/**
* Get the rail type for a given label.
* @param label the railtype label.
* @param allow_alternate_labels Search in the alternate label lists as well.
* @return the railtype.
*/
RailType GetRailTypeByLabel(RailTypeLabel label, bool allow_alternate_labels)
{
/* Loop through each rail type until the label is found */
for (var r = RailType.RAILTYPE_BEGIN; r != RailType.RAILTYPE_END; r++)
{
RailtypeInfo rti = GetRailTypeInfo(r);
if (rti.label == label)
{
return(r);
}
}
if (allow_alternate_labels)
{
/* Test if any rail type defines the label as an alternate. */
for (var r = RailType.RAILTYPE_BEGIN; r != RailType.RAILTYPE_END; r++)
{
RailtypeInfo rti = GetRailTypeInfo(r);
if (rti.alternate_labels.Contains(label))
{
return(r);
}
}
}
/* No matching label was found, so it is invalid */
return(RailType.INVALID_RAILTYPE);
}
/**
* Add the rail types that are to be introduced at the given date.
* @param current The currently available railtypes.
* @param date The date for the introduction comparisons.
* @return The rail types that should be available when date
* introduced rail types are taken into account as well.
*/
public RailTypes AddDateIntroducedRailTypes(RailTypes current, Date date)
{
RailTypes rts = current;
for (RailType rt = RailType.RAILTYPE_BEGIN; rt != RailType.RAILTYPE_END; rt++)
{
RailtypeInfo rti = GetRailTypeInfo(rt);
/* Unused rail type. */
if (rti.label == 0)
{
continue;
}
/* Not date introduced. */
if (!MathFuncs.IsInsideMM(rti.introduction_date, 0, MAX_DAY))
{
continue;
}
/* Not yet introduced at this date. */
if (rti.introduction_date > date)
{
continue;
}
/* Have we introduced all required railtypes? */
RailTypes required = rti.introduction_required_railtypes;
if ((rts & required) != required)
{
continue;
}
rts |= rti.introduces_railtypes;
}
/* When we added railtypes we need to run this method again; the added
* railtypes might enable more rail types to become introduced. */
return(rts == current ? rts : AddDateIntroducedRailTypes(rts, date));
}