tools/replay2hwd.hs
author unc0rr
Sat, 12 Oct 2019 23:13:32 +0200
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{-# LANGUAGE ScopedTypeVariables, OverloadedStrings #-}
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import qualified Data.ByteString.Char8 as B
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import Control.Exception as E
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import System.Environment
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import Control.Monad
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import qualified Data.Map as Map
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import Data.Word
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import Data.Int
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import qualified Codec.Binary.Base64 as Base64
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import qualified Data.ByteString.Lazy as BL
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import qualified Data.ByteString as BW
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import qualified Codec.Compression.Zlib.Internal as ZI
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import qualified Codec.Compression.Zlib as Z
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import qualified Data.List as L
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import qualified Data.Set as Set
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import Data.Binary
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import Data.Binary.Put
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import Data.Bits
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import Control.Arrow
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import Data.Maybe
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import qualified Data.Either as Ei
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decompressWithoutExceptions :: BL.ByteString -> BL.ByteString
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decompressWithoutExceptions = BL.fromChunks . ZI.foldDecompressStreamWithInput chunk end err decomp
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    where
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        decomp = ZI.decompressST ZI.zlibFormat ZI.defaultDecompressParams
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        chunk = (:)
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        end _ = []
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        err = const $ [BW.empty]
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data HedgehogInfo =
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    HedgehogInfo B.ByteString B.ByteString
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    deriving (Show, Read)
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data TeamInfo =
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    TeamInfo
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    {
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        teamowner :: !B.ByteString,
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        teamname :: !B.ByteString,
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        teamcolor :: !B.ByteString,
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        teamgrave :: !B.ByteString,
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        teamfort :: !B.ByteString,
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        teamvoicepack :: !B.ByteString,
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        teamflag :: !B.ByteString,
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        isOwnerRegistered :: !Bool,
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        difficulty :: !Int,
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        hhnum :: !Int,
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        hedgehogs :: ![HedgehogInfo]
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    }
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    deriving (Show, Read)
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readInt_ :: (Num a) => B.ByteString -> a
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readInt_ str =
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  case B.readInt str of
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       Just (i, t) | B.null t -> fromIntegral i
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       _                      -> 0
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toEngineMsg :: B.ByteString -> B.ByteString
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toEngineMsg msg = fromIntegral (BW.length msg) `BW.cons` msg
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em :: B.ByteString -> B.ByteString
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em = toEngineMsg
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eml :: [B.ByteString] -> B.ByteString
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eml = em . B.concat       
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showB :: (Show a) => a -> B.ByteString
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showB = B.pack . show
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replayToDemo :: [TeamInfo]
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        -> Map.Map B.ByteString B.ByteString
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        -> Map.Map B.ByteString [B.ByteString]
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        -> [B.ByteString]
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        -> B.ByteString
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replayToDemo ti mParams prms msgs = if not sane then "" else (B.concat $ concat [
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        [em "TD"]
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        , maybeScript
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        , maybeMap
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        , [eml ["etheme ", head $ prms Map.! "THEME"]]
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        , [eml ["eseed ", mParams Map.! "SEED"]]
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        , [eml ["e$gmflags ", showB gameFlags]]
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        , schemeFlags
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        , schemeAdditional
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        , [eml ["e$template_filter ", mParams Map.! "TEMPLATE"]]
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        , [eml ["e$feature_size ", mParams Map.! "FEATURE_SIZE"]]
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        , [eml ["e$mapgen ", mapgen]]
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        , mapgenSpecific
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        , concatMap teamSetup ti
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        , map (Ei.fromRight "" . Base64.decode) $ reverse msgs
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        , [em "!"]
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        ])
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    where
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        keys1, keys2 :: Set.Set B.ByteString
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        keys1 = Set.fromList ["FEATURE_SIZE", "MAP", "MAPGEN", "MAZE_SIZE", "SEED", "TEMPLATE"]
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        keys2 = Set.fromList ["AMMO", "SCHEME", "SCRIPT", "THEME"]
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        sane = Set.null (keys1 Set.\\ Map.keysSet mParams)
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            && Set.null (keys2 Set.\\ Map.keysSet prms)
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            && (not . null . drop 41 $ scheme)
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            && (not . null . tail $ prms Map.! "AMMO")
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            && ((B.length . head . tail $ prms Map.! "AMMO") > 200)
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        mapGenTypes = ["+rnd+", "+maze+", "+drawn+", "+perlin+"]
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        scriptName = head . fromMaybe ["Normal"] $ Map.lookup "SCRIPT" prms
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        maybeScript = let s = scriptName in if s == "Normal" then [] else [eml ["escript Scripts/Multiplayer/", spaces2Underlining s, ".lua"]]
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        maybeMap = let m = mParams Map.! "MAP" in if m `elem` mapGenTypes then [] else [eml ["emap ", m]]
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        scheme = tail $ prms Map.! "SCHEME"
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        mapgen = mParams Map.! "MAPGEN"
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        mazeSizeMsg = eml ["e$maze_size ", mParams Map.! "MAZE_SIZE"]
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        mapgenSpecific = case mapgen of
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            "1" -> [mazeSizeMsg]
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            "2" -> [mazeSizeMsg]
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            "3" -> let d = head . fromMaybe [""] $ Map.lookup "DRAWNMAP" prms in if BW.length d <= 4 then [] else drawnMapData d
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            _ -> []
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        gameFlags :: Word32
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        gameFlags = foldl (\r (b, f) -> if b == "false" then r else r .|. f) 0 $ zip scheme gameFlagConsts
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        schemeFlags = map (\(v, (n, m)) -> eml [n, " ", showB $ (readInt_ v) * m])
