From 0c1214ad0680c3bf65c1ee5f366dbafabc9d188d Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 10 Jul 2013 21:39:34 +0300
Subject: [PATCH] Use beam gates for positioning vehicles

---
 source/libr2c2/train.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/source/libr2c2/train.cpp b/source/libr2c2/train.cpp
index b5f600e..02e9d31 100644
--- a/source/libr2c2/train.cpp
+++ b/source/libr2c2/train.cpp
@@ -6,6 +6,7 @@
 #include <msp/time/units.h>
 #include <msp/time/utils.h>
 #include "aicontrol.h"
+#include "beamgate.h"
 #include "block.h"
 #include "catalogue.h"
 #include "driver.h"
@@ -475,6 +476,25 @@ void Train::sensor_state_changed(Sensor &sensor, Sensor::State state)
 				vehicles.front()->place(track, 0, Vehicle::FRONT_AXLE);
 		}
 	}
+	else if(BeamGate *gate = dynamic_cast<BeamGate *>(&sensor))
+	{
+		if(!advancing && vehicles.front()->get_track())
+		{
+			TrackIter track = allocator.iter_for(*block).track_iter();
+			for(; (track && &track->get_block()==block); track=track.next())
+				if(track.track()==gate->get_track())
+				{
+					if(reverse)
+						track = track.reverse();
+					float offset = gate->get_offset_from_endpoint(track.entry());
+					if(reverse)
+						vehicles.back()->place(track, offset, Vehicle::BACK_BUFFER);
+					else
+						vehicles.front()->place(track, offset, Vehicle::FRONT_BUFFER);
+					break;
+				}
+		}
+	}
 }
 
 void Train::halt_event(bool h)
-- 
2.43.0