first eval commit
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Stefan Bühler
commit
bb6957abc0
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Eval.hs
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Eval.hs
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module Eval where
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import Control.Monad
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import Control.Monad.IO.Class
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import qualified Data.Array.IO as A
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import System.IO.Unsafe
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type Field = (Value, Int)
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type Fields = A.IOArray Int Field
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data Player = Player { fields :: Fields } deriving (Show, Eq)
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data Game = Game { proponent, opponent :: Player, applications :: Int, automode :: Bool, gameturn :: Integer } deriving (Show, Eq)
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data Turn x = Turn { runTurn' :: Game -> IO (Game, Either String x) }
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data Value = ValInt !Int | ValFunction String (Value -> Turn Value)
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vitality :: Int -> Int
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vitality x = if (x < 0) then 0 else if (x > 65535) then 65535 else x
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int :: Int -> Value
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int x = ValInt $ vitality x
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data Card = Card_I | Card_Zero | Card_Succ | Card_Dbl | Card_Get | Card_Put | Card_S | Card_K | Card_Inc | Card_Dec | Card_Attack | Card_Help | Card_Copy | Card_Revive | Card_Zombie
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data Move = MoveLeft Card Int | MoveRight Int Card
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instance Monad Turn where
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(Turn f) >>= g = Turn $ \game -> (f game >>=) $ \(game', r) -> case r of Right x -> (case g x of Turn g' -> g' game'); Left s -> return (game', Left s)
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return x = Turn $ \game -> return (game, Right x)
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fail s = Turn $ \game -> return (game, Left s)
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instance MonadIO Turn where
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liftIO f = Turn $ \game -> f >>= \x -> return (game, Right x)
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apply :: Int -> Turn ()
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apply n = Turn $ \game -> let a = n + (applications game) in let g = game { applications = a } in if a > 1000 then return (g, Left "Application limit exceeded") else return (g, Right ())
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reset :: Turn ()
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reset = Turn $ \game -> return (game {applications = 0}, Right ())
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try :: Turn x -> (String -> Turn y) -> Turn ()
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try (Turn action) catch = Turn $ \game -> (action game >>=) $ \(game', r) -> case r of Right _ -> return (game', Right ()); Left s -> case catch s of Turn catch' -> catch' game' >>= (\(game'', r) -> case r of Right _ -> return (game'', Right ()); Left s -> return (game'', Left s))
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instance Show Value where
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show (ValInt i) = show i
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show (ValFunction name _) = name
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instance Show Fields where
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show f = unsafePerformIO $ do
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assocs <- A.getAssocs f
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return $ show $ filter (\(_, (val, vit)) -> vit /= 10000 || (show val /= "I")) assocs
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take1 :: String -> (Value -> Turn Value) -> Value
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take1 name f = ValFunction name $ \v -> apply 1 >> f v
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take2 :: String -> (Value -> Value -> Turn Value) -> Value
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take2 name f = ValFunction name $ \v -> apply 1 >> return (take1 (name ++ " (" ++ show v ++ ")") (f v))
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take3 :: String -> (Value -> Value -> Value -> Turn Value) -> Value
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take3 name f = ValFunction name $ \v -> apply 1 >> return (take2 (name ++ " (" ++ show v ++ ")") (f v))
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getInt :: Value -> Turn Int
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getInt v = case v of ValInt x -> return x; _ -> fail "Expected Integer, got Function"
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getSlotNo :: Value -> Turn Int
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getSlotNo = getInt >=> \slot -> if (slot >= 0 && slot <= 255) then return slot else fail ("Invalid slot index " ++ (show slot))
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getFunc :: Value -> Turn (Value -> Turn Value)
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getFunc v = case v of ValFunction _ x -> return x; _ -> fail "Expected Function, got Integer"
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tryApply :: Value -> Value -> Turn Value
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tryApply f v = case f of ValFunction _ f' -> f' v; _ -> fail "Expected Function, got Integer"
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readSlot :: (Game -> Player) -> Int -> Turn (Int, Field)
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readSlot player n = Turn $ \game -> A.readArray (fields $ player game) n >>= \field -> return (game, Right (n, field))
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writeSlot :: (Game -> Player) -> Int -> Field -> Turn ()
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writeSlot player n field = Turn $ \game -> A.writeArray (fields $ player game) n field >> return (game, Right ())
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writeValue :: (Game -> Player) -> Int -> Value -> Turn ()
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writeValue player n val = readSlot player n >>= \(_, (_, vit)) -> writeSlot player n (val, vit)
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getSlot :: (Game -> Player) -> Value -> Turn (Int, Field)
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getSlot player = getSlotNo >=> readSlot player
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getAliveSlot :: (Game -> Player) -> Value -> Turn (Int, Field)
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getAliveSlot player = getSlot player >=> \r@(slot, (_, vit)) -> if (vit > 0) then return r else fail ("Slot " ++ (show slot) ++ " not alive")
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autoSwitch :: Turn () -> Turn () -> Turn Value
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autoSwitch (Turn norm) (Turn aut) = (Turn $ \game -> if (automode game) then aut game else norm game) >> return (card Card_I)
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healSlot :: (Game -> Player) -> Int -> Int -> Turn ()
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healSlot player amount slot = do
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(_, (val, vit)) <- readSlot player slot
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when (vit > 0) (writeSlot player slot (val, vitality $ vit + amount))
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pierceSlot :: (Game -> Player) -> Int -> Int -> Turn ()
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pierceSlot player amount slot = do
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(_, (val, vit)) <- readSlot player slot
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when (vit > 0) (writeSlot player slot (val, vitality $ vit - amount))
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reviveSlot :: (Game -> Player) -> Int -> Turn ()
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reviveSlot player slot = do
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(_, (val, vit)) <- readSlot player slot
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when (vit <= 0) (writeSlot player slot (val, 1))
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card :: Card -> Value
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card Card_I = take1 "I" $ return
