Method BuildPlaylists

src/music_gui.cpp:103–141

Rebuild all playlists for the current music set */

/** Rebuild all playlists for the current music set */
void MusicSystem::BuildPlaylists()
{
	const MusicSet *set = BaseMusic::GetUsedSet();

	/* Clear current playlists */
	for (auto &playlist : this->standard_playlists) playlist.clear();
	this->music_set.clear();

	/* Build standard playlists, and a list of available music */
	for (uint i = 0; i < NUM_SONGS_AVAILABLE; i++) {
		PlaylistEntry entry(set, i);
		if (!entry.IsValid()) continue;

		this->music_set.push_back(entry);

		/* Add theme song to theme-only playlist */
		if (i == 0) this->standard_playlists[PLCH_THEMEONLY].push_back(std::move(entry));

		/* Don't add the theme song to standard playlists */
		if (i > 0) {
			this->standard_playlists[PLCH_ALLMUSIC].push_back(entry);
			uint theme = (i - 1) / NUM_SONGS_CLASS;
			this->standard_playlists[PLCH_OLDSTYLE + theme].push_back(std::move(entry));
		}
	}

	/* Load custom playlists
	 * Song index offsets are 1-based, zero indicates invalid/end-of-list value */
	for (uint i = 0; i < NUM_SONGS_PLAYLIST; i++) {
		if (_settings_client.music.custom_1[i] > 0 && _settings_client.music.custom_1[i] <= NUM_SONGS_AVAILABLE) {
			PlaylistEntry entry(set, _settings_client.music.custom_1[i] - 1);
			if (entry.IsValid()) this->standard_playlists[PLCH_CUSTOM1].push_back(std::move(entry));
		}
		if (_settings_client.music.custom_2[i] > 0 && _settings_client.music.custom_2[i] <= NUM_SONGS_AVAILABLE) {
			PlaylistEntry entry(set, _settings_client.music.custom_2[i] - 1);
			if (entry.IsValid()) this->standard_playlists[PLCH_CUSTOM2].push_back(std::move(entry));
		}
	}
}

/**
 * Switch to another playlist, or reload the current one.