public bool IsAlive { get => gameObject.activeSelf && Hp > 0; }
public bool IsAlive
{
    get
    {
        return gameObject.activeSelf && Hp > 0;
    }
}
public bool IsAlive
{
    get
    {
        if (gameObject.activeSelf)
            if (Hp > 0)
                return true;
        return false;
    }
}