settings_table.cpp

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/*
 * This file is part of OpenTTD.
 * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
 * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <https://www.gnu.org/licenses/old-licenses/gpl-2.0>.
 */

 
#include "stdafx.h"
#include "settings_table.h"
#include "currency.h"
#include "screenshot.h"
#include "network/network.h"
#include "network/network_func.h"
#include "network/core/config.h"
#include "pathfinder/pathfinder_type.h"
#include "linkgraph/linkgraphschedule.h"
#include "genworld.h"
#include "train.h"
#include "news_func.h"
#include "window_func.h"
#include "company_func.h"
#include "timer/timer_game_calendar.h"
#if defined(WITH_FREETYPE) || defined(_WIN32) || defined(WITH_COCOA)
#define HAS_TRUETYPE_FONT
#include "fontcache.h"
#endif
#include "textbuf_gui.h"
#include "rail_gui.h"
#include "elrail_func.h"
#include "error.h"
#include "town.h"
#include "video/video_driver.hpp"
#include "sound/sound_driver.hpp"
#include "music/music_driver.hpp"
#include "blitter/factory.hpp"
#include "base_media_base.h"
#include "base_media_music.h"
#include "base_media_sounds.h"
#include "ai/ai_config.hpp"
#include "ai/ai.hpp"
#include "game/game_config.hpp"
#include "ship.h"
#include "smallmap_gui.h"
#include "roadveh.h"
#include "roadveh_cmd.h"
#include "vehicle_func.h"
#include "viewport_func.h"
#include "void_map.h"
#include "station_func.h"
#include "station_base.h"
#include "aircraft.h"
#include "aircraft_cmd.h"
 
#include "table/strings.h"
#include "table/settings.h"
 
#include "safeguards.h"
 
SettingTable _company_settings{ _company_settings_table };
SettingTable _currency_settings{ _currency_settings_table };
SettingTable _difficulty_settings{ _difficulty_settings_table };
SettingTable _multimedia_settings{ _multimedia_settings_table };
SettingTable _economy_settings{ _economy_settings_table };
SettingTable _game_settings{ _game_settings_table };
SettingTable _gui_settings{ _gui_settings_table };
SettingTable _linkgraph_settings{ _linkgraph_settings_table };
SettingTable _locale_settings{ _locale_settings_table };
SettingTable _misc_settings{ _misc_settings_table };
SettingTable _network_private_settings{ _network_private_settings_table };
SettingTable _network_secrets_settings{ _network_secrets_settings_table };
SettingTable _network_settings{ _network_settings_table };
SettingTable _news_display_settings{ _news_display_settings_table };
SettingTable _old_gameopt_settings{ _old_gameopt_settings_table };
SettingTable _pathfinding_settings{ _pathfinding_settings_table };
SettingTable _script_settings{ _script_settings_table };
SettingTable _window_settings{ _window_settings_table };
SettingTable _world_settings{ _world_settings_table };
#if defined(_WIN32) && !defined(DEDICATED)
SettingTable _win32_settings{ _win32_settings_table };
#endif /* _WIN32 */
 
 
/* Begin - Callback Functions for the various settings. */

static StringID SettingTitleWallclock(const IntSettingDesc &sd)
{
  return TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU) ? sd.str + 1 : sd.str;
}

static StringID SettingHelpWallclock(const IntSettingDesc &sd)
{
  return TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU) ? sd.str_help + 1 : sd.str_help;
}

static std::pair<StringParameter, StringParameter> SettingsValueVelocityUnit([[maybe_unused]] const IntSettingDesc &sd, int32_t value)
{
  StringID val;
  switch (value) {
    case 0: val = STR_CONFIG_SETTING_LOCALISATION_UNITS_VELOCITY_IMPERIAL; break;
    case 1: val = STR_CONFIG_SETTING_LOCALISATION_UNITS_VELOCITY_METRIC; break;
    case 2: val = STR_CONFIG_SETTING_LOCALISATION_UNITS_VELOCITY_SI; break;
    case 3: val = TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU) ? STR_CONFIG_SETTING_LOCALISATION_UNITS_VELOCITY_GAMEUNITS_SECS : STR_CONFIG_SETTING_LOCALISATION_UNITS_VELOCITY_GAMEUNITS_DAYS; break;
    case 4: val = STR_CONFIG_SETTING_LOCALISATION_UNITS_VELOCITY_KNOTS; break;
    default: NOT_REACHED();
  }
  return {val, {}};
}

