39 lines
1.3 KiB
Haskell
39 lines
1.3 KiB
Haskell
{-# LANGUAGE LambdaCase #-}
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module Dodge.Damage
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( damageCrWl
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, damageDirection
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, damageCrWlID
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, maxDamageType
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) where
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import qualified Data.Map.Strict as M
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import Dodge.Data.CrWlID
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import Dodge.Data.World
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import FoldableHelp
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import Geometry.Vector
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import LensHelp
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import qualified IntMapHelp as IM
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damageCrWlID :: Damage -> CrWlID -> World -> World
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damageCrWlID dam = \case
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NothingID -> id
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CrID cid -> cWorld . lWorld . creatures . ix cid . crState . csDamage .:~ dam
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WlID wlid -> cWorld . lWorld . wallDamages %~ IM.insertWith (++) wlid [dam]
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damageCrWl :: Damage -> Either Creature Wall -> World -> World
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damageCrWl dt (Left cr) = cWorld . lWorld . creatures . ix (_crID cr) . crState . csDamage .:~ dt
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damageCrWl dt (Right wl) = cWorld . lWorld . wallDamages %~ IM.insertWith (++) (_wlID wl) [dt]
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damageDirection :: [Damage] -> Maybe Float
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damageDirection ds = do
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dm <- safeMinimumOn (negate . _dmAmount) ds
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safeArgV (_dmTo dm -.- _dmFrom dm)
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collectDamageTypes :: [Damage] -> M.Map DamageType Int
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collectDamageTypes = foldl' (flip f) M.empty
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where
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f dm = M.insertWith (+) (_dmType dm) (_dmAmount dm)
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maxDamageType :: [Damage] -> Maybe (DamageType, Int)
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maxDamageType = safeMinimumOn (negate . snd) . M.assocs . collectDamageTypes
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