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- class Node(object):
- """
- basic node, saves X and Y coordinates on some grid and determine if
- it is walkable.
- """
- def __init__(self, x=0, y=0, walkable=True, weight=1):
-
- self.x = x
- self.y = y
-
- self.walkable = walkable
-
- self.weight = weight
-
- self.cleanup()
- def __lt__(self, other):
- """
- nodes are sorted by f value (see a_star.py)
- :param other: compare Node
- :return:
- """
- return self.f < other.f
- def cleanup(self):
- """
- reset all calculated values, fresh start for pathfinding
- """
-
- self.h = 0.0
-
- self.g = 0.0
-
- self.f = 0.0
- self.opened = 0
- self.closed = False
-
- self.parent = None
-
- self.retain_count = 0
-
- self.tested = False
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