gameServer/RoomsAndClients.hs
author Mitchell Kember <mk12360@gmail.com>
Fri, 30 Nov 2012 20:00:53 -0500
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permissions -rw-r--r--
Google Code-in: Center help text field Modifies the grid layout slightly so that the help text which appears when hovering over certain elements is centered with respect to the window, even when there are more buttons on one side. https://google-melange.appspot.com/gci/task/view/google/gci2012/7968226
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{-# LANGUAGE BangPatterns, GeneralizedNewtypeDeriving #-}
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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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    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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import Control.DeepSeq
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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, NFData)
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newtype ClientIndex = ClientIndex ElemIndex
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    deriving (Eq, Show, Read, Ord, NFData)
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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 rm = let cls = cl : roomClients' rm; nr = rm{roomClients' = cls} in cls `deepseq` nr
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roomRemoveClient :: ClientIndex -> Room r -> Room r
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roomRemoveClient cl rm = let cls = filter (/= cl) $ roomClients' rm; nr = rm{roomClients' = cls} in cls `deepseq` nr
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addRoom :: MRoomsAndClients r c -> r -> IO RoomIndex
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addRoom (MRoomsAndClients (rooms, _)) rm = do
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    i <- addElem rooms (Room  [] rm)
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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)) cl = do
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    i <- addElem clients (Client lobbyId cl)
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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, _)) rm@(RoomIndex ri)
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    | rm == 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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    rm <- clientRoomM rnc ci
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    moveClientInRooms rnc rm lobbyId ci
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moveClientToRoom :: MRoomsAndClients r c -> RoomIndex -> ClientIndex -> IO ()
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moveClientToRoom rnc = moveClientInRooms rnc lobbyId
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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 (liftM client' . readElem clients)
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roomClientsIndicesM :: MRoomsAndClients r c -> RoomIndex -> IO [ClientIndex]
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roomClientsIndicesM (MRoomsAndClients (rooms, _)) (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)