/// <summary>
/// Creates a record of the current state, taking the latest record (if
/// any) into account. If a latest state is given, this function will
/// return null if there is no change between the current and latest.
/// </summary>
internal static RailStateRecord CreateRecord(
Tick tick,
RailState current,
RailStateRecord latestRecord = null)
{
if (latestRecord != null)
{
RailState latest = latestRecord.State;
bool shouldReturn =
(current.CompareMutableData(latest) > 0) ||
(current.IsControllerDataEqual(latest) == false);
if (shouldReturn == false)
{
return(null);
}
}
RailStateRecord record = RailResource.Instance.CreateRecord();
record.Overwrite(tick, current);
return(record);
}