static std::pair<StringParameter, StringParameter> SettingsValueAbsolute(const IntSettingDesc &sd, int32_t value)
{
  return {sd.str_val + ((value >= 0) ? 1 : 0), abs(value)};
}

static std::pair<StringParameter, StringParameter> ServiceIntervalSettingsValueText(const IntSettingDesc &sd, int32_t value)
{
  VehicleDefaultSettings *vds;
  if (_game_mode == GM_MENU || !Company::IsValidID(_current_company)) {
    vds = &_settings_client.company.vehicle;
  } else {
    vds = &Company::Get(_current_company)->settings.vehicle;
  }
 
  StringID str;
  if (value == 0) {
    str = sd.str_val + 3;
  } else if (vds->servint_ispercent) {
    str = sd.str_val + 2;
  } else if (TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU)) {
    str = sd.str_val + 1;
  } else {
    str = sd.str_val;
  }
  return {str, value};
}

static void v_PositionMainToolbar(int32_t)
{
  if (_game_mode != GM_MENU) PositionMainToolbar(nullptr);
}

static void v_PositionStatusbar(int32_t)
{
  if (_game_mode != GM_MENU) {
    PositionStatusbar(nullptr);
    PositionNewsMessage(nullptr);
    PositionNetworkChatWindow(nullptr);
  }
}

static void RedrawSmallmap(int32_t)
{
  BuildLandLegend();
  BuildOwnerLegend();
  SetWindowClassesDirty(WC_SMALLMAP);
}

static void UpdateLinkgraphColours(int32_t)
{
  BuildLinkStatsLegend();
  MarkWholeScreenDirty();
}
 
static void StationSpreadChanged(int32_t)
{
  InvalidateWindowData(WC_SELECT_STATION, 0);
  InvalidateWindowData(WC_BUILD_STATION, 0);
}
 
static void UpdateConsists(int32_t)
{
  for (Train *t : Train::Iterate()) {
    /* Update the consist of all trains so the maximum speed is set correctly. */
    if (t->IsFrontEngine() || t->IsFreeWagon()) t->ConsistChanged(CCF_TRACK);
  }
  InvalidateWindowClassesData(WC_BUILD_VEHICLE, 0);
}

static void UpdateAllServiceInterval(int32_t new_value)
{
  bool update_vehicles;
  VehicleDefaultSettings *vds;
  if (_game_mode == GM_MENU || !Company::IsValidID(_current_company)) {
    vds = &_settings_client.company.vehicle;
    update_vehicles = false;
  } else {
    vds = &Company::Get(_current_company)->settings.vehicle;
    update_vehicles = true;
  }
 
  if (new_value != 0) {
    /* Service intervals are in percents. */
    vds->servint_trains   = DEF_SERVINT_PERCENT;
    vds->servint_roadveh  = DEF_SERVINT_PERCENT;
    vds->servint_aircraft = DEF_SERVINT_PERCENT;
    vds->servint_ships    = DEF_SERVINT_PERCENT;
  } else if (TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU)) {
    /* Service intervals are in minutes. */
    vds->servint_trains   = DEF_SERVINT_MINUTES_TRAINS;
    vds->servint_roadveh  = DEF_SERVINT_MINUTES_ROADVEH;
    vds->servint_aircraft = DEF_SERVINT_MINUTES_AIRCRAFT;
    vds->servint_ships    = DEF_SERVINT_MINUTES_SHIPS;
  } else {
    /* Service intervals are in days. */
    vds->servint_trains   = DEF_SERVINT_DAYS_TRAINS;
    vds->servint_roadveh  = DEF_SERVINT_DAYS_ROADVEH;
    vds->servint_aircraft = DEF_SERVINT_DAYS_AIRCRAFT;
    vds->servint_ships    = DEF_SERVINT_DAYS_SHIPS;
  }
 
