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{-# LANGUAGE GeneralizedNewtypeDeriving #-}
module Game ( GameState(..)
, Game
, runGame
) where
import Level
import Tank
import Control.Monad
import Control.Monad.State
data GameState = GameState
{ level :: !Level
, tanks :: ![Tank]
} deriving (Show)
newtype Game a = Game (StateT GameState IO a)
deriving (Monad, MonadIO, MonadState GameState)
runGame :: GameState -> Game a -> IO (a, GameState)
runGame st (Game a) = runStateT a st
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