Merge cd5d13a692 into 9ce2aca949

The mask was treated as a single RoadStopDrawMode instead of a RoadStopDrawModes bitset.

src/fontcache/spritefontcache.cpp

@@ -103,14 +103,14 @@ void SpriteFontCache::ClearFontCache()
 
 const Sprite *SpriteFontCache::GetGlyph(GlyphID key)
 {
-	SpriteID sprite = this->GetUnicodeGlyph(static_cast<char32_t>(key & ~SPRITE_GLYPH));
+	SpriteID sprite = static_cast<SpriteID>(key & ~SPRITE_GLYPH);
 	if (sprite == 0) sprite = this->GetUnicodeGlyph('?');
 	return GetSprite(sprite, SpriteType::Font);
 }
 
 uint SpriteFontCache::GetGlyphWidth(GlyphID key)
 {
-	SpriteID sprite = this->GetUnicodeGlyph(static_cast<char32_t>(key & ~SPRITE_GLYPH));
+	SpriteID sprite = static_cast<SpriteID>(key & ~SPRITE_GLYPH);
 	if (sprite == 0) sprite = this->GetUnicodeGlyph('?');
 	return SpriteExists(sprite) ? GetSprite(sprite, SpriteType::Font)->width + ScaleFontTrad(this->fs != FS_NORMAL ? 1 : 0) : 0;
 }
@@ -120,7 +120,7 @@ GlyphID SpriteFontCache::MapCharToGlyph(char32_t key, [[maybe_unused]] bool allo
 	assert(IsPrintable(key));
 	SpriteID sprite = this->GetUnicodeGlyph(key);
 	if (sprite == 0) return 0;
-	return SPRITE_GLYPH | key;
+	return SPRITE_GLYPH | sprite;
 }
 
 bool SpriteFontCache::GetDrawGlyphShadow()

src/genworld.h

@@ -49,6 +49,8 @@ static const uint CUSTOM_SEA_LEVEL_NUMBER_DIFFICULTY = 4; ///< Value for custom
 static const uint CUSTOM_SEA_LEVEL_MIN_PERCENTAGE = 1;    ///< Minimum percentage a user can specify for custom sea level.
 static const uint CUSTOM_SEA_LEVEL_MAX_PERCENTAGE = 90;   ///< Maximum percentage a user can specify for custom sea level.
 
+static const uint CUSTOM_SNOW_LEVEL_NUMBER = 5; ///< Value for custom snow level in game creation settings
+
 static constexpr uint MAP_HEIGHT_LIMIT_ORIGINAL = 15; ///< Original map height limit.
 
 static const uint MAP_HEIGHT_LIMIT_AUTO_MINIMUM = 30; ///< When map height limit is auto, make this the lowest possible map height limit.

src/genworld_gui.cpp

@@ -124,7 +124,7 @@ static constexpr NWidgetPart _nested_generate_landscape_widgets[] = {
 					/* Labels on the left side (global column 3). */
 					NWidget(NWID_VERTICAL, NWidContainerFlag::EqualSize), SetPIP(0, WidgetDimensions::unscaled.vsep_sparse, 0),
 						NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_LABEL),
-							NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_SNOW_COVERAGE, STR_CONFIG_SETTING_SNOW_COVERAGE_HELPTEXT), SetFill(1, 1),
+							NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_SNOW_LINE_LEVEL, STR_CONFIG_SETTING_SNOW_LINE_LEVEL_HELPTEXT), SetFill(1, 1),
 							NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_DESERT_COVERAGE, STR_CONFIG_SETTING_DESERT_COVERAGE_HELPTEXT), SetFill(1, 1),
 							NWidget(NWID_SPACER), SetFill(1, 1),
 						EndContainer(),
@@ -139,11 +139,9 @@ static constexpr NWidgetPart _nested_generate_landscape_widgets[] = {
 					NWidget(NWID_VERTICAL, NWidContainerFlag::EqualSize), SetPIP(0, WidgetDimensions::unscaled.vsep_sparse, 0),
 						/* Climate selector. */
 						NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_SELECTOR),
-							/* Snow coverage. */
+							/* Snow line level. */
 							NWidget(NWID_HORIZONTAL),
-								NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_DOWN), SetSpriteTip(SPR_ARROW_DOWN, STR_MAPGEN_SNOW_COVERAGE_DOWN_TOOLTIP), SetFill(0, 1), SetAspect(WidgetDimensions::ASPECT_UP_DOWN_BUTTON),
-								NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_TEXT), SetToolTip(STR_CONFIG_SETTING_SNOW_COVERAGE_HELPTEXT), SetFill(1, 1),
-								NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_UP), SetSpriteTip(SPR_ARROW_UP, STR_MAPGEN_SNOW_COVERAGE_UP_TOOLTIP), SetFill(0, 1), SetAspect(WidgetDimensions::ASPECT_UP_DOWN_BUTTON),
+								NWidget(WWT_DROPDOWN, COLOUR_ORANGE, WID_GL_SNOW_LINE_LEVEL_PULLDOWN), SetToolTip(STR_CONFIG_SETTING_SNOW_LINE_LEVEL_HELPTEXT), SetFill(1, 1),
 							EndContainer(),
 							/* Desert coverage. */
 							NWidget(NWID_HORIZONTAL),
@@ -259,7 +257,7 @@ static constexpr NWidgetPart _nested_heightmap_load_widgets[] = {
 					/* Right half labels (global column 3) */
 					NWidget(NWID_VERTICAL, NWidContainerFlag::EqualSize), SetPIP(0, WidgetDimensions::unscaled.vsep_sparse, 0),
 						NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_LABEL),
-							NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_SNOW_COVERAGE, STR_CONFIG_SETTING_SNOW_COVERAGE_HELPTEXT), SetFill(1, 1),
+							NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_SNOW_LINE_LEVEL, STR_CONFIG_SETTING_SNOW_LINE_LEVEL_HELPTEXT), SetFill(1, 1),
 							NWidget(WWT_TEXT, INVALID_COLOUR), SetStringTip(STR_MAPGEN_DESERT_COVERAGE, STR_CONFIG_SETTING_DESERT_COVERAGE_HELPTEXT), SetFill(1, 1),
 							NWidget(NWID_SPACER), SetFill(1, 1),
 						EndContainer(),
@@ -273,11 +271,9 @@ static constexpr NWidgetPart _nested_heightmap_load_widgets[] = {
 					NWidget(NWID_VERTICAL, NWidContainerFlag::EqualSize), SetPIP(0, WidgetDimensions::unscaled.vsep_sparse, 0),
 						/* Climate selector. */
 						NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_SELECTOR),
-							/* Snow coverage. */
+							/* Snow line level. */
 							NWidget(NWID_HORIZONTAL),
-								NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_DOWN), SetSpriteTip(SPR_ARROW_DOWN, STR_MAPGEN_SNOW_COVERAGE_DOWN_TOOLTIP), SetFill(0, 1), SetAspect(WidgetDimensions::ASPECT_UP_DOWN_BUTTON),
-								NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_TEXT), SetToolTip(STR_CONFIG_SETTING_SNOW_COVERAGE_HELPTEXT), SetFill(1, 1),
-								NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_UP), SetSpriteTip(SPR_ARROW_UP, STR_MAPGEN_SNOW_COVERAGE_UP_TOOLTIP), SetFill(0, 1), SetAspect(WidgetDimensions::ASPECT_UP_DOWN_BUTTON),
+								NWidget(WWT_DROPDOWN, COLOUR_ORANGE, WID_GL_SNOW_LINE_LEVEL_PULLDOWN), SetToolTip(STR_CONFIG_SETTING_SNOW_LINE_LEVEL_HELPTEXT), SetFill(1, 1),
 							EndContainer(),
 							/* Desert coverage. */
 							NWidget(NWID_HORIZONTAL),
@@ -384,6 +380,7 @@ static const StringID _rotation[]    = {STR_CONFIG_SETTING_HEIGHTMAP_ROTATION_CO
 static const StringID _num_towns[]   = {STR_NUM_VERY_LOW, STR_NUM_LOW, STR_NUM_NORMAL, STR_NUM_HIGH, STR_NUM_CUSTOM};
 static const StringID _num_inds[]    = {STR_FUNDING_ONLY, STR_MINIMAL, STR_NUM_VERY_LOW, STR_NUM_LOW, STR_NUM_NORMAL, STR_NUM_HIGH, STR_NUM_CUSTOM};
 static const StringID _variety[]     = {STR_VARIETY_NONE, STR_VARIETY_VERY_LOW, STR_VARIETY_LOW, STR_VARIETY_MEDIUM, STR_VARIETY_HIGH, STR_VARIETY_VERY_HIGH};
+static const StringID _snow_levels[] = {STR_SNOW_LINE_LEVEL_VERY_LOW, STR_SNOW_LINE_LEVEL_LOW, STR_SNOW_LINE_LEVEL_MEDIUM, STR_SNOW_LINE_LEVEL_HIGH, STR_SNOW_LINE_LEVEL_VERY_HIGH, STR_SNOW_LINE_LEVEL_CUSTOM};
 
