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Diffstat (limited to 'users/aspen/xanthous/src/Xanthous/Entities/Character.hs')
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diff --git a/users/aspen/xanthous/src/Xanthous/Entities/Character.hs b/users/aspen/xanthous/src/Xanthous/Entities/Character.hs new file mode 100644 index 0000000000..c8153086f1 --- /dev/null +++ b/users/aspen/xanthous/src/Xanthous/Entities/Character.hs @@ -0,0 +1,241 @@ +{-# LANGUAGE TemplateHaskell #-} +{-# LANGUAGE RecordWildCards #-} +-------------------------------------------------------------------------------- +module Xanthous.Entities.Character + + ( -- * Character datatype + Character(..) + , characterName + , HasInventory(..) + , characterDamage + , characterHitpoints' + , characterHitpoints + , hitpointRecoveryRate + , speed + , body + + -- *** Body + , Body(..) + , initialBody + , knuckles + , Knuckles(..) + , fistDamageChance + , damageKnuckles + , fistfightingDamage + + -- * Character functions + , mkCharacter + , pickUpItem + , isDead + , isFullyHealed + , damage + ) where +-------------------------------------------------------------------------------- +import Xanthous.Prelude +-------------------------------------------------------------------------------- +import Brick +import Data.Aeson.Generic.DerivingVia +import Data.Aeson (ToJSON, FromJSON) +import Data.Coerce (coerce) +import Test.QuickCheck +import Test.QuickCheck.Instances.Vector () +import Test.QuickCheck.Arbitrary.Generic +import Test.QuickCheck.Gen (chooseUpTo) +import Test.QuickCheck.Checkers (EqProp) +import Control.Monad.State.Lazy (execState) +import Control.Monad.Trans.State.Lazy (execStateT) +-------------------------------------------------------------------------------- +import Xanthous.Game.State +import Xanthous.Entities.Item +import Xanthous.Entities.Common +import Xanthous.Data + ( TicksPerTile, Hitpoints, Per, Ticks, (|*|), positioned ) +import qualified Xanthous.Entities.RawTypes as Raw +import Xanthous.Util (EqEqProp(EqEqProp), modifyKL) +import Xanthous.Monad (say_) +-------------------------------------------------------------------------------- + +-- | The status of the character's knuckles +-- +-- This struct is used to track the damage and then eventual build-up of +-- calluses when the character is fighting with their fists +data Knuckles = Knuckles + { -- | How damaged are the knuckles currently, from 0 to 5? + -- + -- At 0, no calluses will form + -- At 1 and up, the character will form calluses after a while + -- At 5, continuing to fistfight will deal the character even more damage + _knuckleDamage :: !Word + -- | How built-up are the character's calluses, from 0 to 5? + -- + -- Each level of calluses decreases the likelihood of being damaged when + -- fistfighting by 1%, up to 5 where the character will never be damaged + -- fistfighting + , _knuckleCalluses :: !Word + + -- | Number of turns that have passed since the last time the knuckles were + -- damaged + , _ticksSinceDamaged :: Ticks + } + deriving stock (Show, Eq, Ord, Generic) + deriving anyclass (NFData, CoArbitrary, Function) + deriving EqProp via EqEqProp Knuckles + deriving (ToJSON, FromJSON) + via WithOptions '[ FieldLabelModifier '[Drop 1] ] + Knuckles +makeLenses ''Knuckles + +instance Semigroup Knuckles where + (Knuckles d₁ c₁ t₁) <> (Knuckles d₂ c₂ t₂) = Knuckles + (min (d₁ + d₂) 5) + (min (c₁ + c₂) 5) + (max t₁ t₂) + +instance Monoid Knuckles where + mempty = Knuckles 0 0 0 + +instance Arbitrary Knuckles where + arbitrary = do + _knuckleDamage <- fromIntegral <$> chooseUpTo 5 + _knuckleCalluses <- fromIntegral <$> chooseUpTo 5 + _ticksSinceDamaged <- arbitrary + pure Knuckles{..} + +-- | Likelihood that the character fighting with their fists will damage +-- themselves +fistDamageChance :: Knuckles -> Float +fistDamageChance knuckles + | calluses == 5 = 0 + | otherwise = baseChance - (0.01 * fromIntegral calluses) + where + baseChance = 0.08 + calluses = knuckles ^. knuckleCalluses + +-- | Damage the knuckles by a level (capping at the max knuckle damage) +damageKnuckles :: Knuckles -> Knuckles +damageKnuckles = execState $ do + knuckleDamage %= min 5 . succ + ticksSinceDamaged .