60 lines
1.9 KiB
Haskell
60 lines
1.9 KiB
Haskell
{- | Flashes.
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projected naming conventions: three base types of light:
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glare : Draws color onto surfaces (not done)
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flare : coloured light drawn in space, fixed shapes
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light : removal of shadows (onto surfaces)
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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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-}
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module Dodge.WorldEvent.Flash
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( explosionFlashAt
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, muzFlareAt
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, ptFlicker
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, flareCircleAt
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) where
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import Dodge.Data
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import Dodge.LightSource
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import Dodge.WorldEvent.HelperParticle
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--import Dodge.Default
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import Picture
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import Geometry
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import LensHelp
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import System.Random
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muzFlareAt :: Color -> Point3 -> Float -> World -> World
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muzFlareAt col tranv dir w = w & instantParticles .:~ theFlare
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where
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theFlare = Particle
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{ _ptDraw = const $ setLayer BloomNoZWrite . translate3 tranv $ theShape
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, _ptUpdate = ptSimpleTime 2
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}
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theShape = rotate dir . color col $ polygon
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[ V2 0 0
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, V2 a (-b)
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, V2 c d
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]
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(a:b:c:d:_) = randomRs (2,20) (_randGen w)
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flareCircleAt :: Color -> Float -> Point3 -> World -> World
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flareCircleAt col alphax tranv = instantParticles .:~ Particle
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{ _ptDraw = const . setLayer BloomNoZWrite . translate3 tranv
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$ circleSolidCol (withAlpha 0 0) (withAlpha alphax col) 50
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, _ptUpdate = ptSimpleTime 1
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}
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explosionFlashAt :: Point2 -> World -> World
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explosionFlashAt p = tempLightSources .:~ tlsTimeRadFunPos 20 150 intensityFunc (addZ 20 p)
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where
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intensityFunc x
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| x < 10 = 1 / (10 - fromIntegral x)
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| otherwise = 1
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ptFlicker :: Particle -> World -> World
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ptFlicker pt
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| _ptTimer pt `mod` 7 == 0 = tempLightSources
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.:~ tlsTimeRadColPos 1 70 (0.5 *.*.* xyzV4 (_ptColor pt)) (addZ 10 $ _ptPos pt)
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| otherwise = id
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