gameServer/RoomsAndClients.hs
author tiyuri@gmail.com
Wed, 01 Sep 2010 22:18:13 +0100
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permissions -rw-r--r--
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module RoomsAndClients(
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    RoomIndex(),
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    ClientIndex(),
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    MRoomsAndClients(),
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    IRoomsAndClients(),
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    newRoomsAndClients,
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    addRoom,
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    addClient,
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    removeRoom,
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    removeClient,
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    modifyRoom,
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    modifyClient,
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    lobbyId,
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    moveClientToLobby,
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    moveClientToRoom,
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    clientRoom,
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    clientRoomM,
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    clientExists,
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    client,
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    room,
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    client'sM,
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    room'sM,
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    allClientsM,
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    clientsM,
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    roomClientsM,
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    roomClientsIndicesM,
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    withRoomsAndClients,
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    allRooms,
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    allClients,
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    clientRoom,
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    showRooms,
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    roomClients
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    ) where
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import Store
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import Control.Monad
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data Room r = Room {
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    roomClients' :: [ClientIndex],
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    room' :: r
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    }
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data Client c = Client {
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    clientRoom' :: RoomIndex,
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    client' :: c
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    }
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newtype RoomIndex = RoomIndex ElemIndex
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    deriving (Eq)
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newtype ClientIndex = ClientIndex ElemIndex
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    deriving (Eq, Show, Read, Ord)
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instance Show RoomIndex where
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    show (RoomIndex i) = 'r' : show i
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unRoomIndex :: RoomIndex -> ElemIndex
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unRoomIndex (RoomIndex r) = r
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unClientIndex :: ClientIndex -> ElemIndex
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unClientIndex (ClientIndex c) = c
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newtype MRoomsAndClients r c = MRoomsAndClients (MStore (Room r), MStore (Client c))
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newtype IRoomsAndClients r c = IRoomsAndClients (IStore (Room r), IStore (Client c))
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lobbyId :: RoomIndex
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lobbyId = RoomIndex firstIndex
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newRoomsAndClients :: r -> IO (MRoomsAndClients r c)
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newRoomsAndClients r = do
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    rooms <- newStore
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    clients <- newStore
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    let rnc = MRoomsAndClients (rooms, clients)
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    ri <- addRoom rnc r
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    when (ri /= lobbyId) $ error "Empty struct inserts not at firstIndex index"
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    return rnc
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roomAddClient :: ClientIndex -> Room r -> Room r
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roomAddClient cl room = room{roomClients' = cl : roomClients' room}
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roomRemoveClient :: ClientIndex -> Room r -> Room r
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roomRemoveClient cl room = room{roomClients' = filter (/= cl) $ roomClients' room}
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addRoom :: MRoomsAndClients r c -> r -> IO RoomIndex
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addRoom (MRoomsAndClients (rooms, _)) room = do
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    i <- addElem rooms (Room  [] room)
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    return $ RoomIndex i
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addClient :: MRoomsAndClients r c -> c -> IO ClientIndex
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addClient (MRoomsAndClients (rooms, clients)) client = do
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    i <- addElem clients (Client lobbyId client)
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    modifyElem rooms (roomAddClient (ClientIndex i)) (unRoomIndex lobbyId)
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    return $ ClientIndex i
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removeRoom :: MRoomsAndClients r c -> RoomIndex -> IO ()
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removeRoom rnc@(MRoomsAndClients (rooms, _)) room@(RoomIndex ri) 
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    | room == lobbyId = error "Cannot delete lobby"
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    | otherwise = do
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        clIds <- liftM roomClients' $ readElem rooms ri
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        forM_ clIds (moveClientToLobby rnc)
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        removeElem rooms ri
