/// <summary>
/// Compares two POIs according to some pre-defined metrics
/// </summary>
private int ComparePointOfInterest(PointOfInterest poiA, PointOfInterest poiB)
{
// High alert POIs take priority
bool highAlertA = IsPoiAtHighAlert(poiA);
bool highAlertB = IsPoiAtHighAlert(poiB);
int alertComparison = highAlertA.CompareTo(highAlertB);
if (alertComparison != 0) return alertComparison;
// Compare POI types
if (poiA.POIType >= PointOfInterestType.UnknownEntity && poiB.POIType >= PointOfInterestType.UnknownEntity)
{
int poiTypeComparison = poiA.POIType.CompareTo(poiB.POIType);
if (poiTypeComparison != 0)
return poiTypeComparison;
}
// If we get here, POI Type is equal or POI is considered a mostly irrelevant point
// If both POIs are grids, return the largest grid size
if (poiA.IsGrid() && poiB.IsGrid())
{
MyCubeBlock blockA = poiA.Entity as MyCubeBlock;
MyCubeBlock blockB = poiB.Entity as MyCubeBlock;
if (blockA != null && blockB != null)
{
int gridSizeComparison = blockA.CubeGrid.BlocksCount.CompareTo(blockB.CubeGrid.BlocksCount);
if (gridSizeComparison != 0)
return gridSizeComparison;
}
}
// Closer by is more important than further away
return poiB.Distance.CompareTo(poiA.Distance);
}