Change: remove "maximum map height" from the New Game GUI

This setting influence the max heightlevel, and not as the name
suggests: the height of the generated map.

How ever you slice it, it is a very weird place to add this
setting, and it is better off being only in the settings menu.

Commits following this commit also make it more useful, so users
no longer have to care about it.

3 files changed, 1 insertions, 54 deletions

diff --git a/src/genworld_gui.cpp b/src/genworld_gui.cpp
index 20c12d8b4..c05cf09bc 100644
--- a/src/genworld_gui.cpp
+++ b/src/genworld_gui.cpp
@@ -110,7 +110,6 @@ static const NWidgetPart _nested_generate_landscape_widgets[] = {
 			NWidget(NWID_VERTICAL), SetPIP(0, 4, 0),
 				NWidget(NWID_HORIZONTAL), SetPIP(0, 3, 0),
 					NWidget(NWID_VERTICAL, NC_EQUALSIZE), SetPIP(0, 4, 0),
-						NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_MAPGEN_MAX_HEIGHTLEVEL, STR_NULL), SetFill(1, 1),
 						NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_LABEL),
 							NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_MAPGEN_SNOW_COVERAGE, STR_NULL), SetFill(1, 1),
 							NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_MAPGEN_DESERT_COVERAGE, STR_NULL), SetFill(1, 1),
@@ -121,12 +120,6 @@ static const NWidgetPart _nested_generate_landscape_widgets[] = {
 						NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_GAME_OPTIONS_TOWN_NAMES_FRAME, STR_NULL), SetFill(1, 1),
 					EndContainer(),
 					NWidget(NWID_VERTICAL, NC_EQUALSIZE), SetPIP(0, 4, 0),
-						/* Max. heightlevel. */
-						NWidget(NWID_HORIZONTAL),
-							NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_MAX_HEIGHTLEVEL_DOWN), SetDataTip(SPR_ARROW_DOWN, STR_MAPGEN_MAX_HEIGHTLEVEL_DOWN), SetFill(0, 1),
-							NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_MAX_HEIGHTLEVEL_TEXT), SetDataTip(STR_BLACK_INT, STR_NULL), SetFill(1, 0),
-							NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_MAX_HEIGHTLEVEL_UP), SetDataTip(SPR_ARROW_UP, STR_MAPGEN_MAX_HEIGHTLEVEL_UP), SetFill(0, 1),
-						EndContainer(),
 						NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_SELECTOR),
 							/* Snow coverage. */
 							NWidget(NWID_HORIZONTAL),
@@ -238,7 +231,6 @@ static const NWidgetPart _nested_heightmap_load_widgets[] = {
 					NWidget(NWID_VERTICAL), SetPIP(0, 4, 0),
 						NWidget(NWID_HORIZONTAL), SetPIP(0, 3, 0),
 							NWidget(NWID_VERTICAL, NC_EQUALSIZE), SetPIP(0, 4, 0),
-								NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_MAPGEN_MAX_HEIGHTLEVEL, STR_NULL), SetFill(1, 1),
 								NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_LABEL),
 									NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_MAPGEN_SNOW_COVERAGE, STR_NULL), SetFill(1, 1),
 									NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_MAPGEN_DESERT_COVERAGE, STR_NULL), SetFill(1, 1),
@@ -247,11 +239,6 @@ static const NWidgetPart _nested_heightmap_load_widgets[] = {
 								NWidget(WWT_TEXT, COLOUR_ORANGE), SetDataTip(STR_GAME_OPTIONS_TOWN_NAMES_FRAME, STR_NULL), SetFill(1, 1),
 							EndContainer(),
 							NWidget(NWID_VERTICAL, NC_EQUALSIZE), SetPIP(0, 4, 0),
-								NWidget(NWID_HORIZONTAL),
-									NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_MAX_HEIGHTLEVEL_DOWN), SetDataTip(SPR_ARROW_DOWN, STR_MAPGEN_MAX_HEIGHTLEVEL_DOWN), SetFill(0, 1),
-									NWidget(WWT_TEXTBTN, COLOUR_ORANGE, WID_GL_MAX_HEIGHTLEVEL_TEXT), SetDataTip(STR_BLACK_INT, STR_NULL), SetFill(1, 0),
-									NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_MAX_HEIGHTLEVEL_UP), SetDataTip(SPR_ARROW_UP, STR_MAPGEN_MAX_HEIGHTLEVEL_UP), SetFill(0, 1),
-								EndContainer(),
 								NWidget(NWID_SELECTION, INVALID_COLOUR, WID_GL_CLIMATE_SEL_SELECTOR),
 									NWidget(NWID_HORIZONTAL),
 										NWidget(WWT_IMGBTN, COLOUR_ORANGE, WID_GL_SNOW_COVERAGE_DOWN), SetDataTip(SPR_ARROW_DOWN, STR_MAPGEN_SNOW_COVERAGE_DOWN), SetFill(0, 1),
@@ -386,7 +373,6 @@ struct GenerateLandscapeWindow : public Window {
 			case WID_GL_START_DATE_TEXT:      SetDParam(0, ConvertYMDToDate(_settings_newgame.game_creation.starting_year, 0, 1)); break;
 			case WID_GL_MAPSIZE_X_PULLDOWN:   SetDParam(0, 1LL << _settings_newgame.game_creation.map_x); break;
 			case WID_GL_MAPSIZE_Y_PULLDOWN:   SetDParam(0, 1LL << _settings_newgame.game_creation.map_y); break;
-			case WID_GL_MAX_HEIGHTLEVEL_TEXT: SetDParam(0, _settings_newgame.construction.max_heightlevel); break;
 			case WID_GL_SNOW_COVERAGE_TEXT:   SetDParam(0, _settings_newgame.game_creation.snow_coverage); break;
 			case WID_GL_DESERT_COVERAGE_TEXT: SetDParam(0, _settings_newgame.game_creation.desert_coverage); break;
 
