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- /*
- * Copyright (c) 1980 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that this notice is preserved and that due credit is given
- * to the University of California at Berkeley. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission. This software
- * is provided ``as is'' without express or implied warranty.
- *
- * @(#)back.h 5.2 (Berkeley) 2/16/88
- */
-
- #include <sgtty.h>
-
- #define rnum(r) (random()%r)
- #define D0 dice[0]
- #define D1 dice[1]
- #define swap {D0 ^= D1; D1 ^= D0; D0 ^= D1; d0 = 1-d0;}
-
- /*
- *
- * Some numerical conventions:
- *
- * Arrays have white's value in [0], red in [1].
- * Numeric values which are one color or the other use
- * -1 for white, 1 for red.
- * Hence, white will be negative values, red positive one.
- * This makes a lot of sense since white is going in decending
- * order around the board, and red is ascending.
- *
- */
-
- char EXEC[]; /* object for main program */
- char TEACH[]; /* object for tutorial program */
-
- int pnum; /* color of player:
- -1 = white
- 1 = red
- 0 = both
- 2 = not yet init'ed */
- char args[100]; /* args passed to teachgammon and back */
- int acnt; /* length of args */
- int aflag; /* flag to ask for rules or instructions */
- int bflag; /* flag for automatic board printing */
- int cflag; /* case conversion flag */
- int hflag; /* flag for cleaning screen */
- int mflag; /* backgammon flag */
- int raflag; /* 'roll again' flag for recovered game */
- int rflag; /* recovered game flag */
- int tflag; /* cursor addressing flag */
- int rfl; /* saved value of rflag */
- int iroll; /* special flag for inputting rolls */
- int board[26]; /* board: negative values are white,
- positive are red */
- int dice[2]; /* value of dice */
- int mvlim; /* 'move limit': max. number of moves */
- int mvl; /* working copy of mvlim */
- int p[5]; /* starting position of moves */
- int g[5]; /* ending position of moves (goals) */
- int h[4]; /* flag for each move if a man was hit */
- int cturn; /* whose turn it currently is:
- -1 = white
- 1 = red
- 0 = just quitted
- -2 = white just lost
- 2 = red just lost */
- int d0; /* flag if dice have been reversed from
- original position */
- int table[6][6]; /* odds table for possible rolls */
- int rscore; /* red's score */
- int wscore; /* white's score */
- int gvalue; /* value of game (64 max.) */
- int dlast; /* who doubled last (0 = neither) */
- int bar; /* position of bar for current player */
- int home; /* position of home for current player */
- int off[2]; /* number of men off board */
- int *offptr; /* pointer to off for current player */
- int *offopp; /* pointer to off for opponent */
- int in[2]; /* number of men in inner table */
- int *inptr; /* pointer to in for current player */
- int *inopp; /* pointer to in for opponent */
-
- int ncin; /* number of characters in cin */
- char cin[100]; /* input line of current move
- (used for reconstructing input after
- a backspace) */
-
- char *color[];
- /* colors as strings */
- char **colorptr; /* color of current player */
- char **Colorptr; /* color of current player, capitalized */
- int colen; /* length of color of current player */
-
- struct sgttyb tty; /* tty information buffer */
- int old; /* original tty status */
- int noech; /* original tty status without echo */
- int raw; /* raw tty status, no echo */
-
- int curr; /* row position of cursor */
- int curc; /* column position of cursor */
- int begscr; /* 'beginning' of screen
- (not including board) */
-
- int getout(); /* function to exit backgammon cleanly */
-