Add per-town override to disable town growth

src/lang/english.txt

@@ -4522,11 +4522,12 @@ STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_NEW_BUILDINGS                :{YELLOW}Fund th
 STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_EXCLUSIVE_TRANSPORT          :{YELLOW}Buy 1 year's exclusive transport rights in town.{}Town authority will not allow passengers and cargo to use your competitors' stations.{}Cost: {CURRENCY_LONG}
 STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_BRIBE                        :{YELLOW}Bribe the local authority to increase your rating, at the risk of a severe penalty if caught.{}Cost: {CURRENCY_LONG}
 
-###length 4
+###length 5
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_ALLOW_ROADS                :Allowed to build roads
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_ALLOW_LEVEL_CROSSINGS      :Allowed to build level crossings
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_TUNNELS                    :Allowed to build tunnels
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_MAX_ROAD_SLOPE             :Limit building continuous inclined roads
+STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_TOWN_GROWTH                :Town growth speed
 
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_DEFAULT                    :Default ({STRING1})
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_STR                        :{STRING}: {PUSH_COLOUR}{YELLOW}{STRING2}{POP_COLOUR}

src/lang/korean.txt

@@ -4525,7 +4525,7 @@ STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_NEW_BUILDINGS                :{PUSH_COLOUR}{Y
 STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_EXCLUSIVE_TRANSPORT          :{PUSH_COLOUR}{YELLOW}1년 간 수송 권한 독점권을 구입합니다.{}도시 당국은 오직 당신 회사의 역에만 승객과 화물을 실을 것입니다.{}{POP_COLOUR}가격: {CURRENCY_LONG}
 STR_LOCAL_AUTHORITY_ACTION_TOOLTIP_BRIBE                        :{PUSH_COLOUR}{YELLOW}성취도를 올리기 위해 처벌을 감수하고 지역 당국에 뇌물을 줍니다.{}{POP_COLOUR}가격: {CURRENCY_LONG}
 
-###length 4
+###length 5
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_ALLOW_ROADS                :도로 건설
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_ALLOW_LEVEL_CROSSINGS      :건널목 건설
 STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_TUNNELS                    :터널 건설

src/town.h

@@ -65,6 +65,7 @@ enum TownSettingOverrideFlags {
 	TSOF_OVERRIDE_BUILD_LEVEL_CROSSINGS     = 1,
 	TSOF_OVERRIDE_BUILD_TUNNELS             = 2,
 	TSOF_OVERRIDE_BUILD_INCLINED_ROADS      = 3,
+	TSOF_OVERRIDE_GROWTH                    = 4,
 };
 
 /** Town data structure. */
@@ -187,6 +188,11 @@ struct Town : TownPool::PoolItem<&_town_pool> {
 		return this->cached_name.c_str();
 	}
 
+	inline bool IsTownGrowthDisabledByOverride() const
+	{
+		return HasBit(this->override_flags, TSOF_OVERRIDE_GROWTH);
+	}
+
 	inline bool GetAllowBuildRoads() const
 	{
 		return HasBit(this->override_flags, TSOF_OVERRIDE_BUILD_ROADS) ? HasBit(this->override_values, TSOF_OVERRIDE_BUILD_ROADS) : _settings_game.economy.allow_town_roads;

src/town_cmd.cpp

@@ -3823,6 +3823,9 @@ CommandCost CmdOverrideTownSetting(TileIndex tile, DoCommandFlag flags, uint32 p
 	const bool is_override = HasBit(p2, 16);
 	const uint8 value = GB(p2, 8, 8);
 	switch (setting) {
+		case TSOF_OVERRIDE_GROWTH:
+			if (is_override && value != 0) return CMD_ERROR;
+			break;
 		case TSOF_OVERRIDE_BUILD_ROADS:
 		case TSOF_OVERRIDE_BUILD_LEVEL_CROSSINGS:
 			if (is_override && value != 0 && value != 1) return CMD_ERROR;
@@ -3841,6 +3844,8 @@ CommandCost CmdOverrideTownSetting(TileIndex tile, DoCommandFlag flags, uint32 p
 		SB(t->override_flags, setting, 1, is_override ? 1 : 0);
 		if (is_override) {
 			switch (setting) {
+				case TSOF_OVERRIDE_GROWTH:
+					break;
 				case TSOF_OVERRIDE_BUILD_ROADS:
 				case TSOF_OVERRIDE_BUILD_LEVEL_CROSSINGS:
 					SB(t->override_values, setting, 1, value & 1);
@@ -3856,6 +3861,7 @@ CommandCost CmdOverrideTownSetting(TileIndex tile, DoCommandFlag flags, uint32 p
 			}
 		}
 		SetWindowDirty(WC_TOWN_AUTHORITY, p1);
+		if (setting == TSOF_OVERRIDE_GROWTH) UpdateTownGrowth(t);
 	}
 
