//Utility function to check if a pair is already in the list.
private bool IsPairInList(CollisionPairs pairToCheck)
{
foreach (var pair in CollisionPairsList)
{
if (pair.currentTrack.Tag == pairToCheck.currentTrack.Tag &&
pair.otherTrack.Tag == pairToCheck.otherTrack.Tag)
{
return(true);
}
}
return(false);
}
public void CheckForCollision(List <ITrack> TrackList)
{
for (int i = 0; i < TrackList.Count; i++)
{
Track currentTrack = TrackList[i] as Track;
for (int j = 0; j < TrackList.Count; j++)
{
Track otherTrack = TrackList[j] as Track;
if (currentTrack.Tag != otherTrack.Tag)
{
//Track coordinates in space
var currentPoint = new Point(currentTrack.PositionX, currentTrack.PositionY);
var otherPoint = new Point(otherTrack.PositionX, otherTrack.PositionY);
//Collision Pair to check
var currentColpair = new CollisionPairs(currentTrack, otherTrack, currentTrack.Timestamp);
//Checking for event
if ((currentTrack.Altitude - otherTrack.Altitude) < 300 &&
(currentTrack.Altitude - otherTrack.Altitude) > -300 &&
currentPoint.DistanceTo(otherPoint) < 5000)
{
if (!IsPairInList(currentColpair))
{
CollisionPairsList.Add(currentColpair);
}
//Update timestamp.
CollisionPairsList.Find(e => e.currentTrack.Tag == currentTrack.Tag && e.otherTrack.Tag == otherTrack.Tag)
.timeOfConflict = currentTrack.Timestamp;
//Invoking eventhandler
var handler = Separation;
handler?.Invoke(this, new CollisionEventArgs(CollisionPairsList));
}
//Remove CollisionPair list if the pair is not colliding anymore
else if (IsPairInList(currentColpair))
{
//Find the object to remove
var removeObj = CollisionPairsList.Find(e =>
e.currentTrack.Tag == currentTrack.Tag && e.otherTrack.Tag == otherTrack.Tag);
CollisionPairsList.Remove(removeObj);
//Invoking handler to update Console.
var handler = NotColliding;
handler?.Invoke(this, new CollisionEventArgs(CollisionPairsList));
}
}
}
}
}