  if (update_vehicles) {
    const Company *c = Company::Get(_current_company);
    for (Vehicle *v : Vehicle::Iterate()) {
      if (v->owner == _current_company && v->IsPrimaryVehicle() && !v->ServiceIntervalIsCustom()) {
        v->SetServiceInterval(CompanyServiceInterval(c, v->type));
        v->SetServiceIntervalIsPercent(new_value != 0);
      }
    }
  }
 
  SetWindowClassesDirty(WC_VEHICLE_DETAILS);
}
 
static bool CanUpdateServiceInterval(VehicleType, int32_t &new_value)
{
  VehicleDefaultSettings *vds;
  if (_game_mode == GM_MENU || !Company::IsValidID(_current_company)) {
    vds = &_settings_client.company.vehicle;
  } else {
    vds = &Company::Get(_current_company)->settings.vehicle;
  }
 
  /* Test if the interval is valid */
  int32_t interval = GetServiceIntervalClamped(new_value, vds->servint_ispercent);
  return new_value == 0 || interval == new_value;
}
 
static void UpdateServiceInterval(VehicleType type, int32_t new_value)
{
  if (_game_mode != GM_MENU && Company::IsValidID(_current_company)) {
    for (Vehicle *v : Vehicle::Iterate()) {
      if (v->owner == _current_company && v->type == type && v->IsPrimaryVehicle() && !v->ServiceIntervalIsCustom()) {
        v->SetServiceInterval(new_value);
      }
    }
  }
 
  SetWindowClassesDirty(WC_VEHICLE_DETAILS);
}

static int32_t GetDefaultServiceInterval(const IntSettingDesc &sd, VehicleType type)
{
  VehicleDefaultSettings *vds;
  if (_game_mode == GM_MENU || !Company::IsValidID(_current_company)) {
    vds = &_settings_client.company.vehicle;
  } else {
    vds = &Company::Get(_current_company)->settings.vehicle;
  }
 
  if (vds->servint_ispercent) return DEF_SERVINT_PERCENT;
 
  if (TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU)) {
    switch (type) {
      case VEH_TRAIN:    return DEF_SERVINT_MINUTES_TRAINS;
      case VEH_ROAD:     return DEF_SERVINT_MINUTES_ROADVEH;
      case VEH_AIRCRAFT: return DEF_SERVINT_MINUTES_AIRCRAFT;
      case VEH_SHIP:     return DEF_SERVINT_MINUTES_SHIPS;
      default: NOT_REACHED();
    }
  }
 
  return sd.def;
}
 
static std::tuple<int32_t, uint32_t> GetServiceIntervalRange(const IntSettingDesc &)
{
  VehicleDefaultSettings *vds;
  if (_game_mode == GM_MENU || !Company::IsValidID(_current_company)) {
    vds = &_settings_client.company.vehicle;
  } else {
    vds = &Company::Get(_current_company)->settings.vehicle;
  }
 
  if (vds->servint_ispercent) return { MIN_SERVINT_PERCENT, MAX_SERVINT_PERCENT };
 
  if (TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU)) {
    return { MIN_SERVINT_MINUTES, MAX_SERVINT_MINUTES };
  }
 
  return { MIN_SERVINT_DAYS, MAX_SERVINT_DAYS };
}
 
static void TrainAccelerationModelChanged(int32_t)
{
  for (Train *t : Train::Iterate()) {
    if (t->IsFrontEngine()) {
      t->tcache.cached_max_curve_speed = t->GetCurveSpeedLimit();
      t->UpdateAcceleration();
    }
  }
 
