/// <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);
}
/// <summary>
/// Picks a starting airbase for the player(s)
/// </summary>
/// <param name="mission">Mission for which the starting airbase must be set</param>
/// <param name="template">Mission template to use</param>
/// <param name="theaterDB">Theater database entry</param>
/// <param name="lastCoordinates">Last location for referance</param>
/// <param name="distance">Base Distance Range</param>
/// <param name="first">is first objective</param>
/// <returns>Information about the starting airbase</returns>
public DBEntryTheaterAirbase SelectObjectiveAirbase(DCSMission mission, MissionTemplate template, DBEntryTheater theaterDB, Coordinates lastCoordinates, MinMaxD distance, bool first = false)
{
List <DBEntryTheaterAirbase> airbasesList = new List <DBEntryTheaterAirbase>();
// Select all airbases with enough parking spots, trying to match the preferred coalition for enemy unit location, if any
if ((template.OptionsTheaterCountriesCoalitions == CountryCoalition.AllBlue) || (template.OptionsTheaterCountriesCoalitions == CountryCoalition.AllRed) ||
(template.OptionsEnemyUnitsLocation == SpawnPointPreferredCoalition.Any))
{
airbasesList.AddRange((from DBEntryTheaterAirbase ab in theaterDB.Airbases where ab.ParkingSpots.Length >= Toolbox.MAXIMUM_FLIGHT_GROUP_SIZE select ab).ToArray());
}
else
{
Coalition preferredCoalition;
if (template.OptionsEnemyUnitsLocation == SpawnPointPreferredCoalition.Blue)
{
preferredCoalition = (template.OptionsTheaterCountriesCoalitions == CountryCoalition.Inverted) ? Coalition.Red : Coalition.Blue;
}
else
{
preferredCoalition = (template.OptionsTheaterCountriesCoalitions == CountryCoalition.Inverted) ? Coalition.Blue : Coalition.Red;
}
airbasesList.AddRange(
(from DBEntryTheaterAirbase ab in theaterDB.Airbases where ab.ParkingSpots.Length >= Toolbox.MAXIMUM_FLIGHT_GROUP_SIZE && ab.Coalition == preferredCoalition select ab).ToArray());
if (airbasesList.Count == 0)
{
airbasesList.AddRange((from DBEntryTheaterAirbase ab in theaterDB.Airbases where ab.ParkingSpots.Length >= Toolbox.MAXIMUM_FLIGHT_GROUP_SIZE select ab).ToArray());
}
}
// Remove players' home airbase and airbases already used by other objectives from the list of available airbases
List <int> airbasesInUse = (from DCSMissionObjective objective in mission.Objectives select objective.AirbaseID).ToList();
airbasesInUse.Add(mission.InitialAirbaseID);
airbasesList = (from DBEntryTheaterAirbase ab in airbasesList where !airbasesInUse.Contains(ab.DCSID) select ab).ToList();
if (airbasesList.Count == 0)
{
throw new Exception($"No airbase found with at least {Toolbox.MAXIMUM_FLIGHT_GROUP_SIZE} parking spots to use as an objective.");
}
int distanceMultiplier = 1;
do
{
MinMaxD searchDistance = new MinMaxD(first ? distance.Min : 0, distance.Max * distanceMultiplier);
List <DBEntryTheaterAirbase> airbasesInRange = airbasesList.FindAll(x => searchDistance.Contains(x.Coordinates.GetDistanceFrom(lastCoordinates) * Toolbox.METERS_TO_NM));
if (airbasesInRange.Count > 0)
{
DBEntryTheaterAirbase selectedAirbase = Toolbox.RandomFrom(airbasesInRange);
mission.AirbasesCoalition[selectedAirbase.DCSID] = mission.CoalitionEnemy;
return(selectedAirbase);
}
distanceMultiplier++;
if (distanceMultiplier > 128)
{
throw new Exception($"No target airbase found within range, try a larger objective range.");
}
} while (true);
}
public DefinitionTheaterSpawnPoint?GetRandomSpawnPoint(
TheaterLocationSpawnPointType[] validTypes = null, DCSCountry[] validCountries = null,
MinMaxD?distanceFrom = null, Coordinates?distanceOrigin = null,
MinMaxD?distanceFrom2 = null, Coordinates?distanceOrigin2 = null)
{
IEnumerable <DefinitionTheaterSpawnPoint> validSP = (from DefinitionTheaterSpawnPoint s in SpawnPoints where !UsedSpawnPointsID.Contains(s.UniqueID) select s);
if (validTypes != null)
{
validSP = (from DefinitionTheaterSpawnPoint s in validSP where validTypes.Contains(s.PointType) select s);
}
if (validCountries != null)
{
validSP = (from DefinitionTheaterSpawnPoint s in validSP where validCountries.Contains(s.Country) select s);
}
if (distanceFrom.HasValue && distanceOrigin.HasValue)
{
if (validSP.Count() == 0)
{
return(null);
}
MinMaxD searchRange = distanceFrom.Value;
IEnumerable <DefinitionTheaterSpawnPoint> validSPInRange = (from DefinitionTheaterSpawnPoint s in validSP select s);
do
{
validSPInRange = (from DefinitionTheaterSpawnPoint s in validSP where searchRange.Contains(distanceOrigin.Value.GetDistanceFrom(s.Coordinates)) select s);
searchRange = new MinMaxD(searchRange.Min * 0.9, Math.Max(100, searchRange.Max * 1.1));
} while (validSPInRange.Count() == 0);
validSP = (from DefinitionTheaterSpawnPoint s in validSPInRange select s);
}
if (distanceFrom2.HasValue && distanceOrigin2.HasValue)
{
if (validSP.Count() == 0)
{
return(null);
}
MinMaxD searchRange = distanceFrom2.Value;
IEnumerable <DefinitionTheaterSpawnPoint> validSPInRange = (from DefinitionTheaterSpawnPoint s in validSP select s);
do
{
validSPInRange = (from DefinitionTheaterSpawnPoint s in validSP where searchRange.Contains(distanceOrigin2.Value.GetDistanceFrom(s.Coordinates)) select s);
searchRange = new MinMaxD(searchRange.Min * 0.9, Math.Max(100, searchRange.Max * 1.1));
} while (validSPInRange.Count() == 0);
validSP = (from DefinitionTheaterSpawnPoint s in validSPInRange select s);
}
if (validSP.Count() == 0)
{
return(null);
}
DefinitionTheaterSpawnPoint selectedSpawnPoint = HQTools.RandomFrom(validSP.ToArray());
UsedSpawnPointsID.Add(selectedSpawnPoint.UniqueID);
return(selectedSpawnPoint);
}