1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/* $NetBSD: back.h,v 1.12 1999/10/04 23:26:59 lukem Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)back.h 8.1 (Berkeley) 5/31/93
*/
#include <sys/types.h>
#include <sys/uio.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <termcap.h>
#include <unistd.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.
*
*/
extern const char EXEC[]; /* object for main program */
extern const char TEACH[]; /* object for tutorial program */
extern int pnum; /* color of player:
-1 = white
1 = red
0 = both
2 = not yet init'ed */
extern char args[100]; /* args passed to teachgammon and back */
extern int acnt; /* length of args */
extern int aflag; /* flag to ask for rules or instructions */
extern int bflag; /* flag for automatic board printing */
extern int cflag; /* case conversion flag */
extern int hflag; /* flag for cleaning screen */
extern int mflag; /* backgammon flag */
extern int raflag; /* 'roll again' flag for recovered game */
extern int rflag; /* recovered game flag */
extern int tflag; /* cursor addressing flag */
extern int rfl; /* saved value of rflag */
extern int iroll; /* special flag for inputting rolls */
extern int board[26]; /* board: negative values are white,
positive are red */
extern int dice[2]; /* value of dice */
extern int mvlim; /* 'move limit': max. number of moves */
extern int mvl; /* working copy of mvlim */
extern int p[5]; /* starting position of moves */
extern int g[5]; /* ending position of moves (goals) */
extern int h[4]; /* flag for each move if a man was hit */
extern int cturn; /* whose turn it currently is:
-1 = white
1 = red
0 = just quitted
-2 = white just lost
2 = red just lost */
extern int d0; /* flag if dice have been reversed from
original position */
extern int table[6][6]; /* odds table for possible rolls */
extern int rscore; /* red's score */
extern int wscore; /* white's score */
extern int gvalue; /* value of game (64 max.) */
extern int dlast; /* who doubled last (0 = neither) */
extern int bar; /* position of bar for current player */
extern int home; /* position of home for current player */
extern int off[2]; /* number of men off board */
extern int *offptr; /* pointer to off for current player */
extern int *offopp; /* pointer to off for opponent */
extern int in[2]; /* number of men in inner table */
extern int *inptr; /* pointer to in for current player */
extern int *inopp; /* pointer to in for opponent */
extern int ncin; /* number of characters in cin */
extern char cin[100]; /* input line of current move
(used for reconstructing input after
a backspace) */
extern const char *const color[];
/* colors as strings */
extern const char *const *colorptr; /* color of current player */
extern const char *const *Colorptr; /* color of current player, capitalized */
extern int colen; /* length of color of current player */
extern struct termios old, noech, raw;/* original tty status */
extern int curr; /* row position of cursor */
extern int curc; /* column position of cursor */
extern int begscr; /* 'beginning' of screen
(not including board) */
int addbuf __P((int));
void backone __P((int));
void bsect __P((int, int, int, int));
void buflush __P((void));
int canhit __P((int, int));
int checkd __P((int));
int checkmove __P((int));
void clear __P((void));
void clend __P((void));
void cline __P((void));
int count __P((void));
void curmove __P((int, int));
int dotable __P((char, int));
void errexit __P((const char *)) __attribute__((__noreturn__));
void fancyc __P((int));
void fboard __P((void));
void fixcol __P((int, int, int, int, int));
void fixpos __P((int, int, int, int, int));
void fixtty __P((struct termios *));
void getarg __P((char ***));
int getcaps __P((const char *));
void getmove __P((void));
void getout __P((int)) __attribute__((__noreturn__));
void gwrite __P((void));
void init __P((void));
int last __P((void));
int main __P((int, char *[]));
int makmove __P((int));
int movallow __P((void));
void movback __P((int));
void moverr __P((int));
int movokay __P((int));
void newline __P((void));
void newpos __P((void));
void nexturn __P((void));
void norec __P((const char *)) __attribute__((__noreturn__));
void odds __P((int, int, int));
void proll __P((void));
int quit __P((void));
int readc __P((void));
void recover __P((const char *));
void refresh __P((void));
void roll __P((void));
int rsetbrd __P((void));
void save __P((int));
int text __P((const char *const *));
void wrboard __P((void));
void wrbsub __P((void));
void wrhit __P((int));
void wrint __P((int));
void writec __P((char));
void writel __P((const char *));
void wrscore __P((void));
int yorn __P((char));
|
