Remove a queued block reservation if the block is released

[r2c2.git] / source / libr2c2 / zone.h

diff --git a/source/libr2c2/zone.h b/source/libr2c2/zone.h
index fc44d4f205de91ad88bc3b7458310f2a39287996..647a6195e2dcac73567a15d934b6ea4379f17d74 100644 (file)
--- a/source/libr2c2/zone.h
+++ b/source/libr2c2/zone.h
@@ -22,6 +22,7 @@ public:
                virtual void finish();
                void block(unsigned);
                void direction_hint(unsigned, Direction);
+               void preferred_direction(Direction);
        };
 
 private:
@@ -29,6 +30,7 @@ private:
        std::string qualifier;
        unsigned number;
        int up_end;
+       Direction preferred_dir;
 
 public:
        Zone(Layout &);
@@ -43,14 +45,21 @@ public:
        const std::string &get_qualifier() const { return qualifier; }
        unsigned get_number() const { return number; }
 
+private:
+       virtual void on_track_added(Track &);
+
+public:
        void set_direction_towards(Track &, Direction);
+       bool has_direction() const { return up_end>=0; }
+       void set_preferred_direction(Direction);
+       Direction get_preferred_direction() const { return preferred_dir; }
        void clear_direction();
        virtual TrackIter iter_for(Track &, Direction) const;
 private:
        TrackIter next_iter(const TrackIter &) const;
 public:
        using TrackChain::get_end;
-       TrackIter get_end(Direction) const;
+       virtual TrackIter get_end(Direction) const;
 
        void save(std::list<Msp::DataFile::Statement> &) const;
        virtual Msp::DataFile::Statement save_reference() const;