Function ChangeMinutesPerYear

src/settings_table.cpp:637–667

* Callback after the player changes the minutes per year. * @param new_value The intended new value of the setting, used for clamping. */

 * @param new_value The intended new value of the setting, used for clamping.
 */
static void ChangeMinutesPerYear(int32_t new_value)
{
	/* We don't allow setting Minutes Per Year below default, unless it's to 0 for frozen calendar time. */
	if (new_value < CalendarTime::DEF_MINUTES_PER_YEAR) {
		int clamped;

		/* If the new value is 1, we're probably at 0 and trying to increase the value, so we should jump up to default. */
		if (new_value == 1) {
			clamped = CalendarTime::DEF_MINUTES_PER_YEAR;
		} else {
			clamped = CalendarTime::FROZEN_MINUTES_PER_YEAR;
		}

		/* Override the setting with the clamped value. */
		if (_game_mode == GM_MENU) {
			_settings_newgame.economy.minutes_per_calendar_year = clamped;
		} else {
			_settings_game.economy.minutes_per_calendar_year = clamped;
		}
	}

	/* If the setting value is not the default, force the game to use wallclock timekeeping units.
	 * This can only happen in the menu, since the pre_cb ensures this setting can only be changed there, or if we're already using wallclock units.
	 */
	if (_game_mode == GM_MENU && (_settings_newgame.economy.minutes_per_calendar_year != CalendarTime::DEF_MINUTES_PER_YEAR)) {
		if (_settings_newgame.economy.timekeeping_units != TKU_WALLCLOCK) {
			_settings_newgame.economy.timekeeping_units = TKU_WALLCLOCK;
			ChangeTimekeepingUnits(TKU_WALLCLOCK);
		}
	}
}

/* Get the valid range of the "minutes per calendar year" setting. */
static std::tuple<int32_t, uint32_t> GetMinutesPerYearRange(const IntSettingDesc &)