Returns whether the specified character can attack the specified other character. This includes all of the checks the MUD performs when a mob tries to attack another: the attacker is awake, in its default position, not hunting, and not also the target; the attacker can see the target; and the target is alive, is not in a safe zone, is not petrified, and it not immune to aggros. Note that the potential victim does not have to be in the same room as the attacker.