particle system now works as a cascade of nodes
This commit is contained in:
nek0
parent
95c008cc4e
commit
388c141e23
7 changed files with 173 additions and 104 deletions
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@ -59,7 +59,9 @@ library
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, gegl
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, babl
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, monad-loops
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, containers
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, clock
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, glib
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-- , sdl2-image
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executable example00
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@ -79,22 +81,22 @@ executable example00
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else
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buildable: False
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executable example01
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hs-source-dirs: examples
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main-is: example01.hs
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ghc-options: -threaded -Wall
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default-language: Haskell2010
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default-extensions: OverloadedStrings
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if flag(examples)
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build-depends: base
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, affection
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, sdl2
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, gegl
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, babl
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, containers
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, mtl
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else
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buildable: False
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-- executable example01
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-- hs-source-dirs: examples
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-- main-is: example01.hs
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-- ghc-options: -threaded -Wall
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-- default-language: Haskell2010
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-- default-extensions: OverloadedStrings
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-- if flag(examples)
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-- build-depends: base
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-- , affection
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-- , sdl2
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-- , gegl
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-- , babl
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-- , containers
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-- , mtl
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-- else
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-- buildable: False
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executable example02
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hs-source-dirs: examples
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@ -48,13 +48,17 @@ load _ = do
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buffer@(G.GeglBuffer b) <- G.gegl_buffer_new (Just $ G.GeglRectangle 0 0 800 600) =<<
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B.babl_format (B.PixelFormat B.RGBA B.CFfloat)
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bufPtr <- new b
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sink <- G.gegl_node_new_child root $ G.Operation "gegl:buffer-sink"
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[ G.Property "buffer" $ G.PropertyPointer $ castPtr bufPtr
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sink <- G.gegl_node_new_child root $ G.Operation "gegl:copy-buffer"
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[ G.Property "buffer" $ G.PropertyBuffer buffer
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]
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traceM "buffer-sink"
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nop <- G.gegl_node_new_child root $ G.Operation "gegl:nop" []
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traceM "nop"
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G.gegl_node_link_many [checkerboard, over, sink]
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crop <- G.gegl_node_new_child root $ G.Operation "gegl:crop"
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[ G.Property "width" $ G.PropertyDouble 800
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, G.Property "height" $ G.PropertyDouble 600
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]
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G.gegl_node_link_many [checkerboard, over, crop, sink]
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G.gegl_node_connect_to nop "output" over "aux"
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traceM "connections made"
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myMap <- return $ M.fromList
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@ -63,6 +67,7 @@ load _ = do
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, ("background" , checkerboard)
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, ("sink" , sink)
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, ("nop" , nop)
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, ("crop" , crop)
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]
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traceM "loading complete"
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return $ UserData
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@ -92,6 +97,7 @@ draw = do
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(G.GeglRectangle (x - 10) (y - 10) 20 20)
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foreground
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) coordinates
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liftIO $ G.gegl_node_process $ nodeGraph M.! "sink"
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update :: Double -> AffectionState (AffectionData UserData) IO ()
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update sec = do
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@ -29,7 +29,6 @@ main = do
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data UserData = UserData
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{ nodeGraph :: M.Map String G.GeglNode
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, foreground :: G.GeglBuffer
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, coordinates :: Maybe (Int, Int)
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, partsys :: ParticleSystem
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}
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@ -45,37 +44,47 @@ load _ = do
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traceM "checkerboard"
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over <- G.gegl_node_new_child root G.defaultOverOperation
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traceM "over"
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buffer <- G.gegl_buffer_new (Just $ G.GeglRectangle 0 0 800 600) =<<
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buffer@(G.GeglBuffer b) <- G.gegl_buffer_new (Just $ G.GeglRectangle 0 0 800 600) =<<
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B.babl_format (B.PixelFormat B.RGBA B.CFfloat)
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bufsrc <- G.gegl_node_new_child root $ G.bufferSourceOperation
