private void SubscribeToPlanetoidDataValueChanges(PlanetoidData pData) {
if (!_planetoidSubscriptions.ContainsKey(pData)) {
_planetoidSubscriptions.Add(pData, new List<IDisposable>());
}
var planetSubscriber = _planetoidSubscriptions[pData];
planetSubscriber.Add(pData.SubscribeToPropertyChanged<PlanetoidData, int>(pd => pd.Capacity, PlanetoidCapacityPropChangedHandler));
planetSubscriber.Add(pData.SubscribeToPropertyChanged<PlanetoidData, ResourceYield>(pd => pd.Resources, PlanetoidResourceYieldPropChangedHandler));
pData.intelCoverageChanged += PlanetoidIntelCoverageChangedEventHandler;
}