 static_assert(std::size(_num_inds) == ID_END);
 
@@ -426,7 +423,12 @@ struct GenerateLandscapeWindow : public Window {
 			case WID_GL_MAPSIZE_X_PULLDOWN:   return GetString(STR_JUST_INT, 1LL << _settings_newgame.game_creation.map_x);
 			case WID_GL_MAPSIZE_Y_PULLDOWN:   return GetString(STR_JUST_INT, 1LL << _settings_newgame.game_creation.map_y);
 			case WID_GL_HEIGHTMAP_HEIGHT_TEXT: return GetString(STR_JUST_INT, _settings_newgame.game_creation.heightmap_height);
-			case WID_GL_SNOW_COVERAGE_TEXT:   return GetString(STR_MAPGEN_SNOW_COVERAGE_TEXT, _settings_newgame.game_creation.snow_coverage);
+			case WID_GL_SNOW_LINE_LEVEL_PULLDOWN:
+				if (_settings_newgame.game_creation.snow_line_level == CUSTOM_SNOW_LEVEL_NUMBER) {
+					return GetString(STR_SNOW_LINE_LEVEL_CUSTOM_NUMBER, _settings_newgame.game_creation.snow_line_height);
+				}
+				return GetString(_snow_levels[_settings_newgame.game_creation.snow_line_level]);
+
 			case WID_GL_DESERT_COVERAGE_TEXT: return GetString(STR_MAPGEN_DESERT_COVERAGE_TEXT, _settings_newgame.game_creation.desert_coverage);
 
 			case WID_GL_TOWN_PULLDOWN:
@@ -523,7 +525,7 @@ struct GenerateLandscapeWindow : public Window {
 		}
 
 		/* Disable snowline if not arctic */
-		this->SetWidgetDisabledState(WID_GL_SNOW_COVERAGE_TEXT, _settings_newgame.game_creation.landscape != LandscapeType::Arctic);
+		this->SetWidgetDisabledState(WID_GL_SNOW_LINE_LEVEL_PULLDOWN, _settings_newgame.game_creation.landscape != LandscapeType::Arctic);
 		/* Disable desert if not tropic */
 		this->SetWidgetDisabledState(WID_GL_DESERT_COVERAGE_TEXT, _settings_newgame.game_creation.landscape != LandscapeType::Tropic);
 
@@ -545,8 +547,6 @@ struct GenerateLandscapeWindow : public Window {
 		}
 		this->SetWidgetDisabledState(WID_GL_START_DATE_DOWN, _settings_newgame.game_creation.starting_year <= CalendarTime::MIN_YEAR);
 		this->SetWidgetDisabledState(WID_GL_START_DATE_UP,   _settings_newgame.game_creation.starting_year >= CalendarTime::MAX_YEAR);
-		this->SetWidgetDisabledState(WID_GL_SNOW_COVERAGE_DOWN, _settings_newgame.game_creation.snow_coverage <= 0 || _settings_newgame.game_creation.landscape != LandscapeType::Arctic);
-		this->SetWidgetDisabledState(WID_GL_SNOW_COVERAGE_UP,   _settings_newgame.game_creation.snow_coverage >= 100 || _settings_newgame.game_creation.landscape != LandscapeType::Arctic);
 		this->SetWidgetDisabledState(WID_GL_DESERT_COVERAGE_DOWN, _settings_newgame.game_creation.desert_coverage <= 0 || _settings_newgame.game_creation.landscape != LandscapeType::Tropic);
 		this->SetWidgetDisabledState(WID_GL_DESERT_COVERAGE_UP,   _settings_newgame.game_creation.desert_coverage >= 100 || _settings_newgame.game_creation.landscape != LandscapeType::Tropic);
 
@@ -586,8 +586,8 @@ struct GenerateLandscapeWindow : public Window {
 				d = GetStringBoundingBox(GetString(STR_JUST_INT, GetParamMaxValue(MAX_MAP_SIZE)));
 				break;
 