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sink <- G.gegl_node_new_child root $ G.Operation "gegl:copy-buffer"
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[G.Property "buffer" $ G.PropertyBuffer buffer
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]
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traceM "buffer-source"
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G.gegl_node_link checkerboard over
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G.gegl_node_connect_to bufsrc "output" over "aux"
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traceM "buffer-sink"
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nop <- G.gegl_node_new_child root $ G.Operation "nop" []
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traceM "nop"
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crop <- G.gegl_node_new_child root $ G.Operation "gegl:crop"
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[ G.Property "width" $ G.PropertyDouble 800
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, G.Property "height" $ G.PropertyDouble 600
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]
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traceM "crop"
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G.gegl_node_link_many [checkerboard, over, crop, sink]
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G.gegl_node_connect_to nop "output" over "aux"
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traceM "connections made"
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myMap <- return $ M.fromList
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[ ("root" , root)
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, ("over" , over)
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, ("background" , checkerboard)
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, ("foreground" , bufsrc)
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, ("sink" , sink)
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, ("nop" , nop)
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, ("crop" , crop)
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]
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traceM "loading complete"
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return $ UserData
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{ nodeGraph = myMap
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, foreground = buffer
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, coordinates = Nothing
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, partsys = ParticleSystem [] over buffer
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, partsys = ParticleSystem [] nop buffer
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}
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drawInit :: Affection UserData ()
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drawInit = do
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UserData{..} <- getAffection
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present (nodeGraph M.! "over") foreground (GeglRectangle 0 0 800 600) True
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drawInit = return ()
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-- UserData{..} <- getAffection
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-- present (nodeGraph M.! "over") foreground (GeglRectangle 0 0 800 600) True
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draw :: Affection UserData ()
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draw = do
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traceM "drawing"
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UserData{..} <- getAffection
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liftIO $ G.gegl_node_process $ nodeGraph M.! "sink"
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-- ad <- get
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-- ud <- getAffection
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-- drawParticles partDraw $ particles ud
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@ -109,17 +118,30 @@ update sec = do
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vx <- liftIO $ randomRIO (-20, 20)
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vy <- liftIO $ randomRIO (-20, 20)
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life <- liftIO $ randomRIO (1, 5)
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tempRoot <- liftIO $ G.gegl_node_new
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tempOver <- liftIO $ G.gegl_node_new_child tempRoot
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G.defaultOverOperation
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tempNop <- liftIO $ G.gegl_node_new_child tempRoot $ G.Operation
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"gegl:nop" []
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liftIO $ G.gegl_node_connect_to tempNop "output" tempOver "aux"
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-- traceM $ "position is: " ++ show x ++ " " ++ show y
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-- traceM $ "velocity is: " ++ show vx ++ " " ++ show vy
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putAffection $ ud
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{ coordinates = Just (fromIntegral x, fromIntegral y)
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, partsys = (partsys ud)
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{ partsys = (partsys ud)
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{ psParts = (Particle
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{ particleLife = life
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, particlePosition = (fromIntegral x, fromIntegral y)
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, particleRotation = Rad 0
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, particleVelocity = (vx, vy)
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, particlePitchRate = Rad 0
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, particleRootNode = tempRoot
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, particleNodeGraph = M.fromList
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[ ("root", tempRoot)
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, ("over", tempOver)
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, ("nop" , tempNop)
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]
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, particleStackCont = tempOver
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, particleDrawFlange = tempNop
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}) : (psParts $ partsys ud)
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}
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}
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@ -144,7 +166,6 @@ partUpd :: Double -> Particle -> Particle
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partUpd sec p@Particle{..} =
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p
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{ particlePosition = (newX, newY)
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, particleLife = particleLife - sec
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}
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where
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newX = (fst particlePosition) + sec * (fromIntegral $ fst particleVelocity)
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@ -153,9 +174,9 @@ partUpd sec p@Particle{..} =
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partDraw :: G.GeglBuffer -> G.GeglNode -> Particle -> Affection UserData ()
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partDraw buf node Particle{..} = do
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ud <- getAffection
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drawRect
