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133 lines
3.5 KiB
C++
133 lines
3.5 KiB
C++
#include "timeline.h"
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#include "note.h"
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#include <SFML/Graphics/RenderTarget.hpp>
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#include <iostream>
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Timeline::Timeline()
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{
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// BPM of METEOR is 170.
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// Length is 1:14
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// I calculated that the time between beats is about 1412162 microseconds
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_timeline.reserve(1000);
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microsec starting_beat_offset = 372162;
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int amount_of_beats = 209;
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microsec interval = 1412162;
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microsec note_input_offset = 412162;
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microsec bpm_iterator = starting_beat_offset;
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microsec bpm_end = starting_beat_offset + (interval * amount_of_beats);
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_visibility_offset = note_input_offset * 3;
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Note::resetPrecisionQualifier(note_input_offset / 3);
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while (bpm_iterator < bpm_end)
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{
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_timeline.emplace_back(new Note(bpm_iterator, note_input_offset));
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bpm_iterator += interval;
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}
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_timeline[0]->setPosition({200, 200});
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_timeline[1]->setPosition({250, 200});
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_timeline[2]->setPosition({300, 200});
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_timeline[3]->setPosition({350, 200});
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_timeline[4]->setPosition({400, 200});
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_timeline[5]->setPosition({450, 200});
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_timeline[6]->setPosition({200, 300});
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_timeline[7]->setPosition({250, 300});
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_timeline[8]->setPosition({300, 300});
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_timeline[9]->setPosition({350, 300});
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_timeline[10]->setPosition({400, 300});
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_timeline[11]->setPosition({450, 300});
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_active_note = nullptr;
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_last_visible_note = _timeline.end();
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_top_note = _timeline.begin();
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prepareNotesToDraw(0);
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}
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void Timeline::prepareNotesToDraw(const microsec &music_offset)
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{
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auto note_iterator = _top_note;
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while (((*note_iterator)->offset() - _visibility_offset) >= music_offset)
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++note_iterator;
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_last_visible_note = note_iterator;
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}
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Timeline::~Timeline()
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{
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clear();
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}
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void Timeline::clear()
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{
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for (auto note : _timeline)
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delete note;
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_timeline.clear();
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_top_note = _timeline.end();
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_last_visible_note = _timeline.end();
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_active_note = nullptr;
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Note::resetPrecisionQualifier();
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}
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static sf::RectangleShape createNoteGlyph(const std::vector<Note*>::const_iterator& note_to_draw)
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{ // Temporary solution
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sf::RectangleShape ret;
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const auto position = (*note_to_draw)->position();
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ret.setPosition(position.x, position.y);
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ret.setFillColor(sf::Color(255, 100, 0));
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ret.setSize({10.f, 10.f});
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return ret;
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}
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void Timeline::draw(sf::RenderTarget& target, sf::RenderStates states) const // Temporary solution
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{
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if (_last_visible_note == _timeline.end() || _top_note > _last_visible_note)
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return;
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auto note_to_draw = _top_note;
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while (note_to_draw != (_last_visible_note + 1))
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{
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target.draw(createNoteGlyph(note_to_draw), states);
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++note_to_draw;
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}
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}
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void Timeline::update(const microsec &music_offset)
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{
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checkCurrentActiveNote(music_offset);
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checkForNextActiveNote(music_offset);
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prepareNotesToDraw(music_offset);
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}
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void Timeline::checkCurrentActiveNote(const microsec &music_offset)
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{
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if (_active_note && !_active_note->isActive(music_offset))
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{
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_active_note = nullptr;
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++_top_note;
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}
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}
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void Timeline::checkForNextActiveNote(const microsec &music_offset)
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{
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if (!_active_note && (*_top_note)->isActive(music_offset))
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{
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std::cout << "New active note: " << music_offset << '\n';
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_active_note = *_top_note;
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}
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}
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Note* Timeline::fetchActiveNote(const microsec &music_offset) noexcept
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{
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std::cout << "Clicked at: " << music_offset << '\n';
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update(music_offset);
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return _active_note;
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}
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