gameServer/EngineInteraction.hs
author Wolfgang Steffens <WolfgangSteff@gmail.com>
Mon, 14 May 2012 19:26:50 +0200
changeset 7080 dbf43c07a507
parent 6206 75e0d8169ba2
child 7766 98edc0724a28
permissions -rw-r--r--
Refactored TTexture to allow encoding sprite(s) at an arbitrary location within a (possibly shared) physical texture. The original variant only allowed encoding a sprite at the bottomleft of a larger physical texture to use NPOT sprites on POT only supporting systems.

module EngineInteraction where

import qualified Data.Set as Set
import qualified Data.List as List
import Control.Monad
import qualified Codec.Binary.Base64 as Base64
import qualified Data.ByteString.Char8 as B
import qualified Data.ByteString as BW
-------------
import CoreTypes


toEngineMsg :: B.ByteString -> B.ByteString
toEngineMsg msg = B.pack $ Base64.encode (fromIntegral (BW.length msg) : BW.unpack msg)


fromEngineMsg :: B.ByteString -> Maybe B.ByteString
fromEngineMsg msg = liftM BW.pack (Base64.decode (B.unpack msg) >>= removeLength)
    where
        removeLength (x:xs) = if length xs == fromIntegral x then Just xs else Nothing
        removeLength _ = Nothing


checkNetCmd :: B.ByteString -> (Bool, Bool)
checkNetCmd msg = check decoded
    where
        decoded = fromEngineMsg msg
        check Nothing = (False, False)
        check (Just ms) | B.length ms > 0 = let m = B.head ms in (m `Set.member` legalMessages, m == '+')
                        | otherwise        = (False, False)
        legalMessages = Set.fromList $ "M#+LlRrUuDdZzAaSjJ,sNpPwtghbc12345" ++ slotMessages
        slotMessages = "\128\129\130\131\132\133\134\135\136\137\138"

gameInfo2Replay :: GameInfo -> B.ByteString
gameInfo2Replay GameInfo{roundMsgs = rm,
        teamsAtStart = teams,
        giMapParams = params1,
        giParams = params2} = undefined