diff --git a/src/Dodge/Block.hs b/src/Dodge/Block.hs
index 0aa60b983..62fea7114 100644
--- a/src/Dodge/Block.hs
+++ b/src/Dodge/Block.hs
@@ -1,22 +1,25 @@
+{-# LANGUAGE LambdaCase #-}
+
 module Dodge.Block (
     splinterBlock,
     destroyBlock,
 ) where
 
-import Dodge.Zoning.Wall
-import Dodge.Base.Collide
-import Control.Monad
-import Dodge.Path
+import qualified Data.Set as S
 import Control.Lens
+import Control.Monad
 import Data.Foldable
 import qualified Data.IntSet as IS
 import Data.Maybe
+import Dodge.Base.Collide
 import Dodge.Block.Debris
 import Dodge.Data.World
 import Dodge.Material.Sound
+import Dodge.Path
 import Dodge.Wall.Delete
 import Dodge.Wall.Zone
 import Dodge.WorldEvent.Sound
+import Dodge.Zoning.Wall
 import qualified IntMapHelp as IM
 
 splinterBlock :: Block -> World -> World
@@ -53,29 +56,29 @@ destroyBlock bl w =
         & deleteWallIDs wlids
         & maybeClearPaths (_blObstructs bl) -- must happen after the walls are deleted
         & cWorld . lWorld . blocks %~ IM.delete (_blID bl)
---        & muchWlDustAt awl (_blPos bl)
---        & flip (foldl' $ flip (muchWlDustAt awl)) (map (pos +.+) ps)
   where
+    --        & muchWlDustAt awl (_blPos bl)
+    --        & flip (foldl' $ flip (muchWlDustAt awl)) (map (pos +.+) ps)
+
     wlids = _blWallIDs bl
+
 --    awl = w ^?! cWorld . lWorld . walls . ix (IS.findMin wlids)
 --    pos = fst . _wlLine $ awl
 --    ps = replicateM 25 (randInCirc 20) & evalState $ _randGen w
 
 -- this does not handle eg doors blocking the path as well
-maybeClearPaths :: [(Int,Int)] -> World -> World
+maybeClearPaths :: [(Int, Int)] -> World -> World
 maybeClearPaths ps w = foldl' maybeClearPath w ps
 
-maybeClearPath :: World -> (Int,Int) -> World
-maybeClearPath w (i,j) = fromMaybe w $ do
+maybeClearPath :: World -> (Int, Int) -> World
+maybeClearPath w (i, j) = fromMaybe w $ do
     x <- getNodePos i w
     y <- getNodePos j w
     guard $ null $ overlapSegWalls x y $ wlsNearSeg x y w
-    return $ w & cWorld . incGraph %~ updateEdge f (i,j) 
-  where
-    f = at BlockObstacle .~ Nothing
+    return $ w & cWorld . incGraph %~ updateEdge (S.intersection (S.singleton ChasmObstacle)) (i, j)
+
 ----    | not . null $ overlapSegWalls (_peStart pe) (_peEnd pe) $ wlsNearSeg (_peStart pe) (_peEnd pe) w =
 ----        w
 ----    | otherwise =
 ----        w
 ----            & cWorld . pathGraph %~ FGL.insEdge (x, y, pe & peObstacles .~ mempty) . FGL.delEdge (x, y)
-
diff --git a/src/Dodge/Data/GenWorld.hs b/src/Dodge/Data/GenWorld.hs
index 706b2fe78..9ef7ef654 100644
--- a/src/Dodge/Data/GenWorld.hs
+++ b/src/Dodge/Data/GenWorld.hs
@@ -53,9 +53,9 @@ data PSType
         , _putEndPoint :: Point2
         }
     | PutWall {_pwPoly :: [Point2], _pwWall :: Wall}
-    | PutSlideDr Door Wall EdgeObstacle Float Point2 Point2
+    | PutSlideDr Door Wall (S.Set EdgeObstacle) Float Point2 Point2
 --    | PutDoor Color EdgeObstacle WdBl [(Point2, Point2)]
-    | PutDoor Color EdgeObstacle WdBl Float Point2A Point2A -- [(Point2, Point2)]
+    | PutDoor Color (S.Set EdgeObstacle) WdBl Float Point2A Point2A -- [(Point2, Point2)]
     | RandPS (State StdGen PSType)
     | PutForeground ForegroundShape
     | PutWorldUpdate (Int -> PlacementSpot -> GenWorld -> GenWorld)
diff --git a/src/Dodge/Data/PathGraph.hs b/src/Dodge/Data/PathGraph.hs
index 4bfc1a362..55938770d 100644
--- a/src/Dodge/Data/PathGraph.hs
+++ b/src/Dodge/Data/PathGraph.hs
@@ -8,12 +8,13 @@ The warnings have been disabled.
 -}
 module Dodge.Data.PathGraph where
 
+import Dodge.Data.Wall.Structure
 import Control.Lens
 import Data.Aeson
 import Data.Aeson.TH
 import Data.Graph.Inductive
 --import Data.Map.Strict (Map)
-import qualified Data.Set as Set
+import qualified Data.Set as S
 --import Geometry.Data
 
 --data PathGraph = PathGraph
@@ -41,17 +42,17 @@ import qualified Data.Set as Set
 
 data SimpleEdge = SimpleEdge
     { _seDist :: Float
-    , _seObstacles :: Set.Set EdgeObstacle
+    , _seObstacles :: S.Set EdgeObstacle
     }
     deriving (Eq, Ord, Show, Read) --Generic, Flat)
 
 data EdgeObstacle
-    = BlockObstacle
-    | DoorObstacle
-    | AutoDoorObstacle
-    | WallObstacle
+    = WallObstacle WallFlag
     | ChasmObstacle
-    deriving (Eq, Ord, Show, Bounded, Enum, Read) --Generic, Flat)
+    deriving (Eq, Ord, Show, Read) --Generic, Flat)
+
+switchWallObs :: S.Set EdgeObstacle
+switchWallObs = S.fromList $ WallObstacle <$> [WallBlockVisibility,WallNotAutoOpen]
 
 --instance (ToJSON a, ToJSON b) => ToJSON (Gr a b) where
 --    toEncoding = genericToEncoding defaultOptions
diff --git a/src/Dodge/Data/Wall.hs b/src/Dodge/Data/Wall.hs
index 27578f051..b866812af 100644
--- a/src/Dodge/Data/Wall.hs
+++ b/src/Dodge/Data/Wall.hs
@@ -14,12 +14,14 @@ import Data.Aeson.TH
 import Dodge.Data.Material
 import Dodge.Data.Wall.Structure
 import Geometry
+import qualified Data.Set as S
 
 data Wall = Wall
     { _wlLine :: (Point2, Point2)
     , _wlID :: Int
     , _wlColor :: Color
     , _wlOpacity :: Opacity
+    , _wlPathFlag :: S.Set WallFlag
     , _wlPathable :: Bool
     , _wlPenetrable :: Bool
     , _wlBouncy :: Bool
diff --git a/src/Dodge/Data/Wall/Structure.hs b/src/Dodge/Data/Wall/Structure.hs
index 1a14a60ec..3dc367c1a 100644
--- a/src/Dodge/Data/Wall/Structure.hs
+++ b/src/Dodge/Data/Wall/Structure.hs
@@ -1,8 +1,8 @@
 {-# LANGUAGE StrictData #-}
 {-# LANGUAGE TemplateHaskell #-}
 
-module Dodge.Data.Wall.Structure
- where
+module Dodge.Data.Wall.Structure where
+
 import Control.Lens
 import Data.Aeson
 import Data.Aeson.TH
@@ -12,8 +12,15 @@ data WallStructure
     | DoorPart {_wsDoor :: Int}
     | MachinePart {_wsMachine :: Int}
     | BlockPart {_wsBlock :: Int}
-    | CreaturePart { _wlStCreature :: Int }
+    | CreaturePart {_wlStCreature :: Int}
     deriving (Eq, Ord, Show, Read) --Generic, Flat)
 
