project-kyoku/note.cpp

#include "note.h"
#include <cmath>

Note::Note(microsec offset, microsec life_span_offset, Note::Arrow type) :
    _offset(offset),                                     // TODO: Move to struct NoteData
    _start_handling_offset(_offset + life_span_offset),  //   so Note::Note(NoteData&& data) : . . .
    _end_handling_offset(_offset - life_span_offset),
    _type(type)
{}

void Note::setPosition(coordinates position)
{
    _position = position;
}

coordinates Note::position() const noexcept
{
    return _position;
}

microsec Note::offset() const noexcept
{
    return _offset;
}

NoteGrade Note::onTap(Arrow arrow_type, microsec tap_time_stamp) const
{
    if (arrow_type != _type)
        return {0, NoteGrade::Rating::WRONG};

    microsec odds = std::abs(tap_time_stamp - _offset);
    return calculatePrecision(odds);
}

NoteGrade Note::calculatePrecision(microsec odds) const
{
    NoteGrade ret(0, NoteGrade::Rating::BAD);

    if (odds < _precision_qualifier)
    {
        ret = {50, NoteGrade::Rating::GREAT};
    }

    return ret;
}

bool Note::isActive(microsec music_play_offset) const noexcept
{
    return music_play_offset > _start_handling_offset
        && music_play_offset < _end_handling_offset;
}

void Note::resetPrecisionQualifier(microsec qualifier)
{
    _precision_qualifier = qualifier;
}

microsec Note::_precision_qualifier = 500000; // Default initialization as 0.5 second.