/// <summary>
/// Steps one step backward
/// </summary>
public void StepBack()
{
Changed = true;
while (Events.Count > 0)
{
ModelEvent evt = Events.Last();
if (evt.Time < CurrentTime)
{
CurrentTime = evt.Time;
break;
}
evt.RollBack(Runner);
Events.Remove(evt);
}
if (Events.Count == 0)
{
CurrentTime = 0.0;
}
}
/// <summary>
/// Steps one step backward
/// </summary>
/// <param name="time">the time to step back</param>
public void StepBack(double time)
{
currentTime = currentTime - time;
if (currentTime < 0)
{
currentTime = 0;
}
while (Events.Count > 0)
{
ModelEvent evt = Events.Last();
if (evt.Time < currentTime)
{
break;
}
else
{
evt.RollBack();
Events.Remove(evt);
}
}
}