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            $ filter (\(_, (n, _)) -> not $ B.null n)
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            $ zip (drop (length gameFlagConsts) scheme) schemeParams
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        schemeAdditional = let scriptParam = B.tail $ scheme !! 42 in [eml ["e$scriptparam ", scriptParam] | not $ B.null scriptParam]
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        ammoStr :: B.ByteString
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        ammoStr = head . tail $ prms Map.! "AMMO"
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        ammo = let l = B.length ammoStr `div` 4; ((a, b), (c, d)) = (B.splitAt l . fst &&& B.splitAt l . snd) . B.splitAt (l * 2) $ ammoStr in
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                   (map (\(x, y) -> eml [x, " ", y]) $ zip ["eammloadt", "eammprob", "eammdelay", "eammreinf"] [a, b, c, d])
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                   ++ [em "eammstore" | scheme !! 14 == "true" || scheme !! 20 == "false"]
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        initHealth = scheme !! 27
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        teamSetup :: TeamInfo -> [B.ByteString]
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        teamSetup t = (++) ammo $
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                eml ["eaddteam <hash> ", showB $ (1 + (readInt_ $ teamcolor t) :: Int) * 2113696, " ", teamname t]
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                : em "erdriven"
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                : eml ["efort ", teamfort t]
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                : take (2 * hhnum t) (
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                    concatMap (\(HedgehogInfo hname hhat) -> [
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                            eml ["eaddhh ", showB $ difficulty t, " ", initHealth, " ", hname]
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                            , eml ["ehat ", hhat]
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                            ])
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                        $ hedgehogs t
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                        )
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        infRopes = ammoStr `B.index` 7  == '9'
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        vamp = gameFlags .&. 0x00000200 /= 0
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        infattacks = gameFlags .&. 0x00100000 /= 0
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        spaces2Underlining = B.map (\c -> if c == ' ' then '_' else c)
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drawnMapData :: B.ByteString -> [B.ByteString]
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drawnMapData =
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          L.map (\m -> eml ["edraw ", BW.pack m])
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        . L.unfoldr by200
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        . BL.unpack
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        . unpackDrawnMap
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    where
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        by200 :: [a] -> Maybe ([a], [a])
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        by200 [] = Nothing
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        by200 m = Just $ L.splitAt 200 m
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unpackDrawnMap :: B.ByteString -> BL.ByteString
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unpackDrawnMap = either
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        (const BL.empty) 
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        (decompressWithoutExceptions . BL.pack . drop 4 . BW.unpack)
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        . Base64.decode
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compressWithLength :: BL.ByteString -> BL.ByteString
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compressWithLength b = BL.drop 8 . encode . runPut $ do
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    put $ ((fromIntegral $ BL.length b)::Word32)
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    mapM_ putWord8 $ BW.unpack $ BL.toStrict $ Z.compress b
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packDrawnMap :: BL.ByteString -> B.ByteString
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packDrawnMap =
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      Base64.encode
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    . BL.toStrict
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    . compressWithLength
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prependGhostPoints :: [(Int16, Int16)] -> B.ByteString -> B.ByteString
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prependGhostPoints pts dm = packDrawnMap $ (runPut $ forM_ pts $ \(x, y) -> put x >> put y >> putWord8 99) `BL.append` unpackDrawnMap dm
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schemeParams :: [(B.ByteString, Int)]
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schemeParams = [
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      ("e$damagepct", 1)
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    , ("e$turntime", 1000)
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    , ("", 0)
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    , ("e$sd_turns", 1)
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    , ("e$casefreq", 1)
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    , ("e$minestime", 1000)
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    , ("e$minesnum", 1)
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    , ("e$minedudpct", 1)
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    , ("e$explosives", 1)
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    , ("e$airmines", 1)
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    , ("e$healthprob", 1)
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    , ("e$hcaseamount", 1)
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    , ("e$waterrise", 1)
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    , ("e$healthdec", 1)
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    , ("e$ropepct", 1)
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    , ("e$getawaytime", 1)
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    , ("e$worldedge", 1)
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    ]
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gameFlagConsts :: [Word32]
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gameFlagConsts = [
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          0x00001000
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        , 0x00000010
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        , 0x00000004
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        , 0x00000008
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        , 0x00000020
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        , 0x00000040
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        , 0x00000080
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        , 0x00000100
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        , 0x00000200
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        , 0x00000400
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        , 0x00000800
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        , 0x00002000
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        , 0x00004000
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        , 0x00008000
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        , 0x00010000
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        , 0x00020000
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        , 0x00040000
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        , 0x00080000
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        , 0x00100000
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        , 0x00200000
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        , 0x00400000
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        , 0x00800000
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        , 0x01000000
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        , 0x02000000
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        , 0x04000000
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        ]    
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loadReplay :: String -> IO (Maybe ([TeamInfo], [(B.ByteString, B.ByteString)], [(B.ByteString, [B.ByteString])], [B.ByteString]))
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loadReplay fileName = E.handle (\(e :: SomeException) -> return Nothing) $ do
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            liftM (Just . read) $ readFile fileName
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convert :: String -> IO ()
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convert fileName = do
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    Just (t, c1, c2, m) <- loadReplay fileName
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    B.writeFile (fileName ++ ".hwd") $ replayToDemo t (Map.fromList c1) (Map.fromList c2) m
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main = do
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    args <- getArgs
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    when (length args == 1) $ (convert (head args))