FRP!
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1 changed files with 178 additions and 57 deletions
235
src/Main.hs
235
src/Main.hs
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@ -176,11 +176,13 @@ main = do
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fragmentStream
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-- SDL.showWindow window
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listen@(_, fire) <- liftIO $ newAddHandler
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listen@(_, eventFire) <- liftIO $ newAddHandler
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deltaTimer@(_, deltaFire) <- liftIO $ newAddHandler
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uniVar <- liftIO $ newTMVarIO 0 :: ContextT FRPBallCtx os IO (TMVar Float)
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transUniVar <- liftIO $ newTMVarIO (V2 1 1) ::
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ContextT FRPBallCtx os IO (TMVar (V2 Float))
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network <- liftIO $ compile (networkDescription listen uniVar transUniVar)
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transUniVar :: TMVar (V2 Float) <- liftIO $ newTMVarIO (V2 1 1)
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deltaVar :: TMVar Float <- liftIO (newTMVarIO =<< SDL.time)
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network <- liftIO $ compile
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(networkDescription listen deltaTimer uniVar transUniVar)
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forever $ do
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mrot <- liftIO $ atomically $ tryReadTMVar uniVar
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writeBuffer uniformBuffer 0 [fromMaybe 0 mrot]
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@ -198,57 +200,151 @@ main = do
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swapWindowBuffers win
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liftIO $ do
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evs <- SDL.pollEvents
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fire evs
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currentTime :: Float <- SDL.time
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oldTime <- fromMaybe (currentTime - 0.1) <$>
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(atomically $ tryReadTMVar deltaVar)
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eventFire evs
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deltaFire (currentTime - oldTime)
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atomically $ swapTMVar deltaVar currentTime
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networkDescription
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:: (AddHandler [SDL.Event], b)
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:: (AddHandler [SDL.Event], ([SDL.Event] -> IO ()))
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-> (AddHandler Float, (Float -> IO ()))
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-> TMVar Float
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-> TMVar (V2 Float)
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-> MomentIO ()
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networkDescription (listenerah, _) rotvar transvar = mdo
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(mouseah, mousefire) <- liftIO $ newAddHandler
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(passah, passfire) <- liftIO $ newAddHandler
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(clickholdah, clickholdfire) <- liftIO $ newAddHandler
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blistener <- fromChanges [] =<< registerListenerEvent
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listenerah
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mousefire
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clickholdfire
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_ <- changes blistener
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emouse <- fromAddHandler =<< registerMouseEvent passfire mouseah
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epass <- fromAddHandler =<< registerPassEvent passah
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eClickHold <- fromAddHandler =<< registerClickHoldEvent passfire clickholdah
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clickHoldBehaviour <- RBC.stepper False eClickHold
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mouseMoveBehaviour <- RBC.stepper (V2 1 1) epass
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let moveReaction = fmap (\x -> do
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let input = (\(V2 xx _) ->
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fromIntegral xx / 100 :: Float) $ SDL.mouseMotionEventRelMotion $
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(\(SDL.MouseMotionEvent dat) -> dat) $ SDL.eventPayload x
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networkDescription (listenerAH, _) (deltaAH, _) rotvar transvar = mdo
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(ballPosAH, ballPosFire) <- liftIO $ newAddHandler
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(ballVelAH, ballVelFire) <- liftIO $ newAddHandler
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(ballAccAH, ballAccFire) <- liftIO $ newAddHandler
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(mousePosAH, mousePosFire) <- liftIO $ newAddHandler
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(mouseMotionAH, mouseMotionFire) <- liftIO $ newAddHandler
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(mouseClickAH, mouseClickFire) <- liftIO $ newAddHandler
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(mouseReleaseAH, mouseReleaseFire) <- liftIO $ newAddHandler
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(mouseClickPosAH, mouseClickPosFire) <- liftIO $ newAddHandler
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ballPos :: Event (V2 Float) <- fromAddHandler =<< (liftIO $ do
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void $ register ballPosAH (\_ -> return())
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return ballPosAH
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)
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ballVel :: Event (V2 Float) <- fromAddHandler =<< (liftIO $ do
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void $ register ballVelAH (\_ -> return())
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return ballVelAH
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)
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ballAcc :: Event (V2 Float) <- fromAddHandler =<< (liftIO $ do
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void $ register ballAccAH (\_ -> return())
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return ballAccAH
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)
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mousePos :: Event (V2 Float) <- fromAddHandler =<< (liftIO $ do
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void $ register mousePosAH (\_ -> return())
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return mousePosAH
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)
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mouseMotion :: Event (V2 Float) <- fromAddHandler =<< (liftIO $ do
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void $ register mouseMotionAH (\_ -> return())
