# Holder for misc useful classes

class Position(object):
    """2D position / vector"""

    def __init__(self, x, y):
        self.x = x
        self.y = y

    def to_tuple(self):
        return self.x, self.y

    def dist(self, b):
        """Gives the distance to another position"""

        return abs(self.x - b.x) + abs(self.y - b.y)

    def __sub__(self, b):
        return Position(self.x - b.x, self.y - b.y)

    def __add__(self, b):
        return Position(self.x + b.x, self.y + b.y)

    def left_of(self, b):
        return self.x < b.x

    def right_of(self, b):
        return self.x > b.x

    def __eq__(self, b):
        return self.x == b.x and self.y == b.y