Help with using different obstacle layermasks for different seekers

General
1

Hello all,

I’m coding AI for a 2D top-down game and using grid graphs for pathfinding. What I’m trying to do is have different enemies which are programmed to avoid different obstacles.

Specifically I want flying enemies to be able to fly over obstacles but still have to go around walls, and in an ideal circumstance I would be able to change this dynamically (enemies that avoid all obstacles but can be told to ignore certain obstacles under specific circumstances)

As far as I can see in the documentation the A* project does not natively support this feature, and I have absolutely no issue altering code to make this work but I’m having a hard time figuring out where to look.

Another alternative is if there’s a way to pass in my own GridNode list to a seeker when it calculates a path, but once again after digging through the code I’m having a hard time finding where the Path type actually uses the GridNode list to calculate. If anyone could point me in the right direction I would greatly appreciate it!

2

image
hi

you can generate two graphs one for ground one for fly

in the unit seeker

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set it only travel the graphs you wish for

Cheer.

2 Likes
3

In addition to what @eran mentions (see also tutorial here: Multiple agent types - A* Pathfinding Project), you can use an ITraversalProvider (see bottom of Utilities for turn-based games - A* Pathfinding Project), though this is a bit more work.

4

Thank you so much! I knew I was overlooking something obvious but for whatever reason I missed it when I was skimming through the documentation.

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