public BGMState Play(ISoundPlayable playable, String bgm, float fadeInTime, float delayedIn, float delayedOut, bool isLoop)
{
playable.Play(bgm, delayedIn, delayedOut, isLoop);
if (fadeInTime > 0.0f)
{
playable.SetVolume(0.0f);
return(new BGMStateFadeIn(fadeInTime));
}
playable.SetVolume(0.75f);
return(new BGMStatePlaying());
}
public BGMState Update(ISoundPlayable playable, float deltaTime)
{
elapsedTime += deltaTime;
if (elapsedTime >= fadeInTime)
{
playable.SetVolume(0.75f);
return(new BGMStatePlaying());
}
else
{
playable.SetVolume(elapsedTime / fadeInTime * 0.75f);
}
return(this);
}
public BGMState Update(ISoundPlayable playable, float deltaTime)
{
elapsedTime += deltaTime;
if (elapsedTime >= fadeOutTime)
{
playable.SetVolume(0.0f);
playable.Stop();
return(new BGMStateWait());
}
else
{
playable.SetVolume(1.0f - elapsedTime / fadeOutTime);
}
return(this);
}