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|
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TemplateHaskell #-}
--------------------------------------------------------------------------------
module Xanthous.Entities.Creature
( -- * Creature
Creature(..)
-- ** Lenses
, creatureType
, hitpoints
, hippocampus
-- ** Creature functions
, newWithType
, newOnLevelWithType
, damage
, isDead
, visionRadius
-- * Hippocampus
, Hippocampus(..)
-- ** Lenses
, destination
-- ** Destination
, Destination(..)
, destinationFromPos
-- *** Lenses
, destinationPosition
, destinationProgress
) where
--------------------------------------------------------------------------------
import Xanthous.Prelude
--------------------------------------------------------------------------------
import Test.QuickCheck
import Data.Aeson.Generic.DerivingVia
import Data.Aeson (ToJSON, FromJSON)
import Control.Monad.Random (MonadRandom)
--------------------------------------------------------------------------------
import Xanthous.AI.Gormlak
import Xanthous.Entities.RawTypes hiding
(Creature, description, damage)
import qualified Xanthous.Entities.RawTypes as Raw
import Xanthous.Game.State
import Xanthous.Data
import Xanthous.Data.Entities
import Xanthous.Entities.Creature.Hippocampus
import Xanthous.Util.QuickCheck (GenericArbitrary(..))
--------------------------------------------------------------------------------
data Creature = Creature
{ _creatureType :: !CreatureType
, _hitpoints :: !Hitpoints
, _hippocampus :: !Hippocampus
}
deriving stock (Eq, Show, Ord, Generic)
deriving anyclass (NFData, CoArbitrary, Function)
deriving Draw via DrawRawCharPriority "_creatureType" 1000 Creature
deriving Arbitrary via GenericArbitrary Creature
deriving (ToJSON, FromJSON)
via WithOptions '[ FieldLabelModifier '[Drop 1] ]
Creature
makeLenses ''Creature
instance HasVisionRadius Creature where
visionRadius = const 50 -- TODO
instance Brain Creature where
step = brainVia GormlakBrain
entityCanMove = const True
instance Entity Creature where
entityAttributes _ = defaultEntityAttributes
& blocksObject .~ True
description = view $ creatureType . Raw.description
entityChar = view $ creatureType . char
entityCollision = const $ Just Combat
--------------------------------------------------------------------------------
newOnLevelWithType
:: MonadRandom m
=> Word -- ^ Level number, starting at 0
-> CreatureType
-> m (Maybe Creature)
newOnLevelWithType levelNumber cType
| maybe True (canGenerate levelNumber) $ cType ^. generateParams
= Just <$> newWithType cType
| otherwise
= pure Nothing
newWithType :: MonadRandom m => CreatureType -> m Creature
newWithType _creatureType =
let _hitpoints = _creatureType ^. maxHitpoints
_hippocampus = initialHippocampus
in pure Creature {..}
damage :: Hitpoints -> Creature -> Creature
damage amount = hitpoints %~ \hp ->
if hp <= amount
then 0
else hp - amount
isDead :: Creature -> Bool
isDead = views hitpoints (== 0)
{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-}
|