-			case WID_GL_SNOW_COVERAGE_TEXT:
-				d = GetStringBoundingBox(GetString(STR_MAPGEN_SNOW_COVERAGE_TEXT, GetParamMaxValue(MAX_TILE_HEIGHT)));
+			case WID_GL_SNOW_LINE_LEVEL_PULLDOWN:
+				d = GetStringBoundingBox(GetString(STR_JUST_INT, GetParamMaxValue(MAX_SNOWLINE_HEIGHT)));
 				break;
 
 			case WID_GL_DESERT_COVERAGE_TEXT:
@@ -738,21 +738,8 @@ struct GenerateLandscapeWindow : public Window {
 				ShowQueryString(GetString(STR_JUST_INT, _settings_newgame.game_creation.starting_year), STR_MAPGEN_START_DATE_QUERY_CAPT, 8, this, CS_NUMERAL, QueryStringFlag::EnableDefault);
 				break;
 
-			case WID_GL_SNOW_COVERAGE_DOWN:
-			case WID_GL_SNOW_COVERAGE_UP: // Snow coverage buttons
-				/* Don't allow too fast scrolling */
-				if (!this->flags.Test(WindowFlag::Timeout) || this->timeout_timer <= 1) {
-					this->HandleButtonClick(widget);
-
-					_settings_newgame.game_creation.snow_coverage = Clamp(_settings_newgame.game_creation.snow_coverage + (widget - WID_GL_SNOW_COVERAGE_TEXT) * 10, 0, 100);
-					this->InvalidateData();
-				}
-				_left_button_clicked = false;
-				break;
-
-			case WID_GL_SNOW_COVERAGE_TEXT: // Snow coverage text
-				this->widget_id = WID_GL_SNOW_COVERAGE_TEXT;
-				ShowQueryString(GetString(STR_JUST_INT, _settings_newgame.game_creation.snow_coverage), STR_MAPGEN_SNOW_COVERAGE_QUERY_CAPT, 4, this, CS_NUMERAL, QueryStringFlag::EnableDefault);
+			case WID_GL_SNOW_LINE_LEVEL_PULLDOWN: // Snow line level
+				ShowDropDownMenu(this, _snow_levels, _settings_newgame.game_creation.snow_line_level, WID_GL_SNOW_LINE_LEVEL_PULLDOWN, 0, 0);
 				break;
 
 			case WID_GL_DESERT_COVERAGE_DOWN:
@@ -846,9 +833,9 @@ struct GenerateLandscapeWindow : public Window {
 	void OnTimeout() override
 	{
 		if (mode == GLWM_HEIGHTMAP) {
-			this->RaiseWidgetsWhenLowered(WID_GL_HEIGHTMAP_HEIGHT_DOWN, WID_GL_HEIGHTMAP_HEIGHT_UP, WID_GL_START_DATE_DOWN, WID_GL_START_DATE_UP, WID_GL_SNOW_COVERAGE_UP, WID_GL_SNOW_COVERAGE_DOWN, WID_GL_DESERT_COVERAGE_UP, WID_GL_DESERT_COVERAGE_DOWN);
+			this->RaiseWidgetsWhenLowered(WID_GL_HEIGHTMAP_HEIGHT_DOWN, WID_GL_HEIGHTMAP_HEIGHT_UP, WID_GL_START_DATE_DOWN, WID_GL_START_DATE_UP, WID_GL_DESERT_COVERAGE_UP, WID_GL_DESERT_COVERAGE_DOWN);
 		} else {
-			this->RaiseWidgetsWhenLowered(WID_GL_START_DATE_DOWN, WID_GL_START_DATE_UP, WID_GL_SNOW_COVERAGE_UP, WID_GL_SNOW_COVERAGE_DOWN, WID_GL_DESERT_COVERAGE_UP, WID_GL_DESERT_COVERAGE_DOWN);
+			this->RaiseWidgetsWhenLowered(WID_GL_START_DATE_DOWN, WID_GL_START_DATE_UP, WID_GL_DESERT_COVERAGE_UP, WID_GL_DESERT_COVERAGE_DOWN);
 		}
 	}
 
@@ -863,6 +850,14 @@ struct GenerateLandscapeWindow : public Window {
 
 			case WID_GL_HEIGHTMAP_ROTATION_PULLDOWN: _settings_newgame.game_creation.heightmap_rotation = index; break;
 
+			case WID_GL_SNOW_LINE_LEVEL_PULLDOWN: // Snow line level
+				if ((uint)index == CUSTOM_SNOW_LEVEL_NUMBER) {
+					this->widget_id = widget;
+					ShowQueryString(GetString(STR_JUST_INT, _settings_newgame.game_creation.snow_line_height), STR_MAPGEN_SNOW_LINE_LEVEL_QUERY_CAPT, 4, this, CS_NUMERAL, {});
+				}
+				_settings_newgame.game_creation.snow_line_level = index;
+				break;
+
 			case WID_GL_TOWN_PULLDOWN:
 				if ((uint)index == CUSTOM_TOWN_NUMBER_DIFFICULTY) {
 					this->widget_id = widget;
@@ -922,7 +917,7 @@ struct GenerateLandscapeWindow : public Window {
 			switch (this->widget_id) {
 				case WID_GL_HEIGHTMAP_HEIGHT_TEXT: value = MAP_HEIGHT_LIMIT_AUTO_MINIMUM; break;
 				case WID_GL_START_DATE_TEXT: value = CalendarTime::DEF_START_YEAR.base(); break;
-				case WID_GL_SNOW_COVERAGE_TEXT: value = DEF_SNOW_COVERAGE; break;
+				case WID_GL_SNOW_LINE_LEVEL_PULLDOWN: value = DEF_SNOWLINE_HEIGHT; break;
 				case WID_GL_DESERT_COVERAGE_TEXT: value = DEF_DESERT_COVERAGE; break;
 				case WID_GL_TOWN_PULLDOWN: value = 1; break;
 				case WID_GL_INDUSTRY_PULLDOWN: value = 1; break;
@@ -943,9 +938,8 @@ struct GenerateLandscapeWindow : public Window {
 				_settings_newgame.game_creation.starting_year = Clamp(TimerGameCalendar::Year(value), CalendarTime::MIN_YEAR, CalendarTime::MAX_YEAR);
 				break;
 
