void FixedUpdate()
    {
        if (alive && ruleManager.GameRunning())
        {
            if (virtualJoystick.x < 0)
            {
                facing_left = true;
            }
            else if (virtualJoystick.x > 0)
            {
                facing_left = false;
            }
            addForce(virtualJoystick.x, virtualJoystick.y);
        }
        addForce(virtualJoystick.x, virtualJoystick.y);

        if (horizontal != 0 && vertical != 0)   // Check for diagonal movement
        // limit movement speed diagonally, so you move at 70% speed
        {
            horizontal *= moveLimiter;
            vertical   *= moveLimiter;
        }
        this.addForce(horizontal, vertical);
    }