+data WallFlag
+    = WallBlockVisibility
+    | WallNotAutoOpen
+    | WallNotDestrucable
+    deriving (Eq, Ord, Show, Read, Enum, Bounded) --Generic, Flat)
+
 makeLenses ''WallStructure
 deriveJSON defaultOptions ''WallStructure
+deriveJSON defaultOptions ''WallFlag
diff --git a/src/Dodge/Debug/Picture.hs b/src/Dodge/Debug/Picture.hs
index 703aea359..8b6d96efc 100644
--- a/src/Dodge/Debug/Picture.hs
+++ b/src/Dodge/Debug/Picture.hs
@@ -268,10 +268,9 @@ drawPathEdge x y pe = setLayer DebugLayer $ multiArrow x y green (S.map obstacle
 
 obstacleColor :: EdgeObstacle -> Color
 obstacleColor eo = case eo of
-    WallObstacle -> red
-    DoorObstacle -> orange
-    AutoDoorObstacle -> yellow
-    BlockObstacle -> blue
+    WallObstacle WallNotAutoOpen -> red
+    WallObstacle WallBlockVisibility -> orange
+    WallObstacle WallNotDestrucable -> yellow
     ChasmObstacle -> cyan
 
 drawFarWallDetect :: World -> Picture
@@ -402,8 +401,7 @@ drawWlIDs w = setLayer FixedCoordLayer $ foldMap f (w ^. cWorld . lWorld . walls
         p = worldPosToScreen (w ^. wCam) $ 0.5 *.* uncurry (+.+) (_wlLine wl)
 
 drawPathing :: Config -> World -> Picture
-drawPathing cfig w =
-    setLayer DebugLayer $ ifoldMap f $ w ^. cWorld . incGraph
+drawPathing cfig w = setLayer DebugLayer $ ifoldMap f $ w ^. cWorld . incGraph
   where
     inodes = w ^. cWorld . incNode
     f i = foldMap (g i)
diff --git a/src/Dodge/Default/Wall.hs b/src/Dodge/Default/Wall.hs
index 18fb7c255..2198e0e51 100644
--- a/src/Dodge/Default/Wall.hs
+++ b/src/Dodge/Default/Wall.hs
@@ -8,6 +8,7 @@ module Dodge.Default.Wall (
     defaultDirtWall,
 ) where
 
+import qualified Data.Set as S
 import Control.Lens
 import Dodge.Data.Wall
 import Geometry.Data
@@ -20,6 +21,8 @@ defaultWall =
         { _wlLine = (V2 0 0, V2 50 0)
         , _wlID = 0
         , _wlColor = greyN 0.6
+        , _wlPathFlag = S.fromList [WallBlockVisibility
+                , WallNotAutoOpen, WallNotDestrucable]
         , --, _wlOpacity = Opaque 11
           _wlOpacity = Opaque 11
         , _wlPathable = False
@@ -38,6 +41,7 @@ defaultWall =
 
 defaultDoorWall :: Wall
 defaultDoorWall = defaultWall { _wlMaterial = Metal }
+    & wlPathFlag . at WallNotDestrucable .~ Nothing
 
 {- Indestructible see-through wall.  -}
 defaultCrystalWall :: Wall
diff --git a/src/Dodge/Path.hs b/src/Dodge/Path.hs
index 57f9d9dbe..92e478de9 100644
--- a/src/Dodge/Path.hs
+++ b/src/Dodge/Path.hs
@@ -15,6 +15,7 @@ module Dodge.Path (
     getEdgesCrossing,
 ) where
 
+import qualified Data.Set as S
 import qualified Algorithm.Search as AS
 import Control.Lens
 --import Data.Bifunctor
@@ -82,7 +83,7 @@ makePathBetween :: Point2 -> Point2 -> World -> Maybe [Int]
 makePathBetween = makePathUsing $ not . pathEdgeObstructed
 
 pathEdgeObstructed :: Set.Set EdgeObstacle -> Bool
-pathEdgeObstructed pe = any (`Set.member` pe) [DoorObstacle, BlockObstacle, ChasmObstacle]
+pathEdgeObstructed pe = any (`Set.member` pe) [WallObstacle WallNotAutoOpen, ChasmObstacle]
 
 walkableNodeNear :: World -> Point2 -> Maybe Int
 {-# INLINE walkableNodeNear #-}
@@ -129,17 +130,17 @@ pairsToIncGraph pairs =
     ps = Set.toList $ Set.map fst pairs <> Set.map snd pairs
 
 obstructPathsCrossing ::
-    EdgeObstacle ->
+    S.Set EdgeObstacle ->
     Point2 ->
     Point2 ->
     World ->
     (World, [(Int,Int)])
-obstructPathsCrossing obstacletype s e w =
+obstructPathsCrossing obs s e w =
     ( w & cWorld . incGraph %~ updateincedges
     , inces
     )
   where
-    updateincedge = flip $ updateEdge (at obstacletype ?~ ()) 
+    updateincedge = flip $ updateEdge (S.union obs) 
     updateincedges gr = foldl' updateincedge gr inces
     inces = filter inedgecrosses $ nearSeg peZoneSize _incEdgeZoning s e w
     inedgecrosses (i, j) = isJust $ intersectSegSeg s e (f i) (f j)
diff --git a/src/Dodge/Placement/Instance/Door.hs b/src/Dodge/Placement/Instance/Door.hs
index 076cd79a0..098d36457 100644
--- a/src/Dodge/Placement/Instance/Door.hs
+++ b/src/Dodge/Placement/Instance/Door.hs
@@ -5,6 +5,7 @@ module Dodge.Placement.Instance.Door (
     switchDoor, -- not used 9/3/22
 ) where
 
+import qualified Data.Set as S
 import Color
 import Control.Lens
 import Dodge.Data.CreatureEffect
@@ -14,12 +15,13 @@ import Dodge.LevelGen.PlacementHelper
 import Dodge.LevelGen.Switch
 import Geometry
 
-putDoubleDoor :: EdgeObstacle -> Wall -> WdBl -> Point2 -> Point2 -> Float -> Placement
+putDoubleDoor :: S.Set EdgeObstacle 
+    -> Wall -> WdBl -> Point2 -> Point2 -> Float -> Placement
 putDoubleDoor eo wl cond a b speed =
     putDoubleDoorThen eo wl cond 1 a b speed (const $ const Nothing)
 
 putDoubleDoorThen ::
-    EdgeObstacle ->
+    S.Set EdgeObstacle ->
     Wall ->
     WdBl ->
     Float ->
@@ -37,7 +39,7 @@ putDoubleDoorThen eo wl cond soff a b speed cont =
     half = 0.5 *.* (a +.+ b)
 
 doorBetween ::
-    EdgeObstacle ->
+    S.Set EdgeObstacle ->
     Wall ->
     WdBl ->
     Float ->
@@ -70,7 +72,7 @@ divideDoorPane mid wl cond soff speed ppairs g = case ppairs of
     (p : ps) -> ptCont (adoor p) $ \pl -> Just $ divideDoorPane (_plMID pl) wl cond soff speed ps g
     _ -> undefined
   where
-    adoor (x, y) = PutSlideDr thedoor wl DoorObstacle soff x y
+    adoor (x, y) = PutSlideDr thedoor wl mempty soff x y
     thedoor =
         defaultDoor & drSpeed .~ speed & drTrigger .~ cond
             & drPushedBy .~ maybe PushesItself PushedBy mid
@@ -81,7 +83,7 @@ putAutoDoor a b = Placement (PS 0 0) (PutCoord a) Nothing Nothing $ \_ apl ->
         let x = w ^?! gwWorld . coordinates . ix (apl ^?! plMID . _Just)
             y = w ^?! gwWorld . coordinates . ix (bpl ^?! plMID . _Just)
         in Just $ putDoubleDoor
-                AutoDoorObstacle
+                (S.fromList [WallObstacle WallBlockVisibility])
                 defaultAutoWall
                 (WdBlCrFilterNearPoint 40 (0.5 *.* (x + y)) CrIsAnimate)
                 a
@@ -109,7 +111,8 @@ switchDoor btpos btrot dra drb col = pContID
         jsps0J (doorbetween btid dra drc) $
             sps0 (doorbetween btid drb drc)
   where
-    doorbetween btid a b = PutSlideDr thedoor (switchWallCol col) DoorObstacle 1 a b
+    doorbetween btid a b = PutSlideDr thedoor (switchWallCol col) 
+        (S.fromList (WallObstacle <$> [WallNotAutoOpen,WallBlockVisibility])) 1 a b
       where
         thedoor =
             defaultDoor
diff --git a/src/Dodge/Placement/PlaceSpot.hs b/src/Dodge/Placement/PlaceSpot.hs
index d4f83861a..14fca9fe3 100644
--- a/src/Dodge/Placement/PlaceSpot.hs
+++ b/src/Dodge/Placement/PlaceSpot.hs
@@ -6,6 +6,7 @@
 -}
 module Dodge.Placement.PlaceSpot (placeSpot) where
 