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removeClient :: MRoomsAndClients r c -> ClientIndex -> IO ()
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removeClient (MRoomsAndClients (rooms, clients)) cl@(ClientIndex ci) = do
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    RoomIndex ri <- liftM clientRoom' $ readElem clients ci
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    modifyElem rooms (roomRemoveClient cl) ri
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    removeElem clients ci
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modifyRoom :: MRoomsAndClients r c -> (r -> r) -> RoomIndex -> IO ()
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modifyRoom (MRoomsAndClients (rooms, _)) f (RoomIndex ri) = modifyElem rooms (\r -> r{room' = f $ room' r}) ri
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modifyClient :: MRoomsAndClients r c -> (c -> c) -> ClientIndex -> IO ()
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modifyClient (MRoomsAndClients (_, clients)) f (ClientIndex ci) = modifyElem clients (\c -> c{client' = f $ client' c}) ci
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moveClientInRooms :: MRoomsAndClients r c -> RoomIndex -> RoomIndex -> ClientIndex -> IO ()
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moveClientInRooms (MRoomsAndClients (rooms, clients)) (RoomIndex riFrom) rt@(RoomIndex riTo) cl@(ClientIndex ci) = do
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    modifyElem rooms (roomRemoveClient cl) riFrom
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    modifyElem rooms (roomAddClient cl) riTo
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    modifyElem clients (\c -> c{clientRoom' = rt}) ci
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moveClientToLobby :: MRoomsAndClients r c -> ClientIndex -> IO ()
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moveClientToLobby rnc ci = do
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    room <- clientRoomM rnc ci
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    moveClientInRooms rnc room lobbyId ci
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moveClientToRoom :: MRoomsAndClients r c -> RoomIndex -> ClientIndex -> IO ()
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moveClientToRoom rnc ri ci = moveClientInRooms rnc lobbyId ri ci
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clientExists :: MRoomsAndClients r c -> ClientIndex -> IO Bool
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clientExists (MRoomsAndClients (_, clients)) (ClientIndex ci) = elemExists clients ci
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clientRoomM :: MRoomsAndClients r c -> ClientIndex -> IO RoomIndex
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clientRoomM (MRoomsAndClients (_, clients)) (ClientIndex ci) = liftM clientRoom' (clients `readElem` ci)
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client'sM :: MRoomsAndClients r c -> (c -> a) -> ClientIndex -> IO a
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client'sM (MRoomsAndClients (_, clients)) f (ClientIndex ci) = liftM (f . client') (clients `readElem` ci)
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room'sM :: MRoomsAndClients r c -> (r -> a) -> RoomIndex -> IO a
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room'sM (MRoomsAndClients (rooms, _)) f (RoomIndex ri) = liftM (f . room') (rooms `readElem` ri)
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allClientsM :: MRoomsAndClients r c -> IO [ClientIndex]
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allClientsM (MRoomsAndClients (_, clients)) = liftM (map ClientIndex) $ indicesM clients
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clientsM :: MRoomsAndClients r c -> IO [c]
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clientsM (MRoomsAndClients (_, clients)) = indicesM clients >>= mapM (\ci -> liftM client' $ readElem clients ci)
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roomClientsIndicesM :: MRoomsAndClients r c -> RoomIndex -> IO [ClientIndex]
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roomClientsIndicesM (MRoomsAndClients (rooms, clients)) (RoomIndex ri) = liftM roomClients' (rooms `readElem` ri)
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roomClientsM :: MRoomsAndClients r c -> RoomIndex -> IO [c]
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roomClientsM (MRoomsAndClients (rooms, clients)) (RoomIndex ri) = liftM roomClients' (rooms `readElem` ri) >>= mapM (\(ClientIndex ci) -> liftM client' $ readElem clients ci)
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withRoomsAndClients :: MRoomsAndClients r c -> (IRoomsAndClients r c -> a) -> IO a
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withRoomsAndClients (MRoomsAndClients (rooms, clients)) f =
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    withIStore2 rooms clients (\r c -> f $ IRoomsAndClients (r, c))
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----------------------------------------
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----------- IRoomsAndClients -----------
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showRooms :: (Show r, Show c) => IRoomsAndClients r c -> String
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showRooms rnc@(IRoomsAndClients (rooms, clients)) = concatMap showRoom (allRooms rnc)
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    where
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    showRoom r = unlines $ ((show r) ++ ": " ++ (show $ room' $ rooms ! (unRoomIndex r))) : (map showClient (roomClients' $ rooms ! (unRoomIndex r)))
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    showClient c = "    " ++ (show c) ++ ": " ++ (show $ client' $ clients ! (unClientIndex c))
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allRooms :: IRoomsAndClients r c -> [RoomIndex]
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allRooms (IRoomsAndClients (rooms, _)) = map RoomIndex $ indices rooms
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allClients :: IRoomsAndClients r c -> [ClientIndex]
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allClients (IRoomsAndClients (_, clients)) = map ClientIndex $ indices clients
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clientRoom :: IRoomsAndClients r c -> ClientIndex -> RoomIndex
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clientRoom (IRoomsAndClients (_, clients)) (ClientIndex ci) = clientRoom' (clients ! ci)
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client :: IRoomsAndClients r c -> ClientIndex -> c
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client (IRoomsAndClients (_, clients)) (ClientIndex ci) = client' (clients ! ci)
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room :: IRoomsAndClients r c -> RoomIndex -> r
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room (IRoomsAndClients (rooms, _)) (RoomIndex ri) = room' (rooms ! ri)
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roomClients :: IRoomsAndClients r c -> RoomIndex -> [ClientIndex]
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roomClients (IRoomsAndClients (rooms, _)) (RoomIndex ri) = roomClients' $ (rooms ! ri)