Further simplify walk cycle

src/Dodge/Creature/State/WalkCycle.hs

@@ -1,7 +1,7 @@
 {-# LANGUAGE LambdaCase #-}
 
 module Dodge.Creature.State.WalkCycle (
-    updateWalkCycle,
+    --    updateWalkCycle,
     footstepSideEffect,
 ) where
 
@@ -15,6 +15,10 @@ updateWalkCycle s = case s ^. carriage of
     Walking x ff | x > s ^. strideLength -> s & carriage .~ Walking 0 (normalGait ff)
     _ -> s
 
+resetStride :: Carriage -> Carriage
+resetStride (Walking _ ff) = Walking 0 (normalGait ff)
+resetStride x = x
+
 normalGait :: FootForward -> FootForward
 normalGait = \case
     LeftForward -> RightForward
@@ -23,16 +27,18 @@ normalGait = \case
     WasRightForward -> LeftForward
 
 footstepSideEffect :: Creature -> World -> World
-footstepSideEffect cr = over (cWorld . lWorld . creatures . ix (cr ^. crID) . crStance) updateWalkCycle .
-  case cr ^. crStance . carriage of
-    Walking x ff
-        | x > cr ^. crStance . strideLength ->
-            soundMultiFrom
-                [FootstepSound i | i <- [0 .. 10]]
-                (cr ^. crPos)
-                (chooseFootSound ff)
-                Nothing
-    _ -> id
+footstepSideEffect cr =
+        case cr ^. crStance . carriage of
+            Walking x ff
+                | x > cr ^. crStance . strideLength ->
+                    soundMultiFrom
+                        [FootstepSound i | i <- [0 .. 10]]
+                        (cr ^. crPos)
+                        (chooseFootSound ff)
+                        Nothing
+                .
+                    over (cWorld . lWorld . creatures . ix (cr ^. crID) . crStance . carriage) resetStride
+            _ -> id
 
 chooseFootSound :: FootForward -> SoundID
 chooseFootSound LeftForward = foot1S