+import qualified Data.Set as S
 import Color
 import Control.Monad.State
 import Data.Bifunctor
@@ -165,7 +166,7 @@ placeChasm gw rid ps shiftps =
         & gwWorld %~ f
   where
     f w = foldl' g w (loopPairs shiftps)
-    g w (x,y) = fst $ obstructPathsCrossing ChasmObstacle x y w
+    g w (x,y) = fst $ obstructPathsCrossing (S.singleton ChasmObstacle) x y w
 
 --evaluateRandPS
 --    :: Int -> State StdGen PSType -> PlacementSpot -> GenWorld -> (Int, GenWorld)
@@ -185,7 +186,7 @@ placeWallPoly qs wl w = foldl' (addPane wl) w pairs
 addPane :: Wall -> World -> (Point2, Point2) -> World
 addPane wl w l =
     w & plNew (cWorld . lWorld . walls) wlID (wl & wlLine .~ l)
-        & fst . uncurry (obstructPathsCrossing WallObstacle) l
+        & fst . uncurry (obstructPathsCrossing (S.fromList [WallObstacle WallNotAutoOpen])) l
 
 mvProp :: Point2 -> Float -> Prop -> Prop
 mvProp p a = (prRot +~ a) . (prPos %~ ((p +.+) . rotateV a))
diff --git a/src/Dodge/Placement/PlaceSpot/Block.hs b/src/Dodge/Placement/PlaceSpot/Block.hs
index fd9625c46..e8871e660 100644
--- a/src/Dodge/Placement/PlaceSpot/Block.hs
+++ b/src/Dodge/Placement/PlaceSpot/Block.hs
@@ -4,6 +4,7 @@ module Dodge.Placement.PlaceSpot.Block (
     plLineBlock,
 ) where
 
+import qualified Data.Set as S
 import Control.Lens
 import qualified Data.IntSet as IS
 import Data.List
@@ -119,5 +120,6 @@ insertWalls blid wls w = w' & cWorld . lWorld . blocks . ix blid . blObstructs .
 
 insertWall :: Wall -> World -> (World, [(Int,Int)])
 insertWall wl =
-    uncurry (obstructPathsCrossing BlockObstacle) (_wlLine wl)
+    uncurry (obstructPathsCrossing (S.fromList [WallObstacle WallNotAutoOpen, WallObstacle WallBlockVisibility])) 
+        (_wlLine wl)
         . (cWorld . lWorld . walls . at (_wlID wl) ?~ wl)
diff --git a/src/Dodge/Placement/PlaceSpot/TriggerDoor.hs b/src/Dodge/Placement/PlaceSpot/TriggerDoor.hs
index 35888e03e..4fadfcd6d 100644
--- a/src/Dodge/Placement/PlaceSpot/TriggerDoor.hs
+++ b/src/Dodge/Placement/PlaceSpot/TriggerDoor.hs
@@ -4,6 +4,7 @@ module Dodge.Placement.PlaceSpot.TriggerDoor (
     updateDoorEdges,
 ) where
 
+import qualified Data.Set as S
 import Dodge.ShiftPoint
 import Linear
 import Dodge.Data.GenWorld
@@ -18,7 +19,7 @@ import Picture
 
 plDoor ::
     Color ->
-    EdgeObstacle ->
+    S.Set EdgeObstacle ->
     -- | Opening condition
     WdBl ->
     -- | Door positions, closed to open.
@@ -51,7 +52,8 @@ plDoor col eo cond l p1 p2 gw = (drid, over gwWorld addWalls $ gw & gwWorld . cW
     addWalls w' = foldl' (addDoorWall eo drid $ switchWallCol col) w' $ zip wlids
         $ wlps' & each . each %~ shiftPointBy p1
 
-addDoorWall :: EdgeObstacle -> Int -> Wall -> World -> (Int, (Point2, Point2)) -> World
+addDoorWall :: S.Set EdgeObstacle 
+    -> Int -> Wall -> World -> (Int, (Point2, Point2)) -> World
 addDoorWall eo drid wl w (wlid, wlps) =
     w'
         & cWorld . lWorld . walls
@@ -80,7 +82,7 @@ updateDoorEdge _ w _ = w
 plSlideDoor ::
     Door ->
     Wall ->
-    EdgeObstacle ->
+    S.Set EdgeObstacle ->
     Float ->
     Point2 ->
     Point2 ->
diff --git a/src/Dodge/Room/Airlock.hs b/src/Dodge/Room/Airlock.hs
index cfcf2c2a5..b172f0591 100644
--- a/src/Dodge/Room/Airlock.hs
+++ b/src/Dodge/Room/Airlock.hs
@@ -35,8 +35,8 @@ decontamRoom i =
         & rmPmnts
             .~ [ pContID (PS (V2 (-35) 50) (negate $ pi / 2)) (PutButton $ makeSwitch col red NoWorldEffect NoWorldEffect) $
                     \btid -> Just $
-                        putDoubleDoorThen DoorObstacle thewall (WdBlNegate $ WdBlBtOn btid) 1 (V2 0 20) (V2 40 20) 2 $
-                            \_ _ -> Just $ putDoubleDoor DoorObstacle thewall (WdBlBtOn btid) (V2 0 80) (V2 40 80) 2
+                        putDoubleDoorThen switchWallObs thewall (WdBlNegate $ WdBlBtOn btid) 1 (V2 0 20) (V2 40 20) 2 $
+                            \_ _ -> Just $ putDoubleDoor switchWallObs thewall (WdBlBtOn btid) (V2 0 80) (V2 40 80) 2
                , invisibleWall $ rectNSWE 60 40 (-40) (-30)
                , spanLightI (V2 (-20) 30) (V2 (-20) 70)
                , analyser (NoItemZone ps) (PS 50 0) (PS mcpos 0) & plExternalID ?~ i
@@ -50,7 +50,7 @@ decontamRoom i =
         pmnt <- gw ^? genPmnt . ix i
         return $
             putDoubleDoor
-                DoorObstacle
+                switchWallObs
                 (switchWallCol red)
                 (cond pmnt)
                 (V2 (-10) 35)
@@ -78,8 +78,8 @@ airlock0 =
         , _rmPmnts =
             [ pContID (PS (V2 (-35) 50) (negate $ pi / 2)) (PutButton $ makeSwitch col red NoWorldEffect NoWorldEffect) $
                 \btid -> Just $
-                    putDoubleDoorThen DoorObstacle thewall (WdBlNegate $ WdBlBtOn btid) 1 (V2 0 20) (V2 40 20) 2 $
-                        \_ _ -> Just $ putDoubleDoor DoorObstacle thewall (WdBlBtOn btid) (V2 0 80) (V2 40 80) 2
+                    putDoubleDoorThen switchWallObs thewall (WdBlNegate $ WdBlBtOn btid) 1 (V2 0 20) (V2 40 20) 2 $
+                        \_ _ -> Just $ putDoubleDoor switchWallObs thewall (WdBlBtOn btid) (V2 0 80) (V2 40 80) 2
             , invisibleWall $ rectNSWE 60 40 (-40) (-30)
             , spanLightI (V2 (-2) 30) (V2 (-2) 70)
             , sps0 $ putShape $ thinHighBar 75 (V2 40 50) (V2 (-1) 50)
@@ -97,7 +97,7 @@ airlock0 =
 