  /* These windows show acceleration values only when realistic acceleration is on. They must be redrawn after a setting change. */
  SetWindowClassesDirty(WC_ENGINE_PREVIEW);
  InvalidateWindowClassesData(WC_BUILD_VEHICLE, 0);
  SetWindowClassesDirty(WC_VEHICLE_DETAILS);
}

static void TrainSlopeSteepnessChanged(int32_t)
{
  for (Train *t : Train::Iterate()) {
    if (t->IsFrontEngine()) t->CargoChanged();
  }
}

static void RoadVehAccelerationModelChanged(int32_t)
{
  if (_settings_game.vehicle.roadveh_acceleration_model != AM_ORIGINAL) {
    for (RoadVehicle *rv : RoadVehicle::Iterate()) {
      if (rv->IsFrontEngine()) {
        rv->CargoChanged();
      }
    }
  }
 
  /* These windows show acceleration values only when realistic acceleration is on. They must be redrawn after a setting change. */
  SetWindowClassesDirty(WC_ENGINE_PREVIEW);
  InvalidateWindowClassesData(WC_BUILD_VEHICLE, 0);
  SetWindowClassesDirty(WC_VEHICLE_DETAILS);
}

static void RoadVehSlopeSteepnessChanged(int32_t)
{
  for (RoadVehicle *rv : RoadVehicle::Iterate()) {
    if (rv->IsFrontEngine()) rv->CargoChanged();
  }
}

static void AircraftRangeChanged(int32_t)
{
  for (Aircraft *v : Aircraft::Iterate()) {
    v->acache.cached_max_range = Engine::Get(v->engine_type)->GetRange();
    v->acache.cached_max_range_sqr = v->acache.cached_max_range * v->acache.cached_max_range;
 
    /* Reset destination is too far state */
    if (v->flags.Test(VehicleAirFlag::DestinationTooFar)) {
      v->flags.Reset(VehicleAirFlag::DestinationTooFar);
      SetWindowWidgetDirty(WC_VEHICLE_VIEW, v->index, WID_VV_START_STOP);
      DeleteVehicleNews(v->index, AdviceType::AircraftDestinationTooFar);
    }
  }
}
 
static void TownFoundingChanged(int32_t)
{
  if (_game_mode != GM_EDITOR && _settings_game.economy.found_town == TF_FORBIDDEN) {
    CloseWindowById(WC_FOUND_TOWN, 0);
  } else {
    InvalidateWindowData(WC_FOUND_TOWN, 0);
  }
}
 
static void ZoomMinMaxChanged(int32_t)
{
  ConstrainAllViewportsZoom();
  GfxClearSpriteCache();
  InvalidateWindowClassesData(WC_SPRITE_ALIGNER);
  if (AdjustGUIZoom(false)) {
    ReInitAllWindows(true);
  }
}
 
static void SpriteZoomMinChanged(int32_t)
{
  GfxClearSpriteCache();
  /* Force all sprites to redraw at the new chosen zoom level */
  MarkWholeScreenDirty();
}

static void InvalidateNewGRFChangeWindows(int32_t)
{
  InvalidateWindowClassesData(WC_SAVELOAD);
  CloseWindowByClass(WC_GAME_OPTIONS);
  ReInitAllWindows(false);
}
 
static void InvalidateCompanyLiveryWindow(int32_t)
{
  InvalidateWindowClassesData(WC_COMPANY_COLOUR, -1);
  ResetVehicleColourMap();
}
 
static void DifficultyNoiseChange(int32_t)
{
  if (_game_mode == GM_NORMAL) {
    UpdateAirportsNoise();
    if (_settings_game.economy.station_noise_level) {
      InvalidateWindowClassesData(WC_TOWN_VIEW, 0);
    }
  }
}
 
static void MaxNoAIsChange(int32_t)
{
  if (GetGameSettings().difficulty.max_no_competitors != 0 &&
      AI::GetInfoList()->empty() &&
      (!_networking || _network_server)) {
    ShowErrorMessage(GetEncodedString(STR_WARNING_NO_SUITABLE_AI), {}, WL_CRITICAL);
  }
 
