27 lines
790 B
Haskell
27 lines
790 B
Haskell
{-# LANGUAGE ExistentialQuantification, DeriveDataTypeable #-}
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module Player ( Player(..)
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, SomePlayer(..)
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) where
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import Data.Fixed
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import Data.Typeable
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import Tank
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import GLDriver (SomeEvent)
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class Player a where
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playerUpdate :: a -> Tank -> IO (a, Maybe Micro, Bool, Maybe Micro, Bool)
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handleEvent :: a -> SomeEvent -> a
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handleEvent player _ = player
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data SomePlayer = forall a. Player a => SomePlayer a
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instance Player SomePlayer where
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playerUpdate (SomePlayer player) tank = do
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(p, angle, move, aangle, shoot) <- playerUpdate player tank
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return (SomePlayer p, angle, move, aangle, shoot)
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handleEvent (SomePlayer player) event = SomePlayer $ handleEvent player event
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