2018-countdown-time-management-audio

timer-last-song.js

const timeBeforeLastSongs = 60 * 1000; // 1 Minute
const dropTimeForLastSong = 5 * 1000; // 5 sec

export default {
	name: 'countdown',
	components: { Galaxy, ScoreList, Timer },
	// ...
	methods: {
		/// ...
		timeUpdate(event) {
			// If we're in the last song delay, we first drop the sound of current sound before
			if (
				event.diff < timeBeforeLastSongs &&
				event.diff > timeBeforeLastSongs - dropTimeForLastSong
			) {
                // We simulate a kind of fader to switch to last song
				const adjustDiff =
					event.diff - (timeBeforeLastSongs - dropTimeForLastSong);
				this.audioPlayer.manageVolumeFromPercent(
					adjustDiff / dropTimeForLastSong,
				);
			} else if (event.diff < timeBeforeLastSongs && !this.switchToLastsSongs) {
                // When it's time, we switch to last song
				this.audioPlayer.switchToLastsSongPlaylist();
				this.switchToLastsSongs = true;
			} else if (this.audioPlayer) {
                // We wait for the last 10 seconds to drop down the volume
				this.audioPlayer.manageSoundVolume(event.diff);
			}
		},
		// ...
	},
    // ...
};