  InvalidateWindowClassesData(WC_GAME_OPTIONS, 0);
}

static bool CheckRoadSide(int32_t &)
{
  return _game_mode == GM_MENU || !RoadVehiclesAreBuilt();
}

static std::optional<uint32_t> ConvertLandscape(std::string_view value)
{
  /* try with the old values */
  static constexpr std::initializer_list<std::string_view> _old_landscape_values{"normal"sv, "hilly"sv, "desert"sv, "candy"sv};
  return OneOfManySettingDesc::ParseSingleValue(value, _old_landscape_values);
}
 
static bool CheckFreeformEdges(int32_t &new_value)
{
  if (_game_mode == GM_MENU) return true;
  if (new_value != 0) {
    for (Ship *s : Ship::Iterate()) {
      /* Check if there is a ship on the northern border. */
      if (TileX(s->tile) == 0 || TileY(s->tile) == 0) {
        ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_EDGES_NOT_EMPTY), {}, WL_ERROR);
        return false;
      }
    }
    for (const BaseStation *st : BaseStation::Iterate()) {
      /* Check if there is a non-deleted buoy on the northern border. */
      if (st->IsInUse() && (TileX(st->xy) == 0 || TileY(st->xy) == 0)) {
        ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_EDGES_NOT_EMPTY), {}, WL_ERROR);
        return false;
      }
    }
  } else {
    for (uint i = 0; i < Map::MaxX(); i++) {
      if (TileHeight(TileXY(i, 1)) != 0) {
        ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_EDGES_NOT_WATER), {}, WL_ERROR);
        return false;
      }
    }
    for (uint i = 1; i < Map::MaxX(); i++) {
      if (!IsTileType(TileXY(i, Map::MaxY() - 1), TileType::Water) || TileHeight(TileXY(1, Map::MaxY())) != 0) {
        ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_EDGES_NOT_WATER), {}, WL_ERROR);
        return false;
      }
    }
    for (uint i = 0; i < Map::MaxY(); i++) {
      if (TileHeight(TileXY(1, i)) != 0) {
        ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_EDGES_NOT_WATER), {}, WL_ERROR);
        return false;
      }
    }
    for (uint i = 1; i < Map::MaxY(); i++) {
      if (!IsTileType(TileXY(Map::MaxX() - 1, i), TileType::Water) || TileHeight(TileXY(Map::MaxX(), i)) != 0) {
        ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_EDGES_NOT_WATER), {}, WL_ERROR);
        return false;
      }
    }
  }
  return true;
}
 
static void UpdateFreeformEdges(int32_t new_value)
{
  if (_game_mode == GM_MENU) return;
 
  if (new_value != 0) {
    for (uint x = 0; x < Map::SizeX(); x++) MakeVoid(TileXY(x, 0));
    for (uint y = 0; y < Map::SizeY(); y++) MakeVoid(TileXY(0, y));
  } else {
    /* Make tiles at the border water again. */
    for (uint i = 0; i < Map::MaxX(); i++) {
      SetTileHeight(TileXY(i, 0), 0);
      SetTileType(TileXY(i, 0), TileType::Water);
    }
    for (uint i = 0; i < Map::MaxY(); i++) {
      SetTileHeight(TileXY(0, i), 0);
      SetTileType(TileXY(0, i), TileType::Water);
    }
  }
  MarkWholeScreenDirty();
}

static bool CheckDynamicEngines([[maybe_unused]] int32_t &value)
{
  if (_game_mode == GM_MENU) return true;
 
  if (!EngineOverrideManager::ResetToCurrentNewGRFConfig()) {
    ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_DYNAMIC_ENGINES_EXISTING_VEHICLES), {}, WL_ERROR);
    return false;
  }
 
  return true;
}
 
static bool CheckMaxHeightLevel(int32_t &new_value)
{
  if (_game_mode == GM_NORMAL) return false;
  if (_game_mode != GM_EDITOR) return true;
 
