Merge 3c56c0fe2e into 67e56391c7

`AirportMovingDataFlag` was changed to use `enum class` naming style, but wasn't actually changed to be `enum class`.

src/airport.h

@@ -44,7 +44,7 @@ enum AirportTypes : uint8_t {
 };
 
 /** Flags for airport movement data. */
-enum AirportMovingDataFlag : uint8_t {
+enum class AirportMovingDataFlag : uint8_t {
 	NoSpeedClamp, ///< No speed restrictions.
 	Takeoff, ///< Takeoff movement.
 	SlowTurn, ///< Turn slowly (mostly used in the air).

src/game/game_gui.cpp

@@ -325,7 +325,7 @@ struct GSConfigWindow : public Window {
 					}
 				} else if (!bool_item && !config_item.complete_labels) {
 					/* Display a query box so users can enter a custom value. */
-					ShowQueryString(GetString(STR_JUST_INT, old_val), STR_CONFIG_SETTING_QUERY_CAPTION, INT32_DIGITS_WITH_SIGN_AND_TERMINATION, this, CS_NUMERAL_SIGNED, {});
+					ShowQueryString(GetString(STR_JUST_INT, old_val), STR_CONFIG_SETTING_QUERY_CAPTION, INT32_DIGITS_WITH_SIGN_AND_TERMINATION, this, CS_NUMERAL_SIGNED, QueryStringFlag::EnableDefault);
 				}
 				this->SetDirty();
 				break;
@@ -347,10 +347,17 @@ struct GSConfigWindow : public Window {
 
 	void OnQueryTextFinished(std::optional<std::string> str) override
 	{
+		/* The user pressed cancel */
 		if (!str.has_value()) return;
-		auto value = ParseInteger<int32_t>(*str, 10, true);
+
-		if (!value.has_value()) return;
+		if (!str->empty()) {
-		this->SetValue(*value);
+			auto value = ParseInteger<int32_t>(*str, 10, true);
+			if (!value.has_value()) return;
+
+			this->SetValue(*value);
+		} else {
+			this->SetDefaultValue();
+		}
 	}
 
 	void OnDropdownSelect(WidgetID widget, int index, int) override
@@ -419,6 +426,14 @@ private:
 		this->gs_config->SetSetting(config_item.name, value);
 		this->SetDirty();
 	}
+
+	void SetDefaultValue()
+	{
+		const ScriptConfigItem &config_item = *this->visible_settings[this->clicked_row];
+		if (_game_mode == GM_NORMAL && !config_item.flags.Test(ScriptConfigFlag::InGame)) return;
+		this->gs_config->ResetSetting(config_item.name);
+		this->SetDirty();
+	}
 };
 
 /** Open the GS config window. */

src/lang/english.txt

@@ -5001,6 +5001,7 @@ STR_ERROR_FLAT_LAND_REQUIRED                                    :{WHITE}Flat lan
 STR_ERROR_LAND_SLOPED_IN_WRONG_DIRECTION                        :{WHITE}Land sloped in wrong direction
 STR_ERROR_CAN_T_DO_THIS                                         :{WHITE}Can't do this...
 STR_ERROR_BUILDING_MUST_BE_DEMOLISHED                           :{WHITE}Building must be demolished first
+STR_ERROR_BUILDING_IS_PROTECTED                                 :{WHITE}... building is protected
 STR_ERROR_CAN_T_CLEAR_THIS_AREA                                 :{WHITE}Can't clear this area...
 STR_ERROR_SITE_UNSUITABLE                                       :{WHITE}... site unsuitable
 STR_ERROR_ALREADY_BUILT                                         :{WHITE}... already built

src/script/script_config.cpp

@@ -106,6 +106,16 @@ void ScriptConfig::ResetSettings()
 	this->settings.clear();
 }
 
+void ScriptConfig::ResetSetting(std::string_view name)
+{
+	if (this->info == nullptr) return;
+
+	const ScriptConfigItem *config_item = this->info->GetConfigItem(name);
+	if (config_item == nullptr) return;
+
+	this->settings.erase(std::string{name});
+}
+
 void ScriptConfig::ResetEditableSettings(bool yet_to_start)
 {
 	if (this->info == nullptr) return ResetSettings();

src/script/script_config.hpp

@@ -129,6 +129,11 @@ public:
 	 */
 	void ResetSettings();
 
