private void HandlePlayerInput(GameTime gameTime, InputState input, PlayerIndex playerIndex)
        {
            Ship ship, enemyShip;
            if (playerIndex == ControllingPlayer)
            {
                ship = shipOne;
                enemyShip = shipTwo;
            }
            else
            {
                ship = shipTwo;
                enemyShip = shipOne;
            }

            PlayerIndex dummy;

            #if XBOX360
            if (input.IsButtonPressed(Buttons.A, playerIndex, out dummy) || input.IsKeyPressed(Keys.F, playerIndex, out dummy))
            {
                ship.FireBullet(ScreenManager, enemyShip);
            }

            if (input.IsButtonPressed(Buttons.B, playerIndex, out dummy) || input.IsKeyPressed(Keys.G, playerIndex, out dummy))
            {
                ship.FireMissile(ScreenManager, enemyShip);
            }
            #else

            #endif
        }