diff --git a/libstormgames.py b/libstormgames.py
index f9887ad..737ba74 100755
--- a/libstormgames.py
+++ b/libstormgames.py
@@ -177,6 +177,7 @@ def obj_play(sounds, soundName, playerPos, objPos):
     if playerPos - objPos > 9 or playerPos - objPos < -9:
         # The sound is out of range, so do nothing.
         return
+    distance = playerPos - objPos
     angle = math.radians(distance * 5)
     left = math.sqrt(2)/2.0 * (math.cos(angle) - math.sin(angle))
     right = math.sqrt(2)/2.0 * (math.cos(angle) + math.sin(angle))
@@ -196,6 +197,7 @@ def obj_update(x, playerPos, objPos):
     if playerPos - objPos > 9 or playerPos - objPos < -9:
         obj_stop(x)
         return
+    distance = playerPos - objPos
     angle = math.radians(distance * 5)
     left = math.sqrt(2)/2.0 * (math.cos(angle) - math.sin(angle))
     right = math.sqrt(2)/2.0 * (math.cos(angle) + math.sin(angle))