diff --git a/saveSlot/seed b/saveSlot/seed
index 63ae1b50b..2f0d3ff35 100644
--- a/saveSlot/seed
+++ b/saveSlot/seed
@@ -1 +1 @@
-3392801227273840162
\ No newline at end of file
+7114951007332849727
\ No newline at end of file
diff --git a/src/Dodge/Barreloid.hs b/src/Dodge/Barreloid.hs
index ecf87cc73..5a5fb7c94 100644
--- a/src/Dodge/Barreloid.hs
+++ b/src/Dodge/Barreloid.hs
@@ -2,6 +2,7 @@
 
 module Dodge.Barreloid (updateBarreloid) where
 
+import Linear
 import Data.List
 import Data.Maybe
 import Dodge.Creature.State
@@ -29,16 +30,16 @@ updateExpBarrel ps cr w = case cr ^. crHP of
             & flip (foldl' f) ps
     HP _ ->
         w
-            & makeExplosionAt ((cr ^. crPos) `v2z` 20) 0
+            & makeExplosionAt ((cr ^. crPos) & _z +~ 20) 0
             & cWorld . lWorld . creatures . ix (_crID cr) . crHP .~ CrIsGibs
     _ -> w
   where
-    f w' p = makeSpark NormalSpark (p + normalizeV p + cr ^. crPos) (argV p) w'
+    f w' p = makeSpark NormalSpark (p + normalizeV p + cr ^. crPos . _xy) (argV p) w'
     damages = cr ^. crDamage
     hiss
         | null ps = id
         | otherwise = soundContinue 
-            (BarrelHiss (_crID cr)) (_crPos cr) foamSprayLoopS (Just 1)
+            (BarrelHiss (_crID cr)) (cr ^. crPos . _xy) foamSprayLoopS (Just 1)
 
 updateBarrel :: Creature -> World -> World
 updateBarrel cr = case cr ^. crHP of
@@ -53,7 +54,7 @@ damToExpBarrel :: Creature -> Damage -> Creature
 damToExpBarrel cr dm = case dm of
     Piercing x p _ ->
         cr & crHP . _HP -~ div x 200
-            & crType . barrelType . piercedPoints .:~ (p - _crPos cr)
+            & crType . barrelType . piercedPoints .:~ (p - cr ^. crPos . _xy)
     Poison{} -> cr
     Sparking{} -> cr
     _ -> cr & crHP . _HP -~ fromMaybe 0 (dm ^? dmAmount)
diff --git a/src/Dodge/Base/Collide.hs b/src/Dodge/Base/Collide.hs
index d5b537263..afc0905d5 100644
--- a/src/Dodge/Base/Collide.hs
+++ b/src/Dodge/Base/Collide.hs
@@ -37,6 +37,7 @@ module Dodge.Base.Collide (
     collide3,
 ) where
 
+import Linear
 import Control.Lens
 import Control.Monad
 import qualified Data.IntSet as IS
@@ -60,7 +61,7 @@ overlapSegCrs :: Point2 -> Point2 -> [Creature] -> [(Point2, Creature)]
 {-# INLINE overlapSegCrs #-}
 overlapSegCrs sp ep =
     mapMaybe
-        (\cr -> (,cr) <$> listToMaybe (intersectCircSeg (_crPos cr) (crRad $ cr ^. crType) sp ep))
+        (\cr -> (,cr) <$> listToMaybe (intersectCircSeg (cr ^. crPos . _xy) (crRad $ cr ^. crType) sp ep))
 
 doBounce :: Float -> Point2 -> Point2 -> (Point2, Maybe Wall) -> Maybe (Point2, Point2)
 {-# INLINE doBounce #-}
@@ -125,7 +126,7 @@ collide3 sp ep w =
 
 -- Just (hitpoint,normaltosurface)
 collide3Walls :: Point3 -> World -> (Point3, MPO) -> (Point3, MPO)
-collide3Walls sp w ex@(ep, _) = foldl' f ex wls
+collide3Walls sp w e@(ep, _) = foldl' f e wls
   where
     f x wl = collide3Wall sp wl x
     wls = wlsNearSeg (xyV3 sp) (xyV3 ep) w
@@ -153,14 +154,12 @@ collide3Creature :: Point3 -> Creature -> (Point3, MPO) -> (Point3, MPO)
 collide3Creature sp cr (ep, m) = fromMaybe (ep, m) $ do
     h <- crHeight cr 
     (p,n) <- fst $ intersectCylSeg
-        (addZ (cr ^. crZ) cpos)
+        (cr ^. crPos)
         (crRad $ cr ^. crType)
         h
         sp
         ep
     return (p, Just (n,OCreature cr))
-  where
-    cpos = cr ^. crPos
 
 crHeight :: Creature -> Maybe Float
 crHeight cr = case cr ^. crHP of
@@ -288,7 +287,7 @@ circOnAnyCr :: Point2 -> Float -> World -> Bool
 {-# INLINE circOnAnyCr #-}
 circOnAnyCr p r w = IS.foldr f False $ crIXsNearPoint p w
   where
-    f cid bl = maybe False (\cr -> dist p (_crPos cr) < r + crRad (cr ^. crType)) (w ^? cWorld . lWorld . creatures . ix cid) || bl
+    f cid bl = maybe False (\cr -> dist p (cr ^. crPos . _xy) < r + crRad (cr ^. crType)) (w ^? cWorld . lWorld . creatures . ix cid) || bl
 
 -- | More general collision tests follow
 hasLOS :: Point2 -> Point2 -> World -> Bool
@@ -325,15 +324,15 @@ canSee :: Int -> Int -> World -> Bool
 {-# INLINE canSee #-}
 canSee i j w = hasLOS p1 p2 w
   where
-    p1 = w ^?! cWorld . lWorld . creatures . ix i . crPos -- _crPos (_creatures (_cWorld w) IM.! i)
-    p2 = w ^?! cWorld . lWorld . creatures . ix j . crPos -- _crPos (_creatures (_cWorld w) IM.! j) -- unsafe
+    p1 = w ^?! cWorld . lWorld . creatures . ix i . crPos . _xy -- _crPos (_creatures (_cWorld w) IM.! i)
+    p2 = w ^?! cWorld . lWorld . creatures . ix j . crPos . _xy -- _crPos (_creatures (_cWorld w) IM.! j) -- unsafe
 
 canSeeIndirect :: Int -> Int -> World -> Bool
 {-# INLINE canSeeIndirect #-}
 canSeeIndirect i j w = hasLOSIndirect ipos jpos w
   where
-    ipos = w ^?! cWorld . lWorld . creatures . ix i . crPos
-    jpos = w ^?! cWorld . lWorld . creatures . ix j . crPos
+    ipos = w ^?! cWorld . lWorld . creatures . ix i . crPos . _xy
+    jpos = w ^?! cWorld . lWorld . creatures . ix j . crPos . _xy
 
 anythingHitCirc :: Float -> Point2 -> Point2 -> World -> Bool
 anythingHitCirc rad sp ep w = hitCr || circHitWall sp ep rad w
@@ -345,7 +344,7 @@ anythingHitCirc rad sp ep w = hitCr || circHitWall sp ep rad w
     f cid bl =
         maybe
             False
-            (\cr -> intersectCircSegTest (_crPos cr) (rad + crRad (cr ^. crType)) sp ep)
+            (\cr -> intersectCircSegTest (cr ^. crPos . _xy) (rad + crRad (cr ^. crType)) sp ep)
             (w ^? cWorld . lWorld . creatures . ix cid)
             || bl
 
diff --git a/src/Dodge/Bullet.hs b/src/Dodge/Bullet.hs
index 372c30a6a..4567734c7 100644
--- a/src/Dodge/Bullet.hs
+++ b/src/Dodge/Bullet.hs
@@ -17,6 +17,7 @@ import Geometry
 import LensHelp
 import qualified ListHelp as List
 import System.Random
+import Linear
 
 updateBullet :: World -> Bullet -> (World, Maybe Bullet)
 updateBullet w bu
@@ -108,7 +109,8 @@ updateBulVel bt = bt & buVel .*.*~ _buDrag bt
 
 bounceDir :: IM.IntMap Item -> (Point2, Either Creature Wall) -> Maybe Point2
 bounceDir _ (_, Right wl) | _wlBouncy wl = Just $ uncurry (-) (_wlLine wl)
-bounceDir m (p, Left cr) | crIsArmouredFrom m p cr = Just $ vNormal $ p - _crPos cr
+bounceDir m (p, Left cr) | crIsArmouredFrom m p cr 
+    = Just $ vNormal $ p - (cr ^. crPos . _xy)
 bounceDir _ _ = Nothing
 
 useBulletPayload :: Bullet -> Point2 -> World -> World
diff --git a/src/Dodge/Creature.hs b/src/Dodge/Creature.hs
index daaf83f13..40611b806 100644
--- a/src/Dodge/Creature.hs
+++ b/src/Dodge/Creature.hs
@@ -92,8 +92,8 @@ ID 0.
 startCr :: Creature
 startCr =
     defaultCreature
-        & crPos .~ V2 20 0
-        & crOldPos .~ V2 20 0
+        & crPos .~ V3 20 0 0
+        & crOldPos .~ V3 20 0 0
         & crDir .~ pi / 2
         & crMvDir .~ pi / 2
         & crID .~ 0
diff --git a/src/Dodge/Creature/Action.hs b/src/Dodge/Creature/Action.hs
index 9f13d1928..b75d425d7 100644
--- a/src/Dodge/Creature/Action.hs
+++ b/src/Dodge/Creature/Action.hs
@@ -13,6 +13,7 @@ module Dodge.Creature.Action (
     youDropItem,
 ) where
 
+import Linear
 import NewInt
 import Dodge.Creature.MoveType
 import Dodge.Creature.Radius
@@ -49,13 +50,13 @@ performAimAt :: Creature -> World -> Int -> Point2 -> OutAction
 performAimAt cr w tcid p = ([TurnToward tpos aimSp], Just $ AimAt tcid tpos)
   where
     cdir = _crDir cr
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     canSee' = canSee (_crID cr) tcid w
     aimSp = case crMvType cr ^? mvAimSpeed of
         Just f -> doFloatFloat f $ safeAngleVV (unitVectorAtAngle cdir) (tpos - cpos)
         Nothing -> error "creature without aiming type"
     tpos
-        | canSee' = w ^?! cWorld . lWorld . creatures . ix tcid . crPos
+        | canSee' = w ^?! cWorld . lWorld . creatures . ix tcid . crPos . _xy
         | otherwise = p
 
 performPathTo :: Creature -> World -> Point2 -> OutAction
@@ -73,7 +74,7 @@ performPathTo cr w p
             )
         _ -> ([], Nothing)
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     jit = _mvTurnJit $ crMvType cr
 
 performTurnToA :: Creature -> Point2 -> OutAction
@@ -81,7 +82,7 @@ performTurnToA cr p
     | angleVV cdirv dirv < 0.1 = ([], Nothing)
     | otherwise = ([MvTurnToward p, RandomTurn jit], Just (TurnToPoint p))
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     cdirv = unitVectorAtAngle (_crDir cr)
     dirv = p -.- cpos
     jit = _mvTurnJit $ crMvType cr
@@ -121,15 +122,15 @@ performAction cr w ac = case ac of
     DoActions acs ->
         let (imps, newAcs) = unzip $ map (performAction cr w) acs
          in (concat imps, Just . DoActions $ catMaybes newAcs)
-    StartSentinelPost -> ([AddGoal $ SentinelAt (_crPos cr) (_crDir cr)], Nothing)
+    StartSentinelPost -> ([AddGoal $ SentinelAt (cr ^. crPos . _xy) (_crDir cr)], Nothing)
     PathTo p -> performPathTo cr w p
     TurnToPoint p -> performTurnToA cr p
     LeadTarget p -> case cr ^? crIntention . targetCr . _Just of
-        Just tcr -> ([TurnTo (_crPos tcr +.+ rotateV (_crDir tcr) p)], Nothing)
+        Just tcr -> ([TurnTo (tcr ^. crPos . _xy +.+ rotateV (_crDir tcr) p)], Nothing)
         _ -> ([], Nothing)
     UseTarget f -> performAction cr w $ doMCrAc f $ cr ^? crIntention . targetCr . _Just
     UseSelf f -> performAction cr w $ doCrAc f cr
-    UseAheadPos f -> performAction cr w (doP2Ac f (_crPos cr +.+ 20 *.* unitVectorAtAngle (_crDir cr)))
+    UseAheadPos f -> performAction cr w (doP2Ac f (cr ^. crPos . _xy +.+ 20 *.* unitVectorAtAngle (_crDir cr)))
     UseMvTargetPos f -> performAction cr w $ doMP2Ac f $ _mvToPoint $ _crIntention cr
     ArbitraryAction f -> performAction cr w (doCrWdAc f cr w)
     DoImpulsesAlongside sideImp mainAc -> case performAction cr w mainAc of
@@ -175,10 +176,10 @@ dropItem :: Creature -> Int -> World -> World
 dropItem cr invid w' =
     doanyitemdropeffect
         . maybeshiftseldown
-        . copyItemToFloor (_crPos cr) itm -- . mayberemoveequip
+        . copyItemToFloor (cr ^. crPos . _xy) itm -- . mayberemoveequip
         . rmInvItem (_crID cr) (NInt invid) -- it is important 
             -- to do this before copying the item to the floor!
-        . soundStart (CrSound (_crID cr)) (_crPos cr) whiteNoiseFadeOutS Nothing
+        . soundStart (CrSound (_crID cr)) (cr ^. crPos . _xy) whiteNoiseFadeOutS Nothing
         $ w'
   where
     --doanyitemdropeffect = fromMaybe id $ do
diff --git a/src/Dodge/Creature/Action/Blink.hs b/src/Dodge/Creature/Action/Blink.hs
index 60978788f..805b58af0 100644
--- a/src/Dodge/Creature/Action/Blink.hs
+++ b/src/Dodge/Creature/Action/Blink.hs
@@ -5,6 +5,7 @@ module Dodge.Creature.Action.Blink (
     unsafeBlinkAction,
 ) where
 
+import Linear
 import Dodge.Creature.Radius
 import Dodge.Zoning.Wall
 import Data.Maybe
@@ -25,13 +26,13 @@ blinkActionMousePos cr w =
     w
         & soundMultiFrom [TeleSound 0, TeleSound 1] p3 teleS Nothing
         & blinkDistortions cpos p3
-        & cWorld . lWorld . creatures . ix cid . crPos .~ p3
+        & cWorld . lWorld . creatures . ix cid . crPos . _xy .~ p3
         & blinkShockwave cid p3
         & inverseShockwaveAt (cpos `v2z` 20) 40 2 2
   where
     cid = _crID cr
     p1 = w ^. cWorld . lWorld . lAimPos
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     --p2 = bouncePoint (const True) 1 cpos p1 w
     p2 = pushIntoMaybe $ collideCircWalls cpos p1 r (wlsNearSeg cpos p1 w)
     r = crRad $ cr ^. crType
@@ -61,7 +62,7 @@ unsafeBlinkAction cr w
     | success =
         soundMultiFrom [TeleSound 0, TeleSound 1] mwp teleS Nothing
             . blinkDistortions cpos mwp
-            . set (cWorld . lWorld . creatures . ix cid . crPos) mwp
+            . set (cWorld . lWorld . creatures . ix cid . crPos . _xy) mwp
             . blinkShockwave cid mwp
             $ inverseShockwaveAt (cpos `v2z` 20) 40 2 2 w
     | otherwise =
@@ -74,7 +75,7 @@ unsafeBlinkAction cr w
         return (isLHS mwp `uncurry` _wlLine wl)
     cid = _crID cr
     mwp = w ^. cWorld . lWorld . lAimPos
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
 
 blinkShockwave ::
     -- | Blinking creature ID.
@@ -93,14 +94,14 @@ blinkActionFail cr w =
     w
         & soundMultiFrom [TeleSound 0, TeleSound 1] p3 teleS Nothing
         & cWorld . lWorld . distortions .:~ distortionBulge
-        & cWorld . lWorld . creatures . ix cid . crPos .~ p3
+        & cWorld . lWorld . creatures . ix cid . crPos . _xy .~ p3
         & inverseShockwaveAt (cpos `v2z` 20) 40 2 2
   where
     distR = 120
     distortionBulge = RadialDistortion cpos (cpos +.+ V2 distR 0) (cpos +.+ V2 0 distR) 1.9
     cid = _crID cr
     p1 = w ^. cWorld . lWorld . lAimPos
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     p2 = bouncePoint (const True) 1 cpos p1 w
     r = 1.5 * crRad (cr ^. crType)
     p3 = maybe p1 (mvPointTowardAtSpeed r cpos . fst) p2
diff --git a/src/Dodge/Creature/Boid.hs b/src/Dodge/Creature/Boid.hs
index 3452591ce..4d25f583c 100644
--- a/src/Dodge/Creature/Boid.hs
+++ b/src/Dodge/Creature/Boid.hs
@@ -1,5 +1,6 @@
 module Dodge.Creature.Boid where
 
