example04 (side scrolling example) finished

This commit is contained in:
nek0 2017-03-21 18:01:58 +01:00
parent efbfe14fe8
commit 22877d239b
3 changed files with 204 additions and 90 deletions

View file

@ -158,20 +158,21 @@ executable example03
else
buildable: False
-- executable example04
-- hs-source-dirs: examples
-- main-is: example04.hs
-- ghc-options: -threaded -Wall -auto-all -caf-all -rtsopts
-- default-language: Haskell2010
-- default-extensions: OverloadedStrings
-- if flag(examples)
-- build-depends: base
-- , affection
-- , sdl2
-- , gegl
-- , babl
-- , containers
-- , mtl
-- , random
-- else
-- buildable: False
executable example04
hs-source-dirs: examples
main-is: example04.hs
ghc-options: -threaded -Wall -auto-all -caf-all -rtsopts
default-language: Haskell2010
default-extensions: OverloadedStrings
if flag(examples)
build-depends: base
, affection
, sdl2
, gegl
, babl
, containers
, mtl
, random
, monad-parallel
else
buildable: False

View file

@ -4,117 +4,230 @@ import Affection
import qualified SDL
import qualified GEGL as G
import qualified BABL as B
import qualified BABL.FFI.Format as B
import qualified Data.Map.Strict as M
import Foreign.C.Types
import Foreign.Ptr (castPtr, nullPtr)
import Foreign.Marshal.Utils (new)
import System.Random (randomRIO)
import Control.Monad (unless)
import Data.List as L
import Data.Maybe (fromJust)
import Control.Monad (when)
import qualified Control.Monad.Parallel as MP
import Debug.Trace
main :: IO ()
main = do
conf <- return $ AffectionConfig
conf <- return AffectionConfig
{ initComponents = All
, windowTitle = "Affection: example00"
, windowConfig = SDL.defaultWindow
, preLoop = return ()
, drawLoop = draw
, eventLoop = handle
, updateLoop = update
, drawLoop = draw
, loadState = load
, cleanUp = clean
}
withAffection conf
data UserData = UserData
{ nodeGraph :: M.Map String G.GeglNode
, coordinates :: Maybe (Int, Int)
{ nodeGraph :: M.Map String G.GeglNode
, actors :: M.Map String (Actor String)
, foreground :: G.GeglBuffer
, lastTick :: Double
, updateActors :: [Actor String]
}
load :: SDL.Surface -> IO UserData
load surface = do
load _ = do
traceM "loading"
root <- G.gegl_node_new
traceM "new root node"
checkerboard <- G.gegl_node_new_child root $ G.checkerboardOperation
[ G.Property "color1" $ G.PropertyColor $ G.RGBA 0.4 0.4 0.4 1
, G.Property "color2" $ G.PropertyColor $ G.RGBA 0.6 0.6 0.6 1
]
traceM "checkerboard"
let bgProps = props $ prop "path" ("examples/example04/panorama.jpg" :: String)
bg <- G.gegl_node_new_child root $ G.Operation "gegl:jpg-load" bgProps
bgScaleProps <- return $ props $ do
prop "y" (600 :: Double)
prop "sampler" (fromEnum G.GeglSamplerCubic)
bgScale <- G.gegl_node_new_child root $
G.Operation "gegl:scale-size-keepaspect" bgScaleProps
bgTransProps <- return $ props $ do
prop "x" (0 :: Double)
prop "y" (0 :: Double)
prop "sampler" (fromEnum G.GeglSamplerCubic)
bgTrans <- G.gegl_node_new_child root $ G.Operation "gegl:translate" bgTransProps
traceM "background"
over <- G.gegl_node_new_child root G.defaultOverOperation
traceM "over"
nop <- G.gegl_node_new_child root $ G.Operation "gegl:nop" []
traceM "nop"
crop <- G.gegl_node_new_child root $ G.Operation "gegl:crop"
[ G.Property "x" $ G.PropertyDouble 0
, G.Property "y" $ G.PropertyDouble 0
, G.Property "width" $ G.PropertyDouble 800
, G.Property "height" $ G.PropertyDouble 600
]
traceM "crop"
format <- B.babl_format $ B.PixelFormat B.RGBA B.CFu8
pixels <- liftIO $ new =<< SDL.surfacePixels surface
sink <- G.gegl_node_new_child root $ G.Operation "gegl:buffer-sink"
[ G.Property "buffer" $ G.PropertyPointer $ castPtr $ pixels
, G.Property "format" $ G.PropertyPointer $ nullPtr
]
traceM "sink"
G.gegl_node_link_many [checkerboard, over, crop, sink]
diw <- G.gegl_node_connect_to nop "output" over "aux"
unless diw (error "connect failed")
buffer <- G.gegl_buffer_new (Just $ G.GeglRectangle 0 0 800 600) =<<
B.babl_format (B.PixelFormat B.RGBA B.CFfloat)
sink <- G.gegl_node_new_child root $ G.Operation "gegl:copy-buffer" $
props $
prop "buffer" buffer
traceM "buffer-sink"
rectProps <- return $ props $ do
prop "x" (50 :: Double)
prop "y" (290 :: Double)
prop "width" (20::Double)
prop "height" (20::Double)
prop "color" $ G.RGBA 1 0 0 0.5
rect <- G.gegl_node_new_child root $ G.Operation "gegl:rectangle" rectProps
traceM "rect"
