diff --git a/src/Dodge/Default.hs b/src/Dodge/Default.hs
index 023bce060..18a55e039 100644
--- a/src/Dodge/Default.hs
+++ b/src/Dodge/Default.hs
@@ -17,7 +17,6 @@ import Dodge.Default.LightSource
 import Dodge.Default.Item
 import Dodge.Data
 import Dodge.SoundLogic
-import Dodge.Wall.Delete
 import Dodge.Creature.Damage
 import Dodge.Creature.Picture
 import Geometry
@@ -193,17 +192,7 @@ defaultMachine = Machine
     , _mcName = ""
     , _mcMounts = mempty
     , _mcCloseSound = Nothing
---    , _mcTriggerCond = const True
     }
-defaultMachineUpdate :: Machine -> World -> World
-defaultMachineUpdate mc
-    | _mcHP mc < 1 = (machines %~ IM.delete mcid)
-        . deleteWallIDs (_mcWallIDs mc)
-    | otherwise = machines . ix mcid %~ ( (mcDamage .~ []) . (mcHP -~ dams) )
-  where
-    dams = sum $ map _dmAmount $ _mcDamage mc 
-    mcid = _mcID mc
-
 defaultDrawButton :: Color -> Button -> SPic
 defaultDrawButton col bt =
     ( translateSHz 15 . colorSH col $ upperPrismPoly 5 buttonGeometry
diff --git a/src/Dodge/Machine/Update.hs b/src/Dodge/Machine/Update.hs
index 154f4c04f..219b3d39f 100644
--- a/src/Dodge/Machine/Update.hs
+++ b/src/Dodge/Machine/Update.hs
@@ -113,10 +113,9 @@ mcTriggerVal mc = case mc ^. mcSensor of
     s@ProximitySensor{} -> s ^? sensToggle
     s@SensorToggleAmount{} -> Just $ (_sensAmount s) > 900
     
-
 mcPlaySound :: Machine -> World -> World
 mcPlaySound mc w = case _mcCloseSound mc of
-    Just sid | d < 200 -> soundContinueVol (1-0.005*d) (MachineSound mid) (_mcPos mc) sid (Just 2) w
+    Just sid | d < 200 -> soundContinueVol (1-0.01*max 0 (d-100)) (MachineSound mid) (_mcPos mc) sid (Just 2) w
     _ -> w
   where
     d = dist (_crPos $ you w) (_mcPos mc)
diff --git a/src/Dodge/Placement/Instance/Sensor.hs b/src/Dodge/Placement/Instance/Sensor.hs
index f21052478..315562614 100644
--- a/src/Dodge/Placement/Instance/Sensor.hs
+++ b/src/Dodge/Placement/Instance/Sensor.hs
@@ -14,52 +14,25 @@ import Shape
 
 import qualified Data.Map.Strict as M
 import Control.Lens
---import Data.Either
 
 damageSensor 
     :: DamageType -- Left gets sensed, Right does damage
     -> Float
     -> Maybe Int
---    -> (Machine -> World -> World)
     -> PlacementSpot -> Placement
-damageSensor dt wdth mtrid -- upf 
-    ps = pContID ps (PutLS $ lsPosCol (V3 0 0 30) 0.1)
+damageSensor dt wdth mtrid ps = pContID ps (PutLS $ lsPosCol (V3 0 0 30) 0.1)
     $ \lsid -> Just $ spNoID ps $ PutUsingGenParams 
-    $ \gw -> (,) gw $ PutMachine (reverse $ square wdth) 
-        (defaultMachine 
-            & mcColor .~ yellow
-            & mcMounts . at ObTrigger .~ mtrid
-            )
-        { _mcDraw = sensorSPic wdth $ _sensorCoding (_genParams gw) M.! dt
---        , _mcUpdate = \mc -> upf mc . sensorUpdate dt mc
-        , _mcSensor = SensorToggleAmount False 0
-        , _mcLSs = [lsid]
-        }
+    $ \gw -> (,) gw $ PutMachine (reverse $ square wdth) $ defaultMachine 
+        & mcColor .~ yellow
+        & mcMounts . at ObTrigger .~ mtrid
+        & mcDraw .~ sensorSPic wdth (_sensorCoding (_genParams gw) M.! dt)
+        & mcSensor .~ SensorToggleAmount False 0
+        & mcLSs .~ [lsid]
 