+import Linear
 import Dodge.Creature.Radius
 import Control.Lens
 import Control.Monad.Reader
@@ -16,28 +17,28 @@ invertEncircleDistP d tcr cenp cr =
     ypos
         +.+ d *.* reflectIn (cenp -.- ypos) (squashNormalizeV (cpos -.- cenp))
   where
-    cpos = _crPos cr
-    ypos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    ypos = tcr ^. crPos . _xy
 
 encircleDistP :: Float -> Creature -> Point2 -> Creature -> Point2
 encircleDistP d tcr cenp cr = ypos +.+ d *.* squashNormalizeV (cpos -.- cenp)
   where
-    cpos = _crPos cr
-    ypos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    ypos = tcr ^. crPos . _xy
 
 encircleP :: Creature -> Point2 -> Creature -> Point2
 encircleP tcr cenp cr = ypos +.+ 50 *.* squashNormalizeV (cpos -.- cenp)
   where
-    cpos = _crPos cr
-    ypos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    ypos = tcr ^. crPos . _xy
 
 --f x = 150 * sigmoid (x-10)
 
 encircleCloseP :: Creature -> Point2 -> Creature -> Point2
 encircleCloseP tcr cenp cr = ypos +.+ f (max 0 (magV (ypos -.- cenp) - 80)) *.* squashNormalizeV (cpos -.- cenp)
   where
-    cpos = _crPos cr
-    ypos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    ypos = tcr ^. crPos . _xy
     f x = 150 * sigmoid (x -10)
 
 forbidFlee ::
@@ -50,8 +51,8 @@ forbidFlee f tcr cenp cr
     | ptargTest = tpos
     | otherwise = ptarg
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     ptarg = f tcr cenp cr
     ptargTest = isLHS cpos (cpos +.+ rotateV (negate (pi / 2)) (cpos -.- tpos)) ptarg
 
@@ -61,8 +62,8 @@ forbidFlee f tcr cenp cr
 pincerP :: Creature -> Point2 -> Creature -> Point2
 pincerP tcr cenp cr = tpos +.+ splitp -- +.+ 25 *.* (normalizeV $ tpos -.- cenp)
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     splitp
         | isLHS cenp cpos tpos =
             150 *.* orthCenpTpos
@@ -75,8 +76,8 @@ pincerP tcr cenp cr = tpos +.+ splitp -- +.+ 25 *.* (normalizeV $ tpos -.- cenp)
 pincerP''' :: Creature -> Point2 -> Creature -> Point2
 pincerP''' tcr cenp cr = interpWith (sigmoid $ 0.05 * dtcen) cenawayp cenclosep
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     dtcen = dist tpos cenp
     f x = 150 * sigmoid (x -10)
     cenawayp
@@ -97,8 +98,8 @@ pincerP' tcr cenp cr
         cenp +.+ f (max 0 (magV (tpos -.- cenp) - 80)) *.* squashNormalizeV (cpos -.- cenp)
     | otherwise = tpos +.+ f (max 0 (magV (tpos -.- cenp) - 80)) *.* squashNormalizeV (cpos -.- cenp)
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     f x = 150 * sigmoid (x -10)
 
 pincerP'' :: Creature -> Point2 -> Creature -> Point2
@@ -109,8 +110,8 @@ pincerP'' tcr cenp cr
         cenp +.+ f (max 0 (magV (tpos -.- cenp) - 80)) *.* squashNormalizeV (vNormal $ cenp -.- tpos)
     | otherwise = tpos +.+ f (max 0 (magV (tpos -.- cenp) - 80)) *.* squashNormalizeV (cpos -.- cenp)
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     f x = 150 * sigmoid (x -10)
 
 encircle :: Creature -> IM.IntMap Creature -> Creature -> Point2
@@ -118,17 +119,17 @@ encircle tcr crs cr
     | length crs <= 1 = ypos
     | otherwise = ypos +.+ f (max 0 (magV (ypos -.- cenp) - 80)) *.* squashNormalizeV (cpos -.- cenp)
   where
-    cpos = _crPos cr
-    ypos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    ypos = tcr ^. crPos . _xy
     f x = 150 * sigmoid (x -10)
-    cenp = centroid (map _crPos $ IM.elems crs)
+    cenp = centroid (map (^. crPos . _xy) $ IM.elems crs)
 
 lineOrth :: Creature -> IM.IntMap Creature -> Creature -> Point2
 lineOrth tcr crs cr = p
   where
-    ypos = _crPos tcr
-    cpos = _crPos cr
-    ps = map _crPos $ IM.elems crs
+    ypos = tcr ^. crPos . _xy
+    cpos = cr  ^. crPos . _xy
+    ps = map (^. crPos . _xy) $ IM.elems crs
     cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
     p
         | dist cen ypos < 20 = ypos
@@ -137,10 +138,11 @@ lineOrth tcr crs cr = p
 holdForm :: Creature -> IM.IntMap Creature -> Creature -> Point2
 holdForm ycr crs cr = p
   where
-    ypos = _crPos ycr
-    cpos = _crPos cr
-    ps = map _crPos $ IM.elems crs
-    cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
+    ypos = ycr ^. crPos . _xy
+    cpos = cr  ^. crPos . _xy
+    ps = map (^. crPos . _xy) $ IM.elems crs
+    cen = centroid ps
+    --cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
     p
         | dist cen ypos < 20 = ypos
         | otherwise = ypos +.+ cpos -.- cen
@@ -148,20 +150,22 @@ holdForm ycr crs cr = p
 lineUp :: Creature -> IM.IntMap Creature -> Creature -> Point2
 lineUp ycr crs cr = p
   where
-    ypos = _crPos ycr
-    cpos = _crPos cr
-    ps = map _crPos $ IM.elems crs
-    cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
+    ypos = ycr ^. crPos . _xy
+    cpos = cr  ^. crPos . _xy
+    ps = map (^. crPos . _xy) $ IM.elems crs
+    --cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
+    cen = centroid ps
     p = (0.05 *.* ypos) +.+ (0.95 *.* errorClosestPointOnLine 500 cen ypos cpos)
 
 -- not nice, a kind of encircle
 spreadOut :: Creature -> IM.IntMap Creature -> Creature -> Point2
 spreadOut ycr crs cr = p
   where
-    ypos = _crPos ycr
-    cpos = _crPos cr
-    ps = map _crPos $ IM.elems crs
-    cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
+    ypos = ycr ^. crPos . _xy
+    cpos = cr  ^. crPos . _xy
+    ps = map (^. crPos . _xy) $ IM.elems crs
+    cen = centroid ps
+    -- cen = (1 / fromIntegral (length ps)) *.* foldr1 (+.+) ps
     p
         | dist cen ypos < 30 = ypos
         | otherwise = ypos +.+ (spreadFactor *.* cpos -.- cen)
@@ -307,8 +311,8 @@ meleeHeadingMove maxta minta tacutoff speed tp cr tcr
         [MoveForward speed, TurnToward tp maxta, RandomTurn maxta]
     | otherwise = [MoveForward speed, TurnToward tp minta, RandomTurn maxta]
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     combinedRad = crRad (cr ^. crType) + crRad (tcr ^. crType)
 
 mvPointMeleeTarg :: Point2 -> Creature -> Creature -> [Impulse]
@@ -324,6 +328,6 @@ mvPointMeleeTarg p cr crT
         [MoveForward 3, TurnToward p 0.2, RandomTurn 0.2]
     | otherwise = [MoveForward 3, TurnToward p 0.05, RandomTurn 0.2]
   where
-    cpos = _crPos cr
-    tpos = _crPos crT
+    cpos = cr  ^. crPos . _xy
+    tpos = crT ^. crPos . _xy
     combinedRad = crRad (cr ^. crType) + crRad (crT ^. crType)
diff --git a/src/Dodge/Creature/ChooseTarget.hs b/src/Dodge/Creature/ChooseTarget.hs
index 067be5a6c..f811fc795 100644
--- a/src/Dodge/Creature/ChooseTarget.hs
+++ b/src/Dodge/Creature/ChooseTarget.hs
@@ -3,16 +3,17 @@ module Dodge.Creature.ChooseTarget where
 import Control.Lens
 import Dodge.Base
 import Dodge.Data.World
+import Linear
 
 targetYouLOS :: Creature -> World -> Maybe Creature
 {-# INLINE targetYouLOS #-}
 targetYouLOS cr w
-    | hasLOS (_crPos cr) (_crPos $ you w) w = Just $ you w
+    | hasLOS (cr ^. crPos . _xy) ( you w ^. crPos . _xy) w = Just $ you w
     | otherwise = Nothing
 
 targetYouCognizant :: Creature -> World -> Maybe Creature
 targetYouCognizant cr w
-    | hasLOS (_crPos cr) (_crPos $ you w) w
+    | hasLOS (cr ^. crPos . _xy) (you w ^. crPos . _xy) w
         && isCog (cr ^? crPerception . cpAwareness . ix 0) =
         Just $ you w
     | otherwise = Nothing
diff --git a/src/Dodge/Creature/Damage.hs b/src/Dodge/Creature/Damage.hs
index 19d60038f..5e5e241ed 100644
--- a/src/Dodge/Creature/Damage.hs
+++ b/src/Dodge/Creature/Damage.hs
@@ -1,5 +1,6 @@
 module Dodge.Creature.Damage (applyCreatureDamage) where
 
+import Linear
 import Dodge.Material.Damage
 import Data.List
 import Dodge.Creature.Mass
@@ -25,11 +26,11 @@ applyPiercingDamage cr dm w
         = f . makeSpark NormalSpark p1 (argV (p1 - p)) $ w
     | otherwise = f . damageHP cr (_dmAmount dm) $ w
   where
-    f = cWorld . lWorld . creatures . ix (_crID cr) . crPos +~ _dmVector dm
+    f = cWorld . lWorld . creatures . ix (_crID cr) . crPos . _xy +~ _dmVector dm
             / V2 x x
     x = crMass (_crType cr)
     p = _dmPos dm
-    p1 = p + 2 *.* squashNormalizeV (p - _crPos cr)
+    p1 = p + 2 *.* squashNormalizeV (p - cr ^. crPos . _xy)
 
 damageHP :: Creature -> Int -> World -> World
 damageHP cr x =
diff --git a/src/Dodge/Creature/Impulse.hs b/src/Dodge/Creature/Impulse.hs
index 949638aa7..29ab44a82 100644
--- a/src/Dodge/Creature/Impulse.hs
+++ b/src/Dodge/Creature/Impulse.hs
@@ -1,9 +1,8 @@
 {-# LANGUAGE TupleSections #-}
 
-module Dodge.Creature.Impulse (
-    impulsiveAIBefore,
-) where
+module Dodge.Creature.Impulse (impulsiveAIBefore) where
 
+import Linear
 import NewInt
 import Dodge.Creature.MoveType
 import Data.Foldable
@@ -58,7 +57,7 @@ followImpulse cr w imp = case imp of
         , crMvAbsolute (w ^. cWorld . lWorld) (10 *.* normalizeV (posFromID cid' -.- cpos)) $ cr & crType . meleeCooldown .~ 20
         )
     RandomTurn a -> (randGen .~ snd (rr a), cr & crDir +~ fst (rr a))
-    MakeSound sid -> (soundStart (CrSound (_crID cr)) (_crPos cr) sid Nothing, cr)
+    MakeSound sid -> (soundStart (CrSound (_crID cr)) (cr ^. crPos . _xy) sid Nothing, cr)
     DropItem -> undefined
     ChangeStrategy strat -> crup $ cr & crActionPlan . apStrategy .~ strat
     AddGoal gl -> crup $ cr & crActionPlan . apGoal .:~ gl
@@ -71,7 +70,7 @@ followImpulse cr w imp = case imp of
     ImpulseUseTarget f -> case cr ^? crIntention . targetCr . _Just of
         Just tcr -> followImpulse cr w (doCrImp f tcr)
         _ -> crup cr
-    ImpulseUseAheadPos f -> followImpulse cr w (doP2Imp f (_crPos cr +.+ 20 *.* unitVectorAtAngle (_crDir cr)))
+    ImpulseUseAheadPos f -> followImpulse cr w (doP2Imp f (cr ^. crPos . _xy +.+ 20 *.* unitVectorAtAngle (_crDir cr)))
     MvForward -> crup $ crMvForward speed (w ^. cWorld . lWorld) cr
     MvTurnToward p ->
         crup $
@@ -81,10 +80,10 @@ followImpulse cr w imp = case imp of
     mvType = crMvType cr
     speed = _mvSpeed mvType
     turnRad = doFloatFloat $ _mvTurnRad mvType
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     cdir = _crDir cr
     cid = _crID cr
-    posFromID cid' = w ^?! cWorld . lWorld . creatures . ix cid' . crPos
+    posFromID cid' = w ^?! cWorld . lWorld . creatures . ix cid' . crPos . _xy
     rr a = randomR (- a, a) $ _randGen w
     hitCr i =
          cWorld . lWorld . creatures . ix i . crDamage
diff --git a/src/Dodge/Creature/Impulse/Flee.hs b/src/Dodge/Creature/Impulse/Flee.hs
index e962b85b6..161ace2c7 100644
--- a/src/Dodge/Creature/Impulse/Flee.hs
+++ b/src/Dodge/Creature/Impulse/Flee.hs
@@ -1,16 +1,17 @@
 module Dodge.Creature.Impulse.Flee where
 
+import Control.Lens
+import Linear
 import Dodge.Data.World
 import FoldableHelp
 import Geometry
 
-retreatPointForFrom ::
-    Float -> World -> Creature -> Point2 -> Maybe Point2
+retreatPointForFrom :: Float -> World -> Creature -> Point2 -> Maybe Point2
 retreatPointForFrom d _ cr p =
     safeMinimumOn (dist cpos) $
         divideCircle 10 p d
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
 
 --    = head $ sortBy (compare `on` (\p -> dist p ypos < 300)) $ retreatP'' : retreatPs
 --  where
diff --git a/src/Dodge/Creature/Impulse/Movement.hs b/src/Dodge/Creature/Impulse/Movement.hs
index 4462d5193..ef942a0a0 100644
--- a/src/Dodge/Creature/Impulse/Movement.hs
+++ b/src/Dodge/Creature/Impulse/Movement.hs
@@ -7,6 +7,7 @@ module Dodge.Creature.Impulse.Movement (
     creatureTurnTo,
 ) where
 
+import Linear
 import Control.Lens
 import Dodge.Base
 import Dodge.Creature.Statistics
@@ -28,7 +29,7 @@ crMvBy p lw cr = crMvAbsolute lw (rotateV (_crDir cr) p) cr
 crMvAbsolute :: LWorld -> Point2 -> Creature -> Creature
 crMvAbsolute lw p' cr =
     advanceStepCounter (magV p) cr
-        & crPos +~ p
+        & crPos . _xy +~ p
         & crMvDir .~ argV p
   where
     p = strengthFactor (getCrMoveSpeed lw cr) *.* p'
@@ -55,7 +56,7 @@ creatureTurnTo p cr
     | vToTarg == V2 0 0 = cr -- this should deal with the angleVV error
     | otherwise = cr & crDir .~ dirToTarget
   where
-    vToTarg = p -.- _crPos cr
+    vToTarg = p -.- cr ^. crPos . _xy
     dirToTarget = argV vToTarg
 
 -- the following is perhaps not ideal because it mixes normalizeAngle with
@@ -80,5 +81,5 @@ creatureTurnToward p turnSpeed cr
     | isLeftOfA (normalizeAngle dirToTarget) (normalizeAngle $ _crDir cr) = cr & crDir +~ turnSpeed
     | otherwise = cr & crDir -~ turnSpeed
   where
-    vToTarg = p -.- _crPos cr
+    vToTarg = p -.- cr ^. crPos . _xy
     dirToTarget = argV vToTarg
diff --git a/src/Dodge/Creature/Perception.hs b/src/Dodge/Creature/Perception.hs
index 37222ea28..c5a6ba853 100644
--- a/src/Dodge/Creature/Perception.hs
+++ b/src/Dodge/Creature/Perception.hs
@@ -95,7 +95,7 @@ chaseCritAwarenessUpdate w cr = case _cpAttention $ _crPerception cr of
                                   replicate numjits [RandomImpulse thejitter]
                                     ++ [[ChangeStrategy $ CloseToMelee 0]]
                                 )
-                            , AimAt 0 (w ^?! cWorld . lWorld . creatures . ix 0 . crPos)
+                            , AimAt 0 (w ^?! cWorld . lWorld . creatures . ix 0 . crPos . _xy)
                             ]
             | otherwise = id
 
