115 lines
4.2 KiB
Haskell
115 lines
4.2 KiB
Haskell
module Dodge.WorldEvent.Flash
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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.LightSources
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import Dodge.WorldEvent.ThingsHit
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import Dodge.WorldEvent.HelperParticle
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import Picture
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import Geometry
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import Data.Maybe (maybeToList)
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import Control.Lens
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-- projected naming: three base types of light:
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-- glare : "low lighting", draws lines around creatures and walls
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-- flare : coloured light drawn on top of picture in fixed shapes
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-- light : removal of shadows
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-- duration (subject to modification):
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-- flash : short, abrupt changes in alpha
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-- glow : continuous, potentially long, fading, slow changes in alpha
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-- flicker : potentially long, moving, abrupt changes in alpha
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glareAt :: Int -> Float -> Float -> Color -> Float -> Int -> Float -> Point2 -> World -> World
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glareAt t len wdth col alphay nrays rad p w = foldr (glareLine t len wdth col alphay p) w ps
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where ps = map ((+.+) p) $ nRaysRad nrays rad
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sparkFlashAt :: Point2 -> World -> World
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sparkFlashAt p =
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-- over particles' ((:) (flashFlareAt white 0.2 p))
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glareAt 2 10 5 white 0.05 20 30 p
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bloodFlashAt :: Point2 -> World -> World
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bloodFlashAt p =
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over particles' ((:) (flashFlareAt red 0.4 p))
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. glareAt 2 10 5 red 0.05 20 30 p
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teslaGunFlashAt :: Point2 -> World -> World
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teslaGunFlashAt p =
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over particles' ((:) (flashFlareAt cyan 0.3 p))
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. glareAt 2 10 5 cyan 0.1 20 30 p
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laserGunFlashAt :: Point2 -> World -> World
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laserGunFlashAt p =
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over particles' ((:) (flashFlareAt yellow 0.2 p))
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. glareAt 2 10 5 yellow 0.05 20 30 p
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glareLine :: Int -> Float -> Float -> Color -> Float -> Point2 -> Point2 -> World -> World
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glareLine t len wdth col alphay a b w = w & particles' %~ (maybeToList linePt ++)
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where linePt :: Maybe Particle'
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linePt = glareBetween t len wdth col alphay a b w
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glareBetween :: Int -> Float -> Float -> Color -> Float -> Point2 -> Point2 -> World -> Maybe Particle'
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glareBetween 0 _ _ _ _ _ _ _ = Nothing
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glareBetween t len wdth col alphay a b w
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= Just $ Particle' {_ptPict' = lowLightPic len wdth col alphay a b w
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,_ptUpdate' = \ w' _ -> (w',glareBetween (t-1) len wdth col alphay a b w')
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}
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lowLightPic :: Float -> Float -> Color -> Float -> Point2 -> Point2 -> World -> Picture
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lowLightPic len wdth col alphay a b w
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= case thingsHitLongLine a b w of
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((p, E3x2 wall):_)
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-> setCol . lineOfThickness wdth $ [p +.+ x, p -.- x]
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where x = len *.* (normalizeV $ wa -.- wb)
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(wa:wb:_) = _wlLine wall
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((p, E3x1 cr):_)
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-> setCol . uncurry translate cp . rotate (-0.25 * pi + argV (p -.- cp))
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$ thickArc 0 (pi/2) (_crRad cr) wdth
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where cp = _crPos cr
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_ -> blank
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where setCol = color (withAlpha alphay col) . setDepth (-0.5) . setLayer 2
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flashFlareAt :: Color -> Float -> Point2 -> Particle'
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flashFlareAt col alphax (x,y) =
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Particle'
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{ _ptPict' = setLayer 2 . setDepth (-0.9) . translate x y
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$ circleSolidCol (withAlpha 0 col) (withAlpha alphax col) 30
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, _ptUpdate' = ptTimer' 1
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}
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explosionFlashAt :: Point2 -> World -> World
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explosionFlashAt p = over tempLightSources ((:) $ tLightFade 20 150 intensityFunc p)
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. glareAt 20 10 5 white 0.3 75 150 p
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where intensityFunc x
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| x < 10 = 1 / (10 - fromIntegral x)
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| otherwise = 1
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flameGlareAt = glareAt 2 10 5 orange 0.05 8 50
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lowLightDirected :: Color -> Float -> Point2 -> Point2 -> [Float] -> World -> World
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lowLightDirected col alpha a b angles w
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= foldr (\angle w' -> glareLine 2 10 5 col alpha a (a +.+ rotateV angle b) w') w angles
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muzzleFlashAt :: Point2 -> World -> World
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muzzleFlashAt p = over particles' ((:) (muzzleFlashPt p))
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. glareAt 2 10 5 white 0.5 20 30 p
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muzzleFlashPt :: Point2 -> Particle'
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muzzleFlashPt (x,y) =
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Particle'
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{ _ptPict' = setDepth 0
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. setLayer 2
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. translate x y
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$ circleSolidCol (withAlpha 0 white) (withAlpha 0.2 white) 20
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, _ptUpdate' = ptTimer' 1
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}
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laserScopeTargetGlow :: Color -> Point2 -> World -> World
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laserScopeTargetGlow col p = glareAt 2 3 1 col 0.1 15 5 p
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