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return mouseMotionAH
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)
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mouseClick :: Event Bool <- fromAddHandler =<< (liftIO $ do
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void $ register mouseClickAH (\_ -> do
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SDL.P vect <- SDL.getAbsoluteMouseLocation
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mousePosFire $ fmap fromIntegral vect
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)
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return mouseClickAH
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)
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mouseRelease :: Event Bool <- fromAddHandler =<< (liftIO $ do
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void $ register mouseReleaseAH (\_ -> do
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SDL.P vect <- SDL.getAbsoluteMouseLocation
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mousePosFire $ fmap fromIntegral vect
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)
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return mouseReleaseAH
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)
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listener :: Event [SDL.Event] <- fromAddHandler =<< (liftIO $ do
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void $ register listenerAH
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(registerListenerEvent
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mousePosFire
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mouseMotionFire
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mouseClickFire
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mouseReleaseFire
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)
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return listenerAH
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)
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delta :: Event Float <- fromAddHandler =<< (liftIO $ do
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void $ register deltaAH (\_ -> return ())
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return deltaAH
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)
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let mouseClickPos :: Event (V2 Float) = whenE mouseClickBehaviour mousePos
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ballPosBehaviour <- stepper (V2 400 300) ballPos
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ballVelBehaviour <- stepper (V2 0 0) ballVel
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ballAccBehaviour <- stepper (V2 0 0) ballAcc
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mousePosBehaviour <- stepper (V2 0 0) mousePos
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mouseMotionBehaviour <- stepper (V2 0 0) mouseMotion
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mouseClickBehaviour <- stepper False mouseClick
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mouseReleaseBehaviour <- stepper True mouseRelease
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mouseClickPosBehaviour <- stepper (V2 0 0) mouseClickPos
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ball :: V2 Float <- valueB ballPosBehaviour
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let triangleReaction = fmap (\x -> do
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let input = (\(V2 xx _) -> xx / 100 :: Float) x
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past <- fromMaybe 0 <$> (atomically $ tryReadTMVar rotvar)
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void $ atomically $ swapTMVar rotvar (past + input)
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print input)
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emouse
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clickReaction = fmap (\x -> do
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-- print input
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)
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mouseMotionBehaviour
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ballReaction = fmap (\x -> do
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let input = (fmap (\foo -> foo - 1) x) / V2 400 300
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void $ atomically $ swapTMVar transvar input
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-- print input)
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-- print input
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)
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mouseMoveBehaviour
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printReaction = fmap print blistener
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ecPrint <- changes printReaction
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reactimate' ecPrint
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reactimate moveReaction
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ecReaction <- changes clickReaction
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reactimate' $ whenE clickHoldBehaviour ecReaction
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ballPosBehaviour
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ballAccReaction = fmap (\acc ->
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ballAccFire acc
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)
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(liftA2
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(\mPos bPos -> mPos - bPos)
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mousePosBehaviour
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ballPosBehaviour
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)
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ballVelReaction = fmap (\vel ->
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ballVelFire vel
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) $
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apply
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(pure (\acc -> (\dtime -> fmap (/ dtime) acc)) <*> ballAccBehaviour)
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delta
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ballMoveReaction = fmap (\x -> do
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ballPosFire x
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print x
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) $ apply
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(liftA2
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(\bPos bVel ->
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(\dtime -> bPos + (fmap (dtime *) bVel))
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)
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ballPosBehaviour
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ballVelBehaviour
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)
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delta
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reactimate' =<< changes triangleReaction
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reactimate' =<< changes ballReaction
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reactimate ballVelReaction
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reactimate $ whenE mouseClickBehaviour ballMoveReaction
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-- reactimate' =<< changes clickReaction
