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visual.c revision 1.1 
      1 /*
      2  * Copyright (c) 1980 Regents of the University of California.
      3  * All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #ifndef lint
     35 static char sccsid[] = "@(#)visual.c	5.4 (Berkeley) 6/1/90";
     36 #endif /* not lint */
     37 
     38 # include	"trek.h"
     39 
     40 /*
     41 **  VISUAL SCAN
     42 **
     43 **	A visual scan is made in a particular direction of three sectors
     44 **	in the general direction specified.  This takes time, and
     45 **	Klingons can attack you, so it should be done only when sensors
     46 **	are out.
     47 */
     48 
     49 /* This struct[] has the delta x, delta y for particular directions */
     50 struct xy	Visdelta[11] =
     51 {
     52 	-1,	-1,
     53 	-1,	 0,
     54 	-1,	 1,
     55 	 0,	 1,
     56 	 1,	 1,
     57 	 1,	 0,
     58 	 1,	-1,
     59 	 0,	-1,
     60 	-1,	-1,
     61 	-1,	 0,
     62 	-1,	 1
     63 };
     64 
     65 visual()
     66 {
     67 	register int		ix, iy;
     68 	int			co;
     69 	register struct xy	*v;
     70 
     71 	co = getintpar("direction");
     72 	if (co < 0 || co > 360)
     73 		return;
     74 	co = (co + 22) / 45;
     75 	v = &Visdelta[co];
     76 	ix = Ship.sectx + v->x;
     77 	iy = Ship.secty + v->y;
     78 	if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
     79 		co = '?';
     80 	else
     81 		co = Sect[ix][iy];
     82 	printf("%d,%d %c ", ix, iy, co);
     83 	v++;
     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("%c ", 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 %d,%d\n", co, ix, iy);
     99 	Move.time = 0.05;
    100 	Move.free = 0;
    101 }
    102