From 0c2a3e6c435fd4cf05cc5275f750d341842aa543 Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Tue, 25 Jun 2013 19:12:22 +0300
Subject: [PATCH] Make vehicles aware of which train they are in

---
 source/libr2c2/train.cpp   | 3 +++
 source/libr2c2/vehicle.cpp | 6 ++++++
 source/libr2c2/vehicle.h   | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/source/libr2c2/train.cpp b/source/libr2c2/train.cpp
index 6cb3205..74bc503 100644
--- a/source/libr2c2/train.cpp
+++ b/source/libr2c2/train.cpp
@@ -53,6 +53,7 @@ Train::Train(Layout &l, const VehicleType &t, unsigned a, const string &p):
 		speed_quantizer = new SpeedQuantizer(speed_steps);
 
 	vehicles.push_back(new Vehicle(layout, loco_type));
+	vehicles.back()->set_train(this);
 
 	layout.add_train(*this);
 
@@ -87,6 +88,7 @@ void Train::add_vehicle(const VehicleType &vt)
 	Vehicle *veh = new Vehicle(layout, vt);
 	vehicles.back()->attach_back(*veh);
 	vehicles.push_back(veh);
+	veh->set_train(this);
 }
 
 void Train::remove_vehicle(unsigned i)
@@ -561,6 +563,7 @@ void Train::Loader::vehicle(ArticleNumber art_nr)
 	Vehicle *veh = new Vehicle(obj.layout, vtype);
 	obj.vehicles.back()->attach_back(*veh);
 	obj.vehicles.push_back(veh);
+	veh->set_train(&obj);
 }
 
 } // namespace R2C2
diff --git a/source/libr2c2/vehicle.cpp b/source/libr2c2/vehicle.cpp
index 457cb33..a9d5135 100644
--- a/source/libr2c2/vehicle.cpp
+++ b/source/libr2c2/vehicle.cpp
@@ -16,6 +16,7 @@ namespace R2C2 {
 Vehicle::Vehicle(Layout &l, const VehicleType &t):
 	Object(l),
 	type(t),
+	train(0),
 	next(0),
 	prev(0),
 	front_sensor(0),
@@ -45,6 +46,11 @@ Vehicle *Vehicle::clone(Layout *to_layout) const
 	return veh;
 }
 
+void Vehicle::set_train(Train *t)
+{
+	train = t;
+}
+
 void Vehicle::attach_back(Vehicle &veh)
 {
 	if(next || veh.prev)
diff --git a/source/libr2c2/vehicle.h b/source/libr2c2/vehicle.h
index e7427b1..616ad36 100644
--- a/source/libr2c2/vehicle.h
+++ b/source/libr2c2/vehicle.h
@@ -9,6 +9,7 @@
 namespace R2C2 {
 
 class Layout;
+class Train;
 
 class attachment_error: public std::logic_error
 {
@@ -69,6 +70,7 @@ private:
 	};
 
 	const VehicleType &type;
+	Train *train;
 	Vehicle *next;
 	Vehicle *prev;
 	TrackPosition track_pos;
@@ -85,6 +87,8 @@ public:
 	virtual Vehicle *clone(Layout * = 0) const;
 	virtual const VehicleType &get_type() const { return type; }
 
+	void set_train(Train *);
+	Train *get_train() const { return train; }
 	void attach_back(Vehicle &);
 	void attach_front(Vehicle &);
 	void detach_back();
-- 
2.43.0