-			case WID_GL_SNOW_COVERAGE_TEXT:
-				this->SetWidgetDirty(WID_GL_SNOW_COVERAGE_TEXT);
-				_settings_newgame.game_creation.snow_coverage = Clamp(value, 0, 100);
+			case WID_GL_SNOW_LINE_LEVEL_PULLDOWN:
+				_settings_newgame.game_creation.snow_line_height = Clamp(value, MIN_SNOWLINE_HEIGHT, MAX_SNOWLINE_HEIGHT);
 				break;
 
 			case WID_GL_DESERT_COVERAGE_TEXT:

src/landscape.cpp

@@ -1510,13 +1510,45 @@ static uint CalculateCoverageLine(uint coverage, uint edge_multiplier)
 	return best_h;
 }
 
+/**
+ * Get current maximum height of the map.
+ * @return The maximum height of the map.
+ */
+static uint GetMapMaxHeight()
+{
+	uint max_height = 0;
+
+	for (const auto tile : Map::Iterate()) {
+		uint h = TileHeight(tile);
+		if (h > max_height) {
+			max_height = h;
+		}
+	}
+
+	return max_height;
+}
+
 /**
  * Calculate the line from which snow begins.
  */
 static void CalculateSnowLine()
 {
-	/* We do not have snow sprites on coastal tiles, so never allow "1" as height. */
-	_settings_game.game_creation.snow_line_height = std::max(CalculateCoverageLine(_settings_game.game_creation.snow_coverage, 0), 2u);
+	/* If snow_line_level is custom, then snow_line_height is already set
+	 * otherwise we have to calculate it
+	 */
+	if (_settings_game.game_creation.snow_line_level != CUSTOM_SNOW_LEVEL_NUMBER) {
+		uint min_snow_line_height = 4;                              // Not too low to make room for farms
+		uint max_snow_line_height = GetMapMaxHeight() - 2;          // Not too high to make room for forests
+
+		uint max_height_diff = min_snow_line_height < max_snow_line_height
+			? max_snow_line_height - min_snow_line_height
+			: 0;
+
+		/* snow_line_level goes up to 4 so we divide by 5 to get a maximum ratio of 80% */
+		uint height_diff = RoundDivSU(max_height_diff * _settings_game.game_creation.snow_line_level, 5);
+
+		_settings_game.game_creation.snow_line_height = min_snow_line_height + height_diff;
+	}
 }
 
 /**

src/lang/english.txt

@@ -1217,6 +1217,15 @@ STR_TERRAIN_TYPE_ALPINIST                                       :Alpinist
 STR_TERRAIN_TYPE_CUSTOM                                         :Custom height
 STR_TERRAIN_TYPE_CUSTOM_VALUE                                   :Custom height ({NUM})
 
+###length 7
+STR_SNOW_LINE_LEVEL_VERY_LOW                                    :Very Low
+STR_SNOW_LINE_LEVEL_LOW                                         :Low
+STR_SNOW_LINE_LEVEL_MEDIUM                                      :Medium
+STR_SNOW_LINE_LEVEL_HIGH                                        :High
+STR_SNOW_LINE_LEVEL_VERY_HIGH                                   :Very high
+STR_SNOW_LINE_LEVEL_CUSTOM                                      :Custom
+STR_SNOW_LINE_LEVEL_CUSTOM_NUMBER                               :Custom ({NUM})
+
 ###length 4
 STR_CITY_APPROVAL_LENIENT                                       :Lenient
 STR_CITY_APPROVAL_TOLERANT                                      :Tolerant
@@ -1593,9 +1602,8 @@ STR_CONFIG_SETTING_OIL_REF_EDGE_DISTANCE_HELPTEXT               :Limit for how f
 STR_CONFIG_SETTING_SNOWLINE_HEIGHT                              :Snow line height: {STRING2}
 STR_CONFIG_SETTING_SNOWLINE_HEIGHT_HELPTEXT                     :Choose at what height snow starts in sub-arctic landscape. Snow also affects industry generation and town growth requirements. Can only be modified via Scenario Editor or is otherwise calculated via "snow coverage"
 
-STR_CONFIG_SETTING_SNOW_COVERAGE                                :Snow coverage: {STRING2}
-STR_CONFIG_SETTING_SNOW_COVERAGE_HELPTEXT                       :Choose the approximate amount of snow on the sub-arctic landscape. Snow also affects industry generation and town growth requirements. Only used during map generation. Sea level and coast tiles never have snow
-STR_CONFIG_SETTING_SNOW_COVERAGE_VALUE                          :{NUM}%
+STR_CONFIG_SETTING_SNOW_LINE_LEVEL                              :Snow line level: {STRING2}
+STR_CONFIG_SETTING_SNOW_LINE_LEVEL_HELPTEXT                     :Choose the approximate height above which all tiles will be covered by snow in sub-arctic landscape. Snow also affects industry generation and town growth requirements.
 
 STR_CONFIG_SETTING_DESERT_COVERAGE                              :Desert coverage: {STRING2}
 STR_CONFIG_SETTING_DESERT_COVERAGE_HELPTEXT                     :Choose the approximate amount of desert on the tropical landscape. Desert also affects industry generation and town growth requirements. Only used during map generation
@@ -3352,10 +3360,7 @@ STR_MAPGEN_HEIGHTMAP_HEIGHT                                     :{BLACK}Highest
 STR_MAPGEN_HEIGHTMAP_HEIGHT_TOOLTIP                             :{BLACK}Choose the highest peak that the game will attempt to create, measured in elevation above sea level
 STR_MAPGEN_HEIGHTMAP_HEIGHT_UP_TOOLTIP                          :{BLACK}Increase the maximum height of highest peak on the map by one
 STR_MAPGEN_HEIGHTMAP_HEIGHT_DOWN_TOOLTIP                        :{BLACK}Decrease the maximum height of highest peak on the map by one
-STR_MAPGEN_SNOW_COVERAGE                                        :{BLACK}Snow coverage:
-STR_MAPGEN_SNOW_COVERAGE_UP_TOOLTIP                             :{BLACK}Increase snow coverage by ten percent
-STR_MAPGEN_SNOW_COVERAGE_DOWN_TOOLTIP                           :{BLACK}Decrease snow coverage by ten percent
-STR_MAPGEN_SNOW_COVERAGE_TEXT                                   :{BLACK}{NUM}%
+STR_MAPGEN_SNOW_LINE_LEVEL                                      :{BLACK}Snow line level:
 STR_MAPGEN_DESERT_COVERAGE                                      :{BLACK}Desert coverage:
 STR_MAPGEN_DESERT_COVERAGE_UP_TOOLTIP                           :{BLACK}Increase desert coverage by ten percent
 STR_MAPGEN_DESERT_COVERAGE_DOWN_TOOLTIP                         :{BLACK}Decrease desert coverage by ten percent
@@ -3420,7 +3425,7 @@ STR_MAPGEN_HEIGHTMAP_SIZE                                       :{ORANGE}{NUM} x
 
