games/trek/visual.c

   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
  35 static 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 */
  55 static 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*/
  70 void
  71 visual(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 }