diff --git a/src/Dodge/CullBox.hs b/src/Dodge/CullBox.hs
index d79782c54..817090f6f 100644
--- a/src/Dodge/CullBox.hs
+++ b/src/Dodge/CullBox.hs
@@ -1,17 +1,14 @@
 module Dodge.CullBox 
-    ( cullBox
-    , findBoundDists
+    ( makeBoundBox
+    , updateBounds
     ) 
     where
 import Dodge.Data
---import Dodge.GameRoom
 import Dodge.Base.Window
---import Dodge.Zone
 import Geometry
 import Dodge.Update.Camera
---import Shape
 
---import Data.Maybe (mapMaybe)
+import Control.Lens
 
 findBoundDists :: Configuration -> World -> (Float,Float,Float,Float)
 findBoundDists cfig w
@@ -23,12 +20,19 @@ findBoundDists cfig w
     hw = halfWidth cfig
     hh = halfHeight cfig
 
-cullBox :: Configuration -> World -> [Point2]
+makeBoundBox :: Configuration -> World -> [Point2]
 --cullBox cfig w = farWallPoints cp w
-cullBox cfig w' 
+makeBoundBox cfig w' 
     | debugOn Bound_box_screen cfig = screenPolygon cfig w'
     | otherwise = let (n,s,e,w) = f $ farWallDistDirection (_cameraCenter w') w'
             in map ((+.+ _cameraCenter w') . rotateV (_cameraRot w') ) $ rectNSWE n s w e
   where
     f (Just a,Just b,Just c,Just d) = (max 0 a,min 0 b,max 0 c,min 0 d)
     f _ = (0,0,0,0)
+
+updateBounds :: Configuration -> World -> World
+updateBounds cfig w = w
+    & boundDist .~ bdists
+    & boundBox   .~ map ( (+.+ _cameraCenter w) . rotateV (_cameraRot w) ) (rectNSWE n s w' e)
+  where
+    bdists@(n,s,e,w') = findBoundDists cfig w
diff --git a/src/Dodge/Render/Lights.hs b/src/Dodge/Render/Lights.hs
index e7a0e8091..1ad46a1b6 100644
--- a/src/Dodge/Render/Lights.hs
+++ b/src/Dodge/Render/Lights.hs
@@ -2,7 +2,7 @@ module Dodge.Render.Lights
     ( lightsToRender
     ) where
 import Dodge.Data
-import Dodge.CullBox
+--import Dodge.CullBox
 import Geometry
 
 import Data.Maybe
@@ -14,7 +14,7 @@ lightsToRender cfig w = mapMaybe getLS (IM.elems $ _lightSources w)
   where 
     getLS  = getlsparam . _lsParam
     getTLS = getlsparam . _tlsParam 
-    cbox = cullBox cfig w
+    cbox = _boundBox w
     cpos = _cameraCenter w
     getlsparam ls
         | not (pointInPolygon lpos cbox) && extraculltest = Nothing
diff --git a/src/Dodge/Render/ShapePicture.hs b/src/Dodge/Render/ShapePicture.hs
index 637196b8f..6dd5c665b 100644
--- a/src/Dodge/Render/ShapePicture.hs
+++ b/src/Dodge/Render/ShapePicture.hs
@@ -132,7 +132,7 @@ testPic _ _ = mempty
 drawBoundingBox :: Configuration -> World -> Picture
 drawBoundingBox cfig w = setLayer DebugLayer $ color green $ line $ (x:xs) ++ [x]
   where
-    (x:xs) = cullBox cfig w
+    (x:xs) = makeBoundBox cfig w
 
 clDraw :: Cloud -> Picture
 clDraw c = translate3 (_clPos c) (_clPict c c)
diff --git a/src/Dodge/Update.hs b/src/Dodge/Update.hs
index 11e1e5ed4..99460567a 100644
--- a/src/Dodge/Update.hs
+++ b/src/Dodge/Update.hs
@@ -91,7 +91,7 @@ functionalUpdate cfig w = checkEndGame
 --    . (youHammerPosition %~ moveHammerUp)
     . updateTerminal
     . updateRBList
-    . updateBoundBox cfig  -- where should this go? next to update camera?
+    . updateBounds cfig  -- where should this go? next to update camera?
     $ updateCloseObjects w
   where 
     --updatedLightSources = mapMaybe (\b -> _tlsUpdate b w b) $ _tempLightSources w
@@ -101,10 +101,6 @@ functionalUpdate cfig w = checkEndGame
         (x,y) = cloudZoneOfPoint $ stripZ $ _clPos cl
 
 
-updateBoundBox :: Configuration -> World -> World
-updateBoundBox cfig w = w & boundBox .~ cullBox cfig w
-    & boundDist .~ findBoundDists cfig w
-
 mcChooseUpdate :: Machine -> Machine -> World -> World
 mcChooseUpdate mc mc'
     | _mcHP mc > 0  = _mcUpdate mc mc'
diff --git a/src/Dodge/WorldEvent/ThingsHit.hs b/src/Dodge/WorldEvent/ThingsHit.hs
index 43a70c1ba..775824451 100644
--- a/src/Dodge/WorldEvent/ThingsHit.hs
+++ b/src/Dodge/WorldEvent/ThingsHit.hs
@@ -29,7 +29,7 @@ thingsHit
     -> Stream (Of (Point2, Either Creature Wall)) Identity ()
 thingsHit sp ep w 
     | sp == ep  = S.each []
-    | otherwise = fmap (const ()) $ S.mergeOn (dist sp . fst) crs wls
+    | otherwise = void $ S.mergeOn (dist sp . fst) crs wls
   where 
     crs :: Stream (Of (Point2, Either Creature Wall)) Identity ()
     crs = sortStreamOn (dist sp . fst)