about summary refs log blame commit diff
path: root/src/Xanthous/Entities/Environment.hs
blob: c34f2e0634d6fd17477b4906d282896ff256afbb (plain) (tree)
1
2
3
4
5
6
7
8
9
                                
                                    



              


            
                

                     


                                                                                
                                                                                


                                           
                              
                 
                                     
                                                                                

                                  
                          
                               



                                                                                








                                                   
 

                                                   

                          
                          
                      
 


                             



                                                           

                                  






                                                           
                                                                     
                                              

                 











                                                   
         


                       

                                                   

                                
                          
                    
 






                            


















                                                                                
{-# LANGUAGE TemplateHaskell #-}
module Xanthous.Entities.Environment
  (
    -- * Walls
    Wall(..)
    -- * Doors
  , Door(..)
  , open
  , locked
  , unlockedDoor
    -- * Messages
  , GroundMessage(..)
  ) where
--------------------------------------------------------------------------------
import Xanthous.Prelude
--------------------------------------------------------------------------------
import Test.QuickCheck
import Brick (str)
import Brick.Widgets.Border.Style (unicode)
import Brick.Types (Edges(..))
import Data.Aeson
import Data.Aeson.Generic.DerivingVia
--------------------------------------------------------------------------------
import Xanthous.Entities.Draw.Util
import Xanthous.Data
import Xanthous.Game.State
import Xanthous.Util.QuickCheck
--------------------------------------------------------------------------------

data Wall = Wall
  deriving stock (Show, Eq, Ord, Generic, Enum)
  deriving anyclass (NFData, CoArbitrary, Function)

instance ToJSON Wall where
  toJSON = const $ String "Wall"

instance FromJSON Wall where
  parseJSON = withText "Wall" $ \case
    "Wall" -> pure Wall
    _      -> fail "Invalid Wall: expected Wall"

instance Brain Wall where step = brainVia Brainless

instance Entity Wall where
  blocksVision _ = True
  description _ = "a wall"
  entityChar _ = "┼"

instance Arbitrary Wall where
  arbitrary = pure Wall

wallEdges :: (MonoFoldable mono, Element mono ~ SomeEntity)
          => Neighbors mono -> Edges Bool
wallEdges neighs = any (entityIs @Wall) <$> edges neighs

instance Draw Wall where
  drawWithNeighbors neighs _wall =
    str . pure . borderFromEdges unicode $ wallEdges neighs

data Door = Door
  { _open   :: Bool
  , _locked :: Bool
  }
  deriving stock (Show, Eq, Ord, Generic)
  deriving anyclass (NFData, CoArbitrary, Function, ToJSON, FromJSON)
  deriving Arbitrary via GenericArbitrary Door
makeLenses ''Door

instance Draw Door where
  drawWithNeighbors neighs door
    | door ^. open
    = str . pure $ case wallEdges neighs of
        Edges True  False  False False -> vertDoor
        Edges False True   False False -> vertDoor
        Edges True  True   False False -> vertDoor
        Edges False False  True  False -> horizDoor
        Edges False False  False True  -> horizDoor
        Edges False False  True  True  -> horizDoor
        _                              -> '+'
    | otherwise    = str "\\"
    where
      horizDoor = '␣'
      vertDoor = '['

instance Brain Door where step = brainVia Brainless

instance Entity Door where
  blocksVision = not . view open
  description _ = "a door"
  entityChar _ = "d"

-- | A closed, unlocked door
unlockedDoor :: Door
unlockedDoor = Door
  { _open = False
  , _locked = False
  }

--------------------------------------------------------------------------------

newtype GroundMessage = GroundMessage Text
  deriving stock (Show, Eq, Ord, Generic)
  deriving anyclass (NFData, CoArbitrary, Function)
  deriving Arbitrary via GenericArbitrary GroundMessage
  deriving (ToJSON, FromJSON)
       via WithOptions '[ 'TagSingleConstructors 'True
                        , 'SumEnc 'ObjWithSingleField
                        ]
           GroundMessage
  deriving Draw
       via DrawStyledCharacter ('Just 'Yellow) 'Nothing "≈"
           GroundMessage
  deriving Entity
       via DeriveEntity 'False "a message on the ground. Press r. to read it."
                        "≈"
           GroundMessage
instance Brain GroundMessage where step = brainVia Brainless