 --airlockDoor :: Color -> WdBl -> [(Point2, Point2)] -> PSType
 airlockDoor :: Color -> WdBl -> Float -> Point2A -> Point2A -> PSType
-airlockDoor col = PutDoor col DoorObstacle
+airlockDoor col = PutDoor col switchWallObs
 
 airlockDoubleDoor ::
     Point2 ->
diff --git a/src/Dodge/Room/Door.hs b/src/Dodge/Room/Door.hs
index 2b01cde94..6a4182115 100644
--- a/src/Dodge/Room/Door.hs
+++ b/src/Dodge/Room/Door.hs
@@ -43,5 +43,5 @@ triggerDoorRoom i =
     f gw = fromMaybe (error "tried to put a door using an empty placement list") $ do
         pmnt <- gw ^? genPmnt . ix i
         return $ putDoubleDoor 
-            DoorObstacle (switchWallCol red) (cond pmnt) (V2 0 20) (V2 40 20) 2
+            switchWallObs (switchWallCol red) (cond pmnt) (V2 0 20) (V2 40 20) 2
     cond pmnt = WdTrig $ fromJust (_plMID pmnt)
diff --git a/src/Dodge/Room/LongDoor.hs b/src/Dodge/Room/LongDoor.hs
index b103635e2..316e71fc5 100644
--- a/src/Dodge/Room/LongDoor.hs
+++ b/src/Dodge/Room/LongDoor.hs
@@ -47,8 +47,8 @@ twinSlowDoorRoom w h x =
         , _rmPath = mempty
         , _rmPmnts =
             [ pContID (PS (V2 0 (h -5)) pi) (PutButton $ makeButton col NoWorldEffect) $
-                \btid -> jsps0J (PutSlideDr (thedoor btid) thewall DoorObstacle 1 (V2 x 1) (V2 x h)) $
-                    ps0 (PutSlideDr (thedoor btid) thewall DoorObstacle 1 (V2 (- x) 1) (V2 (- x) h)) $
+                \btid -> jsps0J (PutSlideDr (thedoor btid) thewall switchWallObs 1 (V2 x 1) (V2 x h)) $
+                    ps0 (PutSlideDr (thedoor btid) thewall switchWallObs 1 (V2 (- x) 1) (V2 (- x) h)) $
                         \did -> jps0' (PutLS (lsColPos (V3 0.75 0 0) (V3 0 (h -1) lampheight))) $
                             \lspl -> jsps0 $ PutProp $ addColorChange (fromJust $ _plMID lspl) did $ lampCoverWhen (WdBlDoorMoving did) (V2 0 (h -1)) lampheight
             ]
@@ -135,7 +135,7 @@ addButtonSlowDoor x h rm = do
         (rprBool (isUnusedLnkType InLink))
         $ \btplmnt -> Just $
             putDoubleDoorThen
-                DoorObstacle
+                switchWallObs
                 thewall
                 (WdBlBtOn $ fromJust $ _plMID btplmnt)
                 30
diff --git a/src/Dodge/Room/Procedural.hs b/src/Dodge/Room/Procedural.hs
index 3c7fd2881..0f2f3a250 100644
--- a/src/Dodge/Room/Procedural.hs
+++ b/src/Dodge/Room/Procedural.hs
@@ -327,8 +327,8 @@ centerVaultRoom w h d =
     theDoor =
         [ pContID (PS (V2 35 (d + 4)) 0) (PutButton $ makeSwitch col red NoWorldEffect NoWorldEffect) $
             \btid ->
-                jspsJ (V2 0 (d -10)) 0 (PutSlideDr (thedoor btid) thewall DoorObstacle 1 (V2 (-21) 0) (V2 0 0)) $
-                    sPS (V2 0 (d -10)) 0 (PutSlideDr (thedoor btid) thewall DoorObstacle 1 (V2 21 0) (V2 0 0))
+                jspsJ (V2 0 (d -10)) 0 (PutSlideDr (thedoor btid) thewall switchWallObs 1 (V2 (-21) 0) (V2 0 0)) $
+                    sPS (V2 0 (d -10)) 0 (PutSlideDr (thedoor btid) thewall switchWallObs 1 (V2 21 0) (V2 0 0))
         ]
     thewall = switchWallCol col
     thedoor btid =
diff --git a/src/Dodge/Update.hs b/src/Dodge/Update.hs
index 9210c74eb..8d62eef31 100644
--- a/src/Dodge/Update.hs
+++ b/src/Dodge/Update.hs
@@ -318,12 +318,10 @@ updateEdgeWallObs :: World -> (Int,Int) -> World
 updateEdgeWallObs w (i,j) = fromMaybe w $ do
     s <- getNodePos i w
     e <- getNodePos j w
-    let wls = snd <$> wlsHitUnsorted s e w
-    return $ w & cWorld . incGraph %~ updateEdge (f wls) (i,j)
+    let wlflags = foldMap (^. _2 . wlPathFlag) $ wlsHitUnsorted s e w
+    return $ w & cWorld . incGraph %~ updateEdge (f wlflags) (i,j)
   where
-    f wls 
-        | all _wlPathable wls = (at BlockObstacle .~ Nothing) . (at DoorObstacle .~ Nothing)
-        | otherwise = at DoorObstacle ?~ ()
+    f x _ = S.map WallObstacle x
 
