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1.1 root 1: /*
2: * Copyright (c) 1980 Regents of the University of California.
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms are permitted
6: * provided that: (1) source distributions retain this entire copyright
7: * notice and comment, and (2) distributions including binaries display
8: * the following acknowledgement: ``This product includes software
9: * developed by the University of California, Berkeley and its contributors''
10: * in the documentation or other materials provided with the distribution
11: * and in all advertising materials mentioning features or use of this
12: * software. Neither the name of the University nor the names of its
13: * contributors may be used to endorse or promote products derived
14: * from this software without specific prior written permission.
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
16: * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
17: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
18: *
19: * @(#)back.h 5.4 (Berkeley) 6/1/90
20: */
21:
22: #include <sgtty.h>
23:
24: #define rnum(r) (random()%r)
25: #define D0 dice[0]
26: #define D1 dice[1]
27: #define swap {D0 ^= D1; D1 ^= D0; D0 ^= D1; d0 = 1-d0;}
28:
29: /*
30: *
31: * Some numerical conventions:
32: *
33: * Arrays have white's value in [0], red in [1].
34: * Numeric values which are one color or the other use
35: * -1 for white, 1 for red.
36: * Hence, white will be negative values, red positive one.
37: * This makes a lot of sense since white is going in decending
38: * order around the board, and red is ascending.
39: *
40: */
41:
42: char EXEC[]; /* object for main program */
43: char TEACH[]; /* object for tutorial program */
44:
45: int pnum; /* color of player:
46: -1 = white
47: 1 = red
48: 0 = both
49: 2 = not yet init'ed */
50: char args[100]; /* args passed to teachgammon and back */
51: int acnt; /* length of args */
52: int aflag; /* flag to ask for rules or instructions */
53: int bflag; /* flag for automatic board printing */
54: int cflag; /* case conversion flag */
55: int hflag; /* flag for cleaning screen */
56: int mflag; /* backgammon flag */
57: int raflag; /* 'roll again' flag for recovered game */
58: int rflag; /* recovered game flag */
59: int tflag; /* cursor addressing flag */
60: int rfl; /* saved value of rflag */
61: int iroll; /* special flag for inputting rolls */
62: int board[26]; /* board: negative values are white,
63: positive are red */
64: int dice[2]; /* value of dice */
65: int mvlim; /* 'move limit': max. number of moves */
66: int mvl; /* working copy of mvlim */
67: int p[5]; /* starting position of moves */
68: int g[5]; /* ending position of moves (goals) */
69: int h[4]; /* flag for each move if a man was hit */
70: int cturn; /* whose turn it currently is:
71: -1 = white
72: 1 = red
73: 0 = just quitted
74: -2 = white just lost
75: 2 = red just lost */
76: int d0; /* flag if dice have been reversed from
77: original position */
78: int table[6][6]; /* odds table for possible rolls */
79: int rscore; /* red's score */
80: int wscore; /* white's score */
81: int gvalue; /* value of game (64 max.) */
82: int dlast; /* who doubled last (0 = neither) */
83: int bar; /* position of bar for current player */
84: int home; /* position of home for current player */
85: int off[2]; /* number of men off board */
86: int *offptr; /* pointer to off for current player */
87: int *offopp; /* pointer to off for opponent */
88: int in[2]; /* number of men in inner table */
89: int *inptr; /* pointer to in for current player */
90: int *inopp; /* pointer to in for opponent */
91:
92: int ncin; /* number of characters in cin */
93: char cin[100]; /* input line of current move
94: (used for reconstructing input after
95: a backspace) */
96:
97: char *color[];
98: /* colors as strings */
99: char **colorptr; /* color of current player */
100: char **Colorptr; /* color of current player, capitalized */
101: int colen; /* length of color of current player */
102:
103: struct sgttyb tty; /* tty information buffer */
104: int old; /* original tty status */
105: int noech; /* original tty status without echo */
106: int raw; /* raw tty status, no echo */
107:
108: int curr; /* row position of cursor */
109: int curc; /* column position of cursor */
110: int begscr; /* 'beginning' of screen
111: (not including board) */
112:
113: int getout(); /* function to exit backgammon cleanly */
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