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card Card_Zero = ValInt 0
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card Card_Succ = take1 "Succ" $ getInt >=> return . int . (+1)
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card Card_Dbl = take1 "Dbl" $ getInt >=> return . int . (*2)
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card Card_Get = take1 "Get" $ getAliveSlot proponent >=> \(_, (val, _)) -> return val
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card Card_Put = take1 "Put" $ const $ return $ card Card_I
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card Card_S = take3 "S" $ \f g x -> do
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h <- tryApply f x
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y <- tryApply g x
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tryApply h y
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card Card_K = take2 "K" $ \x _ -> return x
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card Card_Inc = take1 "Inc" $ getSlotNo >=> \slot -> autoSwitch (healSlot proponent 1 slot) (pierceSlot proponent 1 slot)
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card Card_Dec = take1 "Dec" $ getSlotNo >=> \slot -> autoSwitch (pierceSlot opponent 1 (255-slot)) (healSlot opponent 1 (255-slot))
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card Card_Attack = take3 "Attack" $ \i j n -> do
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i <- getSlotNo i
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n <- getInt n
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autoSwitch (do
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(_, (_, vit)) <- readSlot proponent i
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when (vit < n) $ fail "Attack: not enough vitality"
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pierceSlot proponent n i
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j <- getSlotNo j
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pierceSlot opponent ((n*9) `div` 10) (255-j)
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) (do
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(_, (_, vit)) <- readSlot proponent i
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when (vit < n) $ fail "Attack: not enough vitality"
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pierceSlot proponent n i
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j <- getSlotNo j
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healSlot opponent ((n*9) `div` 10) (255-j)
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)
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card Card_Help = take3 "Help" $ \i j n -> do
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i <- getSlotNo i
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n <- getInt n
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autoSwitch (do
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(_, (_, vit)) <- readSlot proponent i
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when (vit < n) $ fail "Help: not enough vitality"
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pierceSlot proponent n i
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j <- getSlotNo j
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healSlot proponent ((n*11) `div` 10) (255-j)
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) (do
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(_, (_, vit)) <- readSlot proponent i
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when (vit < n) $ fail "Help: not enough vitality"
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pierceSlot proponent n i
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j <- getSlotNo j
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pierceSlot proponent ((n*11) `div` 10) (255-j)
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)
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card Card_Copy = take1 "Copy" $ getSlotNo >=> readSlot opponent >=> \(_, (val, _)) -> return val
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card Card_Revive = take1 "Revive" $ getSlotNo >=> reviveSlot proponent >=> const (return $ card Card_I)
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card Card_Zombie = take2 "Zombie" $ \i x -> do
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i <- getSlotNo i
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(_, (_, vit)) <- readSlot opponent (255-i)
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when (vit > 0) $ fail "Zombie: slot is still alive"
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writeSlot opponent (255-i) (x, -1)
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return $ card Card_I
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runauto :: Turn ()
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runauto = do
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Turn $ \game -> return (game { automode = True }, Right ())
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forM_ [0..255] $ \slot -> do
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(_, (val, vit)) <- readSlot proponent slot
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when (vit == -1) $ do
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try (reset >> tryApply val (card Card_I)) (\s -> liftIO $ putStrLn $ "Error for zombie " ++ (show slot) ++ ": " ++ s)
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writeSlot proponent slot (card Card_I, 0)
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Turn $ \game -> return (game { automode = False }, Right ())
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switchPlayer :: Turn ()
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switchPlayer = Turn $ \game -> return (game { proponent = opponent game, opponent = proponent game, gameturn = 1 + gameturn game }, Right ())
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runMove :: Move -> Turn ()
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runMove m = do
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(l, r, field) <- getmove m
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runauto
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try (reset >> tryApply l r >>= writeValue proponent field) (\s -> liftIO $ putStrLn $ "Error: " ++ s)
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switchPlayer
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where
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getmove :: Move -> Turn (Value, Value, Int)
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getmove (MoveLeft crd field) = do
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(_, (f, _)) <- getAliveSlot proponent (ValInt field)
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return (card crd, f, field)
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getmove (MoveRight field crd) = do
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(_, (f, _)) <- getAliveSlot proponent (ValInt field)
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return (f, card crd, field)
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initFields :: IO Fields
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initFields = A.newArray (0, 255) (card Card_I, 10000)
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initPlayer :: IO Player
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initPlayer = initFields >>= return . Player
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initGame :: IO Game
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initGame = do
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p0 <- initPlayer
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p1 <- initPlayer
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return $ Game p0 p1 0 False 0
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runTurn :: Turn () -> Game -> IO Game
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runTurn turn game = runTurn' turn game >>= \res -> case res of
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(game', Left s) -> (putStrLn $ "Error in turn: " ++ s) >> return game
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(game', Right _) -> return game
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run :: [Move] -> Game -> IO Game
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run moves game = foldM (flip runTurn) game $ map runMove moves
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testMoves :: [Move] -> IO Game
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testMoves moves = initGame >>= run moves
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testMoves1 :: [Move] -> IO Game
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testMoves1 moves = initGame >>= \game -> foldM (\g t -> runTurn (t >> switchPlayer) g) game $ map runMove moves
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