 updateDoors :: World -> World
 updateDoors w = let (is,w') = foldrM updateDoor w (w ^. cWorld . lWorld . doors)
diff --git a/tags b/tags
index 1773b32bc..2024c4d80 100644
--- a/tags
+++ b/tags
@@ -75,7 +75,6 @@ AttentiveTo	src/Dodge/Data/Creature/Perception.hs	59;"	C
 Audition	src/Dodge/Data/Creature/Perception.hs	45;"	t
 AutoAI	src/Dodge/Data/Creature/Misc.hs	45;"	C
 AutoCrit	src/Dodge/Data/Creature/Misc.hs	70;"	C
-AutoDoorObstacle	src/Dodge/Data/PathGraph.hs	51;"	C
 AutoTrigger	src/Dodge/Data/TriggerType.hs	8;"	C
 Avatar	src/Dodge/Data/Creature/Misc.hs	59;"	C
 AvatarDead	src/Dodge/Data/Creature/Misc.hs	67;"	C
@@ -138,7 +137,6 @@ BlockDrawBlSh	src/Dodge/Data/Block.hs	37;"	C
 BlockDrawColHeightPoss	src/Dodge/Data/Block.hs	39;"	C
 BlockDrawMempty	src/Dodge/Data/Block.hs	36;"	C
 BlockDraws	src/Dodge/Data/Block.hs	38;"	C
-BlockObstacle	src/Dodge/Data/PathGraph.hs	49;"	C
 BlockPart	src/Dodge/Data/Wall/Structure.hs	14;"	C
 BlockedLink	src/Dodge/Data/Room.hs	50;"	C
 BloomLayer	src/Picture/Data.hs	23;"	C
@@ -212,7 +210,7 @@ ChangeStrategy	src/Dodge/Data/ActionPlan.hs	43;"	C
 ChaseAI	src/Dodge/Data/Creature/Misc.hs	38;"	C
 ChaseCrit	src/Dodge/Data/Creature/Misc.hs	68;"	C
 ChaseCritters	src/Dodge/Data/Creature/State.hs	16;"	C
-ChasmObstacle	src/Dodge/Data/PathGraph.hs	53;"	C
+ChasmObstacle	src/Dodge/Data/PathGraph.hs	50;"	C
 ChemFuel	src/Dodge/Data/Item/Use/Consumption/Ammo.hs	14;"	C
 ChooseMovementLtAuto	src/Dodge/Data/CreatureEffect.hs	29;"	C
 ChooseMovementSpreadGun	src/Dodge/Data/CreatureEffect.hs	28;"	C
@@ -349,16 +347,15 @@ DoNotMoveEquipment	src/Dodge/Data/RightButtonOptions.hs	18;"	C
 DoReplicate	src/Dodge/Data/ActionPlan.hs	106;"	C
 DoReplicatePartial	src/Dodge/Data/ActionPlan.hs	110;"	C
 DockingBaySS	src/Dodge/Data/Scenario.hs	92;"	C
-Door	src/Dodge/Data/Door.hs	30;"	t
+Door	src/Dodge/Data/Door.hs	29;"	t
 DoorLerp	src/Dodge/Data/WorldEffect.hs	63;"	C
-DoorObstacle	src/Dodge/Data/PathGraph.hs	50;"	C
 DoorPart	src/Dodge/Data/Wall/Structure.hs	12;"	C
 DoubleRes	src/Dodge/Data/Config.hs	98;"	C
 DoubleTreeNodeType	src/Dodge/Data/DoubleTree.hs	14;"	t
 DrWdId	src/Dodge/Data/WorldEffect.hs	63;"	C
 DrWdWd	src/Dodge/Data/WorldEffect.hs	63;"	t
-DrawForceField	src/Dodge/Data/Wall.hs	45;"	C
-DrawnWall	src/Dodge/Data/Wall.hs	41;"	C
+DrawForceField	src/Dodge/Data/Wall.hs	47;"	C
+DrawnWall	src/Dodge/Data/Wall.hs	43;"	C
 DroneAmmo	src/Dodge/Data/AmmoType.hs	10;"	C
 DropItem	src/Dodge/Data/ActionPlan.hs	38;"	C
 DudPayload	src/Dodge/Data/Payload.hs	11;"	C
@@ -858,7 +855,7 @@ NorthEast8	src/Dodge/Data/CardinalPoint.hs	21;"	C
 NorthWest	src/Dodge/Data/CardinalPoint.hs	16;"	C
 NorthWest8	src/Dodge/Data/CardinalPoint.hs	27;"	C
 NotLink	src/Dodge/Data/Room.hs	69;"	C
-NotPushed	src/Dodge/Data/Door.hs	27;"	C
+NotPushed	src/Dodge/Data/Door.hs	26;"	C
 Nothing'	src/MaybeHelp.hs	11;"	C
 NothingID	src/Dodge/Data/CrWlID.hs	10;"	C
 NozzleAngle	src/Dodge/Data/Item/Params.hs	16;"	C
@@ -918,8 +915,8 @@ OnTurret	src/Dodge/Data/Item/Location.hs	37;"	C
 OnceSound	src/Dodge/Data/SoundOrigin.hs	14;"	C
 OneHand	src/Dodge/Data/AimStance.hs	14;"	C
 OnwardCluster	src/Dodge/Data/RoomCluster.hs	13;"	C
-Opacity	src/Dodge/Data/Wall.hs	38;"	t
-Opaque	src/Dodge/Data/Wall.hs	42;"	C
+Opacity	src/Dodge/Data/Wall.hs	40;"	t
+Opaque	src/Dodge/Data/Wall.hs	44;"	C
 OpticScope	src/Dodge/Data/Item/Scope.hs	12;"	C
 OptionScreen	src/Dodge/Data/Universe.hs	80;"	C
 OptionScreenFlag	src/Dodge/Data/Universe.hs	70;"	t
@@ -1034,9 +1031,9 @@ PulseBallSF	src/Dodge/Data/ComposedItem.hs	44;"	C
 PulseLaser	src/Dodge/Data/PulseLaser.hs	11;"	t
 PulseLaserSF	src/Dodge/Data/ComposedItem.hs	41;"	C
 PulseStatus	src/Dodge/Data/Creature/Misc.hs	52;"	C
-PushSource	src/Dodge/Data/Door.hs	24;"	t
-PushedBy	src/Dodge/Data/Door.hs	26;"	C
-PushesItself	src/Dodge/Data/Door.hs	25;"	C
+PushSource	src/Dodge/Data/Door.hs	23;"	t
+PushedBy	src/Dodge/Data/Door.hs	25;"	C
+PushesItself	src/Dodge/Data/Door.hs	24;"	C
 PutBlock	src/Dodge/Data/GenWorld.hs	45;"	C
 PutButton	src/Dodge/Data/GenWorld.hs	41;"	C
 PutChasm	src/Dodge/Data/GenWorld.hs	64;"	C
@@ -1157,8 +1154,8 @@ ScreenPos	src/Dodge/Data/ScreenPos.hs	12;"	t
 Search	src/Dodge/Data/ActionPlan.hs	145;"	C
 SecretCabal	src/Dodge/Data/Scenario.hs	44;"	C
 SectionCursor	src/Dodge/Data/SelectionList.hs	23;"	t
-SeeAbove	src/Dodge/Data/Wall.hs	40;"	C
-SeeThrough	src/Dodge/Data/Wall.hs	39;"	C
+SeeAbove	src/Dodge/Data/Wall.hs	42;"	C
+SeeThrough	src/Dodge/Data/Wall.hs	41;"	C
 Sel	src/Dodge/Data/HUD.hs	39;"	C
 SelCloseButton	src/Dodge/Data/Item/Use/Consumption/LoadAction.hs	31;"	C
 SelCloseItem	src/Dodge/Data/Item/Use/Consumption/LoadAction.hs	29;"	C
@@ -1439,10 +1436,14 @@ WRISTARMOUR	src/Dodge/Data/Item/Combine.hs	123;"	C
 WRIST_ECG	src/Dodge/Data/Item/Combine.hs	135;"	C
 WaitThen	src/Dodge/Data/ActionPlan.hs	74;"	C
 Walking	src/Dodge/Data/Creature/Stance.hs	23;"	C
-Wall	src/Dodge/Data/Wall.hs	18;"	t
+Wall	src/Dodge/Data/Wall.hs	19;"	t
 WallArcNode	src/Dodge/Data/LWorld.hs	154;"	C
-WallDraw	src/Dodge/Data/Wall.hs	45;"	t
-WallObstacle	src/Dodge/Data/PathGraph.hs	52;"	C
+WallBlockVisibility	src/Dodge/Data/Wall/Structure.hs	19;"	C
+WallDraw	src/Dodge/Data/Wall.hs	47;"	t
+WallFlag	src/Dodge/Data/Wall/Structure.hs	18;"	t
+WallNotAutoOpen	src/Dodge/Data/Wall/Structure.hs	20;"	C
+WallNotDestrucable	src/Dodge/Data/Wall/Structure.hs	21;"	C