@@ -495,8 +481,6 @@ struct GenerateLandscapeWindow : public Window {
 		this->GetWidget<NWidgetStacked>(WID_GL_CLIMATE_SEL_SELECTOR)->SetDisplayedPlane(climate_plane);
 
 		/* Update availability of decreasing / increasing start date and snow level */
-		this->SetWidgetDisabledState(WID_GL_MAX_HEIGHTLEVEL_DOWN, _settings_newgame.construction.max_heightlevel <= MIN_MAX_HEIGHTLEVEL);
-		this->SetWidgetDisabledState(WID_GL_MAX_HEIGHTLEVEL_UP, _settings_newgame.construction.max_heightlevel >= MAX_MAX_HEIGHTLEVEL);
 		this->SetWidgetDisabledState(WID_GL_START_DATE_DOWN, _settings_newgame.game_creation.starting_year <= MIN_YEAR);
 		this->SetWidgetDisabledState(WID_GL_START_DATE_UP,   _settings_newgame.game_creation.starting_year >= MAX_YEAR);
 		this->SetWidgetDisabledState(WID_GL_SNOW_COVERAGE_DOWN, _settings_newgame.game_creation.snow_coverage <= 0 || _settings_newgame.game_creation.landscape != LT_ARCTIC);
@@ -516,11 +500,6 @@ struct GenerateLandscapeWindow : public Window {
 	{
 		const StringID *strs = nullptr;
 		switch (widget) {
-			case WID_GL_MAX_HEIGHTLEVEL_TEXT:
-				SetDParam(0, MAX_TILE_HEIGHT);
-				*size = GetStringBoundingBox(STR_JUST_INT);
-				break;
-
 			case WID_GL_START_DATE_TEXT:
 				SetDParam(0, ConvertYMDToDate(MAX_YEAR, 0, 1));
 				*size = maxdim(*size, GetStringBoundingBox(STR_BLACK_DATE_LONG));
@@ -661,25 +640,6 @@ struct GenerateLandscapeWindow : public Window {
 				break;
 			}
 