 STR_MAPGEN_TERRAIN_TYPE_QUERY_CAPT                              :{WHITE}Target peak height
 STR_MAPGEN_HEIGHTMAP_HEIGHT_QUERY_CAPT                          :{WHITE}Highest peak
-STR_MAPGEN_SNOW_COVERAGE_QUERY_CAPT                             :{WHITE}Snow coverage (in %)
+STR_MAPGEN_SNOW_LINE_LEVEL_QUERY_CAPT                           :{WHITE}Snow line height
 STR_MAPGEN_DESERT_COVERAGE_QUERY_CAPT                           :{WHITE}Desert coverage (in %)
 STR_MAPGEN_START_DATE_QUERY_CAPT                                :{WHITE}Change starting year
 

src/newgrf/newgrf_act0_roadstops.cpp

@@ -105,8 +105,8 @@ static ChangeInfoResult RoadStopChangeInfo(uint first, uint last, int prop, Byte
 				AddStringForMapping(GRFStringID{buf.ReadWord()}, [rs = rs.get()](StringID str) { RoadStopClass::Get(rs->class_index)->name = str; });
 				break;
 
-			case 0x0C: // The draw mode
-				rs->draw_mode = static_cast<RoadStopDrawMode>(buf.ReadByte());
+			case 0x0C: // The draw modes
+				rs->draw_mode = static_cast<RoadStopDrawModes>(buf.ReadByte());
 				break;
 
 			case 0x0D: // Cargo types for random triggers

src/newgrf_roadstop.cpp

@@ -298,7 +298,7 @@ void DrawRoadStopTile(int x, int y, RoadType roadtype, const RoadStopSpec *spec,
 
 	RoadStopDrawModes draw_mode;
 	if (spec->flags.Test(RoadStopSpecFlag::DrawModeRegister)) {
-		draw_mode = static_cast<RoadStopDrawMode>(object.GetRegister(0x100));
+		draw_mode = static_cast<RoadStopDrawModes>(object.GetRegister(0x100));
 	} else {
 		draw_mode = spec->draw_mode;
 	}

src/saveload/afterload.cpp

@@ -66,6 +66,7 @@
 #include "../timer/timer_game_economy.h"
 #include "../timer/timer_game_tick.h"
 #include "../picker_func.h"
+#include "../genworld.h"
 
 #include "saveload_internal.h"
 
@@ -3397,6 +3398,11 @@ bool AfterLoadGame()
 		}
 	}
 
+	if (IsSavegameVersionBefore(SLV_SNOW_LINE_LEVEL)) {
+		/* The snow line level replaces the snow coverage but the two do not map very well. */
+		_settings_game.game_creation.snow_line_level = CUSTOM_SNOW_LEVEL_NUMBER;
+	}
+
 	AfterLoadLabelMaps();
 	AfterLoadCompanyStats();
 	AfterLoadStoryBook();

src/saveload/compat/settings_sl_compat.h

@@ -143,7 +143,7 @@ const SaveLoadCompat _settings_sl_compat[] = {
 	SLC_VAR("economy.fund_roads"),
 	SLC_VAR("economy.give_money"),
 	SLC_VAR("game_creation.snow_line_height"),
-	SLC_VAR("game_creation.snow_coverage"),
+	SLC_NULL(1, SLV_MAPGEN_SETTINGS_REVAMP, SLV_TABLE_CHUNKS),
 	SLC_VAR("game_creation.desert_coverage"),
 	SLC_NULL(4, SL_MIN_VERSION, SLV_144),
 	SLC_VAR("game_creation.starting_year"),

src/saveload/saveload.h

@@ -405,6 +405,7 @@ enum SaveLoadVersion : uint16_t {
 
 	SLV_FACE_STYLES,                        ///< 355  PR#14319 Addition of face styles, replacing gender and ethnicity.
 	SLV_INDUSTRY_NUM_VALID_HISTORY,         ///< 356  PR#14416 Store number of valid history records for industries.
+	SLV_SNOW_LINE_LEVEL,                    ///< 357  PR#14428 Replacement of snow coverage setting with snow line level setting
 
 	SL_MAX_VERSION,                         ///< Highest possible saveload version
 };

src/script/api/script_controller.cpp

@@ -76,7 +76,7 @@ ScriptController::ScriptController(::CompanyID company) :
 
 /* static */ uint ScriptController::GetTick()
 {
-	return ScriptObject::GetActiveInstance().GetController()->ticks;
+	return ScriptObject::GetActiveInstance().GetController().ticks;
 }
 
 /* static */ int ScriptController::GetOpsTillSuspend()
@@ -96,9 +96,9 @@ ScriptController::ScriptController(::CompanyID company) :
 
 /* static */ HSQOBJECT ScriptController::Import(const std::string &library, const std::string &class_name, int version)
 {
-	ScriptController *controller = ScriptObject::GetActiveInstance().GetController();
-	Squirrel *engine = ScriptObject::GetActiveInstance().engine;
-	HSQUIRRELVM vm = engine->GetVM();
+	ScriptController &controller = ScriptObject::GetActiveInstance().GetController();
+	Squirrel &engine = *ScriptObject::GetActiveInstance().engine;
+	HSQUIRRELVM vm = engine.GetVM();
 
 	ScriptInfo *lib = ScriptObject::GetActiveInstance().FindLibrary(library, version);
 	if (lib == nullptr) {
@@ -114,11 +114,11 @@ ScriptController::ScriptController(::CompanyID company) :
 
 	std::string fake_class;
 
-	LoadedLibraryList::iterator it = controller->loaded_library.find(library_name);
-	if (it != controller->loaded_library.end()) {
+	LoadedLibraryList::iterator it = controller.loaded_library.find(library_name);
+	if (it != controller.loaded_library.end()) {
 		fake_class = (*it).second;
 	} else {
-		int next_number = ++controller->loaded_library_count;
+		int next_number = ++controller.loaded_library_count;
 
 		/* Create a new fake internal name */
 		fake_class = fmt::format("_internalNA{}", next_number);
@@ -128,14 +128,14 @@ ScriptController::ScriptController(::CompanyID company) :
 		sq_pushstring(vm, fake_class);
 		sq_newclass(vm, SQFalse);
 		/* Load the library */
-		if (!engine->LoadScript(vm, lib->GetMainScript(), false)) {
+		if (!engine.LoadScript(vm, lib->GetMainScript(), false)) {
 			throw sq_throwerror(vm, fmt::format("there was a compile error when importing '{}' version {}", library, version));
 		}
 		/* Create the fake class */
 		sq_newslot(vm, -3, SQFalse);
 		sq_pop(vm, 1);
 
