Add concept of GameRoom, check viewing distance based on rooms

src/Dodge/GameRoom.hs

@@ -0,0 +1,10 @@
+{- | GameRooms contain information about given positions in the world
+ -}
+module Dodge.GameRoom
+    where
+import Geometry
+
+data GameRoom = GameRoom
+    { _grViewpoints :: [Point2]
+    , _grBound :: [Point2]
+    }