public void ListenTo(ITrackable activationCatalyst)
{
if (_activationCatalyst != null)
{
throw new System.InvalidOperationException($"World cannot listen to multiple catalysts at a time.");
}
_activationCatalyst = activationCatalyst;
PositionTracker.Subscribe(activationCatalyst, OnPositionUpdate);
var position = PositionTracker.GetCurrentPosition(activationCatalyst);
OnPositionUpdate(activationCatalyst, null, position);
}