= 0 + +-- | Damage taken when fistfighting and 'fistDamageChance' has occurred +fistfightingDamage :: Knuckles -> Hitpoints +fistfightingDamage knuckles + | knuckles ^. knuckleDamage == 5 = 2 + | otherwise = 1 + +stepKnuckles :: Ticks -> Knuckles -> AppM Knuckles +stepKnuckles ticks = execStateT . whenM (uses knuckleDamage (> 0)) $ do + ticksSinceDamaged += ticks + whenM (uses ticksSinceDamaged (>= 2000)) $ do + dam <- knuckleDamage <<.= 0 + knuckleCalluses %= min 5 . (+ dam) + ticksSinceDamaged .= 0 + lift $ say_ ["character", "body", "knuckles", "calluses"] + + +-- | Status of the character's body +data Body = Body + { _knuckles :: !Knuckles + } + deriving stock (Show, Eq, Ord, Generic) + deriving anyclass (NFData, CoArbitrary, Function) + deriving Arbitrary via GenericArbitrary Body + deriving (ToJSON, FromJSON) + via WithOptions '[ FieldLabelModifier '[Drop 1] ] + Body +makeLenses ''Body + +initialBody :: Body +initialBody = Body { _knuckles = mempty } + +-------------------------------------------------------------------------------- + +data Character = Character + { _inventory :: !Inventory + , _characterName :: !(Maybe Text) + , _characterHitpoints' :: !Double + , _speed :: !TicksPerTile + , _body :: !Body + } + deriving stock (Show, Eq, Ord, Generic) + deriving anyclass (NFData, CoArbitrary, Function) + deriving (ToJSON, FromJSON) + via WithOptions '[ FieldLabelModifier '[Drop 1] ] + Character +makeFieldsNoPrefix ''Character + +characterHitpoints :: Character -> Hitpoints +characterHitpoints = views characterHitpoints' floor + +scrollOffset :: Int +scrollOffset = 5 + +instance Draw Character where + draw _ = visibleRegion rloc rreg $ str "@" + where + rloc = Location (negate scrollOffset, negate scrollOffset) + rreg = (2 * scrollOffset, 2 * scrollOffset) + drawPriority = const maxBound -- Character should always be on top, for now + +instance Brain Character where + step ticks = execStateT $ do + positioned . characterHitpoints' %= \hp -> + if hp > fromIntegral initialHitpoints + then hp + else hp + hitpointRecoveryRate |*| ticks + modifyKL (positioned . body . knuckles) $ lift . stepKnuckles ticks + +instance Entity Character where + description _ = "yourself" + entityChar _ = "@" + +instance Arbitrary Character where + arbitrary = genericArbitrary + +initialHitpoints :: Hitpoints +initialHitpoints = 10 + +hitpointRecoveryRate :: Double `Per` Ticks +hitpointRecoveryRate = 1.0 / (15 * coerce defaultSpeed) + +defaultSpeed :: TicksPerTile +defaultSpeed = 100 + +mkCharacter :: Character +mkCharacter = Character + { _inventory = mempty + , _characterName = Nothing + , _characterHitpoints' = fromIntegral initialHitpoints + , _speed = defaultSpeed + , _body = initialBody + } + +defaultCharacterDamage :: Hitpoints +defaultCharacterDamage = 1 + +-- | Returns the damage that the character currently does with an attack +-- TODO use double-handed/left-hand/right-hand here +characterDamage :: Character -> Hitpoints +characterDamage + = fromMaybe defaultCharacterDamage + . filter (/= 0) + . Just + . sumOf (inventory . wielded . wieldedItems . wieldableItem . Raw.damage) + +-- | Is the character fully healed up to or past their initial hitpoints? +isFullyHealed :: Character -> Bool +isFullyHealed = (>= initialHitpoints) . characterHitpoints + +-- | Is the character dead? +isDead :: Character -> Bool +isDead = (== 0) . characterHitpoints + +pickUpItem :: Item -> Character -> Character +pickUpItem it = inventory . backpack %~ (it <|) + +damage :: Hitpoints -> Character -> Character +damage (fromIntegral -> amount) = characterHitpoints' %~ \case + n | n <= amount -> 0 + | otherwise -> n - amount + +{-# ANN module ("Hlint: ignore Use newtype instead of data" :: String) #-} |