X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Flibr2c2%2Ftrainrouteplanner.cpp;h=5bffec1d899c535fc295bf2847faea29d7a2987d;hb=b652dfb998dd416d26f909798e58964ef84eda11;hp=9e74eca1c7b1b2c0c18846d586cf86a774c363a1;hpb=ee92bee98fa084645b17f65cebe4eabf70e4dee9;p=r2c2.git

diff --git a/source/libr2c2/trainrouteplanner.cpp b/source/libr2c2/trainrouteplanner.cpp
index 9e74eca..5bffec1 100644
--- a/source/libr2c2/trainrouteplanner.cpp
+++ b/source/libr2c2/trainrouteplanner.cpp
@@ -214,6 +214,7 @@ void TrainRoutePlanner::finalize_plan()
 TrainRoutePlanner::TrainRoutingInfo::TrainRoutingInfo(Train &t):
 	train(&t),
 	speed(train->get_maximum_speed()),
+	first_noncritical(train->get_first_noncritical_block().block()),
 	router(train->get_ai_of_type<TrainRouter>()),
 	destination(0),
 	has_duration(false)
@@ -272,6 +273,7 @@ TrainRoutePlanner::OccupiedTrack::~OccupiedTrack()
 
 TrainRoutePlanner::TrainRoutingState::TrainRoutingState(TrainRoutingInfo &inf):
 	info(&inf),
+	critical(true),
 	occupied_tracks(0),
 	state(MOVING),
 	delay(info->router->get_departure_delay()),
@@ -307,6 +309,7 @@ TrainRoutePlanner::TrainRoutingState::TrainRoutingState(const TrainRoutingState
 	info(other.info),
 	track(other.track),
 	path(other.path),
+	critical(other.critical),
 	occupied_tracks(other.occupied_tracks),
 	offset(other.offset),
 	back_offset(other.back_offset),
@@ -361,6 +364,9 @@ bool TrainRoutePlanner::TrainRoutingState::check_arrival()
 			waypoint = -1;
 	}
 
+	if(info->first_noncritical->has_track(*track))
+		critical = false;
+
 	return false;
 }
 
@@ -369,20 +375,37 @@ void TrainRoutePlanner::TrainRoutingState::advance(float distance)
 	offset += distance;
 	back_offset += distance;
 
-	OccupiedTrack *last_occ = occupied_tracks;
-	for(unsigned n=occupied_tracks->n_tracks; n>1; --n)
-		last_occ = last_occ->next;
+	unsigned count_to_free = 0;
+	unsigned last_sensor_addr = 0;
+	float distance_after_sensor = 0;
+	OccupiedTrack *occ = occupied_tracks;
+	for(unsigned n=occupied_tracks->n_tracks; n>0; --n)
+	{
+		if(unsigned saddr = occ->track->get_sensor_address())
+		{
+			if(saddr!=last_sensor_addr)
+			{
+				count_to_free = 0;
+				distance_after_sensor = 0;
+			}
+			last_sensor_addr = saddr;
+		}
+
+		++count_to_free;
+		distance_after_sensor += occ->path_length;
+
+		occ = occ->next;
+	}
 
-	// XXX What if there's multiple tracks to remove?
-	if(back_offset>last_occ->path_length)
+	if(count_to_free && back_offset>distance_after_sensor)
 	{
-		back_offset -= last_occ->path_length;
+		back_offset -= distance_after_sensor;
 		if(occupied_tracks->refcount>1)
 		{
 			--occupied_tracks->refcount;
 			occupied_tracks = new OccupiedTrack(*occupied_tracks);
 		}
-		--occupied_tracks->n_tracks;
+		occupied_tracks->n_tracks -= count_to_free;
 	}
 
 	distance_traveled += distance;
@@ -475,15 +498,26 @@ void TrainRoutePlanner::RoutingStep::create_successors(list<RoutingStep> &new_st
 	train.advance_track(0);
 
 	const TrackType::Endpoint &next_entry_ep = next_track.endpoint();
-	for(unsigned i=0; next_entry_ep.paths>>i; ++i)
-		if(next_entry_ep.has_path(i))
-		{
-			train.path = i;
-			train.update_estimate();
-			next.update_estimate();
-			if(next.is_viable())
-				new_steps.push_back(next);
-		}
+	if(train.critical)
+	{
+		train.path = train.track->get_type().coerce_path(train.track.entry(), train.track->get_active_path());
+		train.update_estimate();
+		next.update_estimate();
+		if(next.is_viable())
+			new_steps.push_back(next);
+	}
+	else
+	{
+		for(unsigned i=0; next_entry_ep.paths>>i; ++i)
+			if(next_entry_ep.has_path(i))
+			{
+				train.path = i;
+				train.update_estimate();
+				next.update_estimate();
+				if(next.is_viable())
+					new_steps.push_back(next);
+			}
+	}
 
 	new_steps.sort();
 	for(list<RoutingStep>::iterator i=new_steps.begin(); ++i!=new_steps.end(); )
@@ -492,7 +526,7 @@ void TrainRoutePlanner::RoutingStep::create_successors(list<RoutingStep> &new_st
 		i->update_estimate();
 	}
 
-	if(next_entry_ep.paths!=next_track->get_type().get_paths())
+	if(next_entry_ep.paths!=next_track->get_type().get_paths() && !train.critical)
 	{
 		RoutingStep wait(this);
 		wait.advance(dt);