon flag */
  83 extern  int     raflag;         /* 'roll again' flag for recovered game */
  84 extern  int     rflag;          /* recovered game flag */
  85 extern  int     tflag;          /* cursor addressing flag */
  86 extern  int     rfl;            /* saved value of rflag */
  87 extern  int     iroll;          /* special flag for inputting rolls */
  88 extern  int     board[26];      /* board:  negative values are white,
  89                                    positive are red */
  90 extern  int     dice[2];        /* value of dice */
  91 extern  int     mvlim;          /* 'move limit':  max. number of moves */
  92 extern  int     mvl;            /* working copy of mvlim */
  93 extern  int     p[5];           /* starting position of moves */
  94 extern  int     g[5];           /* ending position of moves (goals) */
  95 extern  int     h[4];           /* flag for each move if a man was hit */
  96 extern  int     cturn;          /* whose turn it currently is:
  97                                         -1 = white
  98                                          1 = red
  99                                          0 = just quitted
 100                                         -2 = white just lost
 101                                          2 = red just lost */
 102 extern  int     d0;             /* flag if dice have been reversed from
 103                                    original position */
 104 extern  int     table[6][6];    /* odds table for possible rolls */
 105 extern  int     rscore;         /* red's score */
 106 extern  int     wscore;         /* white's score */
 107 extern  int     gvalue;         /* value of game (64 max.) */
 108 extern  int     dlast;          /* who doubled last (0 = neither) */
 109 extern  int     bar;            /* position of bar for current player */
 110 extern  int     home;           /* position of home for current player */
 111 extern  int     off[2];         /* number of men off board */
 112 extern  int     *offptr;        /* pointer to off for current player */
 113 extern  int     *offopp;        /* pointer to off for opponent */
 114 extern  int     in[2];          /* number of men in inner table */
 115 extern  int     *inptr;         /* pointer to in for current player */
 116 extern  int     *inopp;         /* pointer to in for opponent */
 117
 118 extern  int     ncin;           /* number of characters in cin */
 119 extern  char    cin[100];       /* input line of current move
 120                                    (used for reconstructing input after
 121                                    a backspace) */
 122
 123 extern  const char      *const color[];
 124                                 /* colors as strings */
 125 extern  const char      *const *colorptr;       /* color of current player */
 126 extern  const char      *const *Colorptr;       /* color of current player, capitalized */
 127 extern  int     colen;          /* length of color of current player */
 128
 129 extern  struct termios  old, noech, raw;/* original tty status */
 130
 131 extern  int     curr;           /* row position of cursor */
 132 extern  int     curc;           /* column position of cursor */
 133 extern  int     begscr;         /* 'beginning' of screen
 134                                    (not including board) */
 135
 136 void    addbuf __P((int));
 137 void    backone __P((int));
 138 void    bsect __P((int, int, int, int));
 139 void    buflush __P((void));
 140 int     canhit __P((int, int));
 141 int     checkd __P((int));
 142 int     checkmove __P((int));
 143 void    clear __P((void));
 144 void    clend __P((void));
 145 void    cline __P((void));
 146 int     count __P((void));
 147 void    curmove __P((int, int));
 148 int     dotable __P((char, int));
 149 void    errexit __P((const char *));
 150 void    fancyc __P((int));
 151 void    fboard __P((void));
 152 void    fixcol __P((int, int, int, int, int));
 153 void    fixpos __P((int, int, int, int, int));
 154 void    fixtty __P((struct termios *));
 155 void    getarg __P((char ***));
 156 int     getcaps __P((const char *));
 157 void    getmove __P((void));
 158 void    getout __P((int)) __attribute__((__noreturn__));
 159 void    gwrite __P((void));
 160 void    init __P((void));
 161 int     last __P((void));
 162 int     main __P((int, char *[]));
 163 int     makmove __P((int));
 164 int     movallow __P((void));
 165 void    movback __P((int));
 166 void    moverr __P((int));
 167 int     movokay __P((int));
 168 void    newline __P((void));
 169 void    newpos __P((void));
 170 void    nexturn __P((void));
 171 void    norec __P((const char *));
 172 void    odds __P((int, int, int));
 173 void    proll __P((void));
 174 int     quit __P((void));
 175 int     readc __P((void));
 176 void    recover __P((const char *));
 177 void    refresh __P((void));
 178 void    roll __P((void));
 179 int     rsetbrd __P((void));
 180 void    save __P((int));
 181 int     text __P((const char *const *));
 182 void    wrboard __P((void));
 183 void    wrbsub __P((void));
 184 void    wrhit __P((int));
 185 void    wrint __P((int));
 186 void    writec __P((char));
 187 void    writel __P((const char *));
 188 void    wrscore __P((void));
 189 int     yorn __P((char));