Add a "default" mode to TT autofill rounding setting, set as default

Use game ticks per minute or day ticks

src/lang/english.txt

@@ -1852,7 +1852,10 @@ STR_CONFIG_SETTING_TIMETABLE_SEPARATION_RATE_HELPTEXT           :How much of the
 STR_CONFIG_SETTING_TIMETABLE_SHOW_ARRIVAL_DEPARTURE             :Show arrival and departure in timetables: {STRING2}
 STR_CONFIG_SETTING_TIMETABLE_SHOW_ARRIVAL_DEPARTURE_HELPTEXT    :Display anticipated arrival and departure times in timetables
 STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS            :Round up auto-filled timetable times to multiples of this many ticks: {STRING2}
-STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS_HELPTEXT   :Timetable times adjusted by timetable automation are not rounded. A day at a a day length of 1 is 74 ticks.
+STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS_HELPTEXT   :Timetable times adjusted by timetable automation are not rounded. A day at a day length of 1 is 74 ticks.{}By default the game ticks per minute value is used if using minutes, otherwise 74 ticks is used.
+STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS_VALUE      :{COMMA}{NBSP}tick{P 0 "" s}
+###setting-zero-is-special
+STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS_DEFAULT    :Default
 
 STR_CONFIG_SETTING_QUICKGOTO                                    :Quick creation of vehicle orders: {STRING2}
 STR_CONFIG_SETTING_QUICKGOTO_HELPTEXT                           :Pre-select the 'goto cursor' when opening the orders window

src/table/settings/company_settings.ini

@@ -176,14 +176,14 @@ patxname = ""auto_timetable_separation_rate""
 base     = CompanySettings
 var      = timetable_autofill_rounding
 type     = SLE_UINT16
-flags    = SF_PER_COMPANY
-def      = 74
-min      = 1
+flags    = SF_PER_COMPANY | SF_GUI_0_IS_SPECIAL
+def      = 0
+min      = 0
 max      = 1000
 interval = 10
 str      = STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS
 strhelp  = STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS_HELPTEXT
-strval   = STR_JUST_INT
+strval   = STR_CONFIG_SETTING_TIMETABLE_AUTOFILL_ROUNDING_TICKS_VALUE
 cat      = SC_EXPERT
 patxname = ""timetable_autofill_rounding""
 

src/timetable_cmd.cpp

@@ -886,7 +886,8 @@ void UpdateVehicleTimetable(Vehicle *v, bool travelling)
 		 * Thus always make sure at least one tick is used between the
 		 * processing of different orders when filling the timetable. */
 		Company *owner = Company::GetIfValid(v->owner);
-		uint rounding_factor = owner ? owner->settings.timetable_autofill_rounding : DAY_TICKS;
+		uint rounding_factor = owner ? owner->settings.timetable_autofill_rounding : 0;
+		if (rounding_factor == 0) rounding_factor = _settings_game.game_time.time_in_minutes ? _settings_game.game_time.ticks_per_minute : DAY_TICKS;
 		uint time_to_set = CeilDiv(std::max(time_taken, 1U), rounding_factor) * rounding_factor;
 
 		if (travel_field && (autofilling || !real_timetable_order->IsTravelTimetabled())) {