class Path():
    def __init__(self):
        self.leader = None
        self.pointlist = [] #a list of points/2-tuple - used for tracking mouse motion.
        self.memberActors = []

    def append(self,point):
        self.pointlist.append(point)
        
    def isEmpty(self):
        if len(self.pointlist) > 2:
            return False
        else:
            return True
        
    def addActor(self, actor):
        if(self.leader==None):
            self.leader = actor
        self.memberActors.append(actor)
        
    def delActor(self, _actor):
        if _actor == self.leader:
            if len(self.memberActors) > 0:
                self.leader = self.memberActors[0]
                for actor in self.memberActors:
                    if actor.pathIndex > self.leader.pathIndex and actor.pathIndex > _actor.pathIndex:
                        self.leader = actor
                        
        for actor in self.memberActors:
            if _actor == actor:
                self.memberActors.remove(actor)

        return
        #print "path::delActor reached end of list..... this may be bad .. I think it probably is.."