public void Update()
{
healthBarFill.Width = (int)(healthBar.Width * ((float)player.GetHealth() / player.GetMaxHealth()));
manaBarFill.Width = (int)(manaBar.Width * ((float)player.GetMana() / player.GetMaxMana()));
xpBarFill.Width = (int)(xpBar.Width * ((float)player.GetXp() / player.GetXpToLevel()));
}