Running Zone Graph without State Tree

Development Programming & Scripting C++
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1

Hello, I’ve been looking into running zone graph calls without using state tree. Is there documentation for doing so out there? I haven’t found a great deal. From what I’ve gathered, I’m able to do most nav items, except I have yet to figure out DistanceAlongLanecalculations.

I can force stop along paths, replan, send them to a new destination all in C++ & processors, etc. But I’m missing where this is DistanceAlongLane is calculated, resulting in them ping ponging on the same traversal zone paths instead of ‘continuing forward’.

Thanks

2

Looks like its getting overridden here:

const FMassZoneGraphPathPoint& CurrPoint = ShortPath.Points[PointIndex];
const FMassZoneGraphPathPoint& NextPoint = ShortPath.Points[PointIndex + 1];
const float T = (ShortPath.ProgressDistance - CurrPoint.Distance.Get()) / (NextPoint.Distance.Get() - CurrPoint.Distance.Get());

LaneLocation.DistanceAlongLane = FMath::Min(FMath::Lerp(CurrPoint.DistanceAlongLane.Get(), NextPoint.DistanceAlongLane.Get(), T), LaneLocation.LaneLength);

That LaneLocation.LaneLength is 0, debugging further.

3

And in this case I was the error, I had LaneLength set to 0 on another processor, overriding the value that was already set.

Nothing to see here :).