Refactor, try to limit dependencies

src/Dodge/Data/LinearShockwave.hs

@@ -1,19 +1,20 @@
-{-# LANGUAGE DeriveGeneric #-}
-{-# LANGUAGE TemplateHaskell #-}
 {-# LANGUAGE StrictData #-}
+{-# LANGUAGE TemplateHaskell #-}
+
 module Dodge.Data.LinearShockwave where
-import GHC.Generics
-import Data.Aeson
-import Geometry.Data
+
 import Control.Lens
+import Data.Aeson
+import Data.Aeson.TH
+import Geometry.Data
+
 data LinearShockwave = LinearShockwave
     { _lwPos :: Point2
     , _lwID :: Int
-    , _lwPoints :: [(Point2,Point2)]
+    , _lwPoints :: [(Point2, Point2)]
     , _lwTimer :: Int
     }
-  deriving (Eq,Ord,Show,Read,Generic)
-instance ToJSON LinearShockwave  where
-    toEncoding = genericToEncoding defaultOptions
-instance FromJSON LinearShockwave 
+    deriving (Eq, Ord, Show, Read)
+
 makeLenses ''LinearShockwave
+deriveJSON defaultOptions ''LinearShockwave