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64 lines
1.9 KiB
C++

#pragma once
#include "timeline.h"
#include <SFML/Audio/Music.hpp>
#include <vector>
#include <memory>
class Note;
class ClassicTimeline : public Timeline
{
public:
explicit ClassicTimeline();
virtual ~ClassicTimeline();
virtual void update() override;
virtual void run(std::vector<Note*>&& notes, const microsec& visibility) override;
virtual void clear() override;
virtual microsec currentMusicOffset() const override;
virtual void drawVisibleNotes() const override;
void fetchVisibleNotes();
void findLastVisibleNote(const microsec& music_offset);
void findFirstVisibleNote();
Iterator getActiveNote() noexcept;
bool isExpired(const Iterator& iterator) const;
inline void expire(Iterator& iterator);
private:
std::vector<microsec> _input_intervals;
std::vector<Note*> _timeline;
microsec _visibility_offset;
sf::Music _music;
void updateVisibleSprites(const microsec& music_offset);
void checkCurrentActiveNote(const microsec& music_offset);
void checkForNextActiveNote(const microsec& music_offset);
bool isVisiblyClose(const Iterator& iterator, const microsec& music_offset) const;
inline bool nothingToDraw() const noexcept;
/* Difference between top and active note is that
* top note is the note handling input right now
* OR it's the closest note from current music offset
* position, not necessarily active. A note stops being top only
* after dying or being tapped by player, even if it's already
* past her perfect offset.
*
* Meanwhile active note is the note which is currently handling
* player input for grade.
*
* An active note is always top note but a top note
* is not always active note.
* */
Iterator _top_note;
Iterator _active_note;
Iterator _last_visible_note;
Iterator _first_visible_note;
};