Feature: Setting to automatically restart server based on hours played

src/network/network_server.cpp

@@ -33,6 +33,7 @@
 #include "../timer/timer.h"
 #include "../timer/timer_game_calendar.h"
 #include "../timer/timer_game_economy.h"
+#include "../timer/timer_game_realtime.h"
 #include <mutex>
 #include <condition_variable>
 
@@ -1491,29 +1492,6 @@ void NetworkUpdateClientInfo(ClientID client_id)
 	NetworkAdminClientUpdate(ci);
 }
 
-/** Check if we want to restart the map */
-static void NetworkCheckRestartMap()
-{
-	if (_settings_client.network.restart_game_year != 0 && TimerGameCalendar::year >= _settings_client.network.restart_game_year) {
-		Debug(net, 3, "Auto-restarting map: year {} reached", TimerGameCalendar::year);
-
-		_settings_newgame.game_creation.generation_seed = GENERATE_NEW_SEED;
-		switch(_file_to_saveload.abstract_ftype) {
-			case FT_SAVEGAME:
-			case FT_SCENARIO:
-				_switch_mode = SM_LOAD_GAME;
-				break;
-
-			case FT_HEIGHTMAP:
-				_switch_mode = SM_START_HEIGHTMAP;
-				break;
-
-			default:
-				_switch_mode = SM_NEWGAME;
-		}
-	}
-}
-
 /** Check if the server has autoclean_companies activated
  * Two things happen:
  *     1) If a company is not protected, it is closed after 1 year (for example)
@@ -1811,11 +1789,65 @@ void NetworkServer_Tick(bool send_frame)
 	}
 }
 
+/** Helper function to restart the map. */
+static void NetworkRestartMap()
+{
+	_settings_newgame.game_creation.generation_seed = GENERATE_NEW_SEED;
+	switch (_file_to_saveload.abstract_ftype) {
+		case FT_SAVEGAME:
+		case FT_SCENARIO:
+			_switch_mode = SM_LOAD_GAME;
+			break;
+
+		case FT_HEIGHTMAP:
+			_switch_mode = SM_START_HEIGHTMAP;
+			break;
+
+		default:
+			_switch_mode = SM_NEWGAME;
+	}
+}
+
+/** Timer to restart a network server automatically based on real-time hours played. Initialized at zero to disable until settings are loaded. */
+static IntervalTimer<TimerGameRealtime> _network_restart_map_timer({std::chrono::hours::zero(), TimerGameRealtime::UNPAUSED}, [](auto)
+{
+	if (!_network_server) return;
+
+	/* If setting is 0, this feature is disabled. */
+	if (_settings_client.network.restart_hours == 0) return;
+
+	Debug(net, 3, "Auto-restarting map: {} hours played", _settings_client.network.restart_hours);
+	NetworkRestartMap();
+});
+
+/**
+ * Reset the automatic network restart time interval.
+ * @param reset Whether to reset the timer to zero.
+ */
+void ChangeNetworkRestartTime(bool reset)
+{
+	if (!_network_server) return;
+
+	_network_restart_map_timer.SetInterval({ std::chrono::hours(_settings_client.network.restart_hours), TimerGameRealtime::UNPAUSED }, reset);
+}
+
+/** Check if we want to restart the map based on the year. */
+static void NetworkCheckRestartMapYear()
+{
+	/* If setting is 0, this feature is disabled. */
+	if (_settings_client.network.restart_game_year == 0) return;
+
+	if (TimerGameCalendar::year >= _settings_client.network.restart_game_year) {
+		Debug(net, 3, "Auto-restarting map: year {} reached", TimerGameCalendar::year);
+		NetworkRestartMap();
+	}
+}
+
 /** Calendar yearly "callback". Called whenever the calendar year changes. */
 static IntervalTimer<TimerGameCalendar> _calendar_network_yearly({ TimerGameCalendar::YEAR, TimerGameCalendar::Priority::NONE }, [](auto) {
 	if (!_network_server) return;
 
-	NetworkCheckRestartMap();
+	NetworkCheckRestartMapYear();
 });
 
 /** Economy yearly "callback". Called whenever the economy year changes. */

src/network/network_server.h

@@ -120,6 +120,7 @@ class ServerNetworkGameSocketHandler : public NetworkClientSocketPool::PoolItem<
 };
 
 void NetworkServer_Tick(bool send_frame);
+void ChangeNetworkRestartTime(bool reset);
 void NetworkServerSetCompanyPassword(CompanyID company_id, const std::string &password, bool already_hashed = true);
 void NetworkServerUpdateCompanyPassworded(CompanyID company_id, bool passworded);
 

src/openttd.cpp

@@ -34,6 +34,7 @@
 #include "console_func.h"
 #include "screenshot.h"
 #include "network/network.h"
+#include "network/network_server.h"
 #include "network/network_func.h"
 #include "ai/ai.hpp"
 #include "ai/ai_config.hpp"
@@ -917,7 +918,11 @@ static void MakeNewGameDone()
 	CheckIndustries();
 	MarkWholeScreenDirty();
 
-	if (_network_server && !_network_dedicated) ShowClientList();
+	if (_network_server) {
+		ChangeNetworkRestartTime(true);
+
+		if (!_network_dedicated) ShowClientList();
+	}
 }
 
 static void MakeNewGame(bool from_heightmap, bool reset_settings)

src/settings_type.h

@@ -325,6 +325,7 @@ struct NetworkSettings {
 	uint8_t       max_companies;                            ///< maximum amount of companies
 	uint8_t       max_clients;                              ///< maximum amount of clients
 	TimerGameCalendar::Year restart_game_year;            ///< year the server restarts
+	uint16_t      restart_hours;                          ///< number of hours to run the server before automatic restart
 	uint8_t       min_active_clients;                       ///< minimum amount of active clients to unpause the game
 	bool        reload_cfg;                               ///< reload the config file before restarting
 	std::string last_joined;                              ///< Last joined server

src/table/settings/network_settings.ini

@@ -8,6 +8,7 @@
 
 [pre-amble]
 static void UpdateClientConfigValues();
+void ChangeNetworkRestartTime(bool reset);
 
 static constexpr std::initializer_list<const char*> _server_game_type{"local", "public", "invite-only"};
 
@@ -241,6 +242,16 @@ min      = CalendarTime::MIN_YEAR
 max      = CalendarTime::MAX_YEAR
 interval = 1
 
+[SDTC_VAR]
+var      = network.restart_hours
+type     = SLE_UINT16
+flags    = SF_NOT_IN_SAVE | SF_NO_NETWORK_SYNC | SF_GUI_0_IS_SPECIAL | SF_NETWORK_ONLY
+def      = 0
+min      = 0
+max      = UINT16_MAX
+interval = 1
+post_cb  = [](auto) { ChangeNetworkRestartTime(false); }
+
 [SDTC_VAR]
 var      = network.min_active_clients
 type     = SLE_UINT8