 	return CommandCost();
@@ -3938,7 +3944,7 @@ static void UpdateTownRating(Town *t)
  */
 static void UpdateTownGrowCounter(Town *t, uint16 prev_growth_rate)
 {
-	if (t->growth_rate == TOWN_GROWTH_RATE_NONE) return;
+	if (t->growth_rate == TOWN_GROWTH_RATE_NONE || t->IsTownGrowthDisabledByOverride()) return;
 	if (prev_growth_rate == TOWN_GROWTH_RATE_NONE) {
 		t->grow_counter = std::min<uint16>(t->growth_rate, t->grow_counter);
 		return;
@@ -4025,6 +4031,7 @@ static uint GetNormalGrowthRate(Town *t)
 static void UpdateTownGrowthRate(Town *t)
 {
 	if (HasBit(t->flags, TOWN_CUSTOM_GROWTH)) return;
+	if (t->IsTownGrowthDisabledByOverride()) return;
 	uint old_rate = t->growth_rate;
 	t->growth_rate = GetNormalGrowthRate(t);
 	UpdateTownGrowCounter(t, old_rate);
@@ -4047,6 +4054,8 @@ static void UpdateTownGrowth(Town *t)
 
 	ClrBit(t->flags, TOWN_IS_GROWING);
 
+	if (t->IsTownGrowthDisabledByOverride()) return;
+
 	if (_settings_game.economy.town_growth_rate == 0 && t->fund_buildings_months == 0) return;
 
 	if (t->fund_buildings_months == 0) {
@@ -4068,7 +4077,6 @@ static void UpdateTownGrowth(Town *t)
 
 	if (HasBit(t->flags, TOWN_CUSTOM_GROWTH)) {
 		if (t->growth_rate != TOWN_GROWTH_RATE_NONE) SetBit(t->flags, TOWN_IS_GROWING);
-		SetWindowDirty(WC_TOWN_VIEW, t->index);
 		return;
 	}
 

src/town_gui.cpp

@@ -113,7 +113,7 @@ private:
 				!(_local_company != COMPANY_SPECTATOR && _settings_game.difficulty.override_town_settings_in_multiplayer);
 	}
 
-	static const uint SETTING_OVERRIDE_COUNT = 4;
+	static const uint SETTING_OVERRIDE_COUNT = 5;
 
 public:
 	TownAuthorityWindow(WindowDesc *desc, WindowNumber window_number) : Window(desc), sel_index(-1), displayed_actions_on_previous_painting(0)
@@ -228,6 +228,9 @@ public:
 							SetDParam(0, STR_CONFIG_SETTING_TOWN_MAX_ROAD_SLOPE_VALUE + ((this->town->max_road_slope == 0) ? 1 : 0));
 							SetDParam(1, this->town->max_road_slope);
 							break;
+						case TSOF_OVERRIDE_GROWTH:
+							SetDParam(0, STR_CONFIG_SETTING_TOWN_GROWTH_NONE);
+							break;
 					}
 				}
 			}
@@ -255,6 +258,9 @@ public:
 							case TSOF_OVERRIDE_BUILD_INCLINED_ROADS:
 								SetDParam(1, STR_CONFIG_SETTING_TOWN_MAX_ROAD_SLOPE_HELPTEXT);
 								break;
+							case TSOF_OVERRIDE_GROWTH:
+								SetDParam(1, STR_CONFIG_SETTING_TOWN_GROWTH_HELPTEXT);
+								break;
 						}
 						text = STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_TEXT;
 						SetDParam(0, STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_ALLOW_ROADS + this->sel_index - 0x100);
@@ -314,6 +320,10 @@ public:
 								SetDParam(3, max_slope);
 								break;
 							}
+
+							case TSOF_OVERRIDE_GROWTH:
+								SetDParam(1, overriden ? STR_CONFIG_SETTING_TOWN_GROWTH_NONE : STR_COLOUR_DEFAULT);
+								break;
 						}
 						DrawString(ir.left, ir.right, y,
 								STR_LOCAL_AUTHORITY_SETTING_OVERRIDE_STR, tc);
@@ -423,7 +433,7 @@ public:
 						ShowDropDownMenu(this, names, HasBit(this->town->override_flags, idx) ? this->town->build_tunnels + 1 : 0, WID_TA_SETTING, 0, 0);
 						break;
 					}
-					case TSOF_OVERRIDE_BUILD_INCLINED_ROADS:
+					case TSOF_OVERRIDE_BUILD_INCLINED_ROADS: {
 						DropDownList dlist;
 						dlist.emplace_back(new DropDownListStringItem(STR_COLOUR_DEFAULT, 0, false));
 						dlist.emplace_back(new DropDownListStringItem(STR_CONFIG_SETTING_TOWN_MAX_ROAD_SLOPE_ZERO, 1, false));
@@ -434,6 +444,17 @@ public:
 						}
 						ShowDropDownList(this, std::move(dlist), HasBit(this->town->override_flags, idx) ? this->town->max_road_slope + 1 : 0, WID_TA_SETTING);
 						break;
+					}
+					case TSOF_OVERRIDE_GROWTH: {
+						int value = HasBit(this->town->override_flags, idx) ? 1 : 0;
+						const StringID names[] = {
+							STR_COLOUR_DEFAULT,
+							STR_CONFIG_SETTING_TOWN_GROWTH_NONE,
+							INVALID_STRING_ID
+						};
+						ShowDropDownMenu(this, names, value, WID_TA_SETTING, 0, 0);
+						break;
+					}
 				}
 				break;
 			}