public class Projectile : MonoBehaviour {
    public WorldEffect OnHit;
    public WorldEffect OnShot;

    public void Shoot(Entity owner) {
        // TODO: Execute launch here
        // Null safe extension method, only executes if effect is not null
        OnShot.ExecuteIfPresent(transform.position);
    }

    // Bla bla bla
        
    private void OnHitSomething(Collision col) {
        // TODO: Apply damage somehow
        var pos = col.contacts.First().point;
        OnHit.ExecuteIfPresent(pos);
    }
}

var timeController = new GameObject().AddComponent<TimeController>();
var curve = AnimationCurve.EaseInOut(0, 0, 1, 1);
var serviceA = timeController.RegisterContinualService(meta: new ConstantTimeMeta(2), priority: 10);
var serviceB = timeController.RegisterTimedService(duration: 5, meta: new AnimatedTimeMeta(curve), priority: 20);
/* 
 * Services A and B are automatically blended by the   
 * TimeController based on their priorities
 */