X-Git-Url: http://git.tdb.fi/?p=r2c2.git;a=blobdiff_plain;f=source%2Flibr2c2%2Ftrainroutemetric.cpp;h=d3878d4aaec5d3b6dc875ee7b0453e0da82376f4;hp=1fc4fcea2389d917ecaa90627791801dc0ee46e2;hb=8c7fc0b79ce88e0295e0e6ea52cb7eb753158d8a;hpb=5b71cb905051d654c150cb0e098cade0cb502105

diff --git a/source/libr2c2/trainroutemetric.cpp b/source/libr2c2/trainroutemetric.cpp
index 1fc4fce..d3878d4 100644
--- a/source/libr2c2/trainroutemetric.cpp
+++ b/source/libr2c2/trainroutemetric.cpp
@@ -9,22 +9,28 @@ namespace R2C2 {
 
 TrainRouteMetric::TrainRouteMetric(const TrackChain &tc, TrackChain::Direction dir)
 {
-	/* Initialize goals for tracks in the target chain.  We travel outwards from
-	the target in the search phase so the iters appear to point the wrong way. */
-	TrackChain::Direction reverse_dir = (dir==TrackChain::DOWN ? TrackChain::UP : TrackChain::DOWN);
-	const TrackChain::TrackSet &ctracks = tc.get_tracks();
-	for(TrackChain::TrackSet::const_iterator i=ctracks.begin(); i!=ctracks.end(); ++i)
+	vector<TrackIter> ends;
+	if(dir==TrackChain::UNSPECIFIED)
 	{
-		if(dir==TrackChain::UNSPECIFIED)
+		for(unsigned i=0; i<2; ++i)
+			if(TrackIter end = tc.get_end(i))
+				ends.push_back(end);
+	}
+	else if(TrackIter end = tc.get_end(dir))
+		ends.push_back(end);
+
+	/* Initialize goals for the ends of the target chain.  We travel away from
+	the goals in the search phase so the iters appear to point the wrong way. */
+	for(vector<TrackIter>::const_iterator i=ends.begin(); i!=ends.end(); ++i)
+	{
+		const TrackType::Endpoint &ep = i->endpoint();
+		unsigned nls = (*i)->get_n_link_slots();
+		for(unsigned j=0; j<nls; ++j)
 		{
-			unsigned nls = (*i)->get_n_link_slots();
-			for(unsigned j=0; j<nls; ++j)
-				if(Track *link = (*i)->get_link(j))
-					if(!ctracks.count(link))
-						goals.push_back(TrackIter(*i, j));
+			TrackIter iter(i->track(), j);
+			if(ep.has_common_paths(iter.endpoint()))
+				goals.push_back(iter);
 		}
-		else if(TrackIter iter = tc.iter_for(**i, reverse_dir))
-			goals.push_back(iter);
 	}
 
 	list<TrackIter> queue;