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buf
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node
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drawRect'
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particleDrawFlange
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(G.RGBA 1 0 0 0.5)
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(Line 5)
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(Fill)
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(G.GeglRectangle ((floor $ fst particlePosition) - 10) ((floor $ snd particlePosition) -10) 20 20)
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buf
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@ -83,11 +83,11 @@ withAffection AffectionConfig{..} = do
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mapM_ (invalidateDrawRequest pixels stride cpp) $ drawStack ad
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put $ ad
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{ drawStack = [] }
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-- execute user defined draw loop
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drawLoop
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-- execute user defined update loop
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updateLoop $ (fromIntegral $ toNanoSecs $ diffTimeSpec lastTime now) /
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(fromIntegral 10 ^ 9)
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-- execute user defined draw loop
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drawLoop
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-- handle all new draw requests
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ad2 <- get
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clear <- catMaybes <$> mapM (handleDrawRequest pixels stride cpp) (drawStack ad2)
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@ -2,8 +2,9 @@
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-- | Module for drawing primitives
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module Affection.Draw
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( drawRect
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, drawRect'
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(
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-- drawRect
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drawRect'
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-- , clear
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, handleDrawRequest
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, invalidateDrawRequest
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@ -13,12 +14,14 @@ module Affection.Draw
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import Affection.Types
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import Foreign.Ptr (Ptr, plusPtr, nullPtr)
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import Foreign
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import Foreign.C.Types
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import Control.Monad.State (get, put)
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import Control.Monad (when, unless)
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import System.Glib.GObject
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import qualified SDL
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import qualified BABL as B
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@ -28,43 +31,43 @@ import qualified GEGL as G
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import Debug.Trace
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-- | Draw a rectangle on target buffer
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drawRect
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:: G.GeglBuffer -- ^ Target buffer
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-> G.GeglNode -- ^ Target node
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-> G.Color -- ^ Color to draw in
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-> DrawType -- ^ Draw type
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-> GeglRectangle -- ^ Dimensions of Rectangle
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-> Affection us ()
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drawRect buf node color (Fill) rect@G.GeglRectangle{..} = do
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liftIO $ G.pixelPoke buf rect (B.PixelFormat B.RGBA B.CFdouble) G.GeglAccessReadWrite G.GeglAbyssNone $
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(\(x, y) ->
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let col = unsafeColorize color
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in
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G.Pixel x y col
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)
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ad@AffectionData{..} <- get
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put $ ad
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{ drawStack = (DrawRequest rect buf False) : drawStack
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}
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drawRect buf node color (Line size) rect@G.GeglRectangle{..} = do
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liftIO $ G.pixelPoke buf rect (B.PixelFormat B.RGBA B.CFdouble) G.GeglAccessReadWrite G.GeglAbyssNone $
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(\(x, y) ->
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let col = unsafeColorize color
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in if not ((x >= rectangleX + size && x < rectangleX + rectangleWidth - size) &&
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(y >= rectangleY + size && y < rectangleY + rectangleHeight - size))
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then
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G.Pixel x y col
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else
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G.Pixel x y $ unsafeColorize $ G.RGBA 0 0 0 0
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)
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ad@AffectionData{..} <- get
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put $ ad
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{ drawStack = (DrawRequest rect buf False) : drawStack
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}
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-- drawRect buf node color Fill (G.GeglRectangle rectangleX rectangleY rectangleWidth size)
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-- drawRect buf node color Fill (G.GeglRectangle rectangleX rectangleY size rectangleHeight)
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-- drawRect buf node color Fill (G.GeglRectangle (rectangleX + rectangleWidth - size) rectangleY size rectangleHeight)
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-- drawRect buf node color Fill (G.GeglRectangle rectangleX (rectangleY + rectangleHeight - size) rectangleWidth size)
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-- drawRect
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-- :: G.GeglBuffer -- ^ Target buffer
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-- -> G.GeglNode -- ^ Target node
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-- -> G.Color -- ^ Color to draw in
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-- -> DrawType -- ^ Draw type
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-- -> GeglRectangle -- ^ Dimensions of Rectangle
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-- -> Affection us ()
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-- drawRect buf node color (Fill) rect@G.GeglRectangle{..} = do
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-- liftIO $ G.pixelPoke buf rect (B.PixelFormat B.RGBA B.CFdouble) G.GeglAccessReadWrite G.GeglAbyssNone $
