Add setting to enable multiple churches/stadiums in scenario editor

See: #177

src/lang/english.txt

@@ -2001,6 +2001,9 @@ STR_CONFIG_OCCUPANCY_SMOOTHNESS_HELPTEXT                        :0% sets the mea
 STR_CONFIG_SETTING_ADVANCE_ORDER_ON_CLONE                       :Advance order after cloning/copying/sharing: {STRING2}
 STR_CONFIG_SETTING_ADVANCE_ORDER_ON_CLONE_HELPTEXT              :After cloning a vehicle or copying/sharing orders from an existing vehicle.{}For trains, road vehicles and ships: if the vehicle is in a depot which is in the order list, skip to the order which follows one of the orders for that depot.{}For aircraft: if the aircraft is in a hangar and the associated airport is in the order list, skip to one of the orders for that airport.
 
+STR_CONFIG_SETTING_SCENARIO_MULTIPLE_BUILDINGS                  :Allow multiple churches/stadiums: {STRING2}
+STR_CONFIG_SETTING_SCENARIO_MULTIPLE_BUILDINGS_HELPTEXT         :Allow manually adding churches and stadiums when there is already one present in the town.
+
 # Config errors
 STR_CONFIG_ERROR                                                :{WHITE}Error with the configuration file...
 STR_CONFIG_ERROR_ARRAY                                          :{WHITE}... error in array '{RAW_STRING}'

src/saveload/afterload.cpp

@@ -3773,6 +3773,13 @@ bool AfterLoadGame()
 		_settings_game.game_creation.generation_unique_id = _interactive_random.Next(UINT32_MAX-1) + 1; /* Generates between [1;UINT32_MAX] */
 	}
 
+	if (SlXvIsFeatureMissing(XSLFI_TOWN_MULTI_BUILDING)) {
+		for (Town *t : Town::Iterate()) {
+			t->church_count = HasBit(t->flags, 1) ? 1 : 0;
+			t->stadium_count = HasBit(t->flags, 2) ? 1 : 0;
+		}
+	}
+
 	/* This needs to be done after conversion. */
 	RebuildViewportKdtree();
 	ViewportMapBuildTunnelCache();

src/saveload/extended_ver_sl.cpp

@@ -124,6 +124,7 @@ const SlxiSubChunkInfo _sl_xv_sub_chunk_infos[] = {
 	{ XSLFI_STATION_GOODS_EXTRA,    XSCF_NULL,                1,   1, "station_goods_extra",       nullptr, nullptr, nullptr        },
 	{ XSLFI_DOCKING_CACHE_VER,      XSCF_IGNORABLE_ALL,       1,   1, "docking_cache_ver",         nullptr, nullptr, nullptr        },
 	{ XSLFI_EXTRA_CHEATS,           XSCF_NULL,                1,   1, "extra_cheats",              nullptr, nullptr, "CHTX"         },
+	{ XSLFI_TOWN_MULTI_BUILDING,    XSCF_NULL,                1,   1, "town_multi_building",       nullptr, nullptr, nullptr        },
 	{ XSLFI_NULL, XSCF_NULL, 0, 0, nullptr, nullptr, nullptr, nullptr },// This is the end marker
 };
 

src/saveload/extended_ver_sl.h

@@ -81,6 +81,7 @@ enum SlXvFeatureIndex {
 	XSLFI_STATION_GOODS_EXTRA,                    ///< Extra station goods entry statuses
 	XSLFI_DOCKING_CACHE_VER,                      ///< Multiple docks - docking tile cache version
 	XSLFI_EXTRA_CHEATS,                           ///< Extra cheats
+	XSLFI_TOWN_MULTI_BUILDING,                    ///< Allow multiple stadium/church buildings in a single town
 
 	XSLFI_RIFF_HEADER_60_BIT,                     ///< Size field in RIFF chunk header is 60 bit
 	XSLFI_HEIGHT_8_BIT,                           ///< Map tile height is 8 bit instead of 4 bit, but savegame version may be before this became true in trunk

src/saveload/town_sl.cpp

@@ -130,6 +130,7 @@ static const SaveLoad _town_desc[] = {
 	SLE_CONDSTR(Town, name,                  SLE_STR | SLF_ALLOW_CONTROL, 0, SLV_84, SL_MAX_VERSION),
 