+	/**
+	 * Reset a setting to its default value.
+	 */
+	void ResetSetting(std::string_view name);
+
 	/**
 	 * Reset only editable and visible settings to their default value.
 	 */

src/script/script_gui.cpp

@@ -470,7 +470,7 @@ struct ScriptSettingsWindow : public Window {
 					}
 				} else if (!bool_item && !config_item.complete_labels) {
 					/* Display a query box so users can enter a custom value. */
-					ShowQueryString(GetString(STR_JUST_INT, old_val), STR_CONFIG_SETTING_QUERY_CAPTION, INT32_DIGITS_WITH_SIGN_AND_TERMINATION, this, CS_NUMERAL_SIGNED, {});
+					ShowQueryString(GetString(STR_JUST_INT, old_val), STR_CONFIG_SETTING_QUERY_CAPTION, INT32_DIGITS_WITH_SIGN_AND_TERMINATION, this, CS_NUMERAL_SIGNED, QueryStringFlag::EnableDefault);
 				}
 				this->SetDirty();
 				break;
@@ -485,10 +485,17 @@ struct ScriptSettingsWindow : public Window {
 
 	void OnQueryTextFinished(std::optional<std::string> str) override
 	{
+		/* The user pressed cancel */
 		if (!str.has_value()) return;
-		auto value = ParseInteger<int32_t>(*str, 10, true);
+
-		if (!value.has_value()) return;
+		if (!str->empty()) {
-		this->SetValue(*value);
+			auto value = ParseInteger<int32_t>(*str, 10, true);
+			if (!value.has_value()) return;
+
+			this->SetValue(*value);
+		} else {
+			this->SetDefaultValue();
+		}
 	}
 
 	void OnDropdownSelect(WidgetID widget, int index, int) override
@@ -552,6 +559,14 @@ private:
 		this->script_config->SetSetting(config_item.name, value);
 		this->SetDirty();
 	}
+
+	void SetDefaultValue()
+	{
+		const ScriptConfigItem &config_item = *this->visible_settings[this->clicked_row];
+		if (_game_mode == GM_NORMAL && ((this->slot == OWNER_DEITY) || Company::IsValidID(this->slot)) && !config_item.flags.Test(ScriptConfigFlag::InGame)) return;
+		this->script_config->ResetSetting(config_item.name);
+		this->SetDirty();
+	}
 };
 
 /** Widgets for the Script settings window. */

src/string.cpp

@@ -607,28 +607,25 @@ bool ConvertHexToBytes(std::string_view hex, std::span<uint8_t> bytes)
 /** String iterator using ICU as a backend. */
 class IcuStringIterator : public StringIterator
 {
-	icu::BreakIterator *char_itr; ///< ICU iterator for characters.
+	std::unique_ptr<icu::BreakIterator> char_itr; ///< ICU iterator for characters.
-	icu::BreakIterator *word_itr; ///< ICU iterator for words.
+	std::unique_ptr<icu::BreakIterator> word_itr; ///< ICU iterator for words.
 
 	std::vector<UChar> utf16_str;      ///< UTF-16 copy of the string.
 	std::vector<size_t> utf16_to_utf8; ///< Mapping from UTF-16 code point position to index in the UTF-8 source string.
 
 public:
-	IcuStringIterator() : char_itr(nullptr), word_itr(nullptr)
+	IcuStringIterator()
 	{
 		UErrorCode status = U_ZERO_ERROR;
-		this->char_itr = icu::BreakIterator::createCharacterInstance(icu::Locale(_current_language != nullptr ? _current_language->isocode : "en"), status);
+		auto locale = icu::Locale(_current_language != nullptr ? _current_language->isocode : "en");
-		this->word_itr = icu::BreakIterator::createWordInstance(icu::Locale(_current_language != nullptr ? _current_language->isocode : "en"), status);
+		this->char_itr.reset(icu::BreakIterator::createCharacterInstance(locale, status));
+		this->word_itr.reset(icu::BreakIterator::createWordInstance(locale, status));
 
 		this->utf16_str.push_back('\0');
 		this->utf16_to_utf8.push_back(0);
 	}
 
-	~IcuStringIterator() override
+	~IcuStringIterator() override = default;
-	{
-		delete this->char_itr;
-		delete this->word_itr;
-	}
 
 	void SetString(std::string_view s) override
 	{

src/town_cmd.cpp

@@ -710,7 +710,7 @@ static void TileLoop_Town(TileIndex tile)
 static CommandCost ClearTile_Town(TileIndex tile, DoCommandFlags flags)
 {
 	if (flags.Test(DoCommandFlag::Auto)) return CommandCost(STR_ERROR_BUILDING_MUST_BE_DEMOLISHED);
-	if (!CanDeleteHouse(tile)) return CMD_ERROR;
+	if (!CanDeleteHouse(tile)) return CommandCost(STR_ERROR_BUILDING_IS_PROTECTED);
 
 	const HouseSpec *hs = HouseSpec::Get(GetHouseType(tile));
 
@@ -724,7 +724,7 @@ static CommandCost ClearTile_Town(TileIndex tile, DoCommandFlags flags)
 		if (!_cheats.magic_bulldozer.value && !flags.Test(DoCommandFlag::NoTestTownRating)) {
 			/* NewGRFs can add indestructible houses. */
 			if (rating > RATING_MAXIMUM) {
-				return CommandCost(CMD_ERROR);
+				return CommandCost(STR_ERROR_BUILDING_IS_PROTECTED);
 			}
 			/* If town authority controls removal, check the company's rating. */
 			if (rating > t->ratings[_current_company] && _settings_game.difficulty.town_council_tolerance != TOWN_COUNCIL_PERMISSIVE) {