date and time created 83/03/23 15:02:04 by mckusick

SCCS-vsn: games/trek/visual.c 4.1

diff --git a/usr/src/games/trek/visual.c b/usr/src/games/trek/visual.c
new file mode 100644 (file)
index 0000000..fe75aa0
--- /dev/null
+++ b/usr/src/games/trek/visual.c
@@ -0,0 +1,68 @@
+#ifndef lint
+static char sccsid[] = "@(#)visual.c   4.1     (Berkeley)      %G%";
+#endif not lint
+
+# include      "trek.h"
+
+/*
+**  VISUAL SCAN
+**
+**     A visual scan is made in a particular direction of three sectors
+**     in the general direction specified.  This takes time, and
+**     Klingons can attack you, so it should be done only when sensors
+**     are out.
+*/
+
+/* This struct[] has the delta x, delta y for particular directions */
+struct xy      Visdelta[11]
+{
+       -1,     -1,
+       -1,      0,
+       -1,      1,
+        0,      1,
+        1,      1,
+        1,      0,
+        1,     -1,
+        0,     -1,
+       -1,     -1,
+       -1,      0,
+       -1,      1
+};
+
+visual()
+{
+       register int            ix, iy;
+       int                     co;
+       register struct xy      *v;
+
+       co = getintpar("direction");
+       if (co < 0 || co > 360)
+               return;
+       co = (co + 22) / 45;
+       v = &Visdelta[co];
+       ix = Ship.sectx + v->x;
+       iy = Ship.secty + v->y;
+       if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
+               co = '?';
+       else
+               co = Sect[ix][iy];
+       printf("%d,%d %c ", ix, iy, co);
+       v++;
+       ix = Ship.sectx + v->x;
+       iy = Ship.secty + v->y;
+       if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
+               co = '?';
+       else
+               co = Sect[ix][iy];
+       printf("%c ", co);
+       v++;
+       ix = Ship.sectx + v->x;
+       iy = Ship.secty + v->y;
+       if (ix < 0 || ix >= NSECTS || iy < 0 || iy >= NSECTS)
+               co = '?';
+       else
+               co = Sect[ix][iy];
+       printf("%c %d,%d\n", co, ix, iy);
+       Move.time = 0.05;
+       Move.free = 0;
+}