X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibr2c2%2Fvehicle.cpp;h=1c4a5b0f441ec9d5e6b40f711cc54afd176cbf08;hb=54392d65e2053d1eacb4cfcc435f1013993f2973;hp=ca2aa42316a16d8da5b5eea506e5cd87b8c79e48;hpb=ca9d278f9472206ad9a01190dcef9f0eb1bcc274;p=r2c2.git

diff --git a/source/libr2c2/vehicle.cpp b/source/libr2c2/vehicle.cpp
index ca2aa42..1c4a5b0 100644
--- a/source/libr2c2/vehicle.cpp
+++ b/source/libr2c2/vehicle.cpp
@@ -87,9 +87,12 @@ void Vehicle::detach_front()
 	prev = 0;
 }
 
-void Vehicle::place(Track &t, unsigned e, float o, PlaceMode m)
+void Vehicle::place(const TrackIter &t, float o, PlaceMode m)
 {
-	track_pos = TrackPosition(&t, e, o);
+	if(!t)
+		throw invalid_argument("Vehicle::place");
+
+	track_pos = TrackPosition(t, o);
 
 	if(m==FRONT_AXLE)
 		track_pos.advance(-type.get_front_axle_offset());
@@ -431,14 +434,11 @@ Vehicle::Rod::Rod(const VehicleType::Rod &t):
 
 
 Vehicle::TrackPosition::TrackPosition():
-	track(0),
-	ep(0),
 	offs(0)
 { }
 
-Vehicle::TrackPosition::TrackPosition(Track *t, unsigned e, float o):
+Vehicle::TrackPosition::TrackPosition(const TrackIter &t, float o):
 	track(t),
-	ep(e),
 	offs(o)
 { }
 
@@ -448,33 +448,30 @@ void Vehicle::TrackPosition::advance(float d)
 		return;
 
 	offs += d;
-	TrackIter iter(track, ep);
-	while(iter)
+	while(track)
 	{
-		float path_len = iter->get_type().get_path_length(iter->get_active_path());
+		float path_len = track->get_type().get_path_length(track->get_active_path());
 
 		if(offs>path_len)
 		{
 			offs -= path_len;
-			iter = iter.next();
+			track = track.next();
 		}
 		else
 			break;
 	}
 
-	while(iter && offs<0)
+	while(track && offs<0)
 	{
-		iter = iter.flip().reverse();
+		track = track.flip().reverse();
 
-		if(iter)
+		if(track)
 		{
-			float path_len = iter->get_type().get_path_length(iter->get_active_path());
+			float path_len = track->get_type().get_path_length(track->get_active_path());
 			offs += path_len;
 		}
 	}
 
-	track = iter.track();
-	ep = iter.entry();
 	if(!track)
 		offs = 0;
 }
@@ -482,7 +479,7 @@ void Vehicle::TrackPosition::advance(float d)
 TrackPoint Vehicle::TrackPosition::get_point() const
 {
 	if(track)
-		return track->get_point(ep, offs);
+		return track->get_point(track.entry(), offs);
 	else
 		return TrackPoint();
 }