/// <summary>
/// Try to find a connection between the current junction and a reconnect junction, along the given TVN
/// We do a depth-first search, using the main tracks first.
/// The result (the path) is stored in a list of linking tvns.
/// </summary>
/// <param name="nextTvn">The TVN (Track Vector Node index) that we will take.</param>
/// <param name="currentJunctionIndex">Index of the current junction</param>
/// <returns>true if a path was found</returns>
private bool TryToFindConnectionVia(int currentJunctionIndex, int nextTvn)
{
if (nextTvn <= 0)
{
return(false); // something wrong in train database.
}
int nextJunctionIndex = TrackExtensions.GetNextJunctionIndex(currentJunctionIndex, nextTvn);
if (DisAllowedJunctionIndexes.Contains(nextJunctionIndex))
{
return(false);
}
bool nextJunctionIsFacing = (nextTvn == TrackExtensions.TrackNode(nextJunctionIndex).TrailingTvn());
linkingTvns.Add(nextTvn);
bool succeeded = TryToFindConnection(nextJunctionIndex, nextJunctionIsFacing);
if (!succeeded)
{ //Pop the index that did not work
linkingTvns.RemoveAt(linkingTvns.Count - 1);
}
return(succeeded);
}
/// <summary>
/// From the current pathnode and the linking tracknode, fin the junctionIndex of the next junction (or possibly end-point)
/// </summary>
/// <param name="linkingTrackNodeIndex">The index of the tracknode leaving the node</param>
/// <returns>The index of the junction index at the end of the track (as seen from the node)</returns>
public override int GetNextJunctionIndex(int linkingTrackNodeIndex)
{
return(TrackExtensions.GetNextJunctionIndex(this.JunctionIndex, linkingTrackNodeIndex));
}
