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Use wielded items to calculate damage

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Use whatever items the character has wielded, if any, to calculate the
damage they deal when attacking. Currently this shortcuts handedness to
just use the *first* item they have equipped, which is fine since it's
currently only possible to equip something in the right hand.
This commit is contained in:
Griffin Smith 2019-12-23 10:47:09 -05:00
parent 6622dd3018
commit 8ecefddbd4
2 changed files with 35 additions and 26 deletions
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4
src/Xanthous/App.hs
View file

@ -238,7 +238,7 @@ handleCommand ShowInventory = showPanel InventoryPanel >> continue
handleCommand Wield = do
uses (character . inventory . backpack)
(V.mapMaybe (\item ->
(WieldedItem item) <$> item ^. Item.itemType . wieldable))
WieldedItem item <$> item ^. Item.itemType . wieldable))
>>= \case
Empty -> say_ ["wield", "nothing"]
wieldables ->
@ -431,7 +431,7 @@ attackAt pos =
$ \(MenuResult creature) -> attackCreature creature
where
attackCreature (creatureID, creature) = do
charDamage <- use $ character . characterDamage
charDamage <- uses character characterDamage
let creature' = Creature.damage charDamage creature
msgParams = object ["creature" A..= creature']
if Creature.isDead creature'

39
src/Xanthous/Entities/Character.hs
View file

@ -37,20 +37,23 @@ module Xanthous.Entities.Character
--------------------------------------------------------------------------------
import Xanthous.Prelude
--------------------------------------------------------------------------------
import Test.QuickCheck
import Test.QuickCheck.Instances.Vector ()
import Test.QuickCheck.Arbitrary.Generic
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 Xanthous.Util.QuickCheck
import Xanthous.Game.State
import Xanthous.Entities.Item
import Xanthous.Data
(TicksPerTile, Hitpoints, Per, Ticks, (|*|), positioned, Positioned(..))
( TicksPerTile, Hitpoints, Per, Ticks, (|*|), positioned
, Positioned(..)
)
import Xanthous.Entities.RawTypes (WieldableItem, wieldable)
import qualified Xanthous.Entities.RawTypes as Raw
--------------------------------------------------------------------------------
data WieldedItem = WieldedItem
@ -116,11 +119,9 @@ doubleHanded = prism' DoubleHanded $ \case
DoubleHanded i -> Just i
_ -> Nothing
wieldedItems :: Traversal' Wielded Item
wieldedItems k (DoubleHanded wielded) = DoubleHanded <$> wieldedItem k wielded
wieldedItems k (Hands l r) = Hands
<$> (_Just . wieldedItem) k l
<*> (_Just . wieldedItem) k r
wieldedItems :: Traversal' Wielded WieldedItem
wieldedItems k (DoubleHanded wielded) = DoubleHanded <$> k wielded
wieldedItems k (Hands l r) = Hands <$> _Just k l <*> _Just k r
data Inventory = Inventory
{ _backpack :: Vector Item
@ -137,7 +138,7 @@ makeFieldsNoPrefix ''Inventory
items :: Traversal' Inventory Item
items k (Inventory bp w) = Inventory
<$> traversed k bp
<*> wieldedItems k w
<*> (wieldedItems . wieldedItem) k w
type instance Element Inventory = Item
@ -165,15 +166,15 @@ instance Semigroup Inventory where
let backpack' = inv₁ ^. backpack <> inv₂ ^. backpack
(wielded', backpack'') = case (inv₁ ^. wielded, inv₂ ^. wielded) of
(wielded₁, wielded₂@(DoubleHanded _)) ->
(wielded₂, backpack' <> fromList (wielded₁ ^.. wieldedItems))
(wielded₂, backpack' <> fromList (wielded₁ ^.. wieldedItems . wieldedItem))
(wielded₁, wielded₂@(Hands (Just _) (Just _))) ->
(wielded₂, backpack' <> fromList (wielded₁ ^.. wieldedItems))
(wielded₂, backpack' <> fromList (wielded₁ ^.. wieldedItems . wieldedItem))
(wielded₁, Hands Nothing Nothing) -> (wielded₁, backpack')
(Hands Nothing Nothing, wielded₂) -> (wielded₂, backpack')
(Hands (Just l₁) Nothing, Hands Nothing (Just r₂)) ->
(Hands (Just l₁) (Just r₂), backpack')
(wielded₁@(DoubleHanded _), wielded₂) ->
(wielded₁, backpack' <> fromList (wielded₂ ^.. wieldedItems))
(wielded₁, backpack' <> fromList (wielded₂ ^.. wieldedItems . wieldedItem))
(Hands Nothing (Just r₁), Hands Nothing (Just r₂)) ->
(Hands Nothing (Just r₂), r₁ ^. wieldedItem <| backpack')
(Hands Nothing r₁, Hands (Just l₂) Nothing) ->
@ -194,7 +195,6 @@ instance Monoid Inventory where
data Character = Character
{ _inventory :: !Inventory
, _characterName :: !(Maybe Text)
, _characterDamage :: !Hitpoints
, _characterHitpoints' :: !Double
, _speed :: TicksPerTile
}
@ -245,11 +245,20 @@ mkCharacter :: Character
mkCharacter = Character
{ _inventory = mempty
, _characterName = Nothing
, _characterDamage = 1
, _characterHitpoints' = fromIntegral initialHitpoints
, _speed = defaultSpeed
}
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
. preview (inventory . wielded . wieldedItems . wieldableItem . Raw.damage)
isDead :: Character -> Bool
isDead = (== 0) . characterHitpoints