This version of the test environment has been built using a set of tile prefabs – each containing its own search nodes and walls. At this time some manual adjustment of wall placement is still required (deleting many, otherwise moving on a 0.25f grid). Construction of levels should now be much faster, and now allows some automation!
The white spheres represent the grid search node structure (1.0f spacing). The walls have been adjusted to match this levels layout.
I was able to utilize the MavMesh (once baked) to automatically detect any SearchNodes that cannot be reached, and flag them as blocked (black).
The next step will implementing the required search functionality.