public void CollisionWarning(IDictionary <string, Aircraft> aircrafts)
{
for (int i = 0; i < aircrafts.Count; i++)
{
for (int j = i + 1; j < aircrafts.Count; j++)
{
var ac1 = aircrafts.Values.ElementAt(i);
var ac2 = aircrafts.Values.ElementAt(j);
if (IsColliding(ac1, ac2))
{
if (!_collidingAircrafts.Any(x => x.Item1.Tag == ac1.Tag && x.Item2.Tag == ac2.Tag))
{
//This raises the collision event - but only the first time
var tempTuple = new Tuple <Aircraft, Aircraft, SeparationEventArgs>(ac1, ac2, new SeparationEventArgs(ac1, ac2));
_collidingAircrafts.Add(tempTuple);
SeparationEvent?.Invoke(this, tempTuple.Item3);
}
}
else
{
if (_collidingAircrafts.Any(x => x.Item1.Tag == ac1.Tag && x.Item2.Tag == ac2.Tag))
{
//This removes the collision event.
var tempTuple =
_collidingAircrafts.Find(x => x.Item1.Tag == ac1.Tag && x.Item2.Tag == ac2.Tag);
SeparationAvoidedEvent?.Invoke(this, tempTuple.Item3);
_collidingAircrafts.Remove(tempTuple);
}
}
}
}
}
public void DetectCollision(List <Plane> planes)
{
//We don't want to deal with empty lists or less than 2 planes
if (planes == null || planes.Count < 2)
{
return;
}
//Check if any new collisions have occured (The dreaded n^2 loop)
for (int i = 0; i < planes.Count - 1; ++i)
{
for (int j = i + 1; j < planes.Count; ++j)
{
if (planes[j].Speed == 0)
{
break; //Break in case of new plane
}
int differenceInAltitude = planes[j].Altitude - planes[i].Altitude;
if (differenceInAltitude < 300 && differenceInAltitude > -300)
{
//Planes are within 300 meters in altitude, otherwise just ignore
double distance = CalculateDistance(planes[i], planes[j]);
if (distance < 5000)
{
//Verify that collision is not already added to list
if (Collisions.Contains(Tuple.Create(planes[i], planes[j])))
{
break;
}
Collisions.Add(Tuple.Create(planes[i], planes[j]));
SeparationEvent?.Invoke(this, new CollisionEventArgs(planes[i], planes[j]));
}
}
}
}
}
public void MonitorSeparation(Dictionary <string, List <Track> > tracks)
{
for (int i = 0; i < tracks.Count; i++)
{
for (int j = i + 1; j < tracks.Count - i; j++)
{
if (tracks.ElementAt(i).Value.Count > 1 && tracks.ElementAt(j).Value.Count > 1 && tracks.ElementAt(i + j).Value.Count > 1)
{
var needSeparation = CheckSeparation(tracks.ElementAt(i).Value[1].Position.X, tracks.ElementAt(i).Value[1].Position.Y,
tracks.ElementAt(i + j).Value[1].Position.X, tracks.ElementAt(i + j).Value[1].Position.Y, tracks.ElementAt(i).Value[1].Altitude, tracks.ElementAt(i + j).Value[1].Altitude);
if (needSeparation)
{
SeparationEvent?.Invoke(this, new SeparationEventArgs()
{
Track1 = tracks.ElementAt(i).Value[1].Tag,
TimeOfOccurence = tracks.ElementAt(i).Value[1].TimeStamp,
Track2 = tracks.ElementAt(j).Value[1].Tag
});
}
}
}
}
}
protected virtual void NewSeparationEvent(SeparationEvent e)
{
SeparationEvent?.Invoke(this, e);
}