186 lines
6.3 KiB
C
186 lines
6.3 KiB
C
/* $NetBSD: back.h,v 1.14 2004/01/27 20:30:28 jsm Exp $ */
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)back.h 8.1 (Berkeley) 5/31/93
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*/
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <termios.h>
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#include <termcap.h>
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#include <unistd.h>
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#define rnum(r) (random()%r)
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#define D0 dice[0]
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#define D1 dice[1]
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#define swap {D0 ^= D1; D1 ^= D0; D0 ^= D1; d0 = 1-d0;}
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/*
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*
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* Some numerical conventions:
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*
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* Arrays have white's value in [0], red in [1].
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* Numeric values which are one color or the other use
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* -1 for white, 1 for red.
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* Hence, white will be negative values, red positive one.
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* This makes a lot of sense since white is going in decending
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* order around the board, and red is ascending.
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*
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*/
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extern const char EXEC[]; /* object for main program */
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extern const char TEACH[]; /* object for tutorial program */
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extern int pnum; /* color of player:
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-1 = white
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1 = red
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0 = both
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2 = not yet init'ed */
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extern char args[100]; /* args passed to teachgammon and back */
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extern int acnt; /* length of args */
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extern int aflag; /* flag to ask for rules or instructions */
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extern int bflag; /* flag for automatic board printing */
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extern int cflag; /* case conversion flag */
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extern int hflag; /* flag for cleaning screen */
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extern int mflag; /* backgammon flag */
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extern int raflag; /* 'roll again' flag for recovered game */
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extern int rflag; /* recovered game flag */
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extern int tflag; /* cursor addressing flag */
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extern int rfl; /* saved value of rflag */
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extern int iroll; /* special flag for inputting rolls */
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extern int board[26]; /* board: negative values are white,
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positive are red */
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extern int dice[2]; /* value of dice */
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extern int mvlim; /* 'move limit': max. number of moves */
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extern int mvl; /* working copy of mvlim */
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extern int p[5]; /* starting position of moves */
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extern int g[5]; /* ending position of moves (goals) */
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extern int h[4]; /* flag for each move if a man was hit */
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extern int cturn; /* whose turn it currently is:
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-1 = white
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1 = red
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0 = just quitted
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-2 = white just lost
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2 = red just lost */
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extern int d0; /* flag if dice have been reversed from
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original position */
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extern int table[6][6]; /* odds table for possible rolls */
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extern int rscore; /* red's score */
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extern int wscore; /* white's score */
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extern int gvalue; /* value of game (64 max.) */
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extern int dlast; /* who doubled last (0 = neither) */
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extern int bar; /* position of bar for current player */
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extern int home; /* position of home for current player */
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extern int off[2]; /* number of men off board */
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extern int *offptr; /* pointer to off for current player */
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extern int *offopp; /* pointer to off for opponent */
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extern int in[2]; /* number of men in inner table */
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extern int *inptr; /* pointer to in for current player */
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extern int *inopp; /* pointer to in for opponent */
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extern int ncin; /* number of characters in cin */
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extern char cin[100]; /* input line of current move
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(used for reconstructing input after
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a backspace) */
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extern const char *const color[];
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/* colors as strings */
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extern const char *const *colorptr; /* color of current player */
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extern const char *const *Colorptr; /* color of current player, capitalized */
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extern int colen; /* length of color of current player */
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extern struct termios old, noech, bg_raw;/* original tty status */
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extern int curr; /* row position of cursor */
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extern int curc; /* column position of cursor */
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extern int begscr; /* 'beginning' of screen
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(not including board) */
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int addbuf(int);
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void backone(int);
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void bsect(int, int, int, int);
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void buflush(void);
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int canhit(int, int);
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int checkd(int);
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int checkmove(int);
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void clear(void);
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void clend(void);
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void cline(void);
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int count(void);
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void curmove(int, int);
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int dotable(char, int);
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void errexit(const char *) __attribute__((__noreturn__));
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void fancyc(int);
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void fboard(void);
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void fixcol(int, int, int, int, int);
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void fixpos(int, int, int, int, int);
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void fixtty(struct termios *);
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void getarg(char ***);
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int getcaps(const char *);
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void getmove(void);
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void getout(int) __attribute__((__noreturn__));
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void gwrite(void);
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void init(void);
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int last(void);
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int main(int, char *[]);
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int makmove(int);
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int movallow(void);
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void movback(int);
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void moverr(int);
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int movokay(int);
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void newline(void);
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void newpos(void);
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void nexturn(void);
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void norec(const char *) __attribute__((__noreturn__));
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void odds(int, int, int);
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void proll(void);
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int quit(void);
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int readc(void);
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void recover(const char *);
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void refresh(void);
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void roll(void);
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int rsetbrd(void);
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void save(int);
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int text(const char *const *);
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void wrboard(void);
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void wrbsub(void);
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void wrhit(int);
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void wrint(int);
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void writec(char);
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void writel(const char *);
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void wrscore(void);
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int yorn(char);
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