1 /* 2 * Copyright (c) 1980, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)back.h 8.1 (Berkeley) 5/31/93 34 * $DragonFly: src/games/backgammon/common_source/back.h,v 1.2 2006/08/08 16:36:11 pavalos Exp $ 35 */ 36 37 #include <sgtty.h> 38 #include <stdlib.h> 39 #include <unistd.h> 40 41 #define rnum(r) (random()%r) 42 #define D0 dice[0] 43 #define D1 dice[1] 44 #define swap {D0 ^= D1; D1 ^= D0; D0 ^= D1; d0 = 1-d0;} 45 46 /* 47 * 48 * Some numerical conventions: 49 * 50 * Arrays have white's value in [0], red in [1]. 51 * Numeric values which are one color or the other use 52 * -1 for white, 1 for red. 53 * Hence, white will be negative values, red positive one. 54 * This makes a lot of sense since white is going in decending 55 * order around the board, and red is ascending. 56 * 57 */ 58 59 extern const char EXEC[]; /* object for main program */ 60 extern const char TEACH[];/* object for tutorial program */ 61 62 extern int pnum; /* color of player: 63 -1 = white 64 1 = red 65 0 = both 66 2 = not yet init'ed */ 67 extern char *args[16]; /* args passed to teachgammon and back */ 68 extern int acnt; /* number of args */ 69 extern int aflag; /* flag to ask for rules or instructions */ 70 extern int bflag; /* flag for automatic board printing */ 71 extern int cflag; /* case conversion flag */ 72 extern int hflag; /* flag for cleaning screen */ 73 extern int mflag; /* backgammon flag */ 74 extern int raflag; /* 'roll again' flag for recovered game */ 75 extern int rflag; /* recovered game flag */ 76 extern int tflag; /* cursor addressing flag */ 77 extern int rfl; /* saved value of rflag */ 78 extern int iroll; /* special flag for inputting rolls */ 79 extern int board[26]; /* board: negative values are white, 80 positive are red */ 81 extern int dice[2]; /* value of dice */ 82 extern int mvlim; /* 'move limit': max. number of moves */ 83 extern int mvl; /* working copy of mvlim */ 84 extern int p[5]; /* starting position of moves */ 85 extern int g[5]; /* ending position of moves (goals) */ 86 extern int h[4]; /* flag for each move if a man was hit */ 87 extern int cturn; /* whose turn it currently is: 88 -1 = white 89 1 = red 90 0 = just quitted 91 -2 = white just lost 92 2 = red just lost */ 93 extern int d0; /* flag if dice have been reversed from 94 original position */ 95 extern int table[6][6]; /* odds table for possible rolls */ 96 extern int rscore; /* red's score */ 97 extern int wscore; /* white's score */ 98 extern int gvalue; /* value of game (64 max.) */ 99 extern int dlast; /* who doubled last (0 = neither) */ 100 extern int bar; /* position of bar for current player */ 101 extern int home; /* position of home for current player */ 102 extern int off[2]; /* number of men off board */ 103 extern int *offptr; /* pointer to off for current player */ 104 extern int *offopp; /* pointer to off for opponent */ 105 extern int in[2]; /* number of men in inner table */ 106 extern int *inptr; /* pointer to in for current player */ 107 extern int *inopp; /* pointer to in for opponent */ 108 109 extern int ncin; /* number of characters in cin */ 110 extern char cin[100]; /* input line of current move 111 (used for reconstructing input after 112 a backspace) */ 113 114 extern const char *const color[]; 115 /* colors as strings */ 116 extern const char *const *colorptr; /* color of current player */ 117 extern const char *const *Colorptr; /* color of current player, capitalized */ 118 extern int colen; /* length of color of current player */ 119 120 extern struct sgttyb tty; /* tty information buffer */ 121 extern int old; /* original tty status */ 122 extern int noech; /* original tty status without echo */ 123 extern int raw; /* raw tty status, no echo */ 124 125 extern int curr; /* row position of cursor */ 126 extern int curc; /* column position of cursor */ 127 extern int begscr; /* 'beginning' of screen 128 (not including board) */ 129 130 int movallow(void); 131 132 void wrboard(void); 133 134 void getmove(void); 135 int movokay(int); 136 137 void fboard(void); 138 void refresh(void); 139 void curmove(int, int); 140 void newpos(void); 141 void clear(void); 142 void fancyc(char); 143 void clend(void); 144 void cline(void); 145 int getcaps(const char *); 146 147 void odds(int, int, int); 148 int count(void); 149 int canhit(int, int); 150 151 int makmove(int); 152 void moverr(int); 153 void movback(int); 154 void backone(int); 155 156 void save(int); 157 void recover(const char *); 158 159 void errexit(const char *); 160 int addbuf(int); 161 void buflush(void); 162 char readc(void); 163 void writec(char); 164 void writel(const char *); 165 void proll(void); 166 void wrint(int); 167 void gwrite(void); 168 int quit(void); 169 int yorn(char); 170 void wrhit(int); 171 void nexturn(void); 172 void getarg(int, char **); 173 void init(void); 174 void wrscore(void); 175 void fixtty(int); 176 void getout(void); /* function to exit backgammon cleanly */ 177 void roll(void); 178 179 int checkmove(int); 180 181 void dble(void); 182 int dblgood(void); 183 int freemen(int); 184 int trapped(int, int); 185 186 void move(int); 187 188 #ifdef TEACHGAMMON_TEXT 189 int text(const char *const *); 190 #else 191 void text(const char *const *); 192 #endif 193