1/*	$NetBSD: visual.c,v 1.9 2009/05/24 21:44:56 dholland 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
35static char sccsid[] = "@(#)visual.c	8.1 (Berkeley) 5/31/93";
36#else
37__RCSID("$NetBSD: visual.c,v 1.9 2009/05/24 21:44:56 dholland 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 */
55static struct xy Visdelta[11] = {
56	{ -1,	-1 },
57	{ -1,	 0 },
58	{ -1,	 1 },
59	{  0,	 1 },
60	{  1,	 1 },
61	{  1,	 0 },
62	{  1,	-1 },
63	{  0,	-1 },
64	{ -1,	-1 },
65	{ -1,	 0 },
66	{ -1,	 1 }
67};
68
69/*ARGSUSED*/
70void
71visual(int z __unused)
72{
73	int		ix, iy;
74	int		co;
75	struct xy	*v;
76
77	co = getintpar("direction");
78	if (co < 0 || co > 360)
79		return;
80	co = (co + 22) / 45;
81	v = &Visdelta[co];
82	ix = Ship.sectx + v->x;
83	iy = Ship.secty + v->y;
84	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
85		co = '?';
86	else
87		co = Sect[ix][iy];
88	printf("%d,%d %c ", ix, iy, co);
89	v++;
90	ix = Ship.sectx + v->x;
91	iy = Ship.secty + v->y;
92	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
93		co = '?';
94	else
95		co = Sect[ix][iy];
96	printf("%c ", co);
97	v++;
98	ix = Ship.sectx + v->x;
99	iy = Ship.secty + v->y;
100	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
101		co = '?';
102	else
103		co = Sect[ix][iy];
104	printf("%c %d,%d\n", co, ix, iy);
105	Move.time = 0.05;
106	Move.free = 0;
107}
108