#ifndef TIMELINE_H #define TIMELINE_H #include #include #include using microsec = sf::Int64; class Timeline { public: virtual ~Timeline() = default; virtual void update() = 0; virtual void init() = 0; virtual void clear() = 0; virtual microsec currentMusicOffset() const = 0; virtual void drawVisibleNotes(sf::RenderWindow& window) const = 0; }; #endif // TIMELINE_H