class State:
    def __init__(self, parent, action, xpos, ypos, orientation, priority, heuristic):
        self.parent = parent
        self.xpos = xpos
        self.ypos = ypos
        self.orientation = orientation
        self.action = action
        self.priority = priority
        self.heuristic = heuristic
    def __gt__(self, other):
        return self.priority > other.priority