Agents stop working after 20 minutes

[laurentopia]

tracing


perform not called
seems that in certain conditions the agent unlocks smart object but doesn't release current interaction, the odd aspect of this is that it takes a while before breaking and since OnInteractionFinished is passed as callback and that never breaks in my experience it is weird™

[laurentopia]

and in the case of the other agent

so nothing gets done, it seems, but that's not it, i think this value gets set to performer when it's reached destination so this could be (yet another) unity navmesh related bug.

[laurentopia]

And when adding more agents the problems takes less time to show itself.

[IainMcManus]

Cheers for the detailed rundown, I'll try and look into it this weekend.

[IainMcManus]

@laurentopia sorry for how long this took. I've submitted what I think should fix the issue. With this change I've had 5 AIs run for over an hour without stalling. I think there's an issue with the Unity Navmesh agent where after a time of trying to avoid another AI it stalls out and clears the path info. I'll keep the issue open for now as I'd like to dig more into what's happening on the avoidance side and see if I can implement a fix for the underlying issue.

[laurentopia]

Fantastic, thanks for spending time investigating, I'll look at the change. Even with other pathers you run into stall, sometimes. It might be a good failsafe to add a timeout that calls FindNewBestTask() when stall is detected?

[laurentopia]

I recommend this instead of .y=0, decoupling the AI from game geometry constraints.

[IainMcManus]

I switched it over to a similar approach that checks the height delta and the horizontal.

else if (LinkedAgent.hasPath == false)
{
Vector3 vecToDestination = Destination - transform.position;
float heightDelta = Mathf.Abs(vecToDestination.y);
vecToDestination.y = 0f;

atDestination = heightDelta < LinkedAgent.height && vecToDestination.magnitude <= DestinationReachedThreshold;

}

[laurentopia]

That'll only work if the plane of action is perpendicular to y.

[IainMcManus]

Yep, that's intentional. I do want to eventually support handling any surface orientation for the AIs but I want to do that in a single commit for clarity.

[laurentopia]

That makes sense, I'll keep an eye out for when you do that.