+WallObstacle	src/Dodge/Data/PathGraph.hs	49;"	C
 WallP	src/Dodge/LevelGen/StaticWalls.hs	23;"	t
 WallP	src/Dodge/LevelGen/StaticWalls/Deprecated.hs	11;"	t
 WallSound	src/Dodge/Data/SoundOrigin.hs	24;"	C
@@ -1754,20 +1755,18 @@ _doReplicateAction	src/Dodge/Data/ActionPlan.hs	113;"	f
 _doReplicateTimes	src/Dodge/Data/ActionPlan.hs	107;"	f
 _doReplicateTimes	src/Dodge/Data/ActionPlan.hs	112;"	f
 _doors	src/Dodge/Data/LWorld.hs	118;"	f
-_drFootPrint	src/Dodge/Data/Door.hs	38;"	f
-_drHP	src/Dodge/Data/Door.hs	39;"	f
-_drID	src/Dodge/Data/Door.hs	31;"	f
-_drLerp	src/Dodge/Data/Door.hs	37;"	f
-_drMech	src/Dodge/Data/Door.hs	34;"	f
-_drMounts	src/Dodge/Data/Door.hs	43;"	f
-_drObstacleType	src/Dodge/Data/Door.hs	45;"	f
-_drOnePos	src/Dodge/Data/Door.hs	36;"	f
-_drPushedBy	src/Dodge/Data/Door.hs	41;"	f
-_drPushes	src/Dodge/Data/Door.hs	42;"	f
-_drSpeed	src/Dodge/Data/Door.hs	40;"	f
-_drTrigger	src/Dodge/Data/Door.hs	33;"	f
-_drWallIDs	src/Dodge/Data/Door.hs	32;"	f
-_drZeroPos	src/Dodge/Data/Door.hs	35;"	f
+_drFootPrint	src/Dodge/Data/Door.hs	36;"	f
+_drHP	src/Dodge/Data/Door.hs	37;"	f
+_drID	src/Dodge/Data/Door.hs	30;"	f
+_drLerp	src/Dodge/Data/Door.hs	35;"	f
+_drMech	src/Dodge/Data/Door.hs	32;"	f
+_drMounts	src/Dodge/Data/Door.hs	41;"	f
+_drOnePos	src/Dodge/Data/Door.hs	34;"	f
+_drPushedBy	src/Dodge/Data/Door.hs	39;"	f
+_drPushes	src/Dodge/Data/Door.hs	40;"	f
+_drSpeed	src/Dodge/Data/Door.hs	38;"	f
+_drTrigger	src/Dodge/Data/Door.hs	31;"	f
+_drZeroPos	src/Dodge/Data/Door.hs	33;"	f
 _dsPos	src/Dodge/Data/Cloud.hs	28;"	f
 _dsTimer	src/Dodge/Data/Cloud.hs	30;"	f
 _dsType	src/Dodge/Data/Cloud.hs	31;"	f
@@ -2054,9 +2053,9 @@ _nzWalkSpeed	src/Dodge/Data/Muzzle.hs	50;"	f
 _offGridFromEdges	src/Dodge/Data/Room.hs	82;"	f
 _oldMagnets	src/Dodge/Data/LWorld.hs	121;"	f
 _onGridFromEdges	src/Dodge/Data/Room.hs	81;"	f
-_opDraw	src/Dodge/Data/Wall.hs	41;"	f
+_opDraw	src/Dodge/Data/Wall.hs	43;"	f
 _opSel	src/Dodge/Data/RightButtonOptions.hs	15;"	f
-_opTexture	src/Dodge/Data/Wall.hs	42;"	f
+_opTexture	src/Dodge/Data/Wall.hs	44;"	f
 _opticDefaultZoom	src/Dodge/Data/Item/Scope.hs	18;"	f
 _opticPos	src/Dodge/Data/Item/Scope.hs	14;"	f
 _opticZoom	src/Dodge/Data/Item/Scope.hs	17;"	f
@@ -2454,23 +2453,24 @@ _windowPosY	src/Dodge/Data/Config.hs	54;"	f
 _windowShader	src/Data/Preload/Render.hs	19;"	f
 _windowX	src/Dodge/Data/Config.hs	51;"	f
 _windowY	src/Dodge/Data/Config.hs	52;"	f
-_wlBouncy	src/Dodge/Data/Wall.hs	25;"	f
-_wlColor	src/Dodge/Data/Wall.hs	21;"	f
-_wlFireThrough	src/Dodge/Data/Wall.hs	28;"	f
-_wlHeight	src/Dodge/Data/Wall.hs	33;"	f
-_wlID	src/Dodge/Data/Wall.hs	20;"	f
-_wlLine	src/Dodge/Data/Wall.hs	19;"	f
-_wlMaterial	src/Dodge/Data/Wall.hs	34;"	f
-_wlOpacity	src/Dodge/Data/Wall.hs	22;"	f
-_wlPathable	src/Dodge/Data/Wall.hs	23;"	f
-_wlPenetrable	src/Dodge/Data/Wall.hs	24;"	f
-_wlReflect	src/Dodge/Data/Wall.hs	29;"	f
-_wlRotateTo	src/Dodge/Data/Wall.hs	31;"	f
+_wlBouncy	src/Dodge/Data/Wall.hs	27;"	f
+_wlColor	src/Dodge/Data/Wall.hs	22;"	f
+_wlFireThrough	src/Dodge/Data/Wall.hs	30;"	f
+_wlHeight	src/Dodge/Data/Wall.hs	35;"	f
+_wlID	src/Dodge/Data/Wall.hs	21;"	f
+_wlLine	src/Dodge/Data/Wall.hs	20;"	f
+_wlMaterial	src/Dodge/Data/Wall.hs	36;"	f
+_wlOpacity	src/Dodge/Data/Wall.hs	23;"	f
+_wlPathFlag	src/Dodge/Data/Wall.hs	24;"	f
+_wlPathable	src/Dodge/Data/Wall.hs	25;"	f
+_wlPenetrable	src/Dodge/Data/Wall.hs	26;"	f
+_wlReflect	src/Dodge/Data/Wall.hs	31;"	f
+_wlRotateTo	src/Dodge/Data/Wall.hs	33;"	f
 _wlStCreature	src/Dodge/Data/Wall/Structure.hs	15;"	f
-_wlStructure	src/Dodge/Data/Wall.hs	32;"	f
-_wlTouchThrough	src/Dodge/Data/Wall.hs	27;"	f
-_wlUnshadowed	src/Dodge/Data/Wall.hs	30;"	f
-_wlWalkable	src/Dodge/Data/Wall.hs	26;"	f
+_wlStructure	src/Dodge/Data/Wall.hs	34;"	f
+_wlTouchThrough	src/Dodge/Data/Wall.hs	29;"	f
+_wlUnshadowed	src/Dodge/Data/Wall.hs	32;"	f
+_wlWalkable	src/Dodge/Data/Wall.hs	28;"	f
 _wlZoning	src/Dodge/Data/World.hs	49;"	f
 _worldEventFlags	src/Dodge/Data/World.hs	45;"	f
 _worldEvents	src/Dodge/Data/LWorld.hs	127;"	f
@@ -2496,7 +2496,7 @@ addCrGibs	src/Dodge/Prop/Gib.hs	17;"	f
 addDepth	src/Picture/Base.hs	133;"	f
 addDoorAtNthLinkToggleTerminal	src/Dodge/Room/Warning.hs	40;"	f
 addDoorToggleTerminal	src/Dodge/Room/Warning.hs	37;"	f
-addDoorWall	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	56;"	f
+addDoorWall	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	54;"	f
 addGib4	src/Dodge/Prop/Gib.hs	52;"	f
 addGibAt	src/Dodge/Prop/Gib.hs	63;"	f
 addGibAtDir	src/Dodge/Prop/Gib.hs	69;"	f
@@ -2990,7 +2990,7 @@ crsNearPoint	src/Dodge/Zoning/Creature.hs	18;"	f
 crsNearRect	src/Dodge/Zoning/Creature.hs	39;"	f
 crsNearSeg	src/Dodge/Zoning/Creature.hs	24;"	f
 crystalLine	src/Dodge/Placement/Instance/Wall.hs	55;"	f
-cubeShape	src/Dodge/Block/Debris.hs	105;"	f
+cubeShape	src/Dodge/Block/Debris.hs	106;"	f
 cullPoint	src/Dodge/Render/ShapePicture.hs	94;"	f
 cullPretty	src/AesonHelp.hs	14;"	f
 cutPoly	src/Dodge/LevelGen/StaticWalls.hs	77;"	f
@@ -3045,7 +3045,7 @@ deadScalp	src/Dodge/Creature/Picture.hs	81;"	f
 deadUpperBody	src/Dodge/Creature/Picture.hs	113;"	f
 debrisS	src/Dodge/SoundLogic/ExternallyGeneratedSounds.hs	684;"	f
 debrisSPic	src/Dodge/Prop/Draw.hs	20;"	f
-debrisSize	src/Dodge/Block/Debris.hs	79;"	f
+debrisSize	src/Dodge/Block/Debris.hs	80;"	f
 debugEvent	src/Dodge/Debug.hs	36;"	f
