public void Step(long now)
{
if (IsRunning && nextRun <= now)
{
IsRunning = coroutine.MoveNext();
StateReturn sr = coroutine.Current;
nextRun = now + (sr?.NextRun ?? 0);
if (sr?.NextState != null)
{
coroutine = sr.NextState;
IsRunning = true;
}
}
}