  /* Check if at least one mountain on the map is higher than the new value.
   * If yes, disallow the change. */
  for (const auto t : Map::Iterate()) {
    if ((int32_t)TileHeight(t) > new_value) {
      ShowErrorMessage(GetEncodedString(STR_CONFIG_SETTING_TOO_HIGH_MOUNTAIN), {}, WL_ERROR);
      /* Return old, unchanged value */
      return false;
    }
  }
 
  return true;
}
 
static void StationCatchmentChanged(int32_t)
{
  Station::RecomputeCatchmentForAll();
  MarkWholeScreenDirty();
}
 
static void MaxVehiclesChanged(int32_t)
{
  InvalidateWindowClassesData(WC_BUILD_TOOLBAR);
  MarkWholeScreenDirty();
}

static bool ReplaceAsteriskWithEmptyPassword(std::string &newval)
{
  if (newval == "*") newval.clear();
  return true;
}

static void UpdateClientConfigValues()
{
  NetworkServerUpdateGameInfo();
 
  InvalidateWindowData(WC_CLIENT_LIST, 0);
 
  if (_network_server) {
    NetworkServerSendConfigUpdate();
  }
}

static void ChangeTimekeepingUnits()
{
  /* If service intervals are in time units (calendar days or real-world minutes), reset them to the correct defaults. */
  if (!_settings_client.company.vehicle.servint_ispercent) {
    UpdateAllServiceInterval(0);
  }
 
  /* If we are using calendar timekeeping, "minutes per year" must be default. */
  if (!TimerGameEconomy::UsingWallclockUnits(true)) {
    _settings_newgame.economy.minutes_per_calendar_year = CalendarTime::DEF_MINUTES_PER_YEAR;
  }
 
  InvalidateWindowClassesData(WC_GAME_OPTIONS, 0);
 
  /* It is possible to change these units in Scenario Editor. We must set the economy date appropriately. */
  if (_game_mode == GM_EDITOR) {
    TimerGameEconomy::Date new_economy_date;
    TimerGameEconomy::DateFract new_economy_date_fract;
 
    if (TimerGameEconomy::UsingWallclockUnits()) {
      /* If the new mode is wallclock units, set the economy year back to 1. */
      new_economy_date = TimerGameEconomy::ConvertYMDToDate(TimerGameEconomy::Year{1}, 0, 1);
      new_economy_date_fract = 0;
    } else {
      /* If the new mode is calendar units, sync the economy year with the calendar year. */
      new_economy_date = TimerGameEconomy::Date{TimerGameCalendar::date.base()};
      new_economy_date_fract = TimerGameCalendar::date_fract;
    }
 
    /* If you open a savegame as a scenario, there may already be link graphs and/or vehicles. These use economy date. */
    LinkGraphSchedule::instance.ShiftDates(new_economy_date - TimerGameEconomy::date);
    for (auto v : Vehicle::Iterate()) v->ShiftDates(new_economy_date - TimerGameEconomy::date);
 
    /* Only change the date after changing cached values above. */
    TimerGameEconomy::SetDate(new_economy_date, new_economy_date_fract);
  }
}

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 != TimekeepingUnits::Wallclock) {
      _settings_newgame.economy.timekeeping_units = TimekeepingUnits::Wallclock;
      ChangeTimekeepingUnits();
    }
  }
}
 
/* Get the valid range of the "minutes per calendar year" setting. */
static std::tuple<int32_t, uint32_t> GetMinutesPerYearRange(const IntSettingDesc &)
{
  /* Allow a non-default value only if using Wallclock timekeeping units. */
  if (TimerGameEconomy::UsingWallclockUnits(_game_mode == GM_MENU)) return { CalendarTime::FROZEN_MINUTES_PER_YEAR, CalendarTime::MAX_MINUTES_PER_YEAR };
 
  return { CalendarTime::DEF_MINUTES_PER_YEAR, CalendarTime::DEF_MINUTES_PER_YEAR };
}

static bool CanChangeTimetableMode(int32_t &)
{
  return !TimerGameEconomy::UsingWallclockUnits();
}
 
/* End - Callback Functions */