Function IsVehicleTypeDisabled

src/engine.cpp:948–958

* Checks if a vehicle type is disabled for all/ai companies. * @param type The vehicle type which shall be checked. * @param ai If true, check if the type is disabled for AI companies, otherwise check if * the vehicle type is disabled for human companies. * @return Whether or not a vehicle type is disabled. */

 * @return Whether or not a vehicle type is disabled.
 */
static bool IsVehicleTypeDisabled(VehicleType type, bool ai)
{
	switch (type) {
		case VEH_TRAIN:    return _settings_game.vehicle.max_trains == 0   || (ai && _settings_game.ai.ai_disable_veh_train);
		case VEH_ROAD:     return _settings_game.vehicle.max_roadveh == 0  || (ai && _settings_game.ai.ai_disable_veh_roadveh);
		case VEH_SHIP:     return _settings_game.vehicle.max_ships == 0    || (ai && _settings_game.ai.ai_disable_veh_ship);
		case VEH_AIRCRAFT: return _settings_game.vehicle.max_aircraft == 0 || (ai && _settings_game.ai.ai_disable_veh_aircraft);

		default: NOT_REACHED();
	}
}

/** Daily check to offer an exclusive engine preview to the companies. */
static const IntervalTimer<TimerGameCalendar> _calendar_engines_daily({TimerGameCalendar::DAY, TimerGameCalendar::Priority::ENGINE}, [](auto)