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-- (\(x, y) ->
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-- let col = unsafeColorize color
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-- in
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-- G.Pixel x y col
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-- )
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-- ad@AffectionData{..} <- get
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-- put $ ad
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-- { drawStack = (DrawRequest rect buf False) : drawStack
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-- }
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-- drawRect buf node color (Line size) rect@G.GeglRectangle{..} = do
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-- liftIO $ G.pixelPoke buf rect (B.PixelFormat B.RGBA B.CFdouble) G.GeglAccessReadWrite G.GeglAbyssNone $
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-- (\(x, y) ->
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-- let col = unsafeColorize color
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-- in if not ((x >= rectangleX + size && x < rectangleX + rectangleWidth - size) &&
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-- (y >= rectangleY + size && y < rectangleY + rectangleHeight - size))
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-- then
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-- G.Pixel x y col
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-- else
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-- G.Pixel x y $ unsafeColorize $ G.RGBA 0 0 0 0
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-- )
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-- ad@AffectionData{..} <- get
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-- put $ ad
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-- { drawStack = (DrawRequest rect buf False) : drawStack
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-- }
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-- -- drawRect buf node color Fill (G.GeglRectangle rectangleX rectangleY rectangleWidth size)
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-- -- drawRect buf node color Fill (G.GeglRectangle rectangleX rectangleY size rectangleHeight)
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-- -- drawRect buf node color Fill (G.GeglRectangle (rectangleX + rectangleWidth - size) rectangleY size rectangleHeight)
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-- -- drawRect buf node color Fill (G.GeglRectangle rectangleX (rectangleY + rectangleHeight - size) rectangleWidth size)
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drawRect'
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:: G.GeglNode -- ^ Target Node
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@ -75,7 +78,8 @@ drawRect'
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-> Affection us ()
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drawRect' node color Fill rect@GeglRectangle{..} buf = do
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ad <- get
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opNode <- liftIO $ G.gegl_node_new_child node $ G.Operation "gegl:rectangle"
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tempRoot <- liftIO $ G.gegl_node_new
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opNode <- liftIO $ G.gegl_node_new_child tempRoot $ G.Operation "gegl:rectangle"
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[ G.Property "x" $ G.PropertyDouble $ fromIntegral rectangleX
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, G.Property "y" $ G.PropertyDouble $ fromIntegral rectangleY
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, G.Property "width" $ G.PropertyDouble $ fromIntegral rectangleWidth
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@ -85,7 +89,7 @@ drawRect' node color Fill rect@GeglRectangle{..} buf = do
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diw <- liftIO $ G.gegl_node_connect_to opNode "output" node "input"
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unless diw $ error "Affection.Draw.drawRect': connect failed"
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put $ ad
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{ drawStack = (DrawRequest rect buf False) : drawStack ad
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{ drawStack = (DrawRequest rect buf (Kill tempRoot)) : drawStack ad
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}
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-- -- | force a blit of a specified area. Do not use often as it slows down the program
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@ -135,10 +139,10 @@ handleDrawRequest pixels stride cpp dr@DrawRequest{..} = do
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G.GeglAbyssNone
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liftIO $ SDL.unlockSurface surf
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-- liftIO $ SDL.updateWindowSurface $ drawWindow ad
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if requestPersist
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then
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case requestPersist of
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Yes ->
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return Nothing
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else
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Kill _ ->
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return $ Just dr
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-- | clear a previously drawn area
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@ -151,7 +155,7 @@ invalidateDrawRequest
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-> Affection us ()
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invalidateDrawRequest pixels stride cpp dr@DrawRequest{..} = do
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ad <- get
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let !surf = drawSurface ad
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let surf = drawSurface ad
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liftIO $ clearArea requestBuffer requestArea
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liftIO $ SDL.lockSurface surf
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liftIO $ G.gegl_buffer_get
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@ -164,6 +168,8 @@ invalidateDrawRequest pixels stride cpp dr@DrawRequest{..} = do
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stride
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G.GeglAbyssNone
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liftIO $ SDL.unlockSurface surf
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let Kill victim = requestPersist
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liftIO $ G.gegl_node_drop victim
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-- liftIO $ SDL.updateWindowSurface $ drawWindow ad
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-- | compute color for a single pixel
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@ -9,7 +9,9 @@ module Affection.Particle
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import Affection.Types
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import Data.Maybe (catMaybes)
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import Control.Monad
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import Data.Maybe
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import qualified GEGL as G
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@ -22,13 +24,28 @@ updateParticle
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-- This Function should take the elapsed time
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-- in seconds and the initial particle as arguments.