@@ -147,14 +147,14 @@ newExtraAwareness cr w cid
     | not $ canSeeIndirect (_crID cr) cid w = Nothing
     | otherwise = Just . Suspicious $ visionCheck cr tpos * awakeLevelPerception cr
   where
-    tpos = w ^?! cWorld . lWorld . creatures . ix cid . crPos -- _crPos $ _creatures (_cWorld w) IM.! cid
-    cpos = _crPos cr
+    tpos = w ^?! cWorld . lWorld . creatures . ix cid . crPos . _xy -- _crPos $ _creatures (_cWorld w) IM.! cid
+    cpos = cr ^. crPos . _xy
 
 visionCheck :: Creature -> Point2 -> Float
 visionCheck cr tpos = doFloatFloat (_viFOV vi) ang * doFloatFloat (_viDist vi) d
   where
     vi = _cpVision $ _crPerception cr
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     dirvec = unitVectorAtAngle (_crDir cr)
     ang = angleVV dirvec (tpos - (cpos - crRad (cr ^. crType) *^ dirvec))
     d = dist tpos cpos
@@ -187,4 +187,4 @@ soundIsClose w cr (pos, vol) =
         && vol > doFloatFloat (_auDist . _cpAudition $ _crPerception cr) (dist pos cpos)
         && hasLOS cpos pos w
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
diff --git a/src/Dodge/Creature/Picture/Awareness.hs b/src/Dodge/Creature/Picture/Awareness.hs
index 94bbc3c0c..f759120e0 100644
--- a/src/Dodge/Creature/Picture/Awareness.hs
+++ b/src/Dodge/Creature/Picture/Awareness.hs
@@ -1,5 +1,6 @@
 module Dodge.Creature.Picture.Awareness where
 
+import Linear (_xy)
 import Dodge.Creature.Radius
 import qualified Data.Vector as V
 import Dodge.Clock
@@ -31,7 +32,7 @@ creatureDisplayText w cr =
     lw = w ^. cWorld . lWorld
     campos = w ^. wCam . camViewFrom
     theScale = 0.15 / (w ^. wCam . camZoom)
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     v = cpos -.- campos
     (V2 x y) = campos +.+ v +.+ crRad (cr ^. crType) *.* normalizeV v
 
diff --git a/src/Dodge/Creature/ReaderUpdate.hs b/src/Dodge/Creature/ReaderUpdate.hs
index 31f1789a2..0cdf310ad 100644
--- a/src/Dodge/Creature/ReaderUpdate.hs
+++ b/src/Dodge/Creature/ReaderUpdate.hs
@@ -13,6 +13,7 @@ module Dodge.Creature.ReaderUpdate (
     setViewPos,
 ) where
 
+import Linear
 import Dodge.Creature.Vocalization
 import Dodge.Creature.Radius
 import RandomHelp
@@ -47,16 +48,16 @@ tryMeleeAttack cr tcr
             & crActionPlan . apStrategy .~ MeleeStrike
     | otherwise = cr
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
 
 setMvPos :: World -> Creature -> Creature
 setMvPos w cr = cr & crIntention . mvToPoint .~ mpos
   where
     int = _crIntention cr
     mtpos = do
-        tpos <- _crPos <$> _targetCr int
-        guard $ hasLOSIndirect (_crPos cr) tpos w
+        tpos <- (^. crPos . _xy) <$> _targetCr int
+        guard $ hasLOSIndirect (cr ^. crPos . _xy) tpos w
         return tpos
     mpos = mtpos <|> _mvToPoint int
 
@@ -70,8 +71,8 @@ attentionViewPoint w cr = do
     attention <- cr ^? crPerception . cpAttention . getAttentiveTo
     cid <- sortOn snd (IM.toList attention) ^? ix 0 . _1
     tcr <- w ^? cWorld . lWorld . creatures . ix cid
-    guard $ visionCheck cr (_crPos tcr) > 0
-    return (_crPos tcr)
+    guard $ visionCheck cr (tcr ^. crPos . _xy) > 0
+    tcr ^? crPos . _xy
 
 setTargetMv ::
     -- | Function for determining target
@@ -82,7 +83,7 @@ setTargetMv ::
 setTargetMv targFunc w cr =
     maybe
         cr
-        (\ctarg -> cr & crIntention . mvToPoint ?~ _crPos ctarg)
+        (\ctarg -> cr & crIntention . mvToPoint ?~ (ctarg ^. crPos . _xy))
         (targFunc w cr)
 
 -- ugly
@@ -90,14 +91,14 @@ flockACC :: World -> Creature -> Creature
 flockACC w cr = case cr ^? crIntention . targetCr . _Just of
     Nothing -> cr
     Just tcr ->
-        let tpos = _crPos tcr
-            cpos = _crPos cr
+        let tpos = tcr ^. crPos . _xy
+            cpos = cr  ^. crPos . _xy
             isFarACC cr' =
                 _crGroup cr' == _crGroup cr
                     && _crID cr' /= _crID cr
-                    && dist (_crPos cr') tpos > dist cpos tpos
+                    && dist (cr' ^. crPos . _xy) tpos > dist cpos tpos
             macr =
-                safeMinimumOn (dist cpos . _crPos)
+                safeMinimumOn (dist cpos . (^. crPos . _xy))
                     . filter isFarACC
                     $ crsNearCirc cpos 50 w
          in case macr of
@@ -106,7 +107,7 @@ flockACC w cr = case cr ^? crIntention . targetCr . _Just of
                     let r = crRad (acr ^. crType) + crRad (cr ^. crType) + 10
                         horDir = normalizeV (vNormal (cpos -.- tpos))
                         horShift =
-                            if isLHS tpos cpos (_crPos acr)
+                            if isLHS tpos cpos (acr ^. crPos . _xy)
                                 then r *.* horDir
                                 else negate r *.* horDir
                      in cr & crIntention . mvToPoint ?~ tpos +.+ horShift
@@ -128,7 +129,7 @@ chaseCritMv w cr = case _apStrategy (_crActionPlan cr) of
         numjits = fst $ randomR (15, 25) (_randGen w)
     _ -> case cr ^? crIntention . mvToPoint . _Just of
         Just p
-            | dist (_crPos cr) p > crRad (cr ^. crType) -> cr & crActionPlan . apAction .~ [PathTo p]
+            | dist (cr ^. crPos . _xy) p > crRad (cr ^. crType) -> cr & crActionPlan . apAction .~ [PathTo p]
             | otherwise ->
                 cr & crActionPlan . apAction .~ [bfsThenReturn 500 `DoActionThen` DoImpulses [ChangeStrategy WatchAndWait]]
                     & crActionPlan . apStrategy .~ WatchAndWait
@@ -146,7 +147,7 @@ goToTarget w cr = case cr ^? crIntention . mvToPoint . _Just of
 viewTarget :: World -> Creature -> Creature
 viewTarget w cr = case cr ^? crIntention . viewPoint . _Just of
     Just p
-        | hasLOSIndirect p (_crPos cr) w ->
+        | hasLOSIndirect p (cr ^. crPos . _xy) w ->
             cr
                 & crActionPlan . apAction
                     .~ [TurnToPoint p]
@@ -210,7 +211,7 @@ searchIfDamaged cr
             & crActionPlan . apStrategy
                 .~ StrategyActions
                     LookAround
-                    [ TurnToPoint (_crPos cr -.- unitVectorAtAngle (_crDir cr))
+                    [ TurnToPoint (cr ^. crPos . _xy -.- unitVectorAtAngle (_crDir cr))
                         `DoActionThen` 40 `WaitThen` bfsThenReturn 500
                     ]
     | otherwise = cr
diff --git a/src/Dodge/Creature/State.hs b/src/Dodge/Creature/State.hs
index 872894cec..1179a768d 100644
--- a/src/Dodge/Creature/State.hs
+++ b/src/Dodge/Creature/State.hs
@@ -4,6 +4,7 @@ module Dodge.Creature.State (
     invItemEffs,
 ) where
 
+import Linear
 import NewInt
 import Control.Applicative
 import Control.Monad
@@ -121,7 +122,7 @@ coolMachinePistol cr itm w
     dosound s =
         soundContinue
             (CrWeaponSound (_crID cr) (fromIntegral $ _itID itm))
-            (_crPos cr)
+            (cr ^. crPos . _xy)
             s
             (Just 1)
     d = pointerToItem itm . itParams
@@ -227,7 +228,7 @@ shineTargetLaser cr loc w = fromMaybe (w & pointittarg . itTgPos .~ Nothing) $ d
     x = 1
     isammolink AmmoMagSF{} = True
     isammolink _ = False
-    pos = _crPos cr + xyV3 (rotate3 cdir p)
+    pos = cr ^. crPos . _xy + xyV3 (rotate3 cdir p)
     cdir = _crDir cr
     itm = itmtree ^. dtValue . _1
     pointittarg = cWorld . lWorld . items . ix itid . itTargeting
@@ -251,7 +252,7 @@ shineTorch cr loc = fromMaybe id $ do
     x = 10
     isammolink AmmoMagSF{} = True
     isammolink _ = False
-    pos = _crPos cr `v2z` 0 + rotate3 cdir (p + Q.rotate q (V3 5 0 1.5))
+    pos = _crPos cr + rotate3 cdir (p + Q.rotate q (V3 5 0 1.5))
     cdir = _crDir cr
 
 -- this probably needs to be set to null when dropped as well?
@@ -295,18 +296,18 @@ setRBCreatureTargeting cr w ituse
     | otherwise = ituse & itTgID .~ fmap _crID newtarg & updatePos & itTgActive .~ False
   where
     newtarg =
-        safeMinimumOn (dist mwp . _crPos)
-            . filter (canseepos . _crPos)
+        safeMinimumOn (dist mwp . (^. crPos . _xy))
+            . filter (canseepos . (^. crPos . _xy))
             $ crsNearCirc mwp 40 w
-    canseepos p = hasLOS (_crPos cr) p w
+    canseepos p = hasLOS ((^. crPos . _xy) cr) p w
     mwp = w ^. cWorld . lWorld . lAimPos
     updatePos t' = t' & itTgPos .~ posFromMaybeID (_itTgID t')
-    posFromMaybeID Nothing = Nothing
-    posFromMaybeID (Just i) = w ^? cWorld . lWorld . creatures . ix i . crPos
+    posFromMaybeID Nothing = Nothing 
+    posFromMaybeID (Just i) = w ^? cWorld . lWorld . creatures . ix i . crPos . _xy
     canSeeTarget = fromMaybe False $ do
         cid <- ituse ^? itTgID . _Just
-        cpos <- w ^? cWorld . lWorld . creatures . ix cid . crPos
-        Just $ hasLOS cpos (_crPos cr) w
+        cpos <- w ^? cWorld . lWorld . creatures . ix cid . crPos . _xy
+        Just $ hasLOS cpos ( cr ^. crPos . _xy) w
 
 --isFrictionless :: Creature -> Bool
 --isFrictionless cr = case cr ^? crStance . carriage of
diff --git a/src/Dodge/Creature/State/WalkCycle.hs b/src/Dodge/Creature/State/WalkCycle.hs
index 0fc52af73..3878f6f77 100644
--- a/src/Dodge/Creature/State/WalkCycle.hs
+++ b/src/Dodge/Creature/State/WalkCycle.hs
@@ -2,6 +2,7 @@
 
 module Dodge.Creature.State.WalkCycle (updateWalkCycle) where
 
+import Linear
 import Control.Lens
 import Dodge.Data.World
 import Dodge.SoundLogic
@@ -15,7 +16,7 @@ updateWalkCycle cid w
         w
             & soundMultiFrom
                 [FootstepSound i | i <- [0 .. 10]]
-                (cr ^. crPos)
+                (cr ^. crPos . _xy)
                 (chooseFootSound ff)
                 Nothing
             & over (cWorld . lWorld . creatures . ix cid . crStance . carriage) resetStride
diff --git a/src/Dodge/Creature/Test.hs b/src/Dodge/Creature/Test.hs
index 46dfecf77..702ea9bb4 100644
--- a/src/Dodge/Creature/Test.hs
+++ b/src/Dodge/Creature/Test.hs
@@ -24,6 +24,7 @@ module Dodge.Creature.Test (
     crSafeDistFromTarg,
 ) where
 
+import Linear
 import NewInt
 import qualified Data.IntMap.Strict as IM
 import Dodge.Creature.Radius
@@ -49,7 +50,7 @@ import Geometry
 --    return (x > 0)
 
 crCanSeeCr :: Creature -> (World, Creature) -> Bool
-crCanSeeCr tcr (w, cr) = hasLOS (_crPos cr) (_crPos tcr) w
+crCanSeeCr tcr (w, cr) = hasLOS (cr ^. crPos . _xy) (tcr ^. crPos . _xy) w
 
 --crCanSeeCrid :: Int -> (World, Creature) -> Bool
 --crCanSeeCrid tcid (w, cr) = fromMaybe False $ do
@@ -71,7 +72,7 @@ crHasTargetLOS w cr = case cr ^? crIntention . targetCr . _Just of
 
 crSafeDistFromTarg :: Float -> Creature -> Bool
 crSafeDistFromTarg d cr = case cr ^? crIntention . targetCr . _Just of
-    Just tcr -> dist (_crPos cr) (_crPos tcr) > d
+    Just tcr -> dist (cr ^. crPos . _xy) (tcr ^. crPos . _xy) > d
     Nothing -> True
 
 crStratConMatches :: Strategy -> Creature -> Bool
@@ -81,7 +82,7 @@ crStratConMatches strat cr = strat == _apStrategy (_crActionPlan cr)
 
 crAwayFromPost :: Creature -> Bool
 crAwayFromPost cr = case find sentinelGoal . _apGoal $ _crActionPlan cr of
-    Just (SentinelAt p _) -> dist p (_crPos cr) > 15
+    Just (SentinelAt p _) -> dist p (cr ^. crPos . _xy) > 15
     _ -> False
   where
     sentinelGoal (SentinelAt _ _) = True
@@ -108,8 +109,9 @@ crIsArmouredFrom m p cr = fromMaybe False $ do
     ittype <- m ^? ix itid . itType
     return $
         EQUIP FRONTARMOUR == ittype
-            && p /= _crOldPos cr
-            && angleVV (unitVectorAtAngle (_crDir cr + frontarmdirection)) (p -.- _crOldPos cr) < pi / 2
+            && p /= ( cr ^. crOldPos  . _xy)
+            && angleVV (unitVectorAtAngle (_crDir cr + frontarmdirection)) 
+                (p -.- (cr ^. crOldPos . _xy)) < pi / 2
   where
     -- even though angleVV can generate NaN, the comparison seems to deal with it
     frontarmdirection
@@ -125,7 +127,7 @@ crIsArmouredFrom m p cr = fromMaybe False $ do
 --crNearSeg d p1 p2 cr = circOnSeg p1 p2 (_crPos cr) (_crRad cr + d)
 
 crNearPoint :: Float -> Point2 -> Creature -> Bool
-crNearPoint d p cr = dist (_crPos cr) p < d + crRad (cr ^. crType)
+crNearPoint d p cr = dist (cr ^. crPos . _xy) p < d + crRad (cr ^. crType)
 
 isAnimate :: Creature -> Bool
 {-# INLINE isAnimate #-}
diff --git a/src/Dodge/Creature/Update.hs b/src/Dodge/Creature/Update.hs
index 7a4d864b4..3c7d29288 100644
--- a/src/Dodge/Creature/Update.hs
+++ b/src/Dodge/Creature/Update.hs
@@ -1,5 +1,6 @@
 module Dodge.Creature.Update (updateCreature) where
 
