public void AddThemes(params AreaTheme[] themes)
{
_themes.Clear();
_alreadyPlayingThemes.Clear();
ActiveTheme = null;
foreach (var theme in themes)
{
#if UNITY_EDITOR
if (theme == null || !theme.AmbientSound.IsNotEmpty())
{
Debug.LogError("AddTheme caused: theme is null or empty");
return;
}
if (_themes.Any(t => t.Name == theme.Name))
{
Debug.LogError("AddTheme caused: Theme with name " + theme.Name + " already exists");
return;
}
#endif
_themes.Add(theme);
}
}
private IEnumerator ActivateTheme(string themeName)
{
yield return(null);
// If null then fade all themes
if (string.IsNullOrEmpty(themeName))
{
ActiveTheme = null;
yield break;
}
AreaTheme theme = _themes.FirstOrDefault(t => t.Name == themeName);
// If there is no such theme - do nothing
if (theme == null)
{
yield break;
}
// If this theme is already active - do nothing
if (ActiveTheme != null && theme.Name == ActiveTheme.Name)
{
yield break;
}
// Make this theme active
ActiveTheme = theme;
// If theme is already playing - do nothing
if (!_alreadyPlayingThemes.Add(theme))
{
yield break;
}
// Sarting theme playing
AudioClip clip = GetClipFromSound(theme.AmbientSound);
var listener = FindObjectOfType <AudioListener>().transform;
AudioSource source = GetAudioSource(listener, listener.position);
source.clip = clip;
source.loop = true;
source.volume = 0;
source.Play();
Dictionary <RandomSound, float> randomSoundDelays =
theme.RandomSounds
.Where(r => r.Sound.IsNotEmpty())
.ToDictionary(k => k, v => Random.Range(5f, v.MaxSecondsDelay));
float activeRaito = theme.Name == ActiveTheme.Name ? 1 : 0;
// Store all currently playing theme sounds to be able change their volume
var activeAudioSources = new HashSet <AudioSource>(new[] { source });
while (true)
{
yield return(null);
bool isActive = ActiveTheme.Name == theme.Name;
activeRaito = Mathf.Lerp(activeRaito, isActive ? 1 : 0, Time.deltaTime * ThemeFadeFactor);
float actualVolume = theme.BaseVolume * activeRaito * CurrentAmbientVolume;
// Remove all sounds that are already finished playing
activeAudioSources.RemoveWhere(a => a != source && !a.isPlaying);
// Change all sounds volume depending to the actual one
foreach (AudioSource audioSource in activeAudioSources)
{
audioSource.volume = actualVolume;
}
// Play random sounds
foreach (RandomSound sound in randomSoundDelays.Keys.ToArray())
{
randomSoundDelays[sound] -= Time.deltaTime;
if (randomSoundDelays[sound] <= 0)
{
AudioSource audioSource = Play(sound.Sound, actualVolume);
// Store sound source for later use
activeAudioSources.Add(audioSource);
randomSoundDelays[sound] = Random.Range(sound.MinSecondsDelay, sound.MaxSecondsDelay);
}
}
}
}
