35 lines
1.2 KiB
Haskell
35 lines
1.2 KiB
Haskell
{-# LANGUAGE DeriveDataTypeable, PatternGuards #-}
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module DefaultPlayer ( DefaultPlayer(..)
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) where
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import qualified Data.Set as S
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import Data.Fixed
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import Data.Ratio ((%))
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import Data.Typeable
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import GLDriver
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import Player
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import Tank
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data DefaultPlayer = DefaultPlayer (S.Set Key)
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deriving (Typeable, Show)
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instance Player DefaultPlayer where
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playerMovement (DefaultPlayer keys) _ = playerMovement' keys
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handleEvent (DefaultPlayer keys) ev
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| Just (KeyPressEvent key) <- fromEvent ev = DefaultPlayer $ S.insert key keys
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| Just (KeyReleaseEvent key) <- fromEvent ev = DefaultPlayer $ S.delete key keys
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| otherwise = DefaultPlayer keys
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playerMovement' :: S.Set Key -> (DefaultPlayer, Maybe Micro, Bool)
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playerMovement' keys = (DefaultPlayer keys, angle, move)
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where
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x = (if (S.member KeyLeft keys) then (-1) else 0) + (if (S.member KeyRight keys) then 1 else 0)
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y = (if (S.member KeyDown keys) then (-1) else 0) + (if (S.member KeyUp keys) then 1 else 0)
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move = (x /= 0 || y /= 0)
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angle = if move then Just $ fromRational $ round ((atan2 y x)*1000000*180/pi)%1000000 else Nothing
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