 	    SLE_VAR(Town, flags,                 SLE_UINT8),
+	SLE_CONDVAR_X(Town, church_count,        SLE_UINT8, SL_MIN_VERSION, SL_MAX_VERSION, SlXvFeatureTest(XSLFTO_AND, XSLFI_SPRINGPP)),
 	SLE_CONDVAR(Town, statues,               SLE_FILE_U8  | SLE_VAR_U16, SL_MIN_VERSION, SLV_104),
 	SLE_CONDVAR(Town, statues,               SLE_UINT16,               SLV_104, SL_MAX_VERSION),
 

src/settings_gui.cpp

@@ -2011,6 +2011,7 @@ static SettingsContainer &GetSettingsTree()
 		if (_game_mode != GM_NORMAL) {
 			SettingsPage *scenario = main->Add(new SettingsPage(STR_CONFIG_SETTING_SCENARIO_EDITOR));
 			{
+				scenario->Add(new SettingEntry("scenario.multiple_buildings"));
 			}
 		}
 

src/settings_type.h

@@ -661,6 +661,7 @@ struct DebugSettings {
 
 /** Scenario editor settings. */
 struct ScenarioSettings {
+	bool multiple_buildings;                 ///< allow manually adding more than one church/stadium
 };
 
 /** All settings together for the game. */

src/table/settings.ini

@@ -5327,6 +5327,13 @@ str      = STR_CONFIG_SETTING_NEWS_GENERAL_INFORMATION
 strhelp  = STR_CONFIG_SETTING_NEWS_GENERAL_INFORMATION_HELPTEXT
 strval   = STR_CONFIG_SETTING_NEWS_MESSAGES_OFF
 
+[SDTC_BOOL]
+var      = scenario.multiple_buildings
+flags    = SLF_NOT_IN_SAVE | SLF_NO_NETWORK_SYNC
+def      = false
+str      = STR_CONFIG_SETTING_SCENARIO_MULTIPLE_BUILDINGS
+strhelp  = STR_CONFIG_SETTING_SCENARIO_MULTIPLE_BUILDINGS_HELPTEXT
+
 [SDTC_VAR]
 var      = gui.network_chat_box_width_pct
 type     = SLE_UINT16

src/town.h

@@ -65,6 +65,8 @@ struct Town : TownPool::PoolItem<&_town_pool> {
 	mutable std::string cached_name; ///< NOSAVE: Cache of the resolved name of the town, if not using a custom town name
 
 	byte flags;                    ///< See #TownFlags.
+	byte church_count;             ///< Number of church buildings in the town.
+	byte stadium_count;            ///< Number of stadium buildings in the town.
 
 	uint16 noise_reached;          ///< level of noise that all the airports are generating
 
@@ -209,8 +211,8 @@ enum TownDirectoryInvalidateWindowData {
  */
 enum TownFlags {
 	TOWN_IS_GROWING     = 0,   ///< Conditions for town growth are met. Grow according to Town::growth_rate.
-	TOWN_HAS_CHURCH     = 1,   ///< There can be only one church by town.
+//	TOWN_HAS_CHURCH     = 1,   ///< There can be only one church per town. Replaced by church_count.
-	TOWN_HAS_STADIUM    = 2,   ///< There can be only one stadium by town.
+//	TOWN_HAS_STADIUM    = 2,   ///< There can be only one stadium per town. Replaced by stadium_count.
 	TOWN_CUSTOM_GROWTH  = 3,   ///< Growth rate is controlled by GS.
 };
 

src/town_cmd.cpp

@@ -2605,7 +2605,7 @@ static TileIndex FindPlaceForTownHouseAroundTile(TileIndex tile, Town *t, HouseI
  * @param t the town
  * @return success if house can be built, error message otherwise
  */
-static CommandCost CheckCanBuildHouse(HouseID house, const Town *t)
+static CommandCost CheckCanBuildHouse(HouseID house, const Town *t, bool manual)
 {
 	const HouseSpec *hs = HouseSpec::Get(house);
 
