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visual.c revision 1.5 
      1 /*	$NetBSD: visual.c,v 1.5 1999/09/08 21:45:33 jsm Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)visual.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: visual.c,v 1.5 1999/09/08 21:45:33 jsm Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include <stdio.h>
     46 #include "trek.h"
     47 #include "getpar.h"
     48 
     49 /*
     50 **  VISUAL SCAN
     51 **
     52 **	A visual scan is made in a particular direction of three sectors
     53 **	in the general direction specified.  This takes time, and
     54 **	Klingons can attack you, so it should be done only when sensors
     55 **	are out.
     56 */
     57 
     58 /* This struct[] has the delta x, delta y for particular directions */
     59 struct xy	Visdelta[11] =
     60 {
     61 	{ -1,	-1 },
     62 	{ -1,	 0 },
     63 	{ -1,	 1 },
     64 	{  0,	 1 },
     65 	{  1,	 1 },
     66 	{  1,	 0 },
     67 	{  1,	-1 },
     68 	{  0,	-1 },
     69 	{ -1,	-1 },
     70 	{ -1,	 0 },
     71 	{ -1,	 1 }
     72 };
     73 
     74 /*ARGSUSED*/
     75 void
     76 visual(z)
     77 	int z __attribute__((__unused__));
     78 {
     79 	int		ix, iy;
     80 	int		co;
     81 	struct xy	*v;
     82 
     83 	co = getintpar("direction");
     84 	if (co < 0 || co > 360)
     85 		return;
     86 	co = (co + 22) / 45;
     87 	v = &Visdelta[co];
     88 	ix = Ship.sectx + v->x;
     89 	iy = Ship.secty + v->y;
     90 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
     91 		co = '?';
     92 	else
     93 		co = Sect[ix][iy];
     94 	printf("%d,%d %c ", ix, iy, co);
     95 	v++;
     96 	ix = Ship.sectx + v->x;
     97 	iy = Ship.secty + v->y;
     98 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
     99 		co = '?';
    100 	else
    101 		co = Sect[ix][iy];
    102 	printf("%c ", co);
    103 	v++;
    104 	ix = Ship.sectx + v->x;
    105 	iy = Ship.secty + v->y;
    106 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
    107 		co = '?';
    108 	else
    109 		co = Sect[ix][iy];
    110 	printf("%c %d,%d\n", co, ix, iy);
    111 	Move.time = 0.05;
    112 	Move.free = 0;
    113 }
    114