+import Linear
 import NewInt
 import Color
 import qualified Data.IntMap.Strict as IM
@@ -31,8 +32,8 @@ import ShapePicture.Data
 updateCreature :: Creature -> World -> World
 updateCreature cr
     | null (cr ^? crHP . _HP) = id
-    | _crZ cr < negate 100 = (tocr . crHP .~ CrIsPitted) . destroyAllInvItems cr
-    | _crZ cr < 0 = (tocr . crZVel -~ 0.5) . (tocr . crZ +~ _crZVel cr)
+    | cr ^. crPos . _z < negate 100 = (tocr . crHP .~ CrIsPitted) . destroyAllInvItems cr
+    | cr ^. crPos . _z < 0 = (tocr . crZVel -~ 0.5) . (tocr . crPos . _z +~ _crZVel cr)
     | otherwise = updateCreature' cr
   where
     tocr = cWorld . lWorld . creatures . ix (_crID cr)
@@ -131,16 +132,16 @@ dropAll cr w = foldl' (flip (dropItem cr)) w . reverse . IM.keys . _unNIntMap $
 chasmTest :: Creature -> World -> World
 chasmTest cr w
     | _crZVel cr < 0 = w & tocr . crZVel -~ 0.5
-            & tocr . crZ +~ _crZVel cr
+            & tocr . crPos . _z +~ _crZVel cr
     | Just (x, y) <- List.find g (foldMap loopPairs $ w ^. cWorld . chasms) = w
-            & soundContinue (CrChasm (_crID cr)) (_crPos cr) debrisS (Just 100)
-            & tocr . crPos -~ normalizeV (vNormal (x - y))
+            & soundContinue (CrChasm (_crID cr)) (cr ^. crPos . _xy) debrisS (Just 100)
+            & tocr . crPos . _xy -~ normalizeV (vNormal (x - y))
     | any f (w ^. cWorld . chasms) = w & tocr . crZVel -~ 0.5
     | otherwise = w
   where
     tocr = cWorld . lWorld . creatures . ix (_crID cr)
-    g = uncurry $ circOnSeg (_crPos cr) (crRad $ cr ^. crType)
-    f = circInPolygon (_crPos cr) (crRad $ cr ^. crType)
+    g = uncurry $ circOnSeg (cr ^. crPos . _xy) (crRad $ cr ^. crType)
+    f = circInPolygon (cr ^. crPos . _xy) (crRad $ cr ^. crType)
 
 updatePulse :: Pulse -> Pulse
 updatePulse PulseStatus{_pulseRate = pr, _pulseProgress = pp}
diff --git a/src/Dodge/Creature/YourControl.hs b/src/Dodge/Creature/YourControl.hs
index a598a4d81..610ddff17 100644
--- a/src/Dodge/Creature/YourControl.hs
+++ b/src/Dodge/Creature/YourControl.hs
@@ -2,6 +2,7 @@
 
 module Dodge.Creature.YourControl (yourControl) where
 
+import Linear
 import Control.Monad
 import qualified Data.IntMap.Strict as IM
 import qualified Data.Map.Strict as M
@@ -139,7 +140,7 @@ wasdAim inp w cr
     | Aiming {} <- cr ^. crStance . posture = removeAimPosture cr
     | otherwise = creatureTurnTowardDir (_crMvAim cr) 0.2 cr
   where
-    mousedir = argV $ w ^. cWorld . lWorld . lAimPos - (cr ^. crPos)
+    mousedir = argV $ w ^. cWorld . lWorld . lAimPos - (cr ^. crPos . _xy)
 
 setAimPosture :: IM.IntMap Item -> Creature -> Creature
 setAimPosture m cr = fromMaybe cr $ do
diff --git a/src/Dodge/CreatureEffect.hs b/src/Dodge/CreatureEffect.hs
index f0ce9592f..6828795ec 100644
--- a/src/Dodge/CreatureEffect.hs
+++ b/src/Dodge/CreatureEffect.hs
@@ -1,5 +1,6 @@
 module Dodge.CreatureEffect where
 
+import Linear
 import Data.Maybe
 import Dodge.Base.Collide
 import Dodge.Creature.Test
@@ -28,7 +29,7 @@ doIntImp ii = case ii of
 doCrImp :: CrImp -> Creature -> Impulse
 doCrImp ci = case ci of
     NoCrImp -> const ImpulseNothing
-    TurnTowardCr x -> \cr -> TurnToward (_crPos cr) x
+    TurnTowardCr x -> \cr -> TurnToward (cr ^. crPos . _xy) x
 
 doP2Imp :: P2Imp -> Point2 -> Impulse
 doP2Imp p2i = case p2i of
@@ -60,7 +61,8 @@ doMCrAc mca = case mca of
 
 doCrAc :: CrAc -> Creature -> Action
 doCrAc ca = case ca of
-    CrTurnAround -> \cr -> TurnToPoint (_crPos cr -.- 10 *.* unitVectorAtAngle (_crDir cr))
+    CrTurnAround -> \cr -> TurnToPoint 
+        (cr ^. crPos . _xy -.- 10 *.* unitVectorAtAngle (_crDir cr))
     CrFleeFromTarget -> fleeFromTarget
 
 fleeFromTarget :: Creature -> Action
@@ -77,7 +79,7 @@ doMP2Ac mp2a = case mp2a of
 doCrWdAc :: CrWdAc -> Creature -> World -> Action
 doCrWdAc cw = case cw of
     CrWdBFSThenReturn t -> \cr w -> fromMaybe NoAction $ do
-        n <- walkableNodeNear w (_crPos cr)
+        n <- walkableNodeNear w (cr ^. crPos . _xy)
         let as = take 20 $ map PathTo $ bfsNodePoints n w
         return $
             DoReplicate t $
@@ -97,10 +99,10 @@ chooseMovementSpreadGun cr w
         DoImpulses [TurnToward p 0.26, MoveForward 3]
   where
     d = dist cpos p
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     --tcr = _creatures (_cWorld w) IM.! 0
     tcr = w ^?! cWorld . lWorld . creatures . ix 0
-    p = _crPos tcr
+    p = tcr ^. crPos . _xy
 
 chooseMovementLtAuto :: Creature -> World -> Action
 chooseMovementLtAuto cr w
@@ -111,13 +113,15 @@ chooseMovementLtAuto cr w
     | otherwise =
         DoImpulses [UseItem, TurnToward p' 0.05, Move (V2 0 3)]
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     tcr = w ^?! cWorld . lWorld . creatures . ix 0
-    p = _crPos tcr
+    p = tcr ^. crPos . _xy
     v = vNormal $ p -.- cpos
     p' = p +.+ 0.5 *.* (v -.- 20 *.* normalizeV v)
 
 fleeFrom :: Creature -> Maybe Creature -> Action
 fleeFrom cr mtcr = case mtcr of
-    Just tcr -> DoImpulses [MoveForward 3, TurnToward ((2 *.* _crPos cr) -.- _crPos tcr) (pi / 4)]
+    Just tcr -> DoImpulses 
+        [MoveForward 3
+        , TurnToward ((2 *.* (cr ^. crPos ._xy)) -.- (tcr ^. crPos . _xy)) (pi / 4)]
     Nothing -> NoAction
diff --git a/src/Dodge/Data/Creature.hs b/src/Dodge/Data/Creature.hs
index fc19e4de2..0b5f2eb24 100644
--- a/src/Dodge/Data/Creature.hs
+++ b/src/Dodge/Data/Creature.hs
@@ -37,9 +37,9 @@ import Geometry.Data
 --import qualified IntMapHelp as IM
 
 data Creature = Creature
-    { _crPos :: Point2
-    , _crOldPos :: Point2
-    , _crZ :: Float
+    { _crPos :: Point3
+    , _crOldPos :: Point3
+--    , _crZ :: Float
     , _crZVel :: Float
     , _crDir :: Float
     , _crMvDir :: Float
diff --git a/src/Dodge/Debug/Picture.hs b/src/Dodge/Debug/Picture.hs
index 79abcf5a4..098477d15 100644
--- a/src/Dodge/Debug/Picture.hs
+++ b/src/Dodge/Debug/Picture.hs
@@ -1,6 +1,7 @@
 {-# OPTIONS -Wno-incomplete-uni-patterns #-}
 module Dodge.Debug.Picture where
 
+import Linear (_xy)
 import Control.Lens
 import Data.Foldable
 import qualified Data.Graph.Inductive as FGL
@@ -211,7 +212,7 @@ drawPathBetween w = concat $ do
 
 drawWallsNearYou :: World -> Picture
 drawWallsNearYou w = concat $ do
-    p <- w ^? cWorld . lWorld . creatures . ix 0 . crPos
+    p <- w ^? cWorld . lWorld . creatures . ix 0 . crPos . _xy
     return $ setLayer DebugLayer $ foldMap f $ wlsNearPoint p w
   where
     f wl = color violet $ thickLine 3 [a, b]
@@ -384,7 +385,7 @@ drawWlIDs :: World -> Picture
 drawWlIDs w = setLayer FixedCoordLayer $ foldMap f (w ^. cWorld . lWorld . walls)
   where
     f wl
-        | dist (_crPos $ you w) (fst (_wlLine wl)) > 200 = mempty -- this should be improved with a better "on screen test"
+        | dist (you w ^. crPos . _xy) (fst (_wlLine wl)) > 200 = mempty -- this should be improved with a better "on screen test"
         | otherwise =
             uncurryV translate p
                 . scale 0.1 0.1
@@ -414,12 +415,12 @@ drawCrInfo cfig w =
         | _crID cr == 0 = Nothing
         | crOnScreen =
             Just
-                ( _crPos cr
+                ( cr ^. crPos . _xy
                 , catMaybes
                     --        [fmap show $ ap ^? crGoal
                     [ fpreShow "crHP" $ cr ^? crHP . _HP
                     , fpreShow "crStrategy" $ ap ^? apStrategy
-                    , fmap (("crPos....." ++) . shortShow) $ cr ^? crPos
+                    , fmap (("crPos....." ++) . shortShow) $ cr ^? crPos . _xy
                     , fpreShow "cpVigilance" $ cr ^? crPerception . cpVigilance
                     , --        , fmap show $ cr ^? crOldPos
                       fpreShow "crAction" $ ap ^? apAction
@@ -429,7 +430,7 @@ drawCrInfo cfig w =
         | otherwise = Nothing
       where
         ap = _crActionPlan cr
-        crOnScreen = pointIsOnScreen cfig cam $ _crPos cr
+        crOnScreen = pointIsOnScreen cfig cam $ cr ^. crPos . _xy
 
     fpreShow :: (Show a, Functor f) => String -> f a -> f String
     fpreShow str = fmap (((rightPad 7 '.' str ++ "...") ++) . show)
diff --git a/src/Dodge/Default/Creature.hs b/src/Dodge/Default/Creature.hs
index 882d4ae8d..56a9a8558 100644
--- a/src/Dodge/Default/Creature.hs
+++ b/src/Dodge/Default/Creature.hs
@@ -12,9 +12,9 @@ import Geometry.Data
 defaultCreature :: Creature
 defaultCreature =
     Creature
-        { _crPos = V2 0 0
-        , _crOldPos = V2 0 0
-        , _crZ = 0
+        { _crPos = V3 0 0 0
+        , _crOldPos = V3 0 0 0
+--        , _crZ = 0
         , _crZVel = 0
         , _crDir = 0
         , _crMvDir = 0
diff --git a/src/Dodge/Equipment.hs b/src/Dodge/Equipment.hs
index 6f67d02ad..5c5d55d28 100644
--- a/src/Dodge/Equipment.hs
+++ b/src/Dodge/Equipment.hs
@@ -3,6 +3,7 @@ module Dodge.Equipment (
     effectOnEquip,
 ) where
 
+import Linear
 import Control.Lens
 import Data.Maybe
 import Dodge.Creature.HandPos
@@ -60,4 +61,4 @@ setWristShieldPos itm cr w = w & moveWallIDUnsafe i wlline
     --    g
     --        | twists cr = (+.+.+ V3 (-5) 10 0)
     --        | otherwise = id
-    f = (+.+ _crPos cr) . stripZ . rotate3 (_crDir cr) . handtrans
+    f = (+.+ cr ^. crPos . _xy) . stripZ . rotate3 (_crDir cr) . handtrans
diff --git a/src/Dodge/Euse.hs b/src/Dodge/Euse.hs
index c839ca650..a3ce9a297 100644
--- a/src/Dodge/Euse.hs
+++ b/src/Dodge/Euse.hs
@@ -1,6 +1,4 @@
-module Dodge.Euse (
-    equipBackgroundEffect,
-) where
+module Dodge.Euse (equipBackgroundEffect) where
 
 import Dodge.Creature.HandPos
 import Dodge.Creature.Test
@@ -11,14 +9,19 @@ import Dodge.Data.World
 import Dodge.Wall.Move
 import Geometry
 import LensHelp
+import Linear
 
-equipBackgroundEffect :: LocationDT OItem -> Creature -> EquipSite 
-    -> World -> World
+equipBackgroundEffect ::
+    LocationDT OItem ->
+    Creature ->
+    EquipSite ->
+    World ->
+    World
 equipBackgroundEffect loc cr = case eo of
     EQUIP (MAGSHIELD mt) -> const $ useMagShield mt itm cr
     EQUIP WRISTARMOUR -> setWristShieldPos itm cr
     EQUIP HEADLAMP -> const $ createHeadLamp itm cr
-    _ ->  const id
+    _ -> const id
   where
     itm = loc ^. locDT . dtValue . _1
     eo = itm ^. itType
@@ -28,7 +31,7 @@ useMagShield :: MagnetBuBu -> Item -> Creature -> World -> World
 useMagShield mt _ cr w =
     w & cWorld . lWorld . magnets
         .:~ Magnet
-            { _mgPos = _crPos cr
+            { _mgPos = cr ^. crPos . _xy
             , _mgField = mt
             }
 
@@ -43,7 +46,7 @@ setWristShieldPos itm cr x = moveWallIDUnsafe i wlline
     g
         | twists cr = (+.+.+ V3 (-5) 10 0)
         | otherwise = id
-    f = (+.+ _crPos cr) . stripZ . rotate3 (_crDir cr) . handtrans cr
+    f = (+.+ cr ^. crPos . _xy) . stripZ . rotate3 (_crDir cr) . handtrans cr
 
 -- TODO the reflection should be controled by the particle
 --shieldWallDamage :: Damage -> Wall -> Int -> World -> World
@@ -53,10 +56,14 @@ setWristShieldPos itm cr x = moveWallIDUnsafe i wlline
 --    _ -> w
 
 createHeadLamp :: Item -> Creature -> World -> World
-createHeadLamp _ cr w = w &
-    cWorld . lWorld . lights
+createHeadLamp _ cr w =
+    w
+        & cWorld . lWorld . lights
         .:~ LSParam
-            ((_crPos cr `v2z` 0) +.+.+ rotate3 (_crDir cr) 
-    (translateToES cr OnHead (V3 5 0 3)))
+            ( _crPos cr
+                +.+.+ rotate3
+                    (_crDir cr)
+                    (translateToES cr OnHead (V3 5 0 3))
+            )
             200
             0.7
diff --git a/src/Dodge/Gas.hs b/src/Dodge/Gas.hs
index 50129902c..50976b1ae 100644
--- a/src/Dodge/Gas.hs
+++ b/src/Dodge/Gas.hs
@@ -1,5 +1,7 @@
 module Dodge.Gas where
 
+import Linear
+import Control.Lens
 import Dodge.Data.World
 import Dodge.Flame
 import Dodge.WorldEvent
@@ -13,7 +15,7 @@ createGas gc = case gc of
 aGasCloud :: Float -> Point2 -> Float -> Creature -> World -> World
 aGasCloud pressure pos dir cr =
     makeGasCloud pos $
-        (_crPos cr -.- _crOldPos cr) +.+ pressure *.* unitVectorAtAngle dir
+        (cr ^. crPos . _xy -.- cr ^. crOldPos . _xy) +.+ pressure *.* unitVectorAtAngle dir
 
 aFlame :: Float -> Point2 -> Float -> Creature -> World -> World
 aFlame pressure pos dir cr = makeFlame pos vel
@@ -21,4 +23,4 @@ aFlame pressure pos dir cr = makeFlame pos vel
     --w & instantParticles .:~ aFlameParticle t pos vel Nothing -- (Just $ _crID cr)
 
     --    (t,_) = randomR (99,101) (_randGen w)
-    vel = (_crPos cr -.- _crOldPos cr) +.+ pressure *.* unitVectorAtAngle dir
+    vel = (cr ^. crPos . _xy -.- cr ^. crOldPos . _xy) +.+ pressure *.* unitVectorAtAngle dir
diff --git a/src/Dodge/HeldUse.hs b/src/Dodge/HeldUse.hs
index 13f8f6a42..5e2fd49da 100644
--- a/src/Dodge/HeldUse.hs
+++ b/src/Dodge/HeldUse.hs
@@ -8,6 +8,7 @@ module Dodge.HeldUse (
     heldEffectMuzzles,
 ) where
 