@@ -2618,9 +2618,9 @@ static CommandCost CheckCanBuildHouse(HouseID house, const Town *t)
 
 	/* Special houses that there can be only one of. */
 	if (hs->building_flags & BUILDING_IS_CHURCH) {
-		if (HasBit(t->flags, TOWN_HAS_CHURCH)) return_cmd_error(STR_ERROR_ONLY_ONE_BUILDING_ALLOWED_PER_TOWN);
+		if (t->church_count >= ((manual && _settings_client.scenario.multiple_buildings) ? 255 : 1)) return_cmd_error(STR_ERROR_ONLY_ONE_BUILDING_ALLOWED_PER_TOWN);
 	} else if (hs->building_flags & BUILDING_IS_STADIUM) {
-		if (HasBit(t->flags, TOWN_HAS_STADIUM)) return_cmd_error(STR_ERROR_ONLY_ONE_BUILDING_ALLOWED_PER_TOWN);
+		if (t->stadium_count >= ((manual && _settings_client.scenario.multiple_buildings) ? 255 : 1)) return_cmd_error(STR_ERROR_ONLY_ONE_BUILDING_ALLOWED_PER_TOWN);
 	}
 
 	return CommandCost();
@@ -2642,9 +2642,9 @@ static void DoBuildHouse(Town *t, TileIndex tile, HouseID house, byte random_bit
 
 	/* Special houses that there can be only one of. */
 	if (hs->building_flags & BUILDING_IS_CHURCH) {
-		SetBit(t->flags, TOWN_HAS_CHURCH);
+		t->church_count++;
 	} else if (hs->building_flags & BUILDING_IS_STADIUM) {
-		SetBit(t->flags, TOWN_HAS_STADIUM);
+		t->stadium_count++;
 	}
 
 	byte construction_counter = 0;
@@ -2696,9 +2696,11 @@ CommandCost CmdBuildHouse(TileIndex tile, DoCommandFlag flags, uint32 p1, uint32
 	int max_z = GetTileMaxZ(tile);
 	bool above_snowline = (_settings_game.game_creation.landscape == LT_ARCTIC) && (max_z > HighestSnowLine());
 
+	bool manual = (_game_mode == GM_EDITOR);
+
 	CommandCost          ret = IsHouseTypeAllowed(house, above_snowline, TryGetTownRadiusGroup(t, tile));
 	if (ret.Succeeded()) ret = IsAnotherHouseTypeAllowedInTown(t, house);
-	if (ret.Succeeded()) ret = CheckCanBuildHouse(house, t);
+	if (ret.Succeeded()) ret = CheckCanBuildHouse(house, t, manual);
 	if (ret.Succeeded()) {
 		/* While placing a house manually, try only at exact position and ignore the layout */
 		const HouseSpec *hs = HouseSpec::Get(house);
@@ -2777,7 +2779,7 @@ static bool BuildTownHouse(Town *t, TileIndex tile)
 		houses[i] = houses[num];
 		probs[i] = probs[num];
 
-		CommandCost ret = CheckCanBuildHouse(house, t);
+		CommandCost ret = CheckCanBuildHouse(house, t, false);
 		if (ret.Failed()) continue;
 
 		tile = FindPlaceForTownHouseAroundTile(tile, t, house);
@@ -2858,9 +2860,9 @@ void ClearTownHouse(Town *t, TileIndex tile)
 
 	/* Clear flags for houses that only may exist once/town. */
 	if (hs->building_flags & BUILDING_IS_CHURCH) {
-		ClrBit(t->flags, TOWN_HAS_CHURCH);
+		t->church_count--;
 	} else if (hs->building_flags & BUILDING_IS_STADIUM) {
-		ClrBit(t->flags, TOWN_HAS_STADIUM);
+		t->stadium_count--;
 	}
 
 	/* Do the actual clearing of tiles */