Fix a problem with estimated remaining distance in route planner

[r2c2.git] / source / libr2c2 / trainrouteplanner.cpp

diff --git a/source/libr2c2/trainrouteplanner.cpp b/source/libr2c2/trainrouteplanner.cpp
index d9eedd2d4daccd0d33224548325c594859c7777a..97f1cf6c8501af801a42b2123768503c929e7b14 100644 (file)
--- a/source/libr2c2/trainrouteplanner.cpp
+++ b/source/libr2c2/trainrouteplanner.cpp
@@ -505,6 +505,16 @@ void TrainRoutePlanner::TrainRoutingState::advance_track(unsigned next_path)
        offset = 0;
 }
 
+void TrainRoutePlanner::TrainRoutingState::set_path(unsigned p)
+{
+       path = p;
+       OccupiedTrack *next_occ = occupied_tracks->next;
+       if(!--occupied_tracks->refcount)
+               delete occupied_tracks;
+       occupied_tracks = new OccupiedTrack(*track, path, next_occ);
+       update_estimate();
+}
+
 void TrainRoutePlanner::TrainRoutingState::update_estimate()
 {
        TrackIter iter = track.reverse(path);
@@ -604,8 +614,7 @@ void TrainRoutePlanner::RoutingStep::create_successor(RoutingStep &next, unsigne
 {
        TrainRoutingState &train = next.trains[train_index];
 
-       train.path = path;
-       train.update_estimate();
+       train.set_path(path);
        next.update_estimate();
        if(next.is_viable())
                new_steps.push_back(next);