239 lines
8.0 KiB
Haskell
239 lines
8.0 KiB
Haskell
{- |
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Creation of particles in the world.
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-}
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module Dodge.WorldEvent.SpawnParticle
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( makeGasCloud
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, aFlameParticle
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, makeFlameletTimed
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) where
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import Dodge.Data
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import Dodge.Base
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import Dodge.WorldEvent.HitEffect
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import Dodge.WorldEvent.ThingsHit
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import Dodge.WorldEvent.Cloud
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import Dodge.WorldEvent.Flash
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import Dodge.SoundLogic
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import Dodge.RandomHelp
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--import Dodge.Debug
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import Picture
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import Geometry
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import Geometry.Vector3D
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--import Geometry.Data
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import qualified IntMapHelp as IM
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import Control.Lens
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import System.Random
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import Control.Monad.State
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import Data.Tuple
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aFlameParticle
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:: Int -- ^ Timer
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-> Point2 -- ^ Position
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-> Point2 -- ^ Velocity
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-> Maybe Int -- ^ Creature id
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-> Particle
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aFlameParticle t pos vel maycid = PtZ
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{ _ptDraw = drawFlame vel
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, _ptUpdate = moveFlame vel
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, _btVel' = vel
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, _btColor' = red
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, _btPos' = pos
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, _btPassThrough' = maycid
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, _btWidth' = 4
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, _btTimer' = t
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, _btHitEffect' = destroyOnImpact (doFlameDam 1) noEff
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, _ptZ = 20
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}
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drawFlame
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:: Point2 -- ^ Rotate direction
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-> Particle
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-> Picture
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drawFlame rotd pt = thePic
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where
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ep = _btPos' pt
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thePic = pictures
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[ glow
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, aPic 3 prot2 25 (V2 (scaleChange + 1) 2 ) $ V4 2 (-1) (-1) 0.5
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, aPic 3 prot 22 (V2 (scaleChange + 0.5) 1) $ V4 1 0.5 0 2
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, aPic 1 prot3 20 (V2 scaleChange 0.5 ) $ V4 1 1 1 1
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]
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aPic :: Int -> (Point2 -> Point2) -> Float -> Point2 -> Color -> Picture
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aPic lay offset depth (V2 scalex scaley) col
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= setLayer lay
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. setDepth depth
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. uncurryV translate (offset ep)
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. rotate (pi * 0.5 + argV rotd)
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. scale scalex scaley
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. color col
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$ circleSolid 5
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glow = setLayer 1 $ setDepth 0.3 $ uncurryV translate ep
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$ circleSolidCol (withAlpha 0 orange) (withAlpha 0.02 orange) 50
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time = _btTimer' pt
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scaleChange
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| time < 80 = 3
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| otherwise = 3 - (fromIntegral time - 80) * 0.2
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prot p' = p' +.+ rotateV (fromIntegral time) (V2 0 1)
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prot2 p' = p' +.+ rotateV (negate $ fromIntegral time) (V2 0 1)
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prot3 p' = p' +.+ rotateV (2 + fromIntegral time * 0.1) (V2 0 2)
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{- TODO: add generalised area damage particles/hiteffects. -}
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moveFlame
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:: Point2 -- ^ Rotation direction
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-> World
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-> Particle
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-> (World, Maybe Particle)
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moveFlame rotd w pt
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| time <= 0 = (makeFlamerSmokeAt (addZ 20 ep) w, Nothing)
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| otherwise = case thingsHitExceptCr (_btPassThrough' pt) sp ep w of
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((_,Left _):_) -> (doSound damcrs , mvPt 0.7)
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(thing@(p,Right wl):_) -> (doSound . fst $ hiteff [thing] damcrs , rfl wl p)
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_ -> (flameFlicker pt $ doSound damcrs , mvPt 0.98)
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where
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time = _btTimer' pt
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doSound = soundContinue Flame (V2 x y) fireLoudS (Just 2)
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sp@(V2 x y) = _btPos' pt
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vel = _btVel' pt
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ep = sp +.+ vel
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mvPt speed = Just $ pt
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{ _btTimer' = time - 1
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, _btPos' = ep
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, _btPassThrough' = Nothing
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, _btVel' = speed *.* vel }
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damcrs = foldr (\cr -> fst . hiteff [(ep,Left cr)]) w
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$ IM.filter closeCrs $ _creatures w
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closeCrs cr = dist ep (_crPos cr)
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< _crRad cr + 10 - min 9 (max 0 (fromIntegral time - 80))
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+ 5 * angleCoeff (angleVV (ep -.- _crPos cr) rotd)
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angleCoeff x' = abs $ 1 - abs ( (x' * 2 - pi) / pi )
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hiteff = _btHitEffect' pt pt
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rfl wl p = Just $ pt
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{ _btTimer' = time -1
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, _btPos' = pOut p
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, _btVel' = reflV wl
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}
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pOut p = p +.+ safeNormalizeV (sp -.- p)
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reflV wall = (0.3 *.* reflectIn (uncurry (-.-) . swap $ _wlLine wall) vel )
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+.+ (0.2 *.* vel)
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makeFlameletTimed
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:: Point2 -- ^ Position
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-> Float -- ^ z position
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-> Point2 -- ^ Velocity