 lightSensor :: Float -- -> (Machine -> World -> World) 
     -> Maybe Int
     -> PlacementSpot -> Placement
 lightSensor = damageSensor LASERING
---
---sensorUpdate :: DamageType -> Machine -> World -> World
---sensorUpdate damF mc w = w & machines . ix mcid %~ upmc
---    & lightSources . ix lsid %~ upls
---  where
---    upmc = ( mcSensor . sensAmount %~ \x' -> min 1000 (max 0 (x' - 5 + newSense)) )
---        . ( mcHP -~ sum dam )
---        . (mcDamage .~ [])
---    x = _sensAmount $ _mcSensor mc
---    mcid = _mcID mc
---    lsid = head (_mcLSs mc)
---    (senseData,dam) = partitionEithers $ map (damageUsing damF) $ _mcDamage mc
---    newSense = sum senseData
---    ni = fromIntegral x / 1000
---    upls = lsParam . lsCol .~ V3 ni ni ni
---
---damageUsing :: DamageType -> Damage -> Either Int Int
---damageUsing dt dm
---    | _dmType dm == dt = Left $ _dmAmount dm
---    | otherwise = Right 0
 
 sensorSPic :: Float -> (PaletteColor,DecorationShape) -> Machine -> SPic
 sensorSPic wdth (pc,ds) mc = noPic 
diff --git a/src/Dodge/Room/LasTurret.hs b/src/Dodge/Room/LasTurret.hs
index c244b4054..15b527cea 100644
--- a/src/Dodge/Room/LasTurret.hs
+++ b/src/Dodge/Room/LasTurret.hs
@@ -10,6 +10,7 @@ import Dodge.Room.Door
 import Dodge.Room.Corridor
 import Dodge.Room.Link
 import Dodge.Room.Ngon
+import Dodge.Room.SensorDoor
 --import Dodge.Room.Foreground
 import Dodge.Wire
 import Dodge.Placement.Instance
@@ -42,13 +43,7 @@ lightSensInsideDoor outplid rm = rm
     & rmOutPmnt .~ [OutPlacement (lasSensLightAboveDoor 10 (atFstLnkOutShiftInward 100)) outplid]
 
 lasSensLightAboveDoor :: Float -> PlacementSpot -> Placement
-lasSensLightAboveDoor wth ps = extTrigLitPos 
-    (atFstLnkOutShiftBy (\(p,a) -> (p +.+ rotateV a (V2 18.5 (-2.5)), a)))
-    ( \tp -> Just $ lightSensor wth (_plMID tp) --(upf $ fromJust $ _plMID tp) 
-        ps )
-  where
-    upf trid mc w | _sensAmount (_mcSensor mc) > 900 = w & triggers . ix trid .~ const True
-        | otherwise = w
+lasSensLightAboveDoor = sensAboveDoor LASERING
 
 lightSensByDoor :: Int -> Room -> Room
 lightSensByDoor outplid rm = rm
diff --git a/src/Dodge/Room/SensorDoor.hs b/src/Dodge/Room/SensorDoor.hs
index cb9cc8adb..53ce6011b 100644
--- a/src/Dodge/Room/SensorDoor.hs
+++ b/src/Dodge/Room/SensorDoor.hs
@@ -21,8 +21,6 @@ import LensHelp
 import RandomHelp
 
 import qualified Data.Set as S
-import Data.Maybe
---import Data.Tree
 
 -- TODO fix case where the sensor created by sensInsideDoor blocks another door
 -- for roomRectAutoLinks-- make the locked door a center door?
@@ -60,11 +58,7 @@ sensorRoomRunPast dt n = do
 sensAboveDoor :: DamageType -> Float -> PlacementSpot -> Placement
 sensAboveDoor sensetype wth ps = extTrigLitPos 
     (atFstLnkOutShiftBy (\(p,a) -> (p +.+ rotateV a (V2 18.5 (-2.5)), a)))
-    ( \tp -> Just $ damageSensor sensetype wth (_plMID tp) --(upf $ fromJust $ _plMID tp) 
-        ps )
-  where
-    upf trid mc w | _sensAmount (_mcSensor mc) > 900 = w & triggers . ix trid .~ const True
-        | otherwise = w
+    ( \tp -> Just $ damageSensor sensetype wth (_plMID tp) ps )
 
 sensInsideDoor :: DamageType -> Int -> Room -> Room
 sensInsideDoor senseType outplid rm = rm