+import Linear (_xy)
 import Color
 import Control.Applicative
 import Control.Monad
@@ -72,7 +73,7 @@ hammerCheck f pt loc cr w = case itemTriggerType loc of
             w & setwarming
                 & soundContinue
                     (CrWeaponSound cid 0)
-                    (_crPos cr)
+                    (cr ^. crPos . _xy)
                     (warmupSound $ it ^. itType)
                     (Just 2)
                 & itmset . itParams . wTime +~ 1
@@ -82,7 +83,7 @@ hammerCheck f pt loc cr w = case itemTriggerType loc of
             w & setwarming
                 & soundContinue
                     (CrWeaponSound cid 0)
-                    (_crPos cr)
+                    (cr ^. crPos . _xy)
                     (warmupSound $ it ^. itType)
                     (Just 2)
                 & itmset . itParams . wTime +~ 1
@@ -371,8 +372,8 @@ applyCME loc cr cme
     itm = loc ^. locDT . dtValue . _1
     spush = maybe 0 itemSidePush $ itm ^? itType . ibtHeld
     failsound w = case w ^? input . mouseButtons . ix SDL.ButtonLeft of
-        Just 0 -> soundStart (CrWeaponFailSound (_crID cr)) (_crPos cr) click1S Nothing w
-        _ -> soundContinue (CrWeaponFailSound (_crID cr)) (_crPos cr) click1S Nothing w
+        Just 0 -> soundStart (CrWeaponFailSound (_crID cr)) (cr ^. crPos . _xy) click1S Nothing w
+        _ -> soundContinue (CrWeaponFailSound (_crID cr)) (cr ^. crPos . _xy) click1S Nothing w
 
 itemSidePush :: HeldItemType -> Float
 itemSidePush = \case
@@ -443,14 +444,14 @@ applySoundCME itm cr = fromMaybe id $ do
     (soundid, x) <- bgunSound itm
     return $
         if x > 0
-            then soundContinue (CrWeaponSound cid 0) (_crPos cr) soundid (Just x)
-            else soundMultiFrom [CrWeaponSound cid j | j <- [0 .. 16]] (_crPos cr) soundid Nothing
+            then soundContinue (CrWeaponSound cid 0) (cr ^. crPos . _xy) soundid (Just x)
+            else soundMultiFrom [CrWeaponSound cid j | j <- [0 .. 16]] (cr ^. crPos . _xy) soundid Nothing
   where
     cid = _crID cr
 
 applyRecoil :: LocationDT OItem -> Creature -> World -> World
 applyRecoil loc cr =
-    cWorld . lWorld . creatures . ix (_crID cr) . crPos
+    cWorld . lWorld . creatures . ix (_crID cr) . crPos . _xy
         +~ rotateV (_crDir cr + Q.qToAng q) (V2 ((- recoilAmount itm) / crMass (_crType cr)) 0)
   where
     itm = loc ^. locDT . dtValue . _1
@@ -552,7 +553,7 @@ applySidePush :: Float -> Creature -> World -> World
 applySidePush 0 _ w = w
 applySidePush maxSide cr w =
     w
-        & cWorld . lWorld . creatures . ix cid . crPos +~ push
+        & cWorld . lWorld . creatures . ix cid . crPos . _xy +~ push
         & randGen .~ g
   where
     cid = _crID cr
@@ -664,7 +665,7 @@ makeMuzzleFlare mz loc cr = case mz ^. mzFlareType of
     (V3 x y _, q) =
         locOrient loc cr
             `Q.comp` (_mzPos mz `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
-    pos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    pos = (cr ^. crPos . _xy) + rotateV (_crDir cr) (V2 x y)
     dir = _crDir cr + Q.qToAng q
     oddcheck f w
         | odd (w ^. cWorld . lWorld . lClock) = f w
@@ -796,7 +797,7 @@ shootTractorBeam cr w =
     w & cWorld . lWorld . tractorBeams .:~ tractorBeamAt spos outpos dir power
         & soundContinue (CrWeaponSound (_crID cr) 0) cpos tone440sawtoothquietS (Just 2)
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     spos = cpos +.+ (crRad (cr ^. crType) + 10) *.* unitVectorAtAngle dir
     xpos = cpos +.+ 400 *.* unitVectorAtAngle dir
     dir = _crDir cr
@@ -827,7 +828,7 @@ creatureShootLaser loc cr mz w =
     (V3 x y _, q) =
         locOrient loc cr
             `Q.comp` ((_mzPos mz + V2 0 offset) `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
-    pos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    pos = cr ^. crPos . _xy + rotateV (_crDir cr) (V2 x y)
     dir = _crDir cr + Q.qToAng q + a
     (a, g) = randomR (- inacc, inacc) $ _randGen w
     inacc = _mzInaccuracy mz
@@ -868,7 +869,7 @@ creatureShootPulseLaser loc cr mz w =
     (V3 x y _, q) =
         locOrient loc cr
             `Q.comp` ((_mzPos mz + V2 0 offset) `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
-    pos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    pos = cr ^. crPos . _xy + rotateV (_crDir cr) (V2 x y)
     dir = _crDir cr + Q.qToAng q + a
     (a, g) = randomR (- inacc, inacc) $ _randGen w
     inacc = _mzInaccuracy mz
@@ -895,7 +896,7 @@ creatureShootPulseBall loc cr mz w = w & randGen .~ g & shootPulseBall pos dir
     (V3 x y _, q) =
         locOrient loc cr
             `Q.comp` ((_mzPos mz + V2 0 offset) `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
-    pos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    pos = cr ^. crPos . _xy + rotateV (_crDir cr) (V2 x y)
     dir = _crDir cr + Q.qToAng q + a
     (a, g) = randomR (- inacc, inacc) $ _randGen w
     inacc = _mzInaccuracy mz
@@ -991,7 +992,7 @@ shootBullet bu loc cr mz w = makeBullet bu itm bulpos dir . (randGen .~ g) $ w
         locOrient loc cr
             `Q.comp` ((_mzPos mz + V2 0 offset) `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
     itm = loc ^. locDT . dtValue . _1
-    bulpos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    bulpos = cr ^. crPos . _xy + rotateV (_crDir cr) (V2 x y)
     (a, g) = randomR (- inacc, inacc) $ _randGen w
     dir = _crDir cr + Q.qToAng q + a
     inacc = _mzInaccuracy mz
@@ -1130,7 +1131,7 @@ useGasParams (NInt magitid) mz loc cr w =
     (V3 x y _, q) =
         locOrient loc cr
             `Q.comp` ((_mzPos mz + V2 0 offset) `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
-    pos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    pos = cr ^. crPos . _xy + rotateV (_crDir cr) (V2 x y)
     (a, g') = randomR (- inacc, inacc) g
     inacc = _mzInaccuracy mz
     offset = case mz ^. mzRandomOffset of
@@ -1219,7 +1220,7 @@ shootTeslaArc loc cr mz w =
     (V3 x y _, q) =
         locOrient loc cr
             `Q.comp` ((_mzPos mz + V2 0 offset) `v2z` 0, Q.axisAngle (V3 0 0 1) (_mzRot mz))
-    pos = _crPos cr + rotateV (_crDir cr) (V2 x y)
+    pos = cr ^. crPos . _xy + rotateV (_crDir cr) (V2 x y)
     dir = _crDir cr + Q.qToAng q
     offset = case mz ^. mzRandomOffset of
         0 -> 0
@@ -1343,12 +1344,12 @@ createProjectile x pjtype mtree stab muz cr w = fromMaybe (failsound w) $ do
     makesound =
         soundMultiFrom
             [CrWeaponSound (_crID cr) j | j <- [0 .. 3]]
-            (_crPos cr)
+            (cr ^. crPos . _xy)
             tap4S
             Nothing
     failsound w' = case w' ^? input . mouseButtons . ix SDL.ButtonLeft of
-        Just 0 -> soundStart (CrWeaponSound (_crID cr) 0) (_crPos cr) click1S Nothing w'
-        _ -> soundContinue (CrWeaponSound (_crID cr) 0) (_crPos cr) click1S Nothing w'
+        Just 0 -> soundStart (CrWeaponSound (_crID cr) 0) (cr ^. crPos . _xy) click1S Nothing w'
+        _ -> soundContinue (CrWeaponSound (_crID cr) 0) (cr ^. crPos . _xy) click1S Nothing w'
 
 ---- need to add these to muzzle flare?
 --makeMuzzleSmoke :: Muzzle -> Item -> Creature -> World -> World
diff --git a/src/Dodge/Humanoid.hs b/src/Dodge/Humanoid.hs
index 5f27b9ce1..9f6ce53c4 100644
--- a/src/Dodge/Humanoid.hs
+++ b/src/Dodge/Humanoid.hs
@@ -1,5 +1,6 @@
 module Dodge.Humanoid where
 
+import Linear
 import Data.Maybe
 import Dodge.Creature.Action
 import Dodge.Creature
@@ -218,9 +219,9 @@ chooseMovementPistol' cr w =
         $ g
   where
     g = _randGen w
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     ycr = w ^?! cWorld . lWorld . creatures . ix 0
-    ypos = _crPos ycr
+    ypos = ycr ^. crPos . _xy
     chargeProb
         | dist cpos ypos > 300 = 5
         | dist cpos ypos > 150 = 1
@@ -252,8 +253,8 @@ retreatActionsPistol tcr cr =
         `DoImpulsesAlongside` 3
         `DoReplicate` ImpulsesList (replicate 9 [Move (V2 (-3) 0)] ++ [[UseItem]])
   where
-    cpos = _crPos cr
-    tpos = _crPos tcr
+    cpos = cr  ^. crPos . _xy
+    tpos = tcr ^. crPos . _xy
     retreatOffset =
         let a
                 | dist cpos tpos < 50 = 0
diff --git a/src/Dodge/Inventory.hs b/src/Dodge/Inventory.hs
index 7d496c742..a759f485e 100644
--- a/src/Dodge/Inventory.hs
+++ b/src/Dodge/Inventory.hs
@@ -16,6 +16,7 @@ module Dodge.Inventory (
     destroyAllInvItems,
 ) where
 
+import Linear
 import Data.Function
 import Data.Maybe
 import Dodge.Base
@@ -128,7 +129,7 @@ updateCloseObjects w =
             return (x /= TerminalDeactivated)
         _ -> True
     isclose x = dist y x < 40 && hasButtonLOS y x w
-    y = _crPos $ you w
+    y = you w ^. crPos . _xy
 
 changeSwapSel :: Int -> World -> World
 changeSwapSel yi w
diff --git a/src/Dodge/Inventory/Add.hs b/src/Dodge/Inventory/Add.hs
index 65fe4ad6d..9ab43abbf 100644
--- a/src/Dodge/Inventory/Add.hs
+++ b/src/Dodge/Inventory/Add.hs
@@ -6,6 +6,7 @@ module Dodge.Inventory.Add (
     pickUpItemAt,
 ) where
 
+import Linear
 import qualified Data.IntSet as IS
 import Control.Lens
 import Control.Monad
@@ -61,7 +62,7 @@ createItemYou :: Item -> World -> World
 createItemYou itm w = maybe w' snd $ tryPutItemInInv 0 itid w'
   where
     itid = IM.newKey $ w ^. cWorld . lWorld . items
-    pos = w ^?! cWorld . lWorld . creatures . ix 0 . crPos
+    pos = w ^?! cWorld . lWorld . creatures . ix 0 . crPos . _xy
     w' = copyItemToFloor pos (itm & itID .~ NInt itid) w
 
 -- the duplication is annoying...
diff --git a/src/Dodge/Inventory/Swap.hs b/src/Dodge/Inventory/Swap.hs
index 23c9b040c..e8eb4a3c4 100644
--- a/src/Dodge/Inventory/Swap.hs
+++ b/src/Dodge/Inventory/Swap.hs
@@ -3,6 +3,7 @@ module Dodge.Inventory.Swap (
     swapAnyExtraSelection
 ) where
 
+import Linear
 import NewInt
 import Dodge.SoundLogic
 import Dodge.Item.Grammar
@@ -71,7 +72,7 @@ checkConnection so s i j w = fromMaybe w $ do
     iit <- locs ^? ix i . _2
     jit <- locs ^? ix j . _2
     guard $ isConnected iit || isConnected jit
-    return $ soundStart so cpos s Nothing w
+    return $ soundStart so (cpos ^. _xy) s Nothing w
 
 isConnected :: LocationDT a -> Bool
 isConnected x = case x ^. locDtContext of
diff --git a/src/Dodge/Item/BackgroundEffect.hs b/src/Dodge/Item/BackgroundEffect.hs
index 2fcc46e6c..9e5bfd1a7 100644
--- a/src/Dodge/Item/BackgroundEffect.hs
+++ b/src/Dodge/Item/BackgroundEffect.hs
@@ -6,6 +6,7 @@ module Dodge.Item.BackgroundEffect (
     removeShieldWall,
 ) where
 
+import Linear
 import Color
 import Control.Lens
 import Dodge.Creature.Radius
@@ -46,7 +47,7 @@ createShieldWall it cr w = case it ^? itParams . flatShieldWlMIX . _Just of
     crid = _crID cr
     wlline = (a, b)
     crdirv = unitVectorAtAngle $ _crDir cr
-    crpos = _crPos cr
+    crpos =cr ^. crPos . _xy
     rad = crRad (cr ^. crType) + 2
     a = crpos +.+ rad *.* crdirv -.- 10 *.* therot crdirv
     b = crpos +.+ rad *.* crdirv +.+ 10 *.* therot crdirv
diff --git a/src/Dodge/Item/Weapon/Shatter.hs b/src/Dodge/Item/Weapon/Shatter.hs
index 71f298905..352ec08a4 100644
--- a/src/Dodge/Item/Weapon/Shatter.hs
+++ b/src/Dodge/Item/Weapon/Shatter.hs
@@ -1,5 +1,6 @@
 module Dodge.Item.Weapon.Shatter (shootShatter) where
 
+import Linear
 import Dodge.Base.Collide
 import Dodge.Block.Debris
 import Dodge.Data.World
@@ -18,7 +19,7 @@ shootShatter _ cr w =
         Opaque {} -> True
         SeeThrough -> True
         _ -> False
-    sp = _crPos cr +.+ 10 *.* unitVectorAtAngle dir
+    sp = cr ^. crPos ._xy +.+ 10 *.* unitVectorAtAngle dir
     -- the 10 is arbtrary and should be changed to a muzzle position
     dir = _crDir cr
     ep = sp +.+ 200 *.* unitVectorAtAngle dir
diff --git a/src/Dodge/Lampoid.hs b/src/Dodge/Lampoid.hs
index e12344ffc..332f3453c 100644
--- a/src/Dodge/Lampoid.hs
+++ b/src/Dodge/Lampoid.hs
@@ -1,5 +1,6 @@
 module Dodge.Lampoid (updateLampoid) where
 
+import Linear
 import Dodge.Creature.State
 import Dodge.Data.World
 import Dodge.LightSource
@@ -31,7 +32,7 @@ updateLampoid cr w = case cr ^?! crType . lampLSID of
                 & cWorld . lWorld . lightSources . ix i . lsParam . lsPos .~ addZ h cpos
                 & doDamage (cr ^. crID)
   where
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
     cid = _crID cr
     crtype = _crType cr
     h = _lampHeight crtype
diff --git a/src/Dodge/Machine.hs b/src/Dodge/Machine.hs
index c7f2ab18e..d729542b7 100644
--- a/src/Dodge/Machine.hs
+++ b/src/Dodge/Machine.hs
@@ -1,5 +1,6 @@
 module Dodge.Machine where
 
