'This is called once, the very first time the player is created
(i.e. first time they register with the game). It\'s a good
place to store attributes all players should have, like
configuration values etc.'

def at_player_creation(self):

    lockstring = 'attrread:perm(Admins);attredit:perm(Admins);attrcreate:perm(Admins)'
    self.attributes.add('_playable_characters', [], lockstring=lockstring)
    self.attributes.add('_saved_protocol_flags', {}, lockstring=lockstring)
