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class Cell(object):
row = None
column = None
links = None
north = None
south = None
east = None
west = None
def __init__(self, row, column):
self.row = row
self.column = column
self.links = {}
def link(self, cell, bidirectional=True):
self.links[cell] = True
if bidirectional:
cell.link(self, bidirectional=False)
def unlink(self, cell, bidirectional=True):
self.links.pop(cell)
if bidirectional:
cell.unlink(cell, bidirectional=False)
def links(self):
return self.links.keys()
def is_linked_to(self, cell):
return cell in self.links
def neighbors(self):
n = []
if self.north:
n.append(self.north)
if self.south:
n.append(self.south)
if self.east:
n.append(self.east)
if self.west:
n.append(self.west)
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