private Coordinates?GetLandCoordinates(
SpawnPointType[] validTypes,
Coordinates distanceOrigin1, MinMaxD distanceFrom1,
Coordinates?distanceOrigin2 = null, MinMaxD?distanceFrom2 = null,
Coalition?coalition = null
)
{
var validSP = (from DBEntryTheaterSpawnPoint pt in SpawnPoints where validTypes.Contains(pt.PointType) select pt);
Coordinates?[] distanceOrigin = new Coordinates?[] { distanceOrigin1, distanceOrigin2 };
MinMaxD?[] distanceFrom = new MinMaxD?[] { distanceFrom1, distanceFrom2 };
for (int i = 0; i < 2; i++) // Remove spawn points too far or too close from distanceOrigin1 and distanceOrigin2
{
if (validSP.Count() == 0)
{
return(null);
}
if (!distanceFrom[i].HasValue || !distanceOrigin[i].HasValue)
{
continue;
}
var searchRange = distanceFrom[i].Value * Toolbox.NM_TO_METERS; // convert distance to meters
IEnumerable <DBEntryTheaterSpawnPoint> validSPInRange = (from DBEntryTheaterSpawnPoint s in validSP select s);
int iterationsLeft = MAX_RADIUS_SEARCH_ITERATIONS;
do
{
Coordinates origin = distanceOrigin[i].Value;
validSPInRange = (from DBEntryTheaterSpawnPoint s in validSP
where
searchRange.Contains(origin.GetDistanceFrom(s.Coordinates)) &&
CheckNotInHostileCoords(s.Coordinates, coalition)
select s);
searchRange = new MinMaxD(searchRange.Min * 0.9, Math.Max(100, searchRange.Max * 1.1));
validSP = (from DBEntryTheaterSpawnPoint s in validSPInRange select s);
iterationsLeft--;
} while ((validSPInRange.Count() == 0) && (iterationsLeft > 0));
}
if (validSP.Count() == 0)
{
return(null);
}
DBEntryTheaterSpawnPoint selectedSpawnPoint = Toolbox.RandomFrom(validSP.ToArray());
SpawnPoints.Remove(selectedSpawnPoint); // Remove spawn point so it won't be used again
return(selectedSpawnPoint.Coordinates);
}
/// <summary>
/// Gets a random spawn point around a given point.
/// </summary>
/// <param name="validTypes">Valid spawn point types</param>
/// <param name="distanceOrigin1">Origin point distance must be computed from</param>
/// <param name="distanceFrom1">Min/max distance from origin point, in nautical miles</param>
/// <param name="distanceOrigin2">Second origin point distance must be computed from</param>
/// <param name="distanceFrom2">Min/max distance from second origin point, in nautical miles</param>
/// <param name="coalition">Which coalition should the spawn point belong to?</param>
/// <returns>A spawn point, or null if none found matching the provided criteria</returns>
public DBEntryTheaterSpawnPoint?GetRandomSpawnPoint(
TheaterLocationSpawnPointType[] validTypes = null,
Coordinates?distanceOrigin1 = null, MinMaxD?distanceFrom1 = null,
Coordinates?distanceOrigin2 = null, MinMaxD?distanceFrom2 = null,
Coalition?coalition = null)
{
// Select all spoint points
IEnumerable <DBEntryTheaterSpawnPoint> validSP = from DBEntryTheaterSpawnPoint pt in SpawnPoints select pt;
if (validTypes != null) // Remove spawn points of invalid types
{
validSP = (from DBEntryTheaterSpawnPoint pt in validSP where validTypes.Contains(pt.PointType) select pt);
}
if (coalition.HasValue) // Select spawn points belonging to the proper coalition
{
IEnumerable <DBEntryTheaterSpawnPoint> coalitionValidSP =
coalitionValidSP = (from DBEntryTheaterSpawnPoint sp in validSP where sp.Coalition == coalition.Value select sp);
// At least one spawn point found, only use SP for the preferred coalition
if (coalitionValidSP.Count() > 0)
{
validSP = coalitionValidSP;
}
}
Coordinates?[] distanceOrigin = new Coordinates?[] { distanceOrigin1, distanceOrigin2 };
MinMaxD?[] distanceFrom = new MinMaxD?[] { distanceFrom1, distanceFrom2 };
for (int i = 0; i < 2; i++) // Remove spawn points too far or too close from distanceOrigin1 and distanceOrigin2
{
if (validSP.Count() == 0)
{
return(null);
}
if (!distanceFrom[i].HasValue || !distanceOrigin[i].HasValue)
{
continue;
}
MinMaxD searchRange = distanceFrom[i].Value * Toolbox.NM_TO_METERS; // convert distance to meters
IEnumerable <DBEntryTheaterSpawnPoint> validSPInRange = (from DBEntryTheaterSpawnPoint s in validSP select s);
int iterationsLeft = MAX_RADIUS_SEARCH_ITERATIONS;
do
{
Coordinates origin = distanceOrigin[i].Value;
validSPInRange = (from DBEntryTheaterSpawnPoint s in validSP
where searchRange.Contains(origin.GetDistanceFrom(s.Coordinates))
select s);
searchRange = new MinMaxD(searchRange.Min * 0.9, Math.Max(100, searchRange.Max * 1.1));
iterationsLeft--;
} while ((validSPInRange.Count() == 0) && (iterationsLeft > 0));
validSP = (from DBEntryTheaterSpawnPoint s in validSPInRange select s);
}
if (validSP.Count() == 0)
{
return(null);
}
DBEntryTheaterSpawnPoint selectedSpawnPoint = Toolbox.RandomFrom(validSP.ToArray());
SpawnPoints.Remove(selectedSpawnPoint); // Remove spawn point so it won't be used again
return(selectedSpawnPoint);
}