More trig refactoring.

diff --git a/src/sst.py b/src/sst.py
index 87a057dce4a13dc39506acfcad29cc903ac7dc69..992b1c930d27014421020d4bf5ff23f4ed91576c 100644 (file)
--- a/src/sst.py
+++ b/src/sst.py
@@ -1295,14 +1295,11 @@ def torpedo(origin, bearing, dispersion, number, nburst):
            newcnd(); # we're blown out of dock 
            if game.landed or game.condition=="docked":
                return hit # Cheat if on a planet 
-           ang = track.angle + 2.5*(randreal()-0.5)
-           temp = math.fabs(math.sin(ang))
-           if math.fabs(math.cos(ang)) > temp:
-               temp = math.fabs(math.cos(ang))
-           xx = -math.sin(ang)/temp
-           yy = math.cos(ang)/temp
-           bumpto.i = int(w.i+xx+0.5)
-           bumpto.j = int(w.j+yy+0.5)
+            # In the C/FORTRAN version, dispersion was 2.5 radians, which
+            # is 143 degrees, which is almost exactly 4.8 clockface units
+            displacement = course(track.bearing+randreal(-2.4,2.4), distance=2**0.5)
+            displacement.next()
+            bumpto = displacement.sector()
            if not bumpto.valid_sector():
                return hit
            if game.quad[bumpto.i][bumpto.j]==IHBLANK:
@@ -1343,15 +1340,9 @@ def torpedo(origin, bearing, dispersion, number, nburst):
                deadkl(w, iquad, w)
                return None
            proutn(crmena(True, iquad, "sector", w))
-           # If enemy damaged but not destroyed, try to displace 
-           ang = track.angle + 2.5*(randreal()-0.5)
-           temp = math.fabs(math.sin(ang))
-           if math.fabs(math.cos(ang)) > temp:
-               temp = math.fabs(math.cos(ang))
-           xx = -math.sin(ang)/temp
-           yy = math.cos(ang)/temp
-           bumpto.i = int(w.i+xx+0.5)
-           bumpto.j = int(w.j+yy+0.5)
+            displacement = course(track.bearing+randreal(-2.4,2.4), distance=2**0.5)
+            displacement.next()
+            bumpto = displacement.sector()
             if not bumpto.valid_sector():
                prout(_(" damaged but not destroyed."))
                return