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Fix a few bugs (e.g. snake used to miss turns); use usleep() so display
speed is correct on xterms; put snscore functionality inside snake and
make snscore a symbolic link (to be phased out); clean up formatting;
install score file properly; disable the log file by default (logging should
be done through dm).

/*	$OpenBSD: snake.h,v 1.1 1999/03/13 02:08:10 pjanzen 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.
 *
 *	@(#)snake.h	8.1 (Berkeley) 5/31/93
 */

#include <sys/types.h>
#include <sys/ioctl.h>
#include <err.h>
#include <math.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>

#define PENALTY  10	/* % penalty for invoking spacewarp	*/

#define EOT	'\004'
#define ESC	'\033'
#define LF	'\n'
#define DEL	'\177'

#define ME		'I'
#define SNAKEHEAD	'S'
#define SNAKETAIL	's'
#define TREASURE	'$'
#define GOAL		'#'

#define BSIZE	80
#define TOPN	3	/* top scores to print if you lose */

struct tbuffer {
	long t[4];
} tbuffer;

char	*CL, *UP, *DO, *ND, *BS,
	*HO, *CM,
	*TA, *LL,
	*KL, *KR, *KU, *KD,
	*TI, *TE, *KS, *KE, *VE, *VI;
int	LINES, COLUMNS;	/* physical screen size. */
int	lcnt, ccnt;	/* user's idea of screen size */
char	PC;
int	AM, BW;
char	tbuf[1024], tcapbuf[128];
char	*tgetstr(), *tgoto();
int	Klength;	/* length of KX strings */
int	chunk;		/* amount of money given at a time */
speed_t	ospeed;
#ifdef	DEBUG
#define	cashvalue	(loot-penalty)/25
#else
#define cashvalue	chunk*(loot-penalty)/25
#endif

struct point {
	int col, line;
};
struct point cursor;
struct termios orig, new;
struct point *point();
#ifdef __STDC__
void	apr(struct point *, const char *, ...);
void	pr(const char *, ...);
#else
void	apr();
void	pr();
#endif

#define	same(s1, s2)	((s1)->line == (s2)->line && (s1)->col == (s2)->col)

void snscore  __P((int, int));

void	mainloop __P((void));
void	chase    __P((struct point *, struct point *));
void	setup    __P((void));
void	drawbox  __P((void));
void	snrand   __P((struct point *));
int	post     __P((int, int));
void	flushi   __P((void));
void	spacewarp __P((int));
void	snap     __P((void));
int	stretch  __P((struct point *));
void surround __P((struct point *));
void	win      __P((struct point *));
int	pushsnake __P((void));
int	chk      __P((struct point *));
void	winnings __P((int));
void	stop    __P((int));
void	suspend  __P((void));
void	length   __P((int));
void	move     __P((struct point *));

#ifdef LOGGING
void	logit   __P((char *));
#endif

void gto	__P((struct point *));
void right	__P((struct point *));
void up	__P((void));
void down	__P((void));
void bs	__P((void));
void nd	__P((void));
void clear	__P((void));
void home	__P((void));
void ll	__P((void));
void cr	__P((void));
void pstring	__P((const char *));
void pch	__P((int));
void pchar	__P((struct point *, char));
int  outch	__P((int));
void putpad	__P((char *));
void cook	__P((void));
void raw	__P((void));
struct point	*point  __P((struct point *, int, int));
void delay	__P((int));
void getcap	__P((void));