Knowing that an AI reached the end of its path?

anonymous_user_b7c8cba0 · October 16, 2014, 1:57am

Is there any form of interrupt system that UE4 utilizes when an AI “reaches” its path finding goal?

I’d prefer to just create a listener thread, than have one thread go through a few thousand AIs checking to see if they’ve reached their goals by doing capsule intersection tests.

anonymous_user_34ab444a1 · October 18, 2014, 3:55am

Blueprints add themselves as a multicast observer via ReceiveMoveCompleted via AIController

MyObj->AIController->ReceiveMoveCompleted.AddDynamic(MyObj, &UAIAsyncTaskBlueprintProxy::OnMoveCompleted);

AIController hooks directly into the PathFollowingComponent

PathFollowingComponent->OnMoveFinished.AddUObject(this, &AAIController::OnMoveCompleted);

You could override AIController’s OnMoveCompleted or get a reference to the path and register as a listener that way. They both provide EPathFollowingResult for success or failure.