trek/visual.c

   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 }