Basic notification-based rhythm system for Unity.
Add the RhythmSystem component to a GameObject and subscribe from other scripts:
public class Test : MonoBehaviour
{
private void Start()
{
RhythmTracker.instance.SetTempo(140);
RhythmTracker.instance.Subscribe(Trigger, RhythmTracker.TriggerTiming.Eighths);
}
// This will run on every eighth note at 140bpm;
private void Trigger(int beatIndex)
{
GetComponent<AudioSource>().Play();
print("Beat Index: " + beatIndex.ToString());
}
}You can also set an offset, to get advance notifications of beats, in addition to the beats themselves.
Note: While the RhythmTracker notifications are quite accurate, triggering clips with AudioSource.Play() or AudioSource.PlayOneShot() (as in the step sequencer demo scene) sounds pretty loose. I believe this is because there's an unpredictable delay between calling them and actually hearing the result. I plan to experiment with building a helper utility that features a buffer and uses AudioSource.PlayScheduled() to work around this issue.
Additionally, there's an Adaptive Music behavior with a demo. This component provides an "adaptive music" bed in its absolute simplest form (simple to the point that "adaptive music" may be a misnomer). It crossfades smoothly between any number of audio loops, in series, mapped to a single normalized float. So, you can create 5 variations of background music, for example. The first being calm and subdued, the second being a bit more aggressive, and so on... increasing in intensity. Then map health percentage, or proximity-to-boss to AdaptiveMusic.SetIntensity(float intensity). As the value increases from 0 to 1, the music gradually morphs through each variation.
Lots of plans to expand on this. In particular, I will extend RhythmTracker to allow an AdaptiveMusic component as a PlaybackAudioSource. I'd also like to introduce a way to queue tempo synced changes between adaptive loop sets representing different themes.
