1 /*
2 * Copyright (c) 1980, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 static char sccsid[] = "@(#)visual.c 8.1 (Berkeley) 05/31/93";
10 #endif /* not lint */
11
12 # include "trek.h"
13
14 /*
15 ** VISUAL SCAN
16 **
17 ** A visual scan is made in a particular direction of three sectors
18 ** in the general direction specified. This takes time, and
19 ** Klingons can attack you, so it should be done only when sensors
20 ** are out.
21 */
22
23 /* This struct[] has the delta x, delta y for particular directions */
24 struct xy Visdelta[11] =
25 {
26 -1, -1,
27 -1, 0,
28 -1, 1,
29 0, 1,
30 1, 1,
31 1, 0,
32 1, -1,
33 0, -1,
34 -1, -1,
35 -1, 0,
36 -1, 1
37 };
38
visual()39 visual()
40 {
41 register int ix, iy;
42 int co;
43 register struct xy *v;
44
45 co = getintpar("direction");
46 if (co < 0 || co > 360)
47 return;
48 co = (co + 22) / 45;
49 v = &Visdelta[co];
50 ix = Ship.sectx + v->x;
51 iy = Ship.secty + v->y;
52 if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
53 co = '?';
54 else
55 co = Sect[ix][iy];
56 printf("%d,%d %c ", ix, iy, co);
57 v++;
58 ix = Ship.sectx + v->x;
59 iy = Ship.secty + v->y;
60 if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
61 co = '?';
62 else
63 co = Sect[ix][iy];
64 printf("%c ", co);
65 v++;
66 ix = Ship.sectx + v->x;
67 iy = Ship.secty + v->y;
68 if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
69 co = '?';
70 else
71 co = Sect[ix][iy];
72 printf("%c %d,%d\n", co, ix, iy);
73 Move.time = 0.05;
74 Move.free = 0;
75 }
76