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visual.c revision 1.6 
      1 /*	$NetBSD: visual.c,v 1.6 2003/08/07 09:37:55 agc 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. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)visual.c	8.1 (Berkeley) 5/31/93";
     36 #else
     37 __RCSID("$NetBSD: visual.c,v 1.6 2003/08/07 09:37:55 agc Exp $");
     38 #endif
     39 #endif /* not lint */
     40 
     41 #include <stdio.h>
     42 #include "trek.h"
     43 #include "getpar.h"
     44 
     45 /*
     46 **  VISUAL SCAN
     47 **
     48 **	A visual scan is made in a particular direction of three sectors
     49 **	in the general direction specified.  This takes time, and
     50 **	Klingons can attack you, so it should be done only when sensors
     51 **	are out.
     52 */
     53 
     54 /* This struct[] has the delta x, delta y for particular directions */
     55 struct xy	Visdelta[11] =
     56 {
     57 	{ -1,	-1 },
     58 	{ -1,	 0 },
     59 	{ -1,	 1 },
     60 	{  0,	 1 },
     61 	{  1,	 1 },
     62 	{  1,	 0 },
     63 	{  1,	-1 },
     64 	{  0,	-1 },
     65 	{ -1,	-1 },
     66 	{ -1,	 0 },
     67 	{ -1,	 1 }
     68 };
     69 
     70 /*ARGSUSED*/
     71 void
     72 visual(z)
     73 	int z __attribute__((__unused__));
     74 {
     75 	int		ix, iy;
     76 	int		co;
     77 	struct xy	*v;
     78 
     79 	co = getintpar("direction");
     80 	if (co < 0 || co > 360)
     81 		return;
     82 	co = (co + 22) / 45;
     83 	v = &Visdelta[co];
     84 	ix = Ship.sectx + v->x;
     85 	iy = Ship.secty + v->y;
     86 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
     87 		co = '?';
     88 	else
     89 		co = Sect[ix][iy];
     90 	printf("%d,%d %c ", ix, iy, co);
     91 	v++;
     92 	ix = Ship.sectx + v->x;
     93 	iy = Ship.secty + v->y;
     94 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
     95 		co = '?';
     96 	else
     97 		co = Sect[ix][iy];
     98 	printf("%c ", co);
     99 	v++;
    100 	ix = Ship.sectx + v->x;
    101 	iy = Ship.secty + v->y;
    102 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
    103 		co = '?';
    104 	else
    105 		co = Sect[ix][iy];
    106 	printf("%c %d,%d\n", co, ix, iy);
    107 	Move.time = 0.05;
    108 	Move.free = 0;
    109 }
    110