/// <summary>
/// Refuel the aircraft unit in air.
/// </summary>
/// <param name="refuelingAircraft">The aircraft unit to refuel from.</param>
/// <returns></returns>
public bool RefuelInAir(AircraftUnit refuelingAircraft)
{
// Check if refueling aircraft is within distance
var distanceToTargetM = MapHelper.CalculateDistanceM(Position.Coordinate, refuelingAircraft.Position.Coordinate);
if (distanceToTargetM < GameConstants.DISTANCE_TO_TARGET_IS_HIT_M)
{
// Make sure we're in the queue
if (!refuelingAircraft.IsInFuelQueue(this) && !refuelingAircraft.AddToFuelQueue(this, FuelDistanceCoveredSinceRefuelM))
{
return(false);
}
return(refuelingAircraft.GiveFuel(this));
}
// Take bingo fuel factor into account
distanceToTargetM *= GameConstants.BINGO_FUEL_FACTOR;
if (distanceToTargetM < FuelDistanceRemainingM)
{
// Check if refueling aircraft has enough fuel to give us. Make sure to remove from queue before adding
refuelingAircraft.RemoveFromFuelQueue(this);
if (refuelingAircraft.AddToFuelQueue(this, FuelDistanceCoveredSinceRefuelM + distanceToTargetM))
{
MissionType = GameConstants.MissionType.Ferry;
MissionTargetType = GameConstants.MissionTargetType.Undefined;
TargetDetectedUnit = null;
IsOrderedToReturnToBase = true;
ActualSpeedKph = GetSpeedInKphFromSpeedType(GameConstants.UnitSpeedType.Cruise);
SetActualSpeed(ActualSpeedKph); //force afterburners off immediately
UserDefinedSpeed = GameConstants.UnitSpeedType.Cruise;
SetDirty(GameConstants.DirtyStatus.UnitChanged);
// Change speed on refueling aircraft as well
refuelingAircraft.ActualSpeedKph = refuelingAircraft.GetSpeedInKphFromSpeedType(GameConstants.UnitSpeedType.Slow);
refuelingAircraft.SetActualSpeed(refuelingAircraft.ActualSpeedKph);
refuelingAircraft.UserDefinedSpeed = GameConstants.UnitSpeedType.Slow;
refuelingAircraft.SetDirty(GameConstants.DirtyStatus.UnitChanged);
// Create waypoint to the refueling aircraft and add refuel order
if (MovementOrder is MovementFormationOrder)
{
MovementOrder = new MovementOrder();
}
var wp = new Waypoint(refuelingAircraft);
wp.DesiredDistanceToTargetM = GameConstants.DISTANCE_TO_TARGET_IS_HIT_M; // TODO: set proper distance
wp.IsNotRecurring = true;
wp.Orders.Add(new BaseOrder()
{
OrderType = GameConstants.OrderType.RefuelInAir, SecondId = refuelingAircraft.Id
});
MovementOrder.AddWaypointToTop(wp);
ReCalculateEta();
return(true);
}
}
return(false);
}
/// <summary>
/// Transfer fuel to another aircraft unit.
/// </summary>
/// <param name="unit">The aircraft unit to transfer fuel to.</param>
/// <param name="fuelDistanceM">The amount of fuel to transfer.</param>
/// <returns>True if any fuel was transferred.</returns>
private bool GiveFuel(AircraftUnit unit)
{
// Make sure unit is in queue
if (!IsInFuelQueue(unit))
{
return(false);
}
// Get amount to give
var fuelDistanceM = _aircraftsToRefuel.Where(pair => pair.Key != null && pair.Key.Id == unit.Id).Sum(pair => pair.Value);
// Make sure we don't give too much fuel
fuelDistanceM = fuelDistanceM.Clamp(0.0, GetMaxFuelDistanceToGiveM());
if (fuelDistanceM > unit.FuelDistanceCoveredSinceRefuelM)
{
fuelDistanceM = unit.FuelDistanceCoveredSinceRefuelM;
}
// Give fuel to unit
unit.IsOrderedToReturnToBase = false;
unit.FuelDistanceCoveredSinceRefuelM -= fuelDistanceM;
// Remove fuel from ourself
FuelDistanceCoveredSinceRefuelM += fuelDistanceM;
// Remove unit from fueling list
RemoveFromFuelQueue(unit);
// Also remove units that's marked for deletion
_aircraftsToRefuel.RemoveAll(
pair => pair.Key == null || pair.Key.IsMarkedForDeletion);
// Go back to cruise speed if no more units to refuel
// TODO: go back to the user defined speed instead
if (!_aircraftsToRefuel.Any())
{
ActualSpeedKph = GetSpeedInKphFromSpeedType(GameConstants.UnitSpeedType.Cruise);
SetActualSpeed(ActualSpeedKph);
UserDefinedSpeed = GameConstants.UnitSpeedType.Cruise;
}
SetDirty(GameConstants.DirtyStatus.UnitChanged);
unit.SetDirty(GameConstants.DirtyStatus.UnitChanged);
// The unit should check for bingo fuel after refueling as it might be too far away from base.
//CheckForBingoFuel(); //removed to avoid stack exhausted
//unit.CheckForBingoFuel();
return(fuelDistanceM > 0.0);
}
