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|
{-# LANGUAGE TemplateHaskell #-}
--------------------------------------------------------------------------------
-- | Memoized versions of calculations
--------------------------------------------------------------------------------
module Xanthous.Game.Memo
( MemoState
, emptyMemoState
, clear
-- ** Memo lenses
, characterVisiblePositions
-- * Memoized values
, Memoized(UnMemoized)
, memoizeWith
, getMemoized
, runMemoized
) where
--------------------------------------------------------------------------------
import Xanthous.Prelude
--------------------------------------------------------------------------------
import Data.Aeson (ToJSON, FromJSON)
import Data.Aeson.Generic.DerivingVia
import Test.QuickCheck (CoArbitrary, Function, Arbitrary)
--------------------------------------------------------------------------------
import Xanthous.Data (Position)
import Xanthous.Data.Memo
import Xanthous.Util.QuickCheck (GenericArbitrary(GenericArbitrary))
--------------------------------------------------------------------------------
-- | Memoized calculations on the game state
data MemoState = MemoState
{ -- | Memoized version of 'Xanthous.Game.Lenses.characterVisiblePositions',
-- memoized with the position of the character
_characterVisiblePositions :: Memoized Position (Set Position)
}
deriving stock (Show, Eq, Generic)
deriving anyclass (NFData, CoArbitrary, Function)
deriving Arbitrary via GenericArbitrary MemoState
deriving (ToJSON, FromJSON)
via WithOptions '[ FieldLabelModifier '[Drop 1] ]
MemoState
makeLenses ''MemoState
emptyMemoState :: MemoState
emptyMemoState = MemoState { _characterVisiblePositions = UnMemoized }
{-# INLINE emptyMemoState #-}
clear :: ASetter' MemoState (Memoized key val) -> MemoState -> MemoState
clear = flip set UnMemoized
{-# INLINE clear #-}
{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}
|
