Add a comment on how to enable an alternative HOT algorithm that enables one to fly...

diff --git a/src/Scenery/tilemgr.cxx b/src/Scenery/tilemgr.cxx
index 49d04c2e7866b4e343cea2521dbd4be0560de120..6f9c8fea086bf8db76fc6b54ca46331685069b04 100644 (file)
--- a/src/Scenery/tilemgr.cxx
+++ b/src/Scenery/tilemgr.cxx
@@ -448,6 +448,9 @@ int FGTileMgr::updateCurrentElevAtPos(sgdVec3 abs_pos_vector, Point3D center) {
         // be valid (and not just luck)
         hit = fgCurrentElev(abs_pos_vector,
                             sc,
+               // uncomment next paramater to fly under
+               // bridges and a slightly faster algorithm
+               // but you won't be able to land on aircraft carriers
                             // current_tile->get_terra_transform(),
                             &hit_list,
                             &hit_elev,