DOTweenCompletedAsObservable

DOTweenCompletedAsObservable.cs

// たぶんこんなかんぢ
public static class DOTweenExtensions
{
    public static IObservable<Sequence> CompletedAsObservable(this Sequence sequence)
    {
        var subject = new AsyncSubject<Sequence>();
        sequence.AppendCallback(() =>
        {
            subject.OnNext(sequence);
            subject.OnCompleted();
        });
        return subject.AsObservable();
    }
}