Files
loop/src/Dodge/Creature/Damage.hs
T
2022-03-25 11:37:16 +00:00

73 lines
2.7 KiB
Haskell

module Dodge.Creature.Damage where
import Dodge.Data
import Dodge.Creature.Property
import Dodge.Particle.Spark
import Dodge.Particle.Bullet.Spawn
import Color
import Geometry
import LensHelp
import Control.Monad.State
import System.Random
import Data.List
defaultApplyDamage :: [Damage] -> Creature -> (World -> World, Creature)
defaultApplyDamage ds cr = over _2 doPoisonDam $ foldl' applyIndividualDamage (id,cr) ds'
where
(ps,ds') = partition isPoison ds
isPoison Damage{_dmType=PoisonDam} = True
isPoison _ = False
poisonDam = quot (max 0 (sum (map _dmAmount ps))) 10
doPoisonDam = crHP -~ poisonDam
applyDamageEffect :: Damage -> DamageEffect -> (World->World,Creature) -> (World -> World, Creature)
applyDamageEffect dm de (f,cr) = case de of
PushDamage push pushexp pushRad -> (f, cr
& crPos %~ (+.+ (pushAmount *.* squashNormalizeV (_crPos cr -.- fromDir))) )
where
pushAmount
| dist (_crPos cr) fromDir == 0 = 0
| otherwise = min 5 $ (push*5*pushRad / (dist (_crPos cr) fromDir * _crMass cr))**pushexp
PushBackDamage pback -> (f, cr
& crPos %~ (+.+ ((1/_crMass cr) *.* pback ))
)
TorqueDamage rot -> (f, cr & crDir +~ rot)
BounceBullet bt | crIsArmouredFrom p cr -> (f . (instantParticles .:~ bouncer), cr) -- TODO
where
bouncer = (aBulAt Nothing id (Just (_ptColor bt)) Nothing pOut reflectVel (_btDrag bt)
(_ptHitEff bt) (_ptWidth bt)
) {_ptTimer = _ptTimer bt - 1}
pOut = p +.+ 2 *.* newDir
reflectVel = magV bulVel *.* newDir
newDir = squashNormalizeV (p -.- _crPos cr)
bulVel = _ptVel bt
DamageSpawn f -> (instantParticles .:~ thepart, cr)
where
thepart = evalState (f (Left cr) dm) $ mkStdGen 0
where
fromDir = _dmFrom dm
p = _dmAt dm
applyIndividualDamage :: (World -> World, Creature) -> Damage -> (World -> World, Creature)
applyIndividualDamage (f,cr) dm = applyDamageEffect dm (_dmEffect dm) (f . f', cr')
where
(f',cr') = applyIndividualDamage' (f,cr) dm
-- & applyDamageEffect dm (_dmEffect dm)
applyIndividualDamage' :: (World -> World, Creature) -> Damage -> (World -> World, Creature)
applyIndividualDamage' (f,cr) dm = case _dmType dm of
Piercing -> applyPiercingDamage cr dm & _1 %~ (. f)
_ -> (f , newcr )
where
newcr = cr
& crHP -~ _dmAmount dm
applyPiercingDamage :: Creature -> Damage -> (World -> World, Creature)
applyPiercingDamage cr dm
| crIsArmouredFrom p cr = (colSpark 8 (brightX 10 1.5 orange) p1 (argV (p1 -.- p)) , cr)
| otherwise = (id, cr & crHP -~ _dmAmount dm)
where
p = _dmAt dm
p1 = p +.+ 2 *.* squashNormalizeV (p -.- _crPos cr)