Nodes traversal rules for grid tiles

[Yonaba]

We can have, for grid maps, tiles than can only be crossed in specific directions. For instance, it can only be entered north, south, etc.

• The first approach is to define, for specific nodes, the edges that cannot be taken to enter/leave the node itself. Internally, while expanding the search, the pathfinder will consider this information to properly retrieve the nodes to be examined next.
• The second approach, bitmasks. I already investigated it, but not in-depth. The results were not satisfactory at all, but I would probably reconsider it if the previous does not work.