Use some template magic to deduce the proper 3D type

[r2c2.git] / source / libr2c2 / track.cpp

diff --git a/source/libr2c2/track.cpp b/source/libr2c2/track.cpp
index 8ecb9b9bac00833eaa70190982fcb1933b43e9ae..7a1746716574abdbedb40c0356042ae7932dba66 100644 (file)
--- a/source/libr2c2/track.cpp
+++ b/source/libr2c2/track.cpp
@@ -183,6 +183,13 @@ void Track::set_active_path(unsigned p)
        layout.get_driver().set_turnout(turnout_id, p);
 }
 
+float Track::get_path_length(int p) const
+{
+       if(p<0)
+               p = active_path;
+       return type.get_path_length(p);
+}
+
 OrientedPoint Track::get_point(unsigned epi, unsigned path, float d) const
 {
        OrientedPoint p = type.get_point(epi, path, d);
@@ -337,9 +344,14 @@ bool Track::break_link(unsigned i)
                return false;
 
        links[i] = 0;
-       other->break_link(*this);
-       // XXX Creates the blocks twice, because the other track calls this too
-       layout.create_blocks(*this);
+       if(!other->break_link(*this))
+       {
+               /* If the call doesn't succeed, it means that the other track already
+               broke the link and is calling us right now.  Recreate blocks in the inner
+               call so it occurs before any signals are emitted. */
+               layout.create_blocks(*this);
+       }
+
        signal_link_changed.emit(i, 0);
 
        return true;