+import Linear
 import Dodge.Base
 import Dodge.Data.World
 import Dodge.Machine.Damage
@@ -51,5 +52,5 @@ machineAddSound sid f mc w
     | d < 200 = soundContinueVol (1 -0.005 * d) (MachineSound mid) (_mcPos mc) sid (Just 2) $ f mc w
     | otherwise = f mc w
   where
-    d = dist (_crPos $ you w) (_mcPos mc)
+    d = dist (you w ^. crPos . _xy) (_mcPos mc)
     mid = _mcID mc
diff --git a/src/Dodge/Machine/Update.hs b/src/Dodge/Machine/Update.hs
index a30848365..ce8466535 100644
--- a/src/Dodge/Machine/Update.hs
+++ b/src/Dodge/Machine/Update.hs
@@ -2,6 +2,7 @@
 
 module Dodge.Machine.Update (updateMachine) where
 
+import Linear
 import Control.Monad
 import Data.List (partition)
 import Data.Maybe
@@ -61,7 +62,7 @@ updateTurret rotSpeed mc w =
         | elecDam < 10 = updateFiringStatus . doTurn
         | otherwise = id
     mcid = _mcID mc
-    ypos = _crPos $ you w
+    ypos =  you w ^. crPos . _xy
     mcpos = _mcPos mc
     seesYou = hasLOSIndirect mcpos ypos w
     (elecDams, dams) = partition isElectrical $ _mcDamage mc
@@ -122,7 +123,7 @@ mcPlaySound mc w = case _mcType mc of
                 w
     _ -> w
   where
-    d = max 0 (dist (_crPos $ you w) (_mcPos mc) - 100)
+    d = max 0 (dist ( you w ^. crPos . _xy) (_mcPos mc) - 100)
     mid = _mcID mc
 
 mcApplyDamage :: [Damage] -> Machine -> World -> World
@@ -156,9 +157,9 @@ mcNoItemsTest mc ps w
     falsetog = mc ^? mcType . _McProxSensor . proxToggle . _Just == Just False
     notog =
         null (mc ^? mcType . _McProxSensor . proxToggle . _Just)
-            && pointInPoly (cr ^. crPos) qs
+            && pointInPoly (cr ^. crPos . _xy) qs
     t =
-        ((cr ^. crInv == mempty) || not (pointInPoly (cr ^. crPos) qs))
+        ((cr ^. crInv == mempty) || not (pointInPoly (cr ^. crPos . _xy) qs))
             && not (any ((`pointInPoly` qs) . _flItPos) (w ^. cWorld . lWorld . floorItems))
     cr = w ^?! cWorld . lWorld . creatures . ix 0
     mcsenslens = cWorld . lWorld . machines . ix (_mcID mc) . mcType . _McProxSensor
@@ -170,7 +171,7 @@ mcNoItemsTest mc ps w
 mcProximitySensorUpdate ::
     Machine -> ProximitySensor -> ProximityRequirement -> World -> World
 mcProximitySensorUpdate mc sens pr w
-    | truetog || dist (_crPos ycr) (_mcPos mc) > 40 = w
+    | truetog || dist (ycr ^. crPos . _xy) (_mcPos mc) > 40 = w
     | mcProxTest w pr =
         w
             & mcsenslens . proxToggle ?~ True
diff --git a/src/Dodge/Material/Damage.hs b/src/Dodge/Material/Damage.hs
index d21f10e55..a4577dad2 100644
--- a/src/Dodge/Material/Damage.hs
+++ b/src/Dodge/Material/Damage.hs
@@ -1,5 +1,6 @@
 module Dodge.Material.Damage (damMatSideEffect) where
 
+import Linear
 import Control.Lens
 import Dodge.Data.World
 import Dodge.SoundLogic
@@ -45,7 +46,7 @@ damageStone dm ecw w =
       where
         v = case ecw of
             Right wl -> uncurry (-) $ _wlLine wl
-            Left cr -> vNormal (p - _crPos cr)
+            Left cr -> vNormal (p - cr ^. crPos . _xy)
     randsound p xs =
         let (x, g) = runState (takeOne xs) $ _randGen w
          in soundStart so p x Nothing . set randGen g
@@ -76,7 +77,7 @@ damageMetal dm ecw w =
       where
         v = case ecw of
             Right wl -> uncurry (-) $ _wlLine wl
-            Left cr -> vNormal (p - _crPos cr)
+            Left cr -> vNormal (p - cr ^. crPos . _xy)
     outTo x t = x -.- squashNormalizeV t
     randsound p xs =
         let (x, g) = runState (takeOne xs) $ _randGen w
diff --git a/src/Dodge/Placement/PlaceSpot.hs b/src/Dodge/Placement/PlaceSpot.hs
index 8e9f7a645..796ae1c76 100644
--- a/src/Dodge/Placement/PlaceSpot.hs
+++ b/src/Dodge/Placement/PlaceSpot.hs
@@ -6,6 +6,7 @@
 -}
 module Dodge.Placement.PlaceSpot (placeSpot) where
 
+import Linear
 import Color
 import Control.Monad.State
 import Data.Bifunctor
@@ -184,7 +185,10 @@ mvPP :: Point2 -> Float -> PressPlate -> PressPlate
 mvPP p rot pp = pp{_ppPos = p, _ppRot = rot}
 
 mvCr :: Point2 -> Float -> Creature -> Creature
-mvCr p rot cr = cr{_crPos = p, _crOldPos = p, _crDir = rot}
+mvCr p rot cr = cr
+    & crPos . _xy .~ p
+    & crOldPos . _xy .~ p
+    & crDir .~ rot
 
 mvFS :: Point2 -> Float -> ForegroundShape -> ForegroundShape
 mvFS p a = (fsDir +~ a) . (fsPos %~ ((p +.+) . rotateV a))
diff --git a/src/Dodge/PressPlate.hs b/src/Dodge/PressPlate.hs
index 6848a38ed..822bd7973 100644
--- a/src/Dodge/PressPlate.hs
+++ b/src/Dodge/PressPlate.hs
@@ -1,5 +1,7 @@
 module Dodge.PressPlate where
 
+import Control.Lens
+import Linear
 import Dodge.Base.You
 import Dodge.Data.World
 import Dodge.WorldEvent.Explosion
@@ -12,5 +14,6 @@ doPressPlateEvent ppe = case ppe of
 
 ppLevelReset :: PressPlate -> World -> World
 ppLevelReset pp w
-    | dist (_crPos $ you w) (_ppPos pp) < 20 = makeExplosionAt (_ppPos pp `v2z` 20) 0 w
+    | dist (you w ^. crPos . _xy) (_ppPos pp) < 20 
+        = makeExplosionAt (_ppPos pp `v2z` 20) 0 w
     | otherwise = w
diff --git a/src/Dodge/Projectile/Create.hs b/src/Dodge/Projectile/Create.hs
index f8ae1f4d7..a2031ecc7 100644
--- a/src/Dodge/Projectile/Create.hs
+++ b/src/Dodge/Projectile/Create.hs
@@ -12,6 +12,7 @@ import Geometry
 import qualified IntMapHelp as IM
 import LensHelp
 import NewInt
+import Linear
 
 data PJStabiliser
     = StabOrthReduce
@@ -35,7 +36,7 @@ createShell (p,q) mdetonator mscreen stab pjtype payload muz cr w =
         & updatedetonator
         & cWorld . lWorld . projectiles . at i
             ?~ Shell
-                { _pjPos = pos `v2z` 20
+                { _pjPos = pos
                 , _pjVel = (rotateV dir' (V2 speed 0) + crvelcomponent) `v2z` 0
                 , _pjID = i
                 , _pjDir = dir'
@@ -49,8 +50,8 @@ createShell (p,q) mdetonator mscreen stab pjtype payload muz cr w =
                 }
   where
     crvelcomponent = case stab of
-        Just StabOrthReduce -> projV (cr ^. crPos - cr ^. crOldPos) (unitVectorAtAngle dir)
-        _ -> cr ^. crPos - cr ^. crOldPos
+        Just StabOrthReduce -> projV (cr ^. crPos . _xy - cr ^. crOldPos . _xy) (unitVectorAtAngle dir)
+        _ -> (cr ^. crPos - cr ^. crOldPos) ^. _xy
     bs = case stab of
         Just StabOrthReduce -> Nothing
         Just StabSpinIncrease -> Just (_crID cr, 5)
@@ -74,5 +75,6 @@ createShell (p,q) mdetonator mscreen stab pjtype payload muz cr w =
                 .:~ i
     i = IM.newKey $ w ^. cWorld . lWorld . projectiles
     dir = _crDir cr + _mzRot muz
-    pos = _crPos cr + rotateV dir (xyV3 p + rotateV (argV (Q.qToV2 q)) (_mzPos muz))
+    --pos = _crPos cr + rotateV dir (xyV3 p + rotateV (argV (Q.qToV2 q)) (_mzPos muz))
+    pos = _crPos cr + over _xy (rotateV dir) (p + addZ 0 (rotateV (argV (Q.qToV2 q)) (_mzPos muz)))
     dir' = dir  + argV (Q.qToV2 q)
diff --git a/src/Dodge/Projectile/Update.hs b/src/Dodge/Projectile/Update.hs
index 0e6d3ab10..7c8f5e13a 100644
--- a/src/Dodge/Projectile/Update.hs
+++ b/src/Dodge/Projectile/Update.hs
@@ -88,7 +88,7 @@ shellHitCreature p cr pj w
                 .~ Grenade
                     ( GStuckCreature
                         (cr ^. crID)
-                        (rotate3z (- cr ^. crDir) (p - ((cr ^. crPos) `v2z` 0)))
+                        (rotate3z (- cr ^. crDir) (p - ((cr ^. crPos . _xy) `v2z` 0)))
                         (pj ^. pjDir - cr ^. crDir)
                     )
             & soundOriginIDsAt (ShellSound (pj ^. pjID)) [slapS, slap1S] (pj ^. pjPos . _xy)
@@ -250,9 +250,9 @@ moveStuckGrenade cid poff d pj w
             vel = cpos - cr ^. crOldPos
          in w
                 & cWorld . lWorld . projectiles . ix (pj ^. pjID) . pjPos . _xy
-                    .~ xyV3 ((cpos `v2z` 0) + rotate3z cdir poff)
+                    .~ xyV3 (cpos + rotate3z cdir poff)
                 & cWorld . lWorld . projectiles . ix (pj ^. pjID) . pjDir .~ d + cdir
-                & cWorld . lWorld . projectiles . ix (pj ^. pjID) . pjVel . _xy .~ vel
+                & cWorld . lWorld . projectiles . ix (pj ^. pjID) . pjVel .~ vel
     | otherwise =
         w & cWorld . lWorld . projectiles . ix (pj ^. pjID) . pjType .~ Grenade GStick
 
diff --git a/src/Dodge/Prop/Gib.hs b/src/Dodge/Prop/Gib.hs
index 98d878484..7d8efe8c3 100644
--- a/src/Dodge/Prop/Gib.hs
+++ b/src/Dodge/Prop/Gib.hs
@@ -1,5 +1,6 @@
 module Dodge.Prop.Gib (addCrGibs) where
 
+import Linear
 import Color
 import Control.Monad
 import Data.Foldable
@@ -16,27 +17,27 @@ import RandomHelp
 addCrGibs :: Creature -> World -> World
 addCrGibs cr = case damageDirection $ _crDamage cr of
     Nothing ->
-        addGibAt 25 (_skinHead skin) cpos
+        addGibAt (_skinHead skin) (cpos & _z +~ 25)
             . addGibsAtDir pi 0 3 7 (_skinLower skin) cpos
             . addGibsAtDir pi 0 13 20 (_skinUpper skin) cpos
-            . makeDustAt Flesh 50 (addZ 20 cpos)
-            . makeDustAt Flesh 50 (addZ 20 cpos)
-            . makeDustAt Flesh 50 (addZ 20 cpos)
-            . makeDustAt Flesh 50 (addZ 20 cpos)
+            . makeDustAt Flesh 50 (cpos)
+            . makeDustAt Flesh 50 (cpos)
+            . makeDustAt Flesh 50 (cpos)
+            . makeDustAt Flesh 50 (cpos)
     Just d ->
         addGibsAtDir (pi / 4) d 3 7 (_skinLower skin) cpos
             . addGibsAtDir (pi / 4) d 13 20 (_skinUpper skin) cpos
-            . addGibAtDir d 25 (_skinHead skin) cpos
-            . makeDustAt Flesh 50 (addZ 20 cpos)
-            . makeDustAt Flesh 50 (addZ 20 cpos)
-            . makeDustAt Flesh 50 (addZ 20 cpos)
-            . makeDustAt Flesh 50 (addZ 20 cpos)
+            . addGibAtDir d (_skinHead skin) (cpos & _z +~ 25)
+            . makeDustAt Flesh 50 cpos
+            . makeDustAt Flesh 50 cpos
+            . makeDustAt Flesh 50 cpos
+            . makeDustAt Flesh 50 cpos
   where
     skin = crShape $ _crType cr -- this should be cleaned up
     cpos = _crPos cr
 
 -- this is ugly because it is mostly copy-paste from addGibsAt
-addGibsAtDir :: Float -> Float -> Float -> Float -> Color -> Point2 -> World -> World
+addGibsAtDir :: Float -> Float -> Float -> Float -> Color -> Point3 -> World -> World
 addGibsAtDir spread dir minh maxh col p w =
     foldl' (flip $ addGib4 p col) w (zip4 vels zspeeds quats hs)
         & randGen .~ newg
@@ -48,24 +49,26 @@ addGibsAtDir spread dir minh maxh col p w =
     zspeeds = replicateM 4 (state (randomR (-8, 8))) & evalState $ _randGen w
     quats = replicateM 4 (Q.vToQuat (V3 0 0 1) <$> randOnUnitSphere) & evalState $ _randGen w
 
-addGib4 :: Point2 -> Color -> (Point2, Float, QFloat, Float) -> World -> World
+addGib4 :: Point3 -> Color -> (Point2, Float, QFloat, Float) -> World -> World
 addGib4 p col (v, zs, q, h) =
     cWorld . lWorld . debris
         .:~ DebrisChunk
-            { _dbPos = p `v2z` h
+            { _dbPos = p & _z +~ h
             , _dbType = Gib 3 col
             , _dbVel = v `v2z` zs
             , _dbRot = q
             , _dbSpin = Q.axisAngle (vNormal v `v2z` 0) (-0.1)
             }
 
-addGibAt :: Float -> Color -> Point2 -> World -> World
-addGibAt h col p w = addGibAtDir d h col p (w & randGen .~ newg)
+addGibAt :: Color -> Point3 -> World -> World
+--addGibAt h col p w = addGibAtDir d h col p (w & randGen .~ newg)
+addGibAt col p w = addGibAtDir d col p (w & randGen .~ newg)
   where
     (d, newg) = randomR (0, 2 * pi) $ _randGen w
 
-addGibAtDir :: Float -> Float -> Color -> Point2 -> World -> World
-addGibAtDir dir h col p w =
+addGibAtDir :: Float -> Color -> Point3 -> World -> World
+--addGibAtDir dir h col p w =
+addGibAtDir dir col p w =
     w
         & cWorld . lWorld . debris .:~ gib
         & randGen .~ newg
@@ -78,7 +81,7 @@ addGibAtDir dir h col p w =
         let v = s *.* unitVectorAtAngle dir
         return $
             DebrisChunk
-                { _dbPos = p `v2z` h
+                { _dbPos = p
                 , _dbType = Gib 3 col
                 , _dbVel = v `v2z` zs
                 , _dbRot = q
diff --git a/src/Dodge/RadarSweep.hs b/src/Dodge/RadarSweep.hs
index 0d5a77ec1..51dd0f8cf 100644
--- a/src/Dodge/RadarSweep.hs
+++ b/src/Dodge/RadarSweep.hs
@@ -5,6 +5,7 @@ module Dodge.RadarSweep (
     updateRadarSweep,
 ) where
 
+import Linear
 import Color
 import Data.Maybe
 import qualified Data.Set as S
@@ -29,7 +30,7 @@ aRadarPulse itid mitid armitid ob cr =
         .:~ RadarSweep
             { _rsTimer = 50
             , _rsRad = 0
-            , _rsPos = _crPos cr
+            , _rsPos = cr ^. crPos . _xy
             , _rsObject = ob
             , _rsMapper = mitid
             , _rsAR = armitid
@@ -85,7 +86,7 @@ blipAt r col i p =
         }
 
 crBlips :: Point2 -> Float -> World -> ([Point2], S.Set (Point2, Point2))
-crBlips p r = (,mempty) . IM.elems . IM.filter f . fmap _crPos . IM.filter g . _creatures . _lWorld . _cWorld
+crBlips p r = (,mempty) . IM.elems . IM.filter f . fmap (^. crPos . _xy) . IM.filter g . _creatures . _lWorld . _cWorld
   where
     f q = dist p q <= r && dist p q > r - 100
     g cr = _crID cr /= 0
diff --git a/src/Dodge/Render/Picture.hs b/src/Dodge/Render/Picture.hs
index dd96185e5..60726bd90 100644
--- a/src/Dodge/Render/Picture.hs
+++ b/src/Dodge/Render/Picture.hs
@@ -2,6 +2,7 @@
 
 module Dodge.Render.Picture (fixedCoordPictures) where
 
+import Linear (_xy)
 import Control.Lens
 import Data.Maybe
 import Dodge.Base.Coordinate
@@ -116,7 +117,7 @@ mouseCursorType u = case u ^. uvWorld . input . mouseContext of
     w = u ^. uvWorld
     selsec = u ^? uvWorld . hud . diSelection . _Just . slSec
     a = fromMaybe 0 $ do
-        cpos <- w ^? cWorld . lWorld . creatures . ix 0 . crPos
+        cpos <- w ^? cWorld . lWorld . creatures . ix 0 . crPos . _xy
         return . toClosestMultiple (pi / 32) $
             argV (w ^. cWorld . lWorld . lAimPos -.- cpos)
                 - w ^. wCam . camRot
@@ -293,6 +294,6 @@ drawAimSweep cr w = fold $ do
   where
     cdir = _crDir cr
     rot = campos ^. camRot
-    p = _crPos cr
+    p = cr ^. crPos . _xy
     campos = w ^. wCam
     mwp = w ^. cWorld . lWorld . lAimPos
diff --git a/src/Dodge/Render/ShapePicture.hs b/src/Dodge/Render/ShapePicture.hs
index dfc730d31..ec25b5554 100644
--- a/src/Dodge/Render/ShapePicture.hs
+++ b/src/Dodge/Render/ShapePicture.hs
@@ -26,7 +26,7 @@ worldSPic cfig u =
         <> foldup drawPulseBall (filtOn _pbPos _pulseBalls)
         <> foldup (shiftDraw _blPos _blDir (drawBlock . _blDraw)) (filtOn _blPos _blocks)
         <> foldup (shiftDraw _fsPos _fsDir (const _fsSPic)) (filtOn _fsPos _foreShapes)
-        <> foldup (drawCreature (lw ^. items)) (filtOn _crPos _creatures)
+        <> foldup (drawCreature (lw ^. items)) (filtOn (^. crPos . _xy) _creatures)
         <> foldup
             (Prelude.uncurry floorItemSPic)
             ( IM.intersectionWith
@@ -65,7 +65,7 @@ drawPulseBall pb =
         $ circleSolidCol green white 10
 
 drawCreature :: IM.IntMap Item -> Creature -> SPic
-drawCreature m cr = translateSPz (_crZ cr) . uncurryV translateSPxy (_crPos cr) . rotateSP (_crDir cr) $
+drawCreature m cr = translateSP (_crPos cr) . rotateSP (_crDir cr) $
     case cr ^. crType of
         _ | CrIsCorpse sp <- cr ^. crHP -> sp
         _ | null (cr ^? crHP . _HP) -> mempty
diff --git a/src/Dodge/SpawnAt.hs b/src/Dodge/SpawnAt.hs
index 35923401d..361daba21 100644
--- a/src/Dodge/SpawnAt.hs
+++ b/src/Dodge/SpawnAt.hs
@@ -1,5 +1,6 @@
 module Dodge.SpawnAt (respawn) where
 