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-> Particle -- ^ 'Particle' to be processed
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-> Maybe Particle -- ^ resulting 'Particle'
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updateParticle time funct p@Particle{..} =
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if particleLife - time < 0
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then
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Nothing
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-> IO (Maybe Particle) -- ^ resulting 'Particle'
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updateParticle time funct pa =
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if particleLife pa - time < 0
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then do
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G.gegl_node_drop $ particleRootNode pa
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return $ Nothing
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else
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Just $ funct time $ p { particleLife = particleLife - time }
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return $ Just $ funct time $ pa { particleLife = particleLife pa - time }
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-- updateParticle time funct acc@[p] pa =
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-- if particleLife pa - time < 0
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-- then do
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-- G.gegl_node_drop $ particleRootNode pa
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-- return $ Nothing : acc
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-- else
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-- return $ (Just $ funct time $ pa { particleLife = particleLife pa - time }) : acc
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-- updateParticle time funct acc@(p:ps) pa =
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-- if particleLife pa - time < 0
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-- then do
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-- G.gegl_node_drop $ particleRootNode pa
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-- return $ Nothing : acc
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-- else
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-- return $ (Just $ funct time $ pa { particleLife = particleLife pa - time }) : acc
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drawParticles
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:: (Particle -> Affection us ())
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@ -43,7 +60,10 @@ updateParticleSystem
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-> (G.GeglBuffer -> G.GeglNode -> Particle -> Affection us ())
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||||
-> Affection us ParticleSystem
|
||||
updateParticleSystem sys sec upd draw = do
|
||||
let x = catMaybes $ map (updateParticle sec upd) (psParts sys)
|
||||
-- let x = catMaybes <$> mapM (updateParticle sec upd) (psParts sys)
|
||||
-- x <- liftIO $ catMaybes <$> foldM (updateParticle sec upd) [] (psParts sys)
|
||||
x <- liftIO $ catMaybes <$> mapM (updateParticle sec upd) (psParts sys)
|
||||
liftIO $ G.gegl_node_link_many $ map particleStackCont x ++ [psNode sys]
|
||||
mapM_ (draw (psBuffer sys) (psNode sys)) x
|
||||
return $ sys
|
||||
{ psParts = x }
|
||||
|
|
|
|||
|
|
@ -13,6 +13,7 @@ module Affection.Types
|
|||
, RGBA(..)
|
||||
, DrawType(..)
|
||||
, DrawRequest(..)
|
||||
, RequestPersist(..)
|
||||
, Angle(..)
|
||||
, ConvertAngle(..)
|
||||
-- | Particle system
|
||||
|
|
@ -30,6 +31,7 @@ module Affection.Types
|
|||
import qualified SDL.Init as SDL
|
||||
import qualified SDL.Video as SDL
|
||||
import qualified Data.Text as T
|
||||
import Data.Map
|
||||
|
||||
import qualified GEGL as G
|
||||
import qualified BABL as B
|
||||
|
|
@ -81,9 +83,13 @@ data AffectionData us = AffectionData
|
|||
data DrawRequest = DrawRequest
|
||||
{ requestArea :: G.GeglRectangle -- ^ The area to update
|
||||
, requestBuffer :: G.GeglBuffer -- ^ Buffer to draw
|
||||
, requestPersist :: Bool -- ^ Shall the drawRequest persist
|
||||
, requestPersist :: RequestPersist -- ^ Shall the drawRequest persist
|
||||
}
|
||||
|
||||
data RequestPersist
|
||||
= Yes
|
||||
| Kill G.GeglNode
|
||||
|
||||
-- | A type for storing 'DrawRequest' results to be executed frequently. TODO
|
||||
data DrawAsset = DrawAsset
|
||||
|
||||
|
|
@ -169,7 +175,15 @@ data Particle = Particle
|
|||
-- ^ particle velocity as vector of pixels per second
|
||||
, particlePitchRate :: Angle
|
||||
-- ^ Rotational velocity of particle in angle per second
|
||||
} deriving (Show, Eq)
|
||||
, particleRootNode :: G.GeglNode
|
||||
-- ^ Root 'G.GeglNode' of 'Particle'
|
||||
, particleNodeGraph :: Map String G.GeglNode
|
||||
-- ^ Node Graph of 'G.GeglNodes' per particle
|
||||
, particleStackCont :: G.GeglNode
|
||||
-- ^ 'G.GeglNode' to connect other 'Particle's to
|
||||
, particleDrawFlange :: G.GeglNode
|
||||
-- ^ 'G.GeglNode' to connect draw actions to
|
||||
}
|
||||
|
||||
data ParticleSystem = ParticleSystem
|
||||
{ psParts :: [Particle]
|
||||
|
|
|
|||
Loading…
Reference in a new issue