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-- reactimate ballReaction
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-- ecPrint <- changes printReaction
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-- reactimate' ecPrint
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-- reactimate moveReaction
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-- ecReaction <- changes clickReaction
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-- reactimate' $ whenE clickHoldBehaviour ecReaction
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registerListenerEvent
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:: (MonadIO m)
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=> AddHandler ([SDL.Event])
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->(SDL.Event -> IO ())
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:: (V2 Float -> IO ())
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-> (V2 Float -> IO ())
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-> (Bool -> IO ())
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-> m (AddHandler [SDL.Event])
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registerListenerEvent listenerah mousefire clickholdfire = do
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void $ liftIO $
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register listenerah $ \evs -> do
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-> (Bool -> IO ())
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-> ([SDL.Event] -> IO ())
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registerListenerEvent mousePosFire mouseMotionFire mouseClickFire mouseReleaseFire =
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\evs -> do
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let filteredMoveEvents = filter (\ev -> case SDL.eventPayload ev of
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SDL.MouseMotionEvent
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(SDL.MouseMotionEventData _ _ _ _ _) ->
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@ -256,26 +352,44 @@ registerListenerEvent listenerah mousefire clickholdfire = do
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_ -> False
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) evs
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filteredClickEvents = filter (\ev -> case SDL.eventPayload ev of
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-- SDL.MouseMotionEvent
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-- (SDL.MouseMotionEventData _ _ [SDL.ButtonLeft] _ _) ->
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-- True
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SDL.MouseMotionEvent
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(SDL.MouseMotionEventData _ _ [SDL.ButtonLeft] _ _) ->
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True
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SDL.MouseButtonEvent
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(SDL.MouseButtonEventData _ _ _ SDL.ButtonLeft _ _) ->
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(SDL.MouseButtonEventData _ SDL.Pressed _ SDL.ButtonLeft _ _) ->
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True
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_ -> False
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) evs
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filteredReleaseEvents = filter (\ev -> case SDL.eventPayload ev of
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SDL.MouseButtonEvent
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(SDL.MouseButtonEventData _ SDL.Released _ SDL.ButtonLeft _ _) ->
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True
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_ -> False
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) evs
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if null filteredMoveEvents
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then return ()
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else mousefire (head $ filteredMoveEvents)
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if null filteredClickEvents
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then
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return ()
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else
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clickholdfire
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(any (\x -> SDL.Pressed == SDL.mouseButtonEventMotion
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((\(SDL.MouseButtonEvent dat) -> dat) $
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SDL.eventPayload x)) filteredClickEvents)
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return listenerah
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then do
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mouseMotionFire (V2 0 0)
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else do
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mouseMotionFire $
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(\(SDL.Event _ (SDL.MouseMotionEvent dat)) ->
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fmap fromIntegral (SDL.mouseMotionEventRelMotion dat)
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)
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(head $ filteredMoveEvents)
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mousePosFire $
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(\(SDL.Event _ (SDL.MouseMotionEvent dat)) ->
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(\(SDL.P a) -> fmap fromIntegral a) (SDL.mouseMotionEventPos dat)
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)
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(head $ filteredMoveEvents)
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if not (null filteredClickEvents)
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then do
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mouseClickFire True
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mouseReleaseFire False
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else if not (null filteredReleaseEvents)
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then do
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mouseClickFire False
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mouseReleaseFire True
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else
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return ()
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registerMouseEvent
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:: MonadIO m
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@ -312,3 +426,10 @@ registerClickHoldEvent passfire clickholdah = do
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SDL.P vect <- SDL.getAbsoluteMouseLocation
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passfire $ fmap fromIntegral vect
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return clickholdah
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plainChanges :: Behavior a -> MomentIO (Event a)
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plainChanges b = do
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(e, handle) <- newEvent
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eb <- changes b
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reactimate' $ (fmap handle) <$> eb
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return e
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