+import Linear
 --import Dodge.SoundLogic.ExternallyGeneratedSounds
 import Dodge.Creature
 import Geometry.Data
@@ -20,4 +21,4 @@ spawnAt p d w = w
 ----        SoundStart BackgroundSound p foamSprayFadeOutS Nothing :
 --        [MakeStartCloudAt (V3 x y 20 & _xy +~ p) | x <- [-5, -4 .. 5], y <- [-5, -4 .. 5]]
   where
-    f = set crPos p . set crDir d . set crMvDir d . set crMvAim d . set crZ 0 . set crZVel 0
+    f = set (crPos . _xy) p . set crDir d . set crMvDir d . set crMvAim d . set (crPos . _z) 0 . set crZVel 0
diff --git a/src/Dodge/TractorBeam/Update.hs b/src/Dodge/TractorBeam/Update.hs
index 5e718e6b4..87a1a9474 100644
--- a/src/Dodge/TractorBeam/Update.hs
+++ b/src/Dodge/TractorBeam/Update.hs
@@ -4,6 +4,7 @@ import Control.Lens
 import Dodge.Data.World
 import Geometry
 import qualified IntMapHelp as IM
+import Linear
 
 updateTractorBeam :: World -> TractorBeam -> (World, Maybe TractorBeam)
 updateTractorBeam w pj
@@ -26,7 +27,7 @@ tractFlIt q p1 outpos it
 
 tractCr :: Point2 -> Point2 -> Point2 -> Creature -> Creature
 tractCr q p1 outpos cr
-    | segOnCirc p1 outpos (_crPos cr) 10 = cr & crPos %~ tractorPullPos q p1
+    | segOnCirc p1 outpos (cr ^. crPos . _xy) 10 = cr & crPos . _xy %~ tractorPullPos q p1
     | otherwise = cr
 
 tractorPullPos :: Point2 -> Point2 -> Point2 -> Point2
diff --git a/src/Dodge/Update.hs b/src/Dodge/Update.hs
index 5927241d0..8372b5bf2 100644
--- a/src/Dodge/Update.hs
+++ b/src/Dodge/Update.hs
@@ -317,7 +317,7 @@ checkTermDist w = fromMaybe w $ do
     tmid <- w ^? hud . subInventory . termID
     btid <- w ^? cWorld . lWorld . terminals . ix tmid . tmButtonID
     btpos <- w ^? cWorld . lWorld . buttons . ix btid . btPos
-    guard $ dist btpos (_crPos $ you w) > 40
+    guard $ dist btpos ( you w ^. crPos . _xy) > 40
     return $ w & hud . subInventory .~ NoSubInventory
 
 updateMouseContext :: Config -> Universe -> Universe
@@ -505,7 +505,7 @@ updateCreatureSoundPositions w =
         $ _playingSounds w
   where
     insertSound w' k s = w' & toPlaySounds %~ M.insertWith (const id) k s
-    updateSound (CrMouth cid) s = case w ^? cWorld . lWorld . creatures . ix cid . crPos of
+    updateSound (CrMouth cid) s = case w ^? cWorld . lWorld . creatures . ix cid . crPos . _xy of
         Just p -> Just s{_soundPos = p, _soundAngDist = Just (soundAngle p w, 0)}
         Nothing -> Just s{_soundTime = Just 0}
     updateSound _ _ = Nothing
@@ -846,11 +846,11 @@ dustSpringVel a v b
 
 simpleCrSprings :: World -> World
 simpleCrSprings w = IM.foldl' (flip crSpring) w 
-    $ IM.filter (\cr -> _crZ cr >= 0) $ w ^. cWorld . lWorld . creatures
+    $ IM.filter (\cr -> cr ^. crPos . _z >= 0) $ w ^. cWorld . lWorld . creatures
 
 -- note that this may in rare cases not push creatures away from each other
 crSpring :: Creature -> World -> World
-crSpring c w = foldl' (flip $ crCrSpring c) w $ crsNearPoint (_crPos c) w
+crSpring c w = foldl' (flip $ crCrSpring c) w $ crsNearPoint (c ^. crPos . _xy) w
 
 crCrSpring :: Creature -> Creature -> World -> World
 crCrSpring c1 c2
@@ -859,13 +859,13 @@ crCrSpring c1 c2
     | diff >= comRad = id
     | otherwise =
         cWorld . lWorld . creatures
-            %~ ( over (ix id1 . crPos) (+.+ overlap1)
-                    . over (ix id2 . crPos) (-.- overlap2)
+            %~ ( over (ix id1 . crPos . _xy) (+.+ overlap1)
+                    . over (ix id2 . crPos . _xy) (-.- overlap2)
                )
   where
     id1 = _crID c1
     id2 = _crID c2
-    vec = _crPos c1 -.- _crPos c2
+    vec = c1 ^. crPos . _xy -.- c2 ^. crPos . _xy
     diff = magV vec
     comRad = crRad (c1 ^. crType) + crRad (c2 ^. crType)
     overlap1 = ((comRad - diff) * crMass (_crType c2) * 0.5 / massT) *.* errorNormalizeV 55 vec
diff --git a/src/Dodge/Update/Camera.hs b/src/Dodge/Update/Camera.hs
index 348d6e2bd..62ba962ba 100644
--- a/src/Dodge/Update/Camera.hs
+++ b/src/Dodge/Update/Camera.hs
@@ -87,8 +87,8 @@ updateInGameCamera cfig w =
 moveZoomCamera :: Config -> Input -> Creature -> World -> Camera -> Camera
 moveZoomCamera cfig theinput cr w campos =
     campos
-        & camCenter .~ fromMaybe (_crPos cr +.+ offset) mremotepos
-        & camViewFrom .~ fromMaybe (_crPos cr) mremotepos
+        & camCenter .~ fromMaybe (cr ^. crPos . _xy +.+ offset) mremotepos
+        & camViewFrom .~ fromMaybe (cr ^. crPos . _xy) mremotepos
         & camZoom .~ newzoom
         & camDefaultZoom .~ newDefaultZoom
         & camItemZoom .~ newItemZoom
@@ -215,7 +215,7 @@ rotateToOverlappingWall w =
         w
   where
     cr = you w
-    p = _crPos (you w)
+    p = (you w) ^. crPos . _xy
 
 doWallRotate :: Wall -> World -> World
 doWallRotate wl w
diff --git a/src/Dodge/Update/Cloud.hs b/src/Dodge/Update/Cloud.hs
index fc98f6bb5..8ed2a98aa 100644
--- a/src/Dodge/Update/Cloud.hs
+++ b/src/Dodge/Update/Cloud.hs
@@ -6,11 +6,12 @@ import Dodge.Data.World
 import Dodge.Zoning.Creature
 import Geometry.Vector3D
 import LensHelp
+import Linear
 
 cloudPoisonDamage :: Cloud -> World -> World
 cloudPoisonDamage c w = foldl' (flip doDam) w (filter f $ crsNearPoint clpos w)
   where
     doDam cr =
         cWorld . lWorld . creatures . ix (_crID cr) . crDamage .:~ Poison 1
-    f cr = dist3 (addZ 20 $ _crPos cr) (_clPos c) < crRad (cr ^. crType) + 20
+    f cr = dist3 (_crPos cr & _z +~ 20) (_clPos c) < crRad (cr ^. crType) + 20
     clpos = stripZ $ _clPos c
diff --git a/src/Dodge/Update/Input/InGame.hs b/src/Dodge/Update/Input/InGame.hs
index 8018d6343..4d87944e2 100644
--- a/src/Dodge/Update/Input/InGame.hs
+++ b/src/Dodge/Update/Input/InGame.hs
@@ -383,7 +383,7 @@ updateKeysInTerminal :: Int -> Universe -> Universe
 updateKeysInTerminal tmid u = fromMaybe deactivate $ do
     tm <- u ^? uvWorld . cWorld . lWorld . terminals . ix tmid
     x <- u ^? uvWorld . cWorld . lWorld . buttons . ix (tm ^. tmButtonID) . btPos
-    y <- u ^? uvWorld . cWorld . lWorld . creatures . ix 0 . crPos
+    y <- u ^? uvWorld . cWorld . lWorld . creatures . ix 0 . crPos . _xy
     case tm ^. tmStatus of
         _ | dist x y > 40 || not (hasButtonLOS x y (u ^. uvWorld)) -> Nothing
         TerminalDeactivated -> Nothing
@@ -553,7 +553,7 @@ tryCombine (i, j) w = fromMaybe w $ do
                 . ix j
                 . siPayload
                 . _Just
-    p <- w ^? cWorld . lWorld . creatures . ix 0 . crPos
+    p <- w ^? cWorld . lWorld . creatures . ix 0 . crPos . _xy
     return $
         createItemYou it (foldr (destroyInvItem 0 . NInt) w (sort is))
             & soundStart InventorySound p wrench1S Nothing
diff --git a/src/Dodge/WallCreatureCollisions.hs b/src/Dodge/WallCreatureCollisions.hs
index 3539dbe3e..83b8f16dd 100644
--- a/src/Dodge/WallCreatureCollisions.hs
+++ b/src/Dodge/WallCreatureCollisions.hs
@@ -6,6 +6,7 @@ module Dodge.WallCreatureCollisions (
     crOnWall,
 ) where
 
+import Linear
 import Dodge.Creature.Radius
 import Control.Lens
 import Data.Maybe
@@ -35,15 +36,15 @@ colCrWall w c
     --    c'' = c' & crPos %~ pushOutFromWalls rad ls
     --c'  = c & crPos %~ pushOutFromWalls' rad (reverse ls)
     c' =
-        c & crPos
+        c & crPos . _xy
             %~ pushOutFromCorners r ls'
                 . pushOutFromWalls r ls'
                 . fst
                 . flip (collidePoint p1) wls -- check push throughs
                 --        . flip (collidePointWalls' p1) wls  -- check push throughs
     r = crRad (c ^. crType) + wallBuffer
-    p1 = _crOldPos c
-    p2 = _crPos c
+    p1 = c ^. crOldPos . _xy
+    p2 = c ^. crPos . _xy
     ls = _wlLine <$> wls
     ls' = filter (uncurry $ isLHS p1) ls
     wls = filter (not . _wlWalkable) $ wlsNearRect (p2 +.+ V2 r r) (p2 -.- V2 r r) w
@@ -53,7 +54,8 @@ wallBuffer :: Float
 wallBuffer = 0
 
 pushCreatureOutFromWalls :: [(Point2, Point2)] -> Creature -> Creature
-pushCreatureOutFromWalls ls cr = cr & crPos %~ pushOutFromWalls (crRad (cr ^. crType)) ls
+pushCreatureOutFromWalls ls cr = cr & crPos . _xy 
+    %~ pushOutFromWalls (crRad (cr ^. crType)) ls
 
 -- the following tests whether or not a point is on a wall, and if so pushes it
 -- out from the wall
@@ -74,13 +76,13 @@ pushOutFromWalls rad wls p1 = case (getFirst . foldMap (First . pushOutFromWall
 pushOrCrush :: [(Point2, Point2)] -> Creature -> Creature
 pushOrCrush wls cr = case mapMaybe (pushOutFromWall (crRad (cr ^. crType)) cpos) wls of
     [] -> cr
-    (p : _) -> cr & crPos .~ p
+    (p : _) -> cr & crPos . _xy .~ p
   where
     --    (_:p:_)   -> cr
     --        & crPos .~ p
     --        & crState . crDamage %~ ( Blunt 50 cpos cpos cpos : )
 
-    cpos = _crPos cr
+    cpos = cr ^. crPos . _xy
 
 -- note the inclusion of endpoints in circOnSeg
 crOnWall :: Creature -> World -> Bool
@@ -89,7 +91,7 @@ crOnWall cr =
         . filter (not . _wlWalkable)
         . wlsNearPoint p
   where
-    p = _crPos cr
+    p = cr ^. crPos . _xy
     r = crRad (cr ^. crType)
 
 -- assumes that the wall is orientated
@@ -99,9 +101,9 @@ pushOutFromWall rad cp2 (wp1, wp2)
     | isOnWall = Just newP
     | otherwise = Nothing
   where
-    norm = errorNormalizeV 61 $ vNormal (wp1 -.- wp2)
-    wp1' = wp1 +.+ rad *.* norm
-    wp2' = wp2 +.+ rad *.* norm
+    n = errorNormalizeV 61 $ vNormal (wp1 -.- wp2)
+    wp1' = wp1 +.+ rad *.* n
+    wp2' = wp2 +.+ rad *.* n
     newP = errorClosestPointOnLine 5 wp1' wp2' cp2
     isOnWall = circOnSegNoEndpoints wp1 wp2 cp2 rad
 
diff --git a/src/Dodge/WorldEvent/ThingsHit.hs b/src/Dodge/WorldEvent/ThingsHit.hs
index ef4b8698b..b5c67b33f 100644
--- a/src/Dodge/WorldEvent/ThingsHit.hs
+++ b/src/Dodge/WorldEvent/ThingsHit.hs
@@ -15,6 +15,7 @@ module Dodge.WorldEvent.ThingsHit (
     crWlPbHit,
 ) where
 