-		controller->loaded_library[library_name] = fake_class;
+		controller.loaded_library[library_name] = fake_class;
 	}
 
 	/* Find the real class inside the fake class (like 'sets.Vector') */

src/script/api/script_object.cpp

@@ -45,7 +45,7 @@ void SimpleCountedObject::Release()
  * Get the storage associated with the current ScriptInstance.
  * @return The storage.
  */
-static ScriptStorage *GetStorage()
+static ScriptStorage &GetStorage()
 {
 	return ScriptObject::GetActiveInstance().GetStorage();
 }
@@ -65,7 +65,7 @@ ScriptObject::ActiveInstance::~ActiveInstance()
 }
 
 ScriptObject::DisableDoCommandScope::DisableDoCommandScope()
-	: AutoRestoreBackup(GetStorage()->allow_do_command, false)
+	: AutoRestoreBackup(GetStorage().allow_do_command, false)
 {}
 
 /* static */ ScriptInstance &ScriptObject::GetActiveInstance()
@@ -78,181 +78,181 @@ ScriptObject::DisableDoCommandScope::DisableDoCommandScope()
 /* static */ void ScriptObject::SetDoCommandDelay(uint ticks)
 {
 	assert(ticks > 0);
-	GetStorage()->delay = ticks;
+	GetStorage().delay = ticks;
 }
 
 /* static */ uint ScriptObject::GetDoCommandDelay()
 {
-	return GetStorage()->delay;
+	return GetStorage().delay;
 }
 
 /* static */ void ScriptObject::SetDoCommandMode(ScriptModeProc *proc, ScriptObject *instance)
 {
-	GetStorage()->mode = proc;
-	GetStorage()->mode_instance = instance;
+	GetStorage().mode = proc;
+	GetStorage().mode_instance = instance;
 }
 
 /* static */ ScriptModeProc *ScriptObject::GetDoCommandMode()
 {
-	return GetStorage()->mode;
+	return GetStorage().mode;
 }
 
 /* static */ ScriptObject *ScriptObject::GetDoCommandModeInstance()
 {
-	return GetStorage()->mode_instance;
+	return GetStorage().mode_instance;
 }
 
 /* static */ void ScriptObject::SetDoCommandAsyncMode(ScriptAsyncModeProc *proc, ScriptObject *instance)
 {
-	GetStorage()->async_mode = proc;
-	GetStorage()->async_mode_instance = instance;
+	GetStorage().async_mode = proc;
+	GetStorage().async_mode_instance = instance;
 }
 
 /* static */ ScriptAsyncModeProc *ScriptObject::GetDoCommandAsyncMode()
 {
-	return GetStorage()->async_mode;
+	return GetStorage().async_mode;
 }
 
 /* static */ ScriptObject *ScriptObject::GetDoCommandAsyncModeInstance()
 {
-	return GetStorage()->async_mode_instance;
+	return GetStorage().async_mode_instance;
 }
 
 /* static */ void ScriptObject::SetLastCommand(const CommandDataBuffer &data, Commands cmd)
 {
-	ScriptStorage *s = GetStorage();
-	Debug(script, 6, "SetLastCommand company={:02d} cmd={} data={}", s->root_company, cmd, FormatArrayAsHex(data));
-	s->last_data = data;
-	s->last_cmd = cmd;
+	ScriptStorage &s = GetStorage();
+	Debug(script, 6, "SetLastCommand company={:02d} cmd={} data={}", s.root_company, cmd, FormatArrayAsHex(data));
+	s.last_data = data;
+	s.last_cmd = cmd;
 }
 
 /* static */ bool ScriptObject::CheckLastCommand(const CommandDataBuffer &data, Commands cmd)
 {
-	ScriptStorage *s = GetStorage();
-	Debug(script, 6, "CheckLastCommand company={:02d} cmd={} data={}", s->root_company, cmd, FormatArrayAsHex(data));
-	if (s->last_cmd != cmd) return false;
-	if (s->last_data != data) return false;
+	ScriptStorage &s = GetStorage();
+	Debug(script, 6, "CheckLastCommand company={:02d} cmd={} data={}", s.root_company, cmd, FormatArrayAsHex(data));
+	if (s.last_cmd != cmd) return false;
+	if (s.last_data != data) return false;
 	return true;
 }
 
 /* static */ void ScriptObject::SetDoCommandCosts(Money value)
 {
-	GetStorage()->costs = CommandCost(INVALID_EXPENSES, value); // Expense type is never read.
+	GetStorage().costs = CommandCost(INVALID_EXPENSES, value); // Expense type is never read.
 }
 
 /* static */ void ScriptObject::IncreaseDoCommandCosts(Money value)
 {
-	GetStorage()->costs.AddCost(value);
+	GetStorage().costs.AddCost(value);
 }
 
 /* static */ Money ScriptObject::GetDoCommandCosts()
 {
-	return GetStorage()->costs.GetCost();
+	return GetStorage().costs.GetCost();
 }
 
 /* static */ void ScriptObject::SetLastError(ScriptErrorType last_error)
 {
-	GetStorage()->last_error = last_error;
+	GetStorage().last_error = last_error;
 }
 
 /* static */ ScriptErrorType ScriptObject::GetLastError()
 {
-	return GetStorage()->last_error;
+	return GetStorage().last_error;
 }
 
 /* static */ void ScriptObject::SetLastCost(Money last_cost)
 {
-	GetStorage()->last_cost = last_cost;
+	GetStorage().last_cost = last_cost;
 }
 
 /* static */ Money ScriptObject::GetLastCost()
 {
-	return GetStorage()->last_cost;
+	return GetStorage().last_cost;
 }
 
 /* static */ void ScriptObject::SetRoadType(RoadType road_type)
 {
-	GetStorage()->road_type = road_type;
+	GetStorage().road_type = road_type;
 }
 
 /* static */ RoadType ScriptObject::GetRoadType()
 {
-	return GetStorage()->road_type;
+	return GetStorage().road_type;
 }
 
 /* static */ void ScriptObject::SetRailType(RailType rail_type)
 {
-	GetStorage()->rail_type = rail_type;
+	GetStorage().rail_type = rail_type;
 }
 
 /* static */ RailType ScriptObject::GetRailType()
 {
-	return GetStorage()->rail_type;
+	return GetStorage().rail_type;
 }
 
