Redo sound travel distances

src/Dodge/Creature/ArmourChase.hs

@@ -54,6 +54,7 @@ flockArmourChaseCrit = defaultCreature
 armourChaseCrit :: Creature
 armourChaseCrit = chaseCrit
     { _crName = "armourChaseCrit"
+    --, _crUpdate = defaultImpulsive []
     , _crInv = IM.fromList 
         [(0,frontArmour)
         ,(1,medkit 200)

src/Dodge/Creature/Perception.hs

@@ -2,7 +2,7 @@
 module Dodge.Creature.Perception
     ( perceptionUpdate
     , chaseCritPerceptionUpdate
-    , newSounds
+--    , newSounds
     ) where
 import Dodge.Data
 import Dodge.Creature.Vocalization
@@ -165,7 +165,13 @@ rememberSounds w cr = cr
   where
     awakeupdate | null closesounds = id
         | otherwise = crPerception . crAwakeLevel .~ Vigilant
-    closesounds = map fst (filter (soundIsClose cr) (newSounds w))
+    closesounds = map fst (filter (soundIsClose w cr) (newSounds w))
 
-soundIsClose :: Creature -> (Point2,Float) -> Bool
-soundIsClose cr (pos,vol) = vol > (_auDist . _crAudition $ _crPerception cr) (dist pos (_crPos cr))
+-- TODO work out correct form for sounds passing through walls
+soundIsClose :: World -> Creature -> (Point2,Float) -> Bool
+soundIsClose w cr (pos,vol) 
+    | dist cpos pos > 2000 = False
+    | hasLOS cpos pos w = vol > (_auDist . _crAudition $ _crPerception cr) (dist pos cpos)
+    | otherwise = False
+  where
+    cpos = _crPos cr