diff --git a/src/Dodge/Wall/Damage.hs b/src/Dodge/Wall/Damage.hs
index 751465836..f6defc5ff 100644
--- a/src/Dodge/Wall/Damage.hs
+++ b/src/Dodge/Wall/Damage.hs
@@ -11,11 +11,11 @@ import Dodge.Wall.Dust
 import Dodge.Particle.Spark
 import Geometry
 import Color
+import LensHelp
 
-import Control.Lens
 damageWall :: DamageType -> Wall -> World -> World
 damageWall dt wl = case _wlStructure wl of
-    MachinePart mcid -> machines . ix mcid . mcDamage %~ (dt :)
+    MachinePart mcid -> wallEff dt wl . (machines . ix mcid . mcDamage .:~ dt)
     BlockPart blid   -> wallEff dt wl . (blocks . ix blid %~ damageBlockWith dt)
     CreaturePart crid f -> f dt wl crid
     _   -> wallEff dt wl
diff --git a/src/Dodge/Wall/Dust.hs b/src/Dodge/Wall/Dust.hs
index bdca915f1..e719eb8c8 100644
--- a/src/Dodge/Wall/Dust.hs
+++ b/src/Dodge/Wall/Dust.hs
@@ -5,7 +5,7 @@ import Geometry
 import Control.Lens
 
 wlDustAt :: Wall -> Point2 -> World -> World
-wlDustAt wl p = smokeCloudAt dustcol 20 200 1 (addZ 20 p)
+wlDustAt wl = smokeCloudAt dustcol 20 200 1 . addZ 20
   where
     dustcol = _wlColor wl & _4 .~ 1
     
diff --git a/src/Dodge/Wall/Zone.hs b/src/Dodge/Wall/Zone.hs
index 408acf5c8..a292f3a31 100644
--- a/src/Dodge/Wall/Zone.hs
+++ b/src/Dodge/Wall/Zone.hs
@@ -10,7 +10,7 @@ import Data.Foldable
 
 zoneOfWall :: Wall -> [(Int,Int)]
 zoneOfWall wl 
-    | uncurry dist wlline <= 2*zoneSize =  [zoneOfPoint $ uncurry pHalf wlline ]
+    | uncurry dist wlline <= 2*zoneSize = [zoneOfPoint $ uncurry pHalf wlline ]
     | otherwise = map zoneOfPoint $ uncurry (divideLine zoneSize) wlline
   where
     wlline = _wlLine wl
diff --git a/src/Dodge/WorldEvent/Cloud.hs b/src/Dodge/WorldEvent/Cloud.hs
index 87ff179bd..25e0fb9c3 100644
--- a/src/Dodge/WorldEvent/Cloud.hs
+++ b/src/Dodge/WorldEvent/Cloud.hs
@@ -11,8 +11,9 @@ import Dodge.Data
 import Dodge.Base
 import Geometry.Data
 import Picture
+import LensHelp
 
-import Control.Lens
+--import Control.Lens
 import System.Random
 
 makeCloudAt 
@@ -23,18 +24,16 @@ makeCloudAt
     -> Point3   -- start position
     -> World 
     -> World
-makeCloudAt drawFunc rad t alt p = clouds %~ (theCloud :)
-  where 
-    theCloud = Cloud 
-        { _clPos = p
-        , _clVel = V3 0 0 0
-        , _clPict = drawFunc
-        , _clRad = rad
-        , _clAlt = alt
-        , _clTimer = t
-        , _clType = SmokeCloud
-        , _clEffect = const id
-        }
+makeCloudAt drawFunc rad t alt p = clouds .:~ Cloud 
+    { _clPos = p
+    , _clVel = V3 0 0 0
+    , _clPict = drawFunc
+    , _clRad = rad
+    , _clAlt = alt
+    , _clTimer = t
+    , _clType = SmokeCloud
+    , _clEffect = const id
+    }
 
 smokeCloudAt 
     :: Color  
diff --git a/src/Dodge/WorldEvent/Explosion.hs b/src/Dodge/WorldEvent/Explosion.hs
index f8814028c..032c1ed8c 100644
--- a/src/Dodge/WorldEvent/Explosion.hs
+++ b/src/Dodge/WorldEvent/Explosion.hs
@@ -34,9 +34,8 @@ makePoisonExplosionAt
     -> World
 makePoisonExplosionAt p w 
     = soundMultiFrom [Explosion 0,Explosion 1] p bangS Nothing
-    $ foldr (makeGasCloud p) w vels
-  where 
-    vels = replicateM 25 (randInCirc 2) & evalState $ _randGen w
+    $ foldr (makeGasCloud p) w 
+    $ replicateM 25 (randInCirc 2) & evalState $ _randGen w
 -- just change the number after replicateM to get more or less clouds
 -- suggested change: use random positions, offset from p, rather than velocities
 -- so, p +.+ randomOffset
@@ -93,4 +92,3 @@ makeExplosionAt p w
     newFs = zipWith5 mF fPs zs (fmap (3 *.*) fVs') sizes times
     addFlames w' = foldr ($) w' newFs
     pushAgainstWalls q = maybe q (uncurry (+.+)) $ reflectPointWalls p q $ wallsNearPoint q w
-
diff --git a/src/Dodge/WorldEvent/HelperParticle.hs b/src/Dodge/WorldEvent/HelperParticle.hs
index ab99623bd..e922a59ae 100644
--- a/src/Dodge/WorldEvent/HelperParticle.hs
+++ b/src/Dodge/WorldEvent/HelperParticle.hs
@@ -1,8 +1,7 @@
 {- Helper functions for particles.  -}
 module Dodge.WorldEvent.HelperParticle
     ( ptSimpleTime
-    )
-    where
+    ) where
 import Dodge.Data
 
 {- A simple timer update for particles.  -}
diff --git a/src/Dodge/WorldEvent/HitEffect.hs b/src/Dodge/WorldEvent/HitEffect.hs
index df721cae7..020365773 100644
--- a/src/Dodge/WorldEvent/HitEffect.hs
+++ b/src/Dodge/WorldEvent/HitEffect.hs
@@ -43,7 +43,7 @@ killBulletUpdate :: World -> Particle -> (World,Maybe Particle)
 killBulletUpdate w pt 
     | _ptTimer pt <= 0 = (w,Nothing)
     | otherwise = (w
-        ,Just $ pt & ptTimer -~ 1
+        , Just $ pt & ptTimer -~ 1
             & ptTrail %~ (\(x:xs) -> x:x:xs)
         )
 
@@ -55,11 +55,11 @@ penWalls
     -> World 
     -> (World, Maybe Particle)
 penWalls crEff wlEff pt hitThings w = case hitThings of
-        []              -> (              w, mvPt pt)
-        ((p,Left cr):_) -> (crEff pt p cr w, destroyAt p pt)
-        ((p,Right wl):hs) | _wlFireThrough wl 
-                        -> first (wlEff pt p wl) $ penWalls crEff wlEff pt hs w
-        ((p,Right wl):_) -> (wlEff pt p wl w, destroyAt p pt)
+    []              -> (              w, mvPt pt)
+    ((p,Left cr):_) -> (crEff pt p cr w, destroyAt p pt)
+    ((p,Right wl):hs) | _wlFireThrough wl 
+                    -> first (wlEff pt p wl) $ penWalls crEff wlEff pt hs w
+    ((p,Right wl):_) -> (wlEff pt p wl w, destroyAt p pt)
 
 doFlameDam :: Int -> Particle -> Point2 -> Creature -> World -> World
 doFlameDam amount pt p cr = creatures . ix (_crID cr) . crState . crDamage .:~