Bugfix: length along track was incorrect (only computed length along

current quad).


git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/irrlicht@3745 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/tracks/graph_node.cpp

@@ -103,5 +103,5 @@ void GraphNode::getDistances(const Vec3 &xyz, Vec3 *result)
         result->setX( (closest-xyz2d).getLength());   // to the right
     else
         result->setX(-(closest-xyz2d).getLength());   // to the left
-    result->setY( (closest-m_lower_center).getLength());
+    result->setY( m_distance_from_start + (closest-m_lower_center).getLength());
 }   // getDistances