/// <summary>
/// Signals that it is time to update logic.
/// </summary>
/// <param name="elapsed">The time passed since last frame.</param>
public void Update(TimeSpan elapsed)
{
foreach (string registrant in coordinator.Registrants)
{
ReadOnlyCollection <BehaviorGroup> groups = coordinator.Select(registrant);
for (int i = 0; i < groups.Count; i++)
{
// foreach'ing == trying to remove behavior during run-time == exception
for (int j = 0; j < groups[i].Count; j++)
{
if (groups[i][j].Enabled)
{
groups[i][j].Update(elapsed);
}
}
}
}
}
