from settings import block_size, screen_width, directions


class Node:
    def __init__(self, state, parent=None, action=None):
        self.state = state
        self.parent = parent
        self.action = action

class BFS:
    def __init__(self):
        self.fringe = [] 
        self.explored = [] 
    
    def successor(self, state):
        pass
        
    def search(self):
        pass