From: Mikko Rasa <tdb@tdb.fi>
Date: Fri, 11 Apr 2014 19:31:18 +0000 (+0300)
Subject: Diverge from a route early only if it's a loop
X-Git-Url: http://git.tdb.fi/?p=r2c2.git;a=commitdiff_plain;h=c796e17cef61ad2e3f476b6037892d7bc6c52680

Diverge from a route early only if it's a loop

This does not entirely fix handling of chained routes, but it's a step in
the right direction.
---

diff --git a/source/libr2c2/trainrouter.cpp b/source/libr2c2/trainrouter.cpp
index 5691ac9..a6a47c0 100644
--- a/source/libr2c2/trainrouter.cpp
+++ b/source/libr2c2/trainrouter.cpp
@@ -266,14 +266,21 @@ void TrainRouter::train_advanced(Block &block)
 	// Check if we've reached the next route
 	if(routes.size()>1)
 	{
-		const Route &route = **++routes.begin();
-		if(route.has_track(*b_iter.endpoint().track))
+		Track &track = *b_iter.endpoint().track;
+		const Route *route = get_route();
+		bool change_route = false;
+		if(route->is_loop())
+			change_route = (*++routes.begin())->has_track(track);
+		else
+			change_route = !route->has_track(track);
+
+		if(change_route)
 		{
 			routes.pop_front();
-			const Route *r = get_route();
+			route = get_route();
 			// XXX Exceptions?
-			signal_route_changed.emit(r);
-			signal_event.emit(Message("route-changed", r));
+			signal_route_changed.emit(route);
+			signal_event.emit(Message("route-changed", route));
 		}
 	}