class Wall:
    character = '─'
    color = 'blue'
    passable = False

    @classmethod
    def horzline(cls, origin, length):
        agents = []
        x, y = origin
        for dx in range(length):
            wall = cls((x + dx, y))
            agents.append(wall)
        return agents

    def __init__(self, position):
        self.position = position