members:
	int health
	int manna
	bool fireElementSelected
	bool waterElementSelected
	bool earthElementSelected
	bool windElementSelected
	
	enum ShieldType { EARTH_SHIELD, FIRE_SHIELD, WATER_SHIELD, WIND_SHIELD, NO_SHIELD } 
	ShieldType activeShield
functions:
	public Player()
	public void IncrementManna()
	public void SetShield(ShieldType shield)
	public virtual void Update()