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-> Maybe Int -- ^ Creature id
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-> Float -- ^ Size
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-> Int -- ^ Timer
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-> World
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-> World
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makeFlameletTimed (V2 x y) z vel maycid size time w = w
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& randGen .~ g
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& particles %~ (theFlamelet :)
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where
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theFlamelet = PtZ
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{ _ptDraw = drawFlameletZ rot
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, _ptUpdate = moveFlamelet
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, _btVel' = vel
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, _btColor' = red
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, _btPos' = V2 x y
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, _btPassThrough' = maycid
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, _btWidth' = size
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, _btTimer' = time
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, _btHitEffect' = destroyOnImpact (doFlameDam 1) noEff
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, _ptZ = z
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}
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(rot ,g) = randomR (0,3) $ _randGen w
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drawFlameletZ
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:: Float -- ^ Rotation
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-> Particle
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-> Picture
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drawFlameletZ rot pt = pictures
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[ setLayer 1 pic
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, setLayer 3 piu
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, setLayer 3 pi2
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]
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where
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z = _ptZ pt
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sp = _btPos' pt
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vel = _btVel' pt
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ep = sp +.+ vel
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size = _btWidth' pt
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siz2 = size + 0.2
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time = _btTimer' pt
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piu = setDepth (z + 25)
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. uncurryV translate ep
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. color (mixColors (fromIntegral (max 0 (time-2))) (10-fromIntegral time)
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(V4 2 0 0 1) (V4 2 0 0 0)
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)
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. rotate (negate (rot - 0.1 * fromIntegral time))
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. scale s1 s1
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$ polygon (rectNSWE siz2 (-siz2) (-siz2) siz2)
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pi2 = setDepth (z + 25)
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. uncurryV translate ep
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. color (mixColors (fromIntegral (max 0 (time-2))) (10-fromIntegral time)
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(V4 2 1 0 0.5) (V4 0 0 0 0)
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)
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. rotate (negate (rot + 0.2 * fromIntegral time))
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. scale s2 s2
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$ polygon (rectNSWE siz2 (-siz2) (-siz2) siz2)
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pic = setDepth (z + 20)
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. uncurryV translate ep
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. color (mixColors (fromIntegral (max 0 (time-2))) (10-fromIntegral time)
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(V4 1 1 1 3) (V4 1 0 0 1)
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)
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. rotate (negate ( 0.1 * fromIntegral time + rot))
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. scale (0.5* sc) (0.5 *sc)
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$ polygon $ map toV2 [(-size,-size),(size,-size),(size,size),(-size,size)]
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sc = (*) 2 $ log $ 1 + fromIntegral time / 20
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s1 = (*) 2 $ log $ 2 + fromIntegral time / 40
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s2 = 0.5 * (sc + s1)
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{- Update of a flamelet.
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Applies movement and attaches damage to nearby creatures. -}
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moveFlamelet :: World -> Particle -> (World, Maybe Particle)
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moveFlamelet w pt
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| _btTimer' pt <= 0 = ( w, Nothing)
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| otherwise = (flameFlicker pt damcrs, mvPt)
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where
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sp = _btPos' pt
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vel = _btVel' pt
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ep = sp +.+ vel
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size = _btWidth' pt
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mvPt = Just $ pt & btTimer' -~ 1
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& btPos' .~ ep
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& btPassThrough' .~ Nothing
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& btVel' .~ 0.8 *.* vel
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damcrs = w & creatures %~ IM.map damifclose
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isClose cr = dist ep (_crPos cr) < _crRad cr + size
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damifclose cr
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| isClose cr = cr & crState . crDamage %~ ( Flaming 3 sp ep ep : )
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| otherwise = cr
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-- | At writing the radius is half the size of the effect area
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makeGasCloud
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:: Point2 -- ^ Position
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-> Point2 -- ^ Velocity
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-> World
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-> World
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makeGasCloud pos vel w = w
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& clouds %~ (theCloud :)
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& randGen .~ g
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where
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theCloud = Cloud
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{ _clPos = addZ 20 pos
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, _clVel = addZ 0 vel
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, _clPict = \_ -> setLayer 2 . setDepth 30 $ color (withAlpha 0.05 col)
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$ circleSolid 20
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, _clRad = 10
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, _clAlt = 25
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, _clTimer = 400
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, _clType = GasCloud
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, _clEffect = cloudPoisonDamage
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}
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(col, g) = runState (takeOne [green,yellow]) $ _randGen w
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{-
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Attach poison cloud damage to creatures near cloud.
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-}
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cloudPoisonDamage :: Cloud -> World -> World
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cloudPoisonDamage c w = w & creatures %~ flip (foldr (IM.adjust doDam)) damagedCrs
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where
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damagedCrs = IM.keys $ IM.filter f $ creaturesNearPoint (stripZ $ _clPos c) w
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f cr = dist3 (addZ 20 $ _crPos cr) (_clPos c) < _crRad cr + _clRad c + 10
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doDam cr = cr & crState . crDamage %~ (PoisonDam 1 :)
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