src/Xanthous/Entities/Item.hs


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{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE StandaloneDeriving #-}
--------------------------------------------------------------------------------
module Xanthous.Entities.Item
  ( Item(..)
  , itemType
  , newWithType
  ) where
--------------------------------------------------------------------------------
import           Xanthous.Prelude
import           Test.QuickCheck
import           Data.Aeson (ToJSON, FromJSON)
import           Data.Aeson.Generic.DerivingVia
--------------------------------------------------------------------------------
import           Xanthous.Entities.RawTypes hiding (Item, description)
import qualified Xanthous.Entities.RawTypes as Raw
import           Xanthous.Entities
                 ( Draw(..)
                 , Entity(..)
                 , DrawRawChar(..)
                 , Brain(..)
                 , Brainless(..)
                 , brainVia
                 )
--------------------------------------------------------------------------------

data Item = Item
  { _itemType :: ItemType
  }
  deriving stock (Eq, Show, Generic)
  deriving anyclass (CoArbitrary, Function)
  deriving Draw via DrawRawChar "_itemType" Item
  deriving (ToJSON, FromJSON)
       via WithOptions '[ FieldLabelModifier '[Drop 1] ]
                       Item
makeLenses ''Item

-- deriving via (Brainless Item) instance Brain Item
instance Brain Item where step = brainVia Brainless

instance Arbitrary Item where
  arbitrary = Item <$> arbitrary

instance Entity Item where
  blocksVision _ = False
  description = view $ itemType . Raw.description

newWithType :: ItemType -> Item
newWithType = Item