X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibr2c2%2Fblock.cpp;h=f02762c85a958e668b5b4e200c86bcbb877f0767;hb=91385545a7d76784a17af421b0def49775be0d4c;hp=2df313e27c1f8c53104c4314908be2391eec7b52;hpb=1ab448a3031cc47327ceabf612ad4a0789aaf9af;p=r2c2.git

diff --git a/source/libr2c2/block.cpp b/source/libr2c2/block.cpp
index 2df313e..f02762c 100644
--- a/source/libr2c2/block.cpp
+++ b/source/libr2c2/block.cpp
@@ -18,6 +18,7 @@ Block::Block(Layout &l, Track &start):
 	id(0),
 	sensor_id(start.get_sensor_id()),
 	turnout_id(start.get_turnout_id()),
+	sensor(0),
 	train(0)
 {
 	add_track(start);
@@ -43,7 +44,8 @@ Block::Block(Layout &l, Track &start):
 
 	determine_id();
 
-	sensor = new TrackCircuit(layout, *this);
+	if(sensor_id)
+		sensor = new TrackCircuit(layout, *this);
 
 	layout.add(*this);
 }