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{-# LANGUAGE GeneralizedNewtypeDeriving #-}

module Game ( Tank(..)
            , Shoot(..)
            , GameState(..)
            , Game
            , runGame
            ) where

import Level
import Texture

import Control.Monad
import Control.Monad.State
import Data.Fixed
import qualified Data.Map as M


data Tank = Tank
          { tankX            :: !Micro
          , tankY            :: !Micro
          , tankDir          :: !Micro
          , tankAim          :: !Micro
          , tankSpeed        :: !Micro
          , tankTurnspeed    :: !Micro
          , tankMoving       :: !Bool
          , tankShootSpeed   :: !Micro
          , tankShootBounces :: !Int
          , tankShootsLeft   :: !Int
          } deriving Show

data Shoot = Shoot
    { shootX      :: !Micro
    , shootY      :: !Micro
    , shootDir    :: !Micro
    , shootSpeed  :: !Micro
    , shootBouncesLeft :: !Int
    , shootTank   :: !Int
    } deriving Show

data GameState = GameState
    { level    :: !Level
    , tanks    :: ![Tank]
    , shoots   :: ![Shoot]
    , textures :: !(M.Map Texture TextureObject)
    } 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