+import Linear
 import Dodge.Data.Object
 import Dodge.Creature.Radius
 import Control.Monad
@@ -148,6 +149,6 @@ crsHitRadial :: Point2 -> Float -> World -> [(Point2, Creature)]
 crsHitRadial p r = mapMaybe f . crsNearCirc p r
   where
     f cr = do
-        let cp = _crPos cr
+        let cp = cr ^. crPos . _xy
         guard $ dist p cp < r + crRad (_crType cr)
         return (cp + (1 + crRad (_crType cr)) *.* (cp - p), cr)
diff --git a/src/Dodge/WorldPos.hs b/src/Dodge/WorldPos.hs
index 46a360f4e..41d85be41 100644
--- a/src/Dodge/WorldPos.hs
+++ b/src/Dodge/WorldPos.hs
@@ -1,10 +1,13 @@
+{-# LANGUAGE LambdaCase #-}
 module Dodge.WorldPos where
 
 import Dodge.Base.You
 import Dodge.Data.World
 import Geometry
+import Control.Lens
+import Linear
 
 doWorldPos :: WdP2 -> World -> Point2
-doWorldPos wp2 = case wp2 of
+doWorldPos = \case
     WdP2Const p -> const p
-    WdYouPos -> _crPos . you
+    WdYouPos -> (^. crPos . _xy) . you
diff --git a/src/Dodge/Zoning/Creature.hs b/src/Dodge/Zoning/Creature.hs
index 3075977df..8a707e8d5 100644
--- a/src/Dodge/Zoning/Creature.hs
+++ b/src/Dodge/Zoning/Creature.hs
@@ -10,6 +10,7 @@ import Dodge.Zoning.Common
 import FoldableHelp
 import Geometry
 import qualified IntMapHelp as IM
+import Linear
 
 crIXsNearPoint :: Point2 -> World -> IS.IntSet
 crIXsNearPoint = nearPoint crZoneSize _crZoning
@@ -42,7 +43,7 @@ crZoneSize :: Float
 crZoneSize = 15
 
 zoneOfCr :: Creature -> [Int2]
-zoneOfCr cr = zoneOfCirc crZoneSize (_crPos cr) (crRad $ cr ^. crType)
+zoneOfCr cr = zoneOfCirc crZoneSize (cr ^. crPos . _xy) (crRad $ cr ^. crType)
 
 minCrIXOn :: Ord a => (Creature -> a) -> IS.IntSet -> World -> Maybe Creature
 minCrIXOn f is w = fst <$> IS.foldl' g Nothing is
diff --git a/tags b/tags
index 968d8d3c7..31e5a68b7 100644
--- a/tags
+++ b/tags
@@ -727,7 +727,7 @@ MODStringOption	src/Dodge/Data/Universe.hs	97;"	C
 MOTOR	src/Dodge/Data/Item/Combine.hs	64;"	C
 MP2Ac	src/Dodge/Data/CreatureEffect.hs	56;"	t
 MP2NoAction	src/Dodge/Data/CreatureEffect.hs	56;"	C
-MPO	src/Dodge/Base/Collide.hs	88;"	t
+MPO	src/Dodge/Base/Collide.hs	87;"	t
 MTRS	src/Dodge/Data/MTRS.hs	6;"	t
 MTree	src/Dodge/Data/MetaTree.hs	11;"	C
 Machine	src/Dodge/Data/Machine.hs	30;"	t
@@ -2613,7 +2613,7 @@ airlockDoor	src/Dodge/Room/Airlock.hs	93;"	f
 airlockDoubleDoor	src/Dodge/Room/Airlock.hs	96;"	f
 airlockSimple	src/Dodge/Room/Airlock.hs	108;"	f
 airlockZ	src/Dodge/Room/Airlock.hs	133;"	f
-allVisibleWalls	src/Dodge/Base/Collide.hs	226;"	f
+allVisibleWalls	src/Dodge/Base/Collide.hs	215;"	f
 alongSegBy	src/Geometry.hs	40;"	f
 alteRifle	src/Dodge/Item/Held/Cane.hs	22;"	f
 ammoMagInfo	src/Dodge/Item/Info.hs	49;"	f
@@ -2631,7 +2631,7 @@ angleBetween	src/Geometry.hs	158;"	f
 angleVV	src/Geometry/Vector.hs	58;"	f
 angleVV3	src/Geometry/Vector3D.hs	122;"	f
 anyUnusedSpot	src/Dodge/PlacementSpot.hs	66;"	f
-anythingHitCirc	src/Dodge/Base/Collide.hs	349;"	f
+anythingHitCirc	src/Dodge/Base/Collide.hs	338;"	f
 applyCME	src/Dodge/HeldUse.hs	361;"	f
 applyCreatureDamage	src/Dodge/Creature/Damage.hs	13;"	f
 applyEventIO	src/Loop.hs	89;"	f
@@ -2781,7 +2781,7 @@ blunderbuss	src/Dodge/Item/Held/Cone.hs	14;"	f
 bossKeyItems	src/Dodge/LockAndKey.hs	12;"	f
 bossRoom	src/Dodge/Room/Boss.hs	61;"	f
 bounceDir	src/Dodge/Bullet.hs	109;"	f
-bouncePoint	src/Dodge/Base/Collide.hs	84;"	f
+bouncePoint	src/Dodge/Base/Collide.hs	83;"	f
 boundPoints	src/Bound.hs	10;"	f
 boundedGrid	src/Grid.hs	19;"	f
 boxABC	src/Polyhedra.hs	108;"	f
@@ -2814,8 +2814,8 @@ cFilledRect	src/Dodge/CharacterEnums.hs	6;"	f
 cWireRect	src/Dodge/CharacterEnums.hs	10;"	f
 calcSmoothScroll	src/Dodge/SmoothScroll.hs	11;"	f
 calcTexCoord	src/Tile.hs	19;"	f
-canSee	src/Dodge/Base/Collide.hs	335;"	f
-canSeeIndirect	src/Dodge/Base/Collide.hs	342;"	f
+canSee	src/Dodge/Base/Collide.hs	324;"	f
+canSeeIndirect	src/Dodge/Base/Collide.hs	331;"	f
 cancelExamineInventory	src/Dodge/Item/BackgroundEffect.hs	22;"	f
 capacitor	src/Dodge/Item/Ammo.hs	69;"	f
 cardEightVec	src/Dodge/Base/CardinalPoint.hs	17;"	f
@@ -2845,7 +2845,7 @@ chaseCritPerceptionUpdate	src/Dodge/Creature/Perception.hs	31;"	f
 chaseCritVocalization	src/Dodge/Creature/ChaseCrit.hs	37;"	f
 chasmSimpleMaze	src/Dodge/Room/Tutorial.hs	175;"	f
 chasmTest	src/Dodge/Creature/Update.hs	131;"	f
-chasmWallToSurface	src/Dodge/Base/Collide.hs	110;"	f
+chasmWallToSurface	src/Dodge/Base/Collide.hs	109;"	f
 checkCombineSelectionExists	src/Dodge/DisplayInventory.hs	100;"	f
 checkConnection	src/Dodge/Inventory/Swap.hs	65;"	f
 checkDeath	src/Dodge/Creature/Update.hs	69;"	f
@@ -2870,12 +2870,12 @@ chooseMovementLtAuto	src/Dodge/CreatureEffect.hs	105;"	f
 chooseMovementPistol	src/Dodge/Humanoid.hs	203;"	f
 chooseMovementPistol'	src/Dodge/Humanoid.hs	208;"	f
 chooseMovementSpreadGun	src/Dodge/CreatureEffect.hs	88;"	f
-circHitWall	src/Dodge/Base/Collide.hs	243;"	f
+circHitWall	src/Dodge/Base/Collide.hs	232;"	f
 circInPolygon	src/Geometry/Polygon.hs	101;"	f
-circOnAnyCr	src/Dodge/Base/Collide.hs	298;"	f
+circOnAnyCr	src/Dodge/Base/Collide.hs	287;"	f
 circOnSeg	src/Geometry.hs	101;"	f
 circOnSegNoEndpoints	src/Geometry.hs	91;"	f
-circOnSomeWall	src/Dodge/Base/Collide.hs	292;"	f
+circOnSomeWall	src/Dodge/Base/Collide.hs	281;"	f
 circle	src/Picture/Base.hs	180;"	f
 circleDecoration	src/Dodge/Placement/TopDecoration.hs	56;"	f
 circleSolid	src/Picture/Base.hs	164;"	f
@@ -2923,18 +2923,18 @@ colCrWall	src/Dodge/WallCreatureCollisions.hs	28;"	f
 colCrsWalls	src/Dodge/WallCreatureCollisions.hs	18;"	f
 collectDamageTypes	src/Dodge/Damage.hs	53;"	f
 collectInvItems	src/Dodge/Update/Input/InGame.hs	295;"	f
-collide3	src/Dodge/Base/Collide.hs	119;"	f
-collide3Chasm	src/Dodge/Base/Collide.hs	103;"	f
-collide3Chasms	src/Dodge/Base/Collide.hs	96;"	f
-collide3Creature	src/Dodge/Base/Collide.hs	153;"	f
-collide3Floors	src/Dodge/Base/Collide.hs	134;"	f
-collide3Wall	src/Dodge/Base/Collide.hs	148;"	f
-collide3Walls	src/Dodge/Base/Collide.hs	128;"	f
-collide3WallsFloor	src/Dodge/Base/Collide.hs	90;"	f
-collideCircWalls	src/Dodge/Base/Collide.hs	255;"	f
-collidePoint	src/Dodge/Base/Collide.hs	54;"	f
-collidePointTestFilter	src/Dodge/Base/Collide.hs	191;"	f
-collidePointWallsFilter	src/Dodge/Base/Collide.hs	205;"	f
+collide3	src/Dodge/Base/Collide.hs	118;"	f
+collide3Chasm	src/Dodge/Base/Collide.hs	102;"	f
+collide3Chasms	src/Dodge/Base/Collide.hs	95;"	f
+collide3Creature	src/Dodge/Base/Collide.hs	152;"	f
+collide3Floors	src/Dodge/Base/Collide.hs	133;"	f
+collide3Wall	src/Dodge/Base/Collide.hs	147;"	f
+collide3Walls	src/Dodge/Base/Collide.hs	127;"	f
+collide3WallsFloor	src/Dodge/Base/Collide.hs	89;"	f
+collideCircWalls	src/Dodge/Base/Collide.hs	244;"	f
+collidePoint	src/Dodge/Base/Collide.hs	53;"	f
+collidePointTestFilter	src/Dodge/Base/Collide.hs	180;"	f
+collidePointWallsFilter	src/Dodge/Base/Collide.hs	194;"	f
 color	src/Picture/Base.hs	108;"	f
 colorLamp	src/Dodge/Creature/Lamp.hs	10;"	f
 colorSH	src/Shape.hs	237;"	f
@@ -2996,7 +2996,7 @@ crDisplayAwareness	src/Dodge/Creature/Picture/Awareness.hs	38;"	f
 crDisplayVigilance	src/Dodge/Creature/Picture/Awareness.hs	52;"	f
 crHasTarget	src/Dodge/Creature/Test.hs	64;"	f
 crHasTargetLOS	src/Dodge/Creature/Test.hs	67;"	f
-crHeight	src/Dodge/Base/Collide.hs	164;"	f
+crHeight	src/Dodge/Base/Collide.hs	165;"	f
 crHit	src/Dodge/WorldEvent/ThingsHit.hs	112;"	f
 crIXsNearCirc	src/Dodge/Zoning/Creature.hs	32;"	f
 crIXsNearPoint	src/Dodge/Zoning/Creature.hs	14;"	f
@@ -3251,7 +3251,7 @@ doBackspace	src/Dodge/Update/Input/Text.hs	31;"	f
 doBarrelSpin	src/Dodge/Projectile/Update.hs	211;"	f
 doBlBl	src/Dodge/BlBl.hs	5;"	f
 doBlSh	src/Dodge/Block/Draw.hs	14;"	f
-doBounce	src/Dodge/Base/Collide.hs	66;"	f
+doBounce	src/Dodge/Base/Collide.hs	65;"	f
 doButtonEvent	src/Dodge/Button/Event.hs	9;"	f
 doConLoop	src/Loop.hs	137;"	f
 doConLoop'	src/Loop.hs	226;"	f
@@ -3766,10 +3766,10 @@ handleResizeEvent	src/Dodge/Event.hs	53;"	f
 handleTextInput	src/Dodge/Event/Input.hs	19;"	f
 handleWindowMoveEvent	src/Dodge/Event.hs	44;"	f
 hardQuit	src/Dodge/Concurrent.hs	32;"	f
-hasButtonLOS	src/Dodge/Base/Collide.hs	312;"	f
+hasButtonLOS	src/Dodge/Base/Collide.hs	301;"	f
 hasCaneGunDim	src/Dodge/Item/InvSize.hs	48;"	f
-hasLOS	src/Dodge/Base/Collide.hs	305;"	f
-hasLOSIndirect	src/Dodge/Base/Collide.hs	321;"	f
+hasLOS	src/Dodge/Base/Collide.hs	294;"	f
+hasLOSIndirect	src/Dodge/Base/Collide.hs	310;"	f
 hat	src/Dodge/Item/Equipment.hs	76;"	f
 head	src/DoubleStack.hs	14;"	f
 headLamp	src/Dodge/Item/Equipment.hs	79;"	f
@@ -3856,8 +3856,8 @@ interpWith	src/Dodge/Creature/Boid.hs	11;"	f
 intersectCircLine	src/Geometry/Intersect.hs	373;"	f
 intersectCircLineAlong	src/Geometry/Intersect.hs	364;"	f
 intersectCircSeg	src/Geometry/Intersect.hs	353;"	f
-intersectCircSegFirst	src/Geometry/Intersect.hs	415;"	f
-intersectCircSegTest	src/Geometry/Intersect.hs	407;"	f
+intersectCircSegFirst	src/Geometry/Intersect.hs	417;"	f
+intersectCircSegTest	src/Geometry/Intersect.hs	409;"	f
 intersectCylSeg	src/Geometry/Intersect.hs	382;"	f
 intersectLineLine	src/Geometry/Intersect.hs	19;"	f
 intersectLinePlaneAlong	src/Geometry/Intersect.hs	34;"	f
@@ -3934,7 +3934,7 @@ isUnusedLnkType	src/Dodge/PlacementSpot.hs	190;"	f
 isUsedLnkUnplaced	src/Dodge/PlacementSpot.hs	174;"	f
 isValidCommand	src/Dodge/Debug/Terminal.hs	134;"	f
 isVowel	src/StringHelp.hs	8;"	f
-isWalkable	src/Dodge/Base/Collide.hs	328;"	f
+isWalkable	src/Dodge/Base/Collide.hs	317;"	f
 isoMatrix	src/MatrixHelper.hs	30;"	f
 isotriBWH	src/Geometry/Polygon.hs	21;"	f
 itDim	src/Dodge/Item/InvSize.hs	21;"	f
@@ -4413,10 +4413,10 @@ overPos	src/Picture/Base.hs	303;"	f
 overPosObj	src/Shape.hs	277;"	f
 overPosSH	src/Shape.hs	261;"	f
 overPosSP	src/ShapePicture.hs	41;"	f
-overlapCircWalls	src/Dodge/Base/Collide.hs	232;"	f
-overlapCircWallsClosest	src/Dodge/Base/Collide.hs	278;"	f
-overlapSegCrs	src/Dodge/Base/Collide.hs	60;"	f
-overlapSegWalls	src/Dodge/Base/Collide.hs	214;"	f
+overlapCircWalls	src/Dodge/Base/Collide.hs	221;"	f
+overlapCircWallsClosest	src/Dodge/Base/Collide.hs	267;"	f
+overlapSegCrs	src/Dodge/Base/Collide.hs	59;"	f
+overlapSegWalls	src/Dodge/Base/Collide.hs	203;"	f
 overrideInternal	src/Dodge/Creature/ReaderUpdate.hs	174;"	f
 overrideMeleeCloseTarget	src/Dodge/Creature/ReaderUpdate.hs	35;"	f
 overwriteLabel	src/Dodge/Tree/Compose.hs	31;"	f
@@ -4779,7 +4779,6 @@ restrictInLinks	src/Dodge/RoomLink.hs	44;"	f
 restrictLinkType	src/Dodge/RoomLink.hs	34;"	f
 restrictOutLinks	src/Dodge/RoomLink.hs	47;"	f
 restrictRMInLinksPD	src/Dodge/Room/Link.hs	25;"	f
-restrictSeg	src/Dodge/Base/Collide.hs	173;"	f
 resumeSound	src/Dodge/SoundLogic.hs	48;"	f
 retreatActionsPistol	src/Dodge/Humanoid.hs	249;"	f
 retreatFireLauncher	src/Dodge/Humanoid.hs	270;"	f
@@ -5625,7 +5624,7 @@ viewClipBounds	src/Dodge/Debug/Picture.hs	329;"	f
 viewDistanceFromItems	src/Dodge/Update/Camera.hs	194;"	f
 viewTarget	src/Dodge/Creature/ReaderUpdate.hs	146;"	f
 violet	src/Color.hs	21;"	f
-visibleWalls	src/Dodge/Base/Collide.hs	218;"	f
+visibleWalls	src/Dodge/Base/Collide.hs	207;"	f
 visionCheck	src/Dodge/Creature/Perception.hs	153;"	f
 vocalizationTest	src/Dodge/Creature/Vocalization.hs	42;"	f
 volleyGun	src/Dodge/Item/Held/Cane.hs	15;"	f
@@ -5636,7 +5635,7 @@ wallBlips	src/Dodge/RadarSweep.hs	98;"	f
 wallBuffer	src/Dodge/WallCreatureCollisions.hs	52;"	f
 wallIsZeroLength	src/Dodge/LevelGen/StaticWalls.hs	179;"	f
 wallLine	src/Dodge/Placement/Instance/Wall.hs	71;"	f
-wallToSurface	src/Dodge/Base/Collide.hs	183;"	f
+wallToSurface	src/Dodge/Base/Collide.hs	172;"	f
 wallsFromRooms	src/Dodge/Layout.hs	132;"	f
 wallsToDraw	src/Dodge/Render/Walls.hs	17;"	f
 warmupSound	src/Dodge/HeldUse.hs	1421;"	f