X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fcollision-engraver.cc;h=15ee2d29239711fd3eda3b02413626078e2b52ab;hb=2bbacb364aa29041af9cbbbd32cfad2e8e387cb3;hp=d1eb2dd3c0a4b49bc29a7f4553468c43b677420c;hpb=7d71f371e483a4a305fc16a2b3fbce879a464253;p=lilypond.git

diff --git a/lily/collision-engraver.cc b/lily/collision-engraver.cc
index d1eb2dd3c0..15ee2d2923 100644
--- a/lily/collision-engraver.cc
+++ b/lily/collision-engraver.cc
@@ -31,7 +31,7 @@ class Collision_engraver : public Engraver
   vector<Grob *> note_columns_;
 
 protected:
-  DECLARE_ACKNOWLEDGER (note_column);
+  void acknowledge_note_column (Grob_info);
   void process_acknowledged ();
   void stop_translation_timestep ();
 public:
@@ -73,12 +73,18 @@ Collision_engraver::stop_translation_timestep ()
   note_columns_.clear ();
 }
 
-Collision_engraver::Collision_engraver ()
+Collision_engraver::Collision_engraver (Context *c)
+  : Engraver (c)
 {
   col_ = 0;
 }
 
-ADD_ACKNOWLEDGER (Collision_engraver, note_column);
+
+void
+Collision_engraver::boot ()
+{
+  ADD_ACKNOWLEDGER (Collision_engraver, note_column);
+}
 
 ADD_TRANSLATOR (Collision_engraver,
                 /* doc */