Hi
You can do something similar in this package.
Either you can use a texture like in that video, or you can use a more automatic approach:
- Set grid graph => erosion iterations to something like 5.
- Enable ‘erosion uses tags’ and set the start tag to Tag 1.
This will mark the nodes right next to the wall with Tag 1, the ones 1 unit away from the wall with Tag 2, the ones 2 units away from the wall with Tag 3, and so on (up to 5 units away).
Then you can modify your Seeker -> Tags settings to add a penalty for moving close to walls.
(you may have to use higher or lower penalty values depending on the scale of your scene. 1000 is roughly the cost of moving 1 world unit).
Without penalties
With penalties