 debugEvents	src/Dodge/Debug.hs	21;"	f
 debugItem	src/Dodge/Debug.hs	39;"	f
@@ -3125,7 +3125,7 @@ deleteWallID	src/Dodge/Wall/Delete.hs	13;"	f
 deleteWallIDs	src/Dodge/Wall/Delete.hs	28;"	f
 denormalEdges	src/Polyhedra.hs	136;"	f
 destroyAllInvItems	src/Dodge/Inventory.hs	53;"	f
-destroyBlock	src/Dodge/Block.hs	48;"	f
+destroyBlock	src/Dodge/Block.hs	51;"	f
 destroyDoor	src/Dodge/DrWdWd.hs	56;"	f
 destroyInvItem	src/Dodge/Inventory.hs	40;"	f
 destroyItem	src/Dodge/Inventory.hs	62;"	f
@@ -3194,6 +3194,7 @@ doDebugTestF12	src/Dodge/Update/Input/DebugTest.hs	84;"	f
 doDebugTestF6	src/Dodge/Update/Input/DebugTest.hs	41;"	f
 doDebugTestF7	src/Dodge/Update/Input/DebugTest.hs	51;"	f
 doDebugTestF8	src/Dodge/Update/Input/DebugTest.hs	59;"	f
+doDoorLerp	src/Dodge/DrWdWd.hs	53;"	f
 doDrag	src/Dodge/Update/Input/InGame.hs	127;"	f
 doDrawing	src/Dodge/Render.hs	34;"	f
 doDrawing'	src/Dodge/Render.hs	45;"	f
@@ -3258,7 +3259,7 @@ drawBaseMachine	src/Dodge/Machine/Draw.hs	68;"	f
 drawBeam	src/Dodge/Beam/Draw.hs	6;"	f
 drawBlip	src/Dodge/RadarBlip.hs	16;"	f
 drawBlock	src/Dodge/Block/Draw.hs	7;"	f
-drawBoundingBox	src/Dodge/Debug/Picture.hs	355;"	f
+drawBoundingBox	src/Dodge/Debug/Picture.hs	354;"	f
 drawBullet	src/Dodge/Render/ShapePicture.hs	133;"	f
 drawButton	src/Dodge/Button/Draw.hs	10;"	f
 drawCPUShadows	src/Dodge/Render/Shadow.hs	19;"	f
@@ -3269,7 +3270,7 @@ drawCollisionTest	src/Dodge/Debug/Picture.hs	103;"	f
 drawCombFilter	src/Dodge/Render/Picture.hs	269;"	f
 drawCombineInventory	src/Dodge/Render/HUD.hs	182;"	f
 drawConcurrentMessage	src/Dodge/Render/Picture.hs	74;"	f
-drawCoord	src/Dodge/Debug/Picture.hs	383;"	f
+drawCoord	src/Dodge/Debug/Picture.hs	382;"	f
 drawCrInfo	src/Dodge/Debug.hs	135;"	f
 drawCrInfo'	src/Dodge/Debug.hs	130;"	f
 drawCreature	src/Dodge/Render/ShapePicture.hs	69;"	f
@@ -3278,7 +3279,7 @@ drawCross	src/Dodge/Render/Label.hs	24;"	f
 drawCrossCol	src/Dodge/Render/Label.hs	21;"	f
 drawCursorAt	src/Dodge/Render/List.hs	72;"	f
 drawCursorByTerminalStatus	src/Dodge/Render/Picture.hs	139;"	f
-drawDDATest	src/Dodge/Debug/Picture.hs	310;"	f
+drawDDATest	src/Dodge/Debug/Picture.hs	309;"	f
 drawDamSensor	src/Dodge/Machine/Draw.hs	27;"	f
 drawDebug	src/Dodge/Debug.hs	173;"	f
 drawDoubleLampCover	src/Dodge/Prop/Draw.hs	95;"	f
@@ -3293,7 +3294,7 @@ drawEnergyBall	src/Dodge/EnergyBall/Draw.hs	7;"	f
 drawEquipment	src/Dodge/Creature/Picture.hs	127;"	f
 drawExamineInventory	src/Dodge/Render/HUD.hs	198;"	f
 drawExplosiveBall	src/Dodge/EnergyBall/Draw.hs	15;"	f
-drawFarWallDetect	src/Dodge/Debug/Picture.hs	277;"	f
+drawFarWallDetect	src/Dodge/Debug/Picture.hs	276;"	f
 drawFlame	src/Dodge/Flame/Draw.hs	8;"	f
 drawFlamelet	src/Dodge/EnergyBall/Draw.hs	37;"	f
 drawForceField	src/Dodge/Wall/Draw.hs	11;"	f
@@ -3326,11 +3327,11 @@ drawMenuOrHUD	src/Dodge/Render/Picture.hs	69;"	f
 drawMenuScreen	src/Dodge/Render/MenuScreen.hs	14;"	f
 drawMouseCursor	src/Dodge/Render/Picture.hs	85;"	f
 drawMouseOver	src/Dodge/Render/HUD.hs	109;"	f
-drawMousePosition	src/Dodge/Debug/Picture.hs	373;"	f
+drawMousePosition	src/Dodge/Debug/Picture.hs	372;"	f
 drawOptions	src/Dodge/Render/MenuScreen.hs	22;"	f
 drawPathBetween	src/Dodge/Debug/Picture.hs	201;"	f
 drawPathEdge	src/Dodge/Debug/Picture.hs	266;"	f
-drawPathing	src/Dodge/Debug/Picture.hs	404;"	f
+drawPathing	src/Dodge/Debug/Picture.hs	403;"	f
 drawPlus	src/Dodge/Render/Picture.hs	165;"	f
 drawPointLabel	src/Dodge/Render/Label.hs	13;"	f
 drawProjectile	src/Dodge/Projectile/Draw.hs	13;"	f
@@ -3371,15 +3372,15 @@ drawVerticalDoubleArrow	src/Dodge/Render/Picture.hs	212;"	f
 drawVerticalLampCover	src/Dodge/Prop/Draw.hs	71;"	f
 drawWall	src/Dodge/Wall/Draw.hs	7;"	f
 drawWallFace	src/Dodge/Debug/Picture.hs	73;"	f
-drawWallSearchRays	src/Dodge/Debug/Picture.hs	319;"	f
+drawWallSearchRays	src/Dodge/Debug/Picture.hs	318;"	f
 drawWallsNearCursor	src/Dodge/Debug/Picture.hs	230;"	f
 drawWallsNearSegment	src/Dodge/Debug/Picture.hs	130;"	f
 drawWallsNearYou	src/Dodge/Debug/Picture.hs	221;"	f
 drawWeapon	src/Dodge/Creature/Volition.hs	15;"	f
-drawWlIDs	src/Dodge/Debug/Picture.hs	391;"	f
-drawZoneCirc	src/Dodge/Debug/Picture.hs	299;"	f
+drawWlIDs	src/Dodge/Debug/Picture.hs	390;"	f
+drawZoneCirc	src/Dodge/Debug/Picture.hs	298;"	f
 drawZoneCol	src/Dodge/Debug/Picture.hs	149;"	f
-drawZoneNearPointCursor	src/Dodge/Debug/Picture.hs	292;"	f
+drawZoneNearPointCursor	src/Dodge/Debug/Picture.hs	291;"	f
 dropAll	src/Dodge/Creature/Update.hs	129;"	f
 dropInventoryPath	src/Dodge/HeldUse.hs	1351;"	f
 dropItem	src/Dodge/Creature/Action.hs	154;"	f
@@ -3410,7 +3411,7 @@ ebEffect	src/Dodge/EnergyBall.hs	45;"	f
 ebFlicker	src/Dodge/EnergyBall.hs	70;"	f
 ebtToDamage	src/Dodge/EnergyBall.hs	93;"	f
 edgeFormatting	src/Dodge/Combine/Graph.hs	129;"	f
-edgeToPic	src/Dodge/Debug/Picture.hs	413;"	f
+edgeToPic	src/Dodge/Debug/Picture.hs	412;"	f
 effectOnEquip	src/Dodge/Equipment.hs	32;"	f
 effectOnRemove	src/Dodge/Equipment.hs	19;"	f
 eitType	src/Dodge/Data/EquipType.hs	15;"	f
@@ -3956,7 +3957,6 @@ leftRightCombine	src/Dodge/Item/Grammar.hs	197;"	f
 leftWristPQ	src/Dodge/Creature/HandPos.hs	81;"	f
 legsSPic	src/Dodge/Item/Draw/SPic.hs	468;"	f
 lerpP2A	src/Dodge/ShiftPoint.hs	14;"	f
-lerpdr	src/Dodge/DrWdWd.hs	53;"	f
 liShape	src/Dodge/Placement/Instance/LightSource.hs	111;"	f
