Tracker Tutorial: Tick

Tracker.cpp

void ATracker::Tick(float DeltaTime)
{
	Super::Tick(DeltaTime);
	// Find Tracker if trackerID is -1 else update tracker
	if (trackerID == -1)
	{
		// Loop through tracker ids skipping the first one because that is our null HMD.
		for (uint32_t i = 1; i <= 8; i++) {
			vr::HmdMatrix34_t posMat = UpdateTracker(i);
			// Verify the postion of the tracker isn't vector zero. 
			if (posMat.m[0][3] != 0 && posMat.m[1][3] != 0 && posMat.m[2][3] != 0)
			{
				trackerID = i;
				break;
			}
		}
	}
	else
	{
		UpdateTracker(trackerID);
	}
}