1 /* $OpenBSD: back.h,v 1.15 2015/12/26 00:26:39 mestre 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 * @(#)back.h 8.1 (Berkeley) 5/31/93 32 */ 33 34 #include <sys/types.h> 35 #include <sys/uio.h> 36 37 #include <curses.h> 38 #include <fcntl.h> 39 #include <signal.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <term.h> 44 #include <unistd.h> 45 46 #define rnum(r) arc4random_uniform(r) 47 #define D0 dice[0] 48 #define D1 dice[1] 49 #define swap {D0 ^= D1; D1 ^= D0; D0 ^= D1; d0 = 1-d0;} 50 51 #define CIN_SIZE 40 52 53 #ifdef DEBUG 54 extern FILE *ftrace; 55 #endif 56 57 /* 58 * 59 * Some numerical conventions: 60 * 61 * Arrays have white's value in [0], red in [1]. 62 * Numeric values which are one color or the other use 63 * -1 for white, 1 for red. 64 * Hence, white will be negative values, red positive one. 65 * This makes a lot of sense since white is going in decending 66 * order around the board, and red is ascending. 67 * 68 */ 69 70 extern const char EXEC[]; /* object for main program */ 71 extern const char TEACH[]; /* object for tutorial program */ 72 73 extern int pnum; /* color of player: 74 -1 = white 75 1 = red 76 0 = both 77 2 = not yet init'ed */ 78 extern int aflag; /* flag to ask for rules or instructions */ 79 extern int cflag; /* case conversion flag */ 80 extern int hflag; /* flag for cleaning screen */ 81 extern int mflag; /* backgammon flag */ 82 extern int raflag; /* 'roll again' flag for recovered game */ 83 extern int rflag; /* recovered game flag */ 84 extern int dflag; /* disable doubling flag */ 85 extern int rfl; /* saved value of rflag */ 86 extern int iroll; /* special flag for inputting rolls */ 87 extern int board[26]; /* board: negative values are white, 88 positive are red */ 89 extern int dice[2]; /* value of dice */ 90 extern int mvlim; /* 'move limit': max. number of moves */ 91 extern int mvl; /* working copy of mvlim */ 92 extern int p[5]; /* starting position of moves */ 93 extern int g[5]; /* ending position of moves (goals) */ 94 extern int h[4]; /* flag for each move if a man was hit */ 95 extern int cturn; /* whose turn it currently is: 96 -1 = white 97 1 = red 98 0 = just quit 99 -2 = white just lost 100 2 = red just lost */ 101 extern int d0; /* flag if dice have been reversed from 102 original position */ 103 extern int table[6][6]; /* odds table for possible rolls */ 104 extern int rscore; /* red's score */ 105 extern int wscore; /* white's score */ 106 extern int gvalue; /* value of game (64 max.) */ 107 extern int dlast; /* who doubled last (0 = neither) */ 108 extern int bar; /* position of bar for current player */ 109 extern int home; /* position of home for current player */ 110 extern int off[2]; /* number of men off board */ 111 extern int *offptr; /* pointer to off for current player */ 112 extern int *offopp; /* pointer to off for opponent */ 113 extern int in[2]; /* number of men in inner table */ 114 extern int *inptr; /* pointer to in for current player */ 115 extern int *inopp; /* pointer to in for opponent */ 116 117 extern int ncin; /* number of characters in cin */ 118 extern char cin[CIN_SIZE]; /* input line of current move 119 (used for reconstructing input after 120 a backspace) */ 121 122 extern const char *const color[]; /* colors as strings */ 123 extern const char *const *colorptr; /* color of current player */ 124 extern const char *const *Colorptr; /* color of current player, 125 * capitalized */ 126 extern int colen; /* length of color of current player */ 127 128 extern int begscr; /* 'beginning' of screen 129 (not including board) */ 130 131 int addbuf(int); 132 void backone(int); 133 void bsect(int, int, int, int); 134 int canhit(int, int); 135 int checkd(int); 136 int checkmove(int); 137 int count(void); 138 int dotable(char, int); 139 void errexit(const char *); 140 void fboard(void); 141 void fixcol(int, int, int, int, int); 142 void fixpos(int, int, int, int, int); 143 void getarg(int, char **); 144 void getmove(void); 145 __dead void getout(int); /* function to exit backgammon cleanly */ 146 void gwrite(void); 147 void init(void); 148 void initcurses(void); 149 int last(void); 150 int makmove(int); 151 int movallow(void); 152 void movback(int); 153 void moveplayers(void); 154 void moverr(int); 155 int movokay(int); 156 void nexturn(void); 157 void norec(const char *); 158 void odds(int, int, int); 159 void proll(void); 160 int quit(void); 161 int readc(void); 162 void recover(const char *); 163 void roll(void); 164 int rsetbrd(void); 165 void save(int); 166 int text(const char *const *); 167 void wrboard(void); 168 void wrhit(int); 169 void wrscore(void); 170 int yorn(char); 171