 light	src/Color.hs	104;"	f
 lightSensByDoor	src/Dodge/Room/LasTurret.hs	51;"	f
@@ -4053,7 +4053,7 @@ main	test/Spec.hs	12;"	f
 makeArc	src/Picture/Base.hs	157;"	f
 makeAttach	src/Dodge/Item/Attach.hs	10;"	f
 makeBlip	src/Dodge/RadarSweep.hs	70;"	f
-makeBlockDebris	src/Dodge/Block/Debris.hs	36;"	f
+makeBlockDebris	src/Dodge/Block/Debris.hs	37;"	f
 makeBoolOption	src/Dodge/Menu/OptionType.hs	8;"	f
 makeBullet	src/Dodge/HeldUse.hs	979;"	f
 makeButton	src/Dodge/LevelGen/Switch.hs	16;"	f
@@ -4062,9 +4062,9 @@ makeCloudAt	src/Dodge/WorldEvent/Cloud.hs	7;"	f
 makeColorTermLine	src/Dodge/Terminal.hs	111;"	f
 makeColorTermPara	src/Dodge/Terminal.hs	108;"	f
 makeCorpse	src/Dodge/Corpse/Make.hs	13;"	f
-makeDebris	src/Dodge/Block/Debris.hs	47;"	f
-makeDebrisDirected	src/Dodge/Block/Debris.hs	50;"	f
-makeDoorDebris	src/Dodge/Block/Debris.hs	25;"	f
+makeDebris	src/Dodge/Block/Debris.hs	48;"	f
+makeDebrisDirected	src/Dodge/Block/Debris.hs	51;"	f
+makeDoorDebris	src/Dodge/Block/Debris.hs	26;"	f
 makeDustAt	src/Dodge/WorldEvent/Cloud.hs	17;"	f
 makeEnumOption	src/Dodge/Menu/OptionType.hs	13;"	f
 makeExplosionAt	src/Dodge/WorldEvent/Explosion.hs	73;"	f
@@ -4111,8 +4111,8 @@ maxInvSlots	src/Dodge/Inventory/CheckSlots.hs	30;"	f
 maxShowX	src/Dodge/Combine/Graph.hs	48;"	f
 maxViewDistance	src/Dodge/Viewpoints.hs	26;"	f
 maybeBlockedPassage	src/Dodge/Room/RezBox.hs	80;"	f
-maybeClearPath	src/Dodge/Block.hs	68;"	f
-maybeClearPaths	src/Dodge/Block.hs	65;"	f
+maybeClearPath	src/Dodge/Block.hs	73;"	f
+maybeClearPaths	src/Dodge/Block.hs	70;"	f
 maybeDestroyBlock	src/Dodge/Wall/Damage.hs	32;"	f
 maybeExitCombine	src/Dodge/Update/Input/InGame.hs	562;"	f
 maybeOpenConsole	src/Dodge/Update.hs	129;"	f
@@ -4370,7 +4370,7 @@ pistol	src/Dodge/Item/Held/Stick.hs	40;"	f
 pistolerRoom	src/Dodge/Room/Room.hs	330;"	f
 pjRemoteSetDirection	src/Dodge/Projectile/Update.hs	172;"	f
 plBlock	src/Dodge/Placement/PlaceSpot/Block.hs	16;"	f
-plDoor	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	20;"	f
+plDoor	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	19;"	f
 plLineBlock	src/Dodge/Placement/PlaceSpot/Block.hs	48;"	f
 plMachine	src/Dodge/Placement/PlaceSpot.hs	206;"	f
 plMachine'	src/Dodge/Placement/PlaceSpot.hs	250;"	f
@@ -4379,7 +4379,7 @@ plNewID	src/Dodge/Base/NewID.hs	7;"	f
 plNewUpID	src/Dodge/Base/NewID.hs	13;"	f
 plNewUsing	src/Dodge/Base/NewID.hs	27;"	f
 plRRpt	src/Dodge/LevelGen/PlacementHelper.hs	33;"	f
-plSlideDoor	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	82;"	f
+plSlideDoor	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	80;"	f
 plTurret	src/Dodge/Placement/PlaceSpot.hs	219;"	f
 placeChasm	src/Dodge/Placement/PlaceSpot.hs	161;"	f
 placeMachineWalls	src/Dodge/Placement/PlaceSpot.hs	264;"	f
@@ -5006,7 +5006,7 @@ soundMultiFrom	src/Dodge/SoundLogic.hs	187;"	f
 soundOriginIDsAt	src/Dodge/WorldEvent/Sound.hs	18;"	f
 soundOriginsIDsAt	src/Dodge/WorldEvent/Sound.hs	13;"	f
 soundPathList	src/Dodge/SoundLogic/ExternallyGeneratedSounds.hs	296;"	f
-soundPic	src/Dodge/Debug/Picture.hs	360;"	f
+soundPic	src/Dodge/Debug/Picture.hs	359;"	f
 soundStart	src/Dodge/SoundLogic.hs	118;"	f
 soundToOnomato	src/Dodge/SoundLogic/ExternallyGeneratedSounds.hs	150;"	f
 soundToVol	src/Dodge/SoundLogic/ExternallyGeneratedSounds.hs	4;"	f
@@ -5029,7 +5029,7 @@ speedLegs	src/Dodge/Item/Equipment.hs	90;"	f
 splashMenu	src/Dodge/Menu.hs	33;"	f
 splashMenuOptions	src/Dodge/Menu.hs	38;"	f
 splashScreen	src/Dodge/Initialisation.hs	10;"	f
-splinterBlock	src/Dodge/Block.hs	22;"	f
+splinterBlock	src/Dodge/Block.hs	25;"	f
 splitBezierquad	src/Geometry/Bezier.hs	15;"	f
 splitExtra	src/Justify.hs	21;"	f
 splitLookupTrie	src/SimpleTrie.hs	39;"	f
@@ -5330,7 +5330,7 @@ unpause	src/Dodge/Menu.hs	212;"	f
 unsafeBlinkAction	src/Dodge/Creature/Action/Blink.hs	57;"	f
 unsafeBlinker	src/Dodge/Item/Held/Utility.hs	33;"	f
 unsafeSwapKeys	src/IntMapHelp.hs	75;"	f
-unshadowBlock	src/Dodge/Block.hs	35;"	f
+unshadowBlock	src/Dodge/Block.hs	38;"	f
 untilJust	src/MonadHelp.hs	7;"	f
 untilJustCount	src/MonadHelp.hs	14;"	f
 unusedOffPathAwayFromLink	src/Dodge/PlacementSpot.hs	131;"	f
@@ -5366,8 +5366,8 @@ updateDisplaySections	src/Dodge/DisplayInventory.hs	116;"	f
 updateDistortion	src/Dodge/Distortion.hs	5;"	f
 updateDistortions	src/Dodge/Update.hs	577;"	f
 updateDoor	src/Dodge/DrWdWd.hs	20;"	f
-updateDoorEdge	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	74;"	f
-updateDoorEdges	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	71;"	f
+updateDoorEdge	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	72;"	f
+updateDoorEdges	src/Dodge/Placement/PlaceSpot/TriggerDoor.hs	69;"	f
 updateDoors	src/Dodge/Update.hs	328;"	f
 updateDust	src/Dodge/Update.hs	841;"	f
 updateDusts	src/Dodge/Update.hs	691;"	f
@@ -5516,8 +5516,8 @@ verticalPipe	src/Dodge/Picture.hs	19;"	f
 verticalPipe	src/Dodge/Placement/Instance/Pipe.hs	6;"	f
 verticalWire	src/Dodge/Wire.hs	24;"	f
 vgunMuzzles	src/Dodge/HeldUse.hs	341;"	f
-viewBoundaries	src/Dodge/Debug/Picture.hs	328;"	f
-viewClipBounds	src/Dodge/Debug/Picture.hs	337;"	f
+viewBoundaries	src/Dodge/Debug/Picture.hs	327;"	f
+viewClipBounds	src/Dodge/Debug/Picture.hs	336;"	f
 viewDistanceFromItems	src/Dodge/Update/Camera.hs	194;"	f
 viewTarget	src/Dodge/Creature/ReaderUpdate.hs	154;"	f
 violet	src/Color.hs	21;"	f