95 lines
3 KiB
Haskell
95 lines
3 KiB
Haskell
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{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TypeFamilies #-}
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module Affection.Subsystems.AffectionJoystick where
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import Affection.MessageBus
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import Affection.Subsystems.Class
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import Affection.Types
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import Affection.Util
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import Affection.Logging
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import Control.Monad (filterM)
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import Control.Monad.IO.Class (liftIO)
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import Control.Concurrent.STM
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import qualified Data.Vector as V
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import Foreign.C.Types (CInt(..))
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import qualified SDL
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consumeSDLJoystickEvents
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:: forall am us. (Participant am us, Mesg am us ~ JoystickMessage)
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=> am
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-> [SDL.EventPayload]
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-> Affection us [SDL.EventPayload]
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consumeSDLJoystickEvents am = doConsume
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where
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doConsume
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:: [SDL.EventPayload]
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-> Affection us [SDL.EventPayload]
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doConsume [] = return []
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doConsume (e:es) = do
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ts <- getElapsedTime
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case e of
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SDL.JoyAxisEvent dat -> do
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partEmit am (MsgJoystickAxis
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ts
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(SDL.joyAxisEventWhich dat)
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(SDL.joyAxisEventAxis dat)
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(SDL.joyAxisEventValue dat)
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)
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doConsume es
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SDL.JoyBallEvent dat -> do
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partEmit am (MsgJoystickBall
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ts
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(SDL.joyBallEventWhich dat)
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(SDL.joyBallEventBall dat)
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(SDL.joyBallEventRelMotion dat)
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)
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doConsume es
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SDL.JoyHatEvent dat -> do
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partEmit am (MsgJoystickHat
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ts
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(SDL.joyHatEventWhich dat)
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(SDL.joyHatEventHat dat)
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(SDL.joyHatEventValue dat)
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)
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doConsume es
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SDL.JoyButtonEvent dat -> do
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partEmit am (MsgJoystickButton
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ts
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(SDL.joyButtonEventWhich dat)
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(SDL.joyButtonEventButton dat)
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(SDL.joyButtonEventState dat)
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)
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doConsume es
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SDL.JoyDeviceEvent dat -> do
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partEmit am (MsgJoystickDevice
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ts
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(SDL.joyDeviceEventWhich dat)
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(SDL.joyDeviceEventConnection dat)
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)
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doConsume es
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_ -> fmap (e :) (doConsume es)
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joystickAutoConnect :: JoystickMessage -> Affection us (Maybe SDL.Joystick)
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joystickAutoConnect (MsgJoystickDevice _ which SDL.JoyDeviceAdded) = liftIO $ do
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[descr] <- V.toList <$>
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(return . V.filter (\(SDL.JoystickDevice _ id) -> id == CInt which)
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=<< SDL.availableJoysticks)
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logIO Verbose $ "Connecting Joystick " ++ show which
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Just <$> SDL.openJoystick descr
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joystickAutoConnect _ = return Nothing
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joystickAutoDisconnect :: [SDL.Joystick] -> JoystickMessage -> Affection us [SDL.Joystick]
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joystickAutoDisconnect js (MsgJoystickDevice _ which SDL.JoyDeviceRemoved) =
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liftIO $ do
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[disc] <- filterM (\j -> return . (which ==) =<< SDL.getJoystickID j) js
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logIO Verbose $ "Disconnecting Joystick " ++ show which
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SDL.closeJoystick disc
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filterM (\j -> return . (which /=) =<< SDL.getJoystickID j) js
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joystickAutoDisconnect js _ = return js
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