81 lines
2 KiB
Haskell
81 lines
2 KiB
Haskell
{-# LANGUAGE MultiParamTypeClasses #-}
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{-# LANGUAGE TypeFamilies #-}
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module Types.UserData where
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import Affection
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import Control.Concurrent.STM
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import qualified SDL
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import qualified Data.Map.Strict as M
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import Codec.Picture
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-- internal imports
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import Types.Sprite
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data UserData = UserData
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{ udSubsystems :: Subsystems
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, udAssetSprites :: M.Map ImgId Sprite
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}
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type ImgId = String
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data Subsystems = Subsystems
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{ subWindow :: SubWindow
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, subMouse :: SubMouse
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}
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newtype SubWindow = SubWindow (TVar [(UUID, WindowMessage -> Affection UserData ())])
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newtype SubMouse = SubMouse (TVar [(UUID, MouseMessage -> Affection UserData ())])
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instance Participant SubWindow UserData where
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type Mesg SubWindow UserData = WindowMessage
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partSubscribers (SubWindow t) = genericSubscribers t
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partSubscribe (SubWindow t) = genericSubscribe t
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partUnSubscribe (SubWindow t) = genericUnSubscribe t
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instance SDLSubsystem SubWindow UserData where
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consumeSDLEvents = consumeSDLWindowEvents
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instance Participant SubMouse UserData where
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type Mesg SubMouse UserData = MouseMessage
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partSubscribers (SubMouse t) = genericSubscribers t
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partSubscribe (SubMouse t) = genericSubscribe t
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partUnSubscribe (SubMouse t) = genericUnSubscribe t
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instance SDLSubsystem SubMouse UserData where
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consumeSDLEvents = consumeSDLMouseEvents
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genericSubscribers
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:: TVar [(UUID, msg -> Affection UserData ())]
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-> Affection UserData [(msg -> Affection UserData ())]
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genericSubscribers t = do
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subTups <- liftIO $ readTVarIO t
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return $ map snd subTups
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genericSubscribe
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:: TVar [(UUID, msg -> Affection UserData ())]
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-> (msg -> Affection UserData ())
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-> Affection UserData UUID
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genericSubscribe t funct = do
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uu <- genUUID
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liftIO $ atomically $ modifyTVar' t ((uu, funct) :)
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return uu
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genericUnSubscribe
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:: TVar [(UUID, msg -> Affection UserData ())]
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-> UUID
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-> Affection UserData ()
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genericUnSubscribe t uu =
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liftIO $ atomically $ modifyTVar' t (filter (`filterMsg` uu))
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where
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filterMsg (u, _) p = u /= p
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