(svn r17182) -Feature(ish) [FS#2945]: sort vehicle lists on (timetable) delay

src/lang/english.txt

@@ -259,6 +259,7 @@ STR_SORT_BY_MODEL                                               :Model
 STR_SORT_BY_VALUE                                               :Value
 STR_SORT_BY_LENGTH                                              :Length
 STR_SORT_BY_LIFE_TIME                                           :Remaining life time
+STR_SORT_BY_TIMETABLE_DELAY                                     :Timetable delay
 STR_SORT_BY_FACILITY                                            :Station type
 STR_SORT_BY_WAITING                                             :Waiting cargo value
 STR_SORT_BY_RATING_MAX                                          :Highest cargo rating

src/vehicle_gui.cpp

@@ -51,6 +51,7 @@ static GUIVehicleList::SortFunction VehicleModelSorter;
 static GUIVehicleList::SortFunction VehicleValueSorter;
 static GUIVehicleList::SortFunction VehicleLengthSorter;
 static GUIVehicleList::SortFunction VehicleTimeToLiveSorter;
+static GUIVehicleList::SortFunction VehicleTimetableDelaySorter;
 
 GUIVehicleList::SortFunction * const BaseVehicleListWindow::vehicle_sorter_funcs[] = {
 	&VehicleNumberSorter,
@@ -65,6 +66,7 @@ GUIVehicleList::SortFunction * const BaseVehicleListWindow::vehicle_sorter_funcs
 	&VehicleValueSorter,
 	&VehicleLengthSorter,
 	&VehicleTimeToLiveSorter,
+	&VehicleTimetableDelaySorter,
 };
 
 const StringID BaseVehicleListWindow::vehicle_sorter_names[] = {
@@ -80,6 +82,7 @@ const StringID BaseVehicleListWindow::vehicle_sorter_names[] = {
 	STR_SORT_BY_VALUE,
 	STR_SORT_BY_LENGTH,
 	STR_SORT_BY_LIFE_TIME,
+	STR_SORT_BY_TIMETABLE_DELAY,
 	INVALID_STRING_ID
 };
 
@@ -626,6 +629,13 @@ static int CDECL VehicleTimeToLiveSorter(const Vehicle * const *a, const Vehicle
 	return (r != 0) ? r : VehicleNumberSorter(a, b);
 }
 
+/** Sort vehicles by the timetable delay */
+static int CDECL VehicleTimetableDelaySorter(const Vehicle * const *a, const Vehicle * const *b)
+{
+	int r = (*a)->lateness_counter - (*b)->lateness_counter;
+	return (r != 0) ? r : VehicleNumberSorter(a, b);
+}
+
 void InitializeGUI()
 {
 	MemSetT(&_sorting, 0);