gameServer/ServerCore.hs
author nemo
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{-
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2014 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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 \-}
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module ServerCore where
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import Control.Concurrent
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import Control.Monad
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import System.Log.Logger
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import Control.Monad.Reader
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import Control.Monad.State.Strict
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import Data.Set as Set
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import Data.Unique
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import Data.Maybe
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--------------------------------------
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import CoreTypes
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import NetRoutines
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import Actions
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import OfficialServer.DBInteraction
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import ServerState
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timerLoop :: Int -> Chan CoreMessage -> IO ()
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timerLoop tick messagesChan = threadDelay 30000000 >> writeChan messagesChan (TimerAction tick) >> timerLoop (tick + 1) messagesChan
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mainLoop :: StateT ServerState IO ()
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mainLoop = forever $ do
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    -- get >>= \s -> put $! s
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    si <- gets serverInfo
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    r <- liftIO $ readChan $ coreChan si
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    case r of
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        Accept ci -> processAction (AddClient ci)
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        ClientMessage (ci, cmd) -> do
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            liftIO $ debugM "Clients" $ show ci ++ ": " ++ show cmd
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            removed <- gets removedClients
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            unless (ci `Set.member` removed) $ do
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                modify (\s -> s{clientIndex = Just ci})
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                processAction $ ReactCmd cmd
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        Remove ci ->
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            processAction (DeleteClient ci)
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        ClientAccountInfo ci uid info -> do
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            rnc <- gets roomsClients
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            exists <- liftIO $ clientExists rnc ci
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            when exists $ do
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                modify (\s -> s{clientIndex = Just ci})
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                uid' <- client's clUID
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                when (uid == hashUnique uid') $ processAction (ProcessAccountInfo info)
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                return ()
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        TimerAction tick ->
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                mapM_ processAction $
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                    PingAll
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                    : CheckVotes
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                    : [StatsAction | even tick]
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                    ++ [Cleanup | tick `mod` 100 == 0]
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startServer :: ServerInfo -> IO ()
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startServer si = do
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    noticeM "Core" $ "Listening on port " ++ show (listenPort si)
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    _ <- forkIO $
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        acceptLoop
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            (fromJust $ serverSocket si)
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            (coreChan si)
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    _ <- forkIO $ timerLoop 0 $ coreChan si
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    startDBConnection si
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    rnc <- newRoomsAndClients newRoom
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    jm <- newJoinMonitor
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    evalStateT mainLoop (ServerState Nothing si Set.empty rnc jm)