Missing grid nodes on A* barrier overlap

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EK asked Oct 13, '23 Felix Möhlmann answered Oct 13, '23

Missing grid nodes on A* barrier overlap

Missing grid node on Astar barrier overlap.fsm

I am trying to follow the kiva tutorial on setting up travel direction using A* barriers for loaded TE (https://www.youtube.com/watch?v=3AQ-cjOS9tY). My TE gets stuck on the overlapping barrier node which seems to be missing. I have checked that the barriers are on the same level (z=0)

Software Version:

FlexSim 23.2.1

astar barrier

1697182302408.png (36.8 KiB)

missing-grid-node-on-astar-barrier-overlap.fsm (145.3 KiB)

Answer 1 · 2023-10-13T07:51:00Z

Felix Möhlmann answered Oct 13, '23

Your barriers only allow travel in a single direction. At the crossover points both restrictions apply, leaving no possible travel direction.

In the video you linked, the barriers allow travel in three directions (see around 31:30); the main direction and perpendicular to it. The perpendicular directions are not used because they are either blocked by the storage itself or because they would result in a longer path.

At the crossings, this still leaves two possible travel directions.

1697183414565.png (20.4 KiB)

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