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polyfrag

A* laggy

4 posts in this topic

I have an RTS with 50-128 workers that automatically start moving when you start a building construction. It works fine but then gets laggy as the units bump into each other and have to reroute. As they get closer to the building gets blocked off with no possible path to it. And I disable pathfinding after they're stuck with no way to the building.

But I must be doing something wrong because it's laggy.

I tried doing pathfinding in a separate thread but it crashes.

Any ideas?
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Do all the workers have to work on the building? Do you have to do a repath in A* when they bump into each other? If this isn't grid-based, is local steering an option?

You haven't told us enough about your situation for us to help.
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Probably the paper below covers what you want:
[url="http://www.cs.ucl.ac.uk/staff/D.Silver/web/.../coop-path-AIWisdom.pdf"]http://www.cs.ucl.ac.uk/staff/D.Silver/web/.../coop-path-AIWisdom.pdf[/url]

Essentially search from the shared destination back to the individual workers, and book time slices so workers co-operatively avoid each other. Hope that helps!
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