 /* static */ void ScriptObject::SetLastCommandRes(bool res)
 {
-	GetStorage()->last_command_res = res;
+	GetStorage().last_command_res = res;
 }
 
 /* static */ bool ScriptObject::GetLastCommandRes()
 {
-	return GetStorage()->last_command_res;
+	return GetStorage().last_command_res;
 }
 
 /* static */ void ScriptObject::SetLastCommandResData(CommandDataBuffer data)
 {
-	GetStorage()->last_cmd_ret = std::move(data);
+	GetStorage().last_cmd_ret = std::move(data);
 }
 
 /* static */ const CommandDataBuffer &ScriptObject::GetLastCommandResData()
 {
-	return GetStorage()->last_cmd_ret;
+	return GetStorage().last_cmd_ret;
 }
 
 /* static */ void ScriptObject::SetCompany(::CompanyID company)
 {
-	if (GetStorage()->root_company == INVALID_OWNER) GetStorage()->root_company = company;
-	GetStorage()->company = company;
+	if (GetStorage().root_company == INVALID_OWNER) GetStorage().root_company = company;
+	GetStorage().company = company;
 
 	_current_company = company;
 }
 
 /* static */ ::CompanyID ScriptObject::GetCompany()
 {
-	return GetStorage()->company;
+	return GetStorage().company;
 }
 
 /* static */ ::CompanyID ScriptObject::GetRootCompany()
 {
-	return GetStorage()->root_company;
+	return GetStorage().root_company;
 }
 
 /* static */ bool ScriptObject::CanSuspend()
 {
 	Squirrel *squirrel = ScriptObject::GetActiveInstance().engine;
-	return GetStorage()->allow_do_command && squirrel->CanSuspend();
+	return GetStorage().allow_do_command && squirrel->CanSuspend();
 }
 
 /* static */ ScriptEventQueue &ScriptObject::GetEventQueue()
 {
-	return GetStorage()->event_queue;
+	return GetStorage().event_queue;
 }
 
 /* static */ ScriptLogTypes::LogData &ScriptObject::GetLogData()
 {
-	return GetStorage()->log_data;
+	return GetStorage().log_data;
 }
 
 /* static */ void ScriptObject::SetCallbackVariable(int index, int value)
 {
-	if (static_cast<size_t>(index) >= GetStorage()->callback_value.size()) GetStorage()->callback_value.resize(index + 1);
-	GetStorage()->callback_value[index] = value;
+	if (static_cast<size_t>(index) >= GetStorage().callback_value.size()) GetStorage().callback_value.resize(index + 1);
+	GetStorage().callback_value[index] = value;
 }
 
 /* static */ int ScriptObject::GetCallbackVariable(int index)
 {
-	return GetStorage()->callback_value[index];
+	return GetStorage().callback_value[index];
 }
 
 /* static */ CommandCallbackData *ScriptObject::GetDoCommandCallback()
@@ -310,8 +310,8 @@ ScriptObject::DisableDoCommandScope::DisableDoCommandScope()
 		IncreaseDoCommandCosts(res.GetCost());
 		if (!_generating_world) {
 			/* Charge a nominal fee for asynchronously executed commands */
-			Squirrel *engine = ScriptObject::GetActiveInstance().engine;
-			Squirrel::DecreaseOps(engine->GetVM(), 100);
+			Squirrel &engine = *ScriptObject::GetActiveInstance().engine;
+			Squirrel::DecreaseOps(engine.GetVM(), 100);
 		}
 		if (callback != nullptr) {
 			/* Insert return value into to stack and throw a control code that

src/script/script_instance.cpp

@@ -100,7 +100,7 @@ void ScriptInstance::Initialize(const std::string &main_script, const std::strin
 
 void ScriptInstance::RegisterAPI()
 {
-	squirrel_register_std(this->engine);
+	squirrel_register_std(*this->engine);
 }
 
 bool ScriptInstance::LoadCompatibilityScript(std::string_view api_version, Subdirectory dir)
@@ -318,9 +318,10 @@ void ScriptInstance::CollectGarbage()
 }
 
 
-ScriptStorage *ScriptInstance::GetStorage()
+ScriptStorage &ScriptInstance::GetStorage()
 {
-	return this->storage;
+	assert(this->storage != nullptr);
+	return *this->storage;
 }
 
 ScriptLogTypes::LogData &ScriptInstance::GetLogData()

src/script/script_instance.hpp

@@ -91,7 +91,7 @@ public:
 	/**
 	 * Get the storage of this script.
 	 */
-	class ScriptStorage *GetStorage();
+	class ScriptStorage &GetStorage();
 
 	/**
 	 * Get the log pointer of this script.
@@ -146,7 +146,11 @@ public:
 	/**
 	 * Get the controller attached to the instance.
 	 */
-	class ScriptController *GetController() { return controller; }
+	class ScriptController &GetController()
+	{
+		assert(this->controller != nullptr);
+		return *this->controller;
+	}
 
 	/**
 	 * Return the "this script died" value

src/script/squirrel.cpp

@@ -536,7 +536,7 @@ void Squirrel::Initialize()
 	sq_setforeignptr(this->vm, this);
 
 	sq_pushroottable(this->vm);
-	squirrel_register_global_std(this);
+	squirrel_register_global_std(*this);
 
 	/* Set consts table as delegate of root table, so consts/enums defined via require() are accessible */
 	sq_pushconsttable(this->vm);

src/script/squirrel_std.cpp

@@ -82,20 +82,20 @@ SQInteger SquirrelStd::notifyallexceptions(HSQUIRRELVM vm)
 	return SQ_ERROR;
 }
 
-void squirrel_register_global_std(Squirrel *engine)
+void squirrel_register_global_std(Squirrel &engine)
 {
 	/* We don't use squirrel_helper here, as we want to register to the global
 	 *  scope and not to a class. */
-	engine->AddMethod("require",             &SquirrelStd::require,             ".s");
-	engine->AddMethod("notifyallexceptions", &SquirrelStd::notifyallexceptions, ".b");
+	engine.AddMethod("require",             &SquirrelStd::require,             ".s");
+	engine.AddMethod("notifyallexceptions", &SquirrelStd::notifyallexceptions, ".b");
 }
 
-void squirrel_register_std(Squirrel *engine)
+void squirrel_register_std(Squirrel &engine)
 {
 	/* We don't use squirrel_helper here, as we want to register to the global
 	 *  scope and not to a class. */
-	engine->AddMethod("min", &SquirrelStd::min, ".ii");
-	engine->AddMethod("max", &SquirrelStd::max, ".ii");
+	engine.AddMethod("min", &SquirrelStd::min, ".ii");
+	engine.AddMethod("max", &SquirrelStd::max, ".ii");
 