crop <- G.gegl_node_new_child root $ G.Operation "gegl:crop" $
props $ do
prop "width" (800::Double)
prop "height" (600::Double)
G.gegl_node_link_many [bg, bgTrans, bgScale, over, crop, sink]
_ <- G.gegl_node_connect_to rect "output" over "aux"
rectActor <- return $ Actor (map
(\p -> ActorProperty
(G.propertyName p)
(G.propertyValue p)
(Just "rect")
)rectProps
) (M.singleton "rect" rect)
bgActor <- return $ Actor (map
(\p -> ActorProperty
(G.propertyName p)
(G.propertyValue p)
(Just "bg")
)bgProps ++
map (\p -> ActorProperty
(G.propertyName p)
(G.propertyValue p)
(Just "scale")
) bgScaleProps ++
map (\p -> ActorProperty
(G.propertyName p)
(G.propertyValue p)
(Just "trans")
) bgTransProps
) (M.fromList
[ ("bg", bg)
, ("trans", bgTrans)
, ("scale", bgScale)
])
traceM "connections made"
myMap <- return $ M.fromList
[ ("root" , root)
, ("over" , over)
, ("background" , checkerboard)
, ("nop" , nop)
, ("crop" , crop)
, ("background" , bg)
, ("sink" , sink)
, ("rect" , rect)
, ("crop" , crop)
]
traceM "loading complete"
return $ UserData
{ nodeGraph = myMap
, coordinates = Nothing
actorMap <- return $ M.fromList
[ ("rect", rectActor)
, ("background", bgActor)
]
return UserData
{ nodeGraph = myMap
, actors = actorMap
, foreground = buffer
, lastTick = 0
, updateActors = []
}
update :: Double -> AffectionState (AffectionData UserData) IO ()
update sec = do
traceM "updating"
ad <- get
ud <- getAffection
traceM $ (show $ 1 / sec) ++ " FPS"
ev <- liftIO $ SDL.pollEvents
mapM_ (\e ->
case SDL.eventPayload e of
SDL.MouseButtonEvent dat -> do
let (SDL.P (SDL.V2 x y)) = SDL.mouseButtonEventPos dat
drawRect
(nodeGraph ud M.! "nop")
(G.RGBA 1 0 0 0.5)
Fill
(G.GeglRectangle (fromIntegral x - 10) (fromIntegral y - 10) 20 20)
traceM $ "drewn a rectangle at " ++ show x ++ " " ++ show y
SDL.WindowClosedEvent _ -> do
traceM "seeya!"
put $ ad
{ quitEvent = True
}
_ ->
return ()
) ev
-- drawInit :: Affection UserData ()
-- drawInit = do
-- UserData{..} <- getAffection
-- present (GeglRectangle 0 0 800 600) foreground True
draw :: Affection UserData ()
draw = do
ad <- get
ud@UserData{..} <- getAffection
MP.mapM_ applyProperties updateActors
putAffection ud
{ updateActors = []
}
process (nodeGraph M.! "sink")
present (GeglRectangle 0 0 800 600) foreground True
update :: Affection UserData ()
update = do
traceM "updating"
tick <- getElapsedTime
ud <- getAffection
liftIO $ SDL.lockSurface $ drawSurface ad
liftIO $ G.gegl_node_process (nodeGraph ud M.! "sink")
liftIO $ SDL.unlockSurface $ drawSurface ad
putAffection $ ud { lastTick = tick }
let dt = tick - lastTick ud
return ()
traceM $ show (1 / dt) ++ " FPS"
handle :: SDL.EventPayload -> Affection UserData ()
handle (SDL.KeyboardEvent dat) =
when (SDL.keyboardEventKeyMotion dat == SDL.Pressed) $ do
ud <- getAffection
(G.PropertyDouble xpos) <-
return $ apValue $ fromJust $ L.find (\a -> "x" == apName a) $
actorProperties $ actors ud M.! "rect"
if xpos >= 40 && xpos <= 760
then do
nmap <- return $ M.adjust
(updateProperties $ props $ prop "x" $
case SDL.keysymKeycode $ SDL.keyboardEventKeysym dat of
SDL.KeycodeLeft -> xpos - 5
SDL.KeycodeRight -> xpos + 5
_ -> xpos
)
"rect"
(actors ud)
putAffection ud
{ actors = nmap
, updateActors = (nmap M.! "rect") : updateActors ud
}
else do
(G.PropertyDouble bgPos) <-
return $ apValue $ fromJust $ L.find (\a -> "x" == apName a) $
actorProperties $ actors ud M.! "background"
nmap <- return $ M.adjust
(updateProperties $ props $ prop "x" $
if xpos < 40
then
case SDL.keysymKeycode $ SDL.keyboardEventKeysym dat of
SDL.KeycodeLeft ->
if bgPos <= 0 then bgPos + 5 else bgPos
SDL.KeycodeRight ->
bgPos
_ -> bgPos
else
case SDL.keysymKeycode $ SDL.keyboardEventKeysym dat of
SDL.KeycodeLeft ->
bgPos
SDL.KeycodeRight ->
if True {- TODO: CHANGE-} then bgPos - 5 else bgPos
_ -> bgPos
)
"background"
(actors ud)
nmap2 <- return $ M.adjust
(updateProperties $ props $ prop "x" $
case SDL.keysymKeycode $ SDL.keyboardEventKeysym dat of
SDL.KeycodeLeft ->
if xpos < 40
then
xpos
else
xpos - 5
SDL.KeycodeRight ->
if xpos < 40
then
xpos + 5
else
xpos
_ -> xpos
)
"rect"
nmap
putAffection ud
{ actors = nmap2
, updateActors = (nmap2 M.! "background") : (nmap2 M.! "rect") : updateActors ud
}
handle (SDL.WindowClosedEvent _) = do
traceM "seeya!"
quit
handle _ =
return ()
clean :: UserData -> IO ()
clean _ = return ()

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