-	sqstd_register_mathlib(engine->GetVM());
+	sqstd_register_mathlib(engine.GetVM());
 }

src/script/squirrel_std.hpp

@@ -52,12 +52,12 @@ public:
 /**
  * Register all standard functions we want to give to a script.
  */
-void squirrel_register_std(Squirrel *engine);
+void squirrel_register_std(Squirrel &engine);
 
 /**
  * Register all standard functions that are available on first startup.
  * @note this set is very limited, and is only meant to load other scripts and things like that.
  */
-void squirrel_register_global_std(Squirrel *engine);
+void squirrel_register_global_std(Squirrel &engine);
 
 #endif /* SQUIRREL_STD_HPP */

src/settingentry_gui.cpp

@@ -842,7 +842,7 @@ SettingsContainer &GetSettingsTree()
 			genworld->Add(new SettingEntry("difficulty.terrain_type"));
 			genworld->Add(new SettingEntry("game_creation.tgen_smoothness"));
 			genworld->Add(new SettingEntry("game_creation.variety"));
-			genworld->Add(new SettingEntry("game_creation.snow_coverage"));
+			genworld->Add(new SettingEntry("game_creation.snow_line_level"));
 			genworld->Add(new SettingEntry("game_creation.snow_line_height"));
 			genworld->Add(new SettingEntry("game_creation.desert_coverage"));
 			genworld->Add(new SettingEntry("game_creation.amount_of_rivers"));

src/settings_type.h

@@ -363,8 +363,8 @@ struct GameCreationSettings {
 	uint8_t  map_y;                            ///< Y size of map
 	uint8_t land_generator;                   ///< the landscape generator
 	uint8_t oil_refinery_limit;               ///< distance oil refineries allowed from map edge
-	uint8_t snow_line_height;                 ///< the configured snow line height (deduced from "snow_coverage")
-	uint8_t snow_coverage;                    ///< the amount of snow coverage on the map
+	uint8_t snow_line_height;                 ///< the configured snow line height (deduced from "snow_line_level" unless it is set on "custom")
+	uint8_t snow_line_level;                  ///< the approximate snow line level on the map
 	uint8_t desert_coverage;                  ///< the amount of desert coverage on the map
 	uint8_t heightmap_height;                 ///< highest mountain for heightmap (towards what it scales)
 	uint8_t tgen_smoothness;                  ///< how rough is the terrain from 0-3

src/station_cmd.cpp

@@ -3331,7 +3331,7 @@ draw_default_foundation:
 			auto result = GetRoadStopLayout(ti, stopspec, st, type, view, regs100);
 			if (result.has_value()) {
 				if (stopspec->flags.Test(RoadStopSpecFlag::DrawModeRegister)) {
-					stop_draw_mode = static_cast<RoadStopDrawMode>(regs100[0]);
+					stop_draw_mode = static_cast<RoadStopDrawModes>(regs100[0]);
 				}
 				if (type == StationType::RoadWaypoint && stop_draw_mode.Test(RoadStopDrawMode::WaypGround)) {
 					draw_ground = true;

src/table/settings/world_settings.ini

@@ -97,17 +97,17 @@ strval   = STR_JUST_COMMA
 cat      = SC_BASIC
 
 [SDT_VAR]
-var      = game_creation.snow_coverage
+var      = game_creation.snow_line_level
 type     = SLE_UINT8
-from     = SLV_MAPGEN_SETTINGS_REVAMP
-flags    = SettingFlag::NewgameOnly
-def      = DEF_SNOW_COVERAGE
+from     = SLV_SNOW_LINE_LEVEL
+flags    = SettingFlag::GuiDropdown, SettingFlag::NewgameOnly
+def      = 1
 min      = 0
-max      = 100
-interval = 10
-str      = STR_CONFIG_SETTING_SNOW_COVERAGE
-strhelp  = STR_CONFIG_SETTING_SNOW_COVERAGE_HELPTEXT
-strval   = STR_CONFIG_SETTING_SNOW_COVERAGE_VALUE
+max      = 5
+interval = 1
+str      = STR_CONFIG_SETTING_SNOW_LINE_LEVEL
+strhelp  = STR_CONFIG_SETTING_SNOW_LINE_LEVEL_HELPTEXT
+strval   = STR_SNOW_LINE_LEVEL_VERY_LOW
 cat      = SC_BASIC
 
 [SDT_VAR]

src/tile_type.h

@@ -33,7 +33,6 @@ static const uint MIN_SNOWLINE_HEIGHT = 2;                     ///< Minimum snow
 static const uint DEF_SNOWLINE_HEIGHT = 10;                    ///< Default snowline height
 static const uint MAX_SNOWLINE_HEIGHT = (MAX_TILE_HEIGHT - 2); ///< Maximum allowed snowline height
 
-static const uint DEF_SNOW_COVERAGE = 40;                      ///< Default snow coverage.
 static const uint DEF_DESERT_COVERAGE = 50;                    ///< Default desert coverage.
 
 

src/timetable_gui.cpp

@@ -427,6 +427,7 @@ struct TimetableWindow : Window {
 	void DrawTimetablePanel(const Rect &r) const
 	{
 		const Vehicle *v = this->vehicle;
+		if (v->GetNumOrders() == 0) return;
 		Rect tr = r.Shrink(WidgetDimensions::scaled.framerect);
 		int i = this->vscroll->GetPosition();
 		VehicleOrderID order_id = (i + 1) / 2;

src/widgets/genworld_widget.h

@@ -34,9 +34,7 @@ enum GenerateLandscapeWidgets : WidgetID {
 	WID_GL_START_DATE_TEXT,             ///< Start year.
 	WID_GL_START_DATE_UP,               ///< Increase start year.
 
-	WID_GL_SNOW_COVERAGE_DOWN,          ///< Decrease snow coverage.
-	WID_GL_SNOW_COVERAGE_TEXT,          ///< Snow coverage.
-	WID_GL_SNOW_COVERAGE_UP,            ///< Increase snow coverage.
+	WID_GL_SNOW_LINE_LEVEL_PULLDOWN,    ///< Snow line level.
 
 	WID_GL_DESERT_COVERAGE_DOWN,        ///< Decrease desert coverage.
 	WID_GL_DESERT_COVERAGE_TEXT,        ///< Desert coverage.