-			case WID_GL_MAX_HEIGHTLEVEL_DOWN:
-			case WID_GL_MAX_HEIGHTLEVEL_UP: // Height level buttons
-				/* Don't allow too fast scrolling */
-				if (!(this->flags & WF_TIMEOUT) || this->timeout_timer <= 1) {
-					this->HandleButtonClick(widget);
-
-					_settings_newgame.construction.max_heightlevel = Clamp(_settings_newgame.construction.max_heightlevel + widget - WID_GL_MAX_HEIGHTLEVEL_TEXT, MIN_MAX_HEIGHTLEVEL, MAX_MAX_HEIGHTLEVEL);
-					this->InvalidateData();
-				}
-				_left_button_clicked = false;
-				break;
-
-			case WID_GL_MAX_HEIGHTLEVEL_TEXT: // Height level text
-				this->widget_id = WID_GL_MAX_HEIGHTLEVEL_TEXT;
-				SetDParam(0, _settings_newgame.construction.max_heightlevel);
-				ShowQueryString(STR_JUST_INT, STR_MAPGEN_MAX_HEIGHTLEVEL_QUERY_CAPT, 4, this, CS_NUMERAL, QSF_ENABLE_DEFAULT);
-				break;
-
-
 			case WID_GL_START_DATE_DOWN:
 			case WID_GL_START_DATE_UP: // Year buttons
 				/* Don't allow too fast scrolling */
@@ -799,7 +759,7 @@ struct GenerateLandscapeWindow : public Window {
 
 	void OnTimeout() override
 	{
-		static const int raise_widgets[] = {WID_GL_MAX_HEIGHTLEVEL_DOWN, WID_GL_MAX_HEIGHTLEVEL_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, WIDGET_LIST_END};
+		static const int raise_widgets[] = {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, WIDGET_LIST_END};
 		for (const int *widget = raise_widgets; *widget != WIDGET_LIST_END; widget++) {
 			if (this->IsWidgetLowered(*widget)) {
 				this->RaiseWidget(*widget);
@@ -869,7 +829,6 @@ struct GenerateLandscapeWindow : public Window {
 		} else {
 			/* An empty string means revert to the default */
 			switch (this->widget_id) {
-				case WID_GL_MAX_HEIGHTLEVEL_TEXT: value = DEF_MAX_HEIGHTLEVEL; break;
 				case WID_GL_START_DATE_TEXT: value = DEF_START_YEAR; break;
 				case WID_GL_SNOW_COVERAGE_TEXT: value = DEF_SNOW_COVERAGE; break;
 				case WID_GL_DESERT_COVERAGE_TEXT: value = DEF_DESERT_COVERAGE; break;
@@ -880,11 +839,6 @@ struct GenerateLandscapeWindow : public Window {
 		}
 
 		switch (this->widget_id) {
-			case WID_GL_MAX_HEIGHTLEVEL_TEXT:
-				this->SetWidgetDirty(WID_GL_MAX_HEIGHTLEVEL_TEXT);
-				_settings_newgame.construction.max_heightlevel = Clamp(value, MIN_MAX_HEIGHTLEVEL, MAX_MAX_HEIGHTLEVEL);
-				break;
-
 			case WID_GL_START_DATE_TEXT:
 				this->SetWidgetDirty(WID_GL_START_DATE_TEXT);
 				_settings_newgame.game_creation.starting_year = Clamp(value, MIN_YEAR, MAX_YEAR);
diff --git a/src/lang/english.txt b/src/lang/english.txt
index 6c01914c0..a8095e58f 100644
--- a/src/lang/english.txt
+++ b/src/lang/english.txt
@@ -2898,9 +2898,6 @@ STR_MAPGEN_BY                                                   :{BLACK}*
 STR_MAPGEN_NUMBER_OF_TOWNS                                      :{BLACK}No. of towns:
 STR_MAPGEN_DATE                                                 :{BLACK}Date:
 STR_MAPGEN_NUMBER_OF_INDUSTRIES                                 :{BLACK}No. of industries:
-STR_MAPGEN_MAX_HEIGHTLEVEL                                      :{BLACK}Maximum map height:
-STR_MAPGEN_MAX_HEIGHTLEVEL_UP                                   :{BLACK}Increase the maximum height of mountains on the map by one
-STR_MAPGEN_MAX_HEIGHTLEVEL_DOWN                                 :{BLACK}Decrease the maximum height of mountains on the map by one
 STR_MAPGEN_SNOW_COVERAGE                                        :{BLACK}Snow coverage:
 STR_MAPGEN_SNOW_COVERAGE_UP                                     :{BLACK}Increase snow coverage by ten percent
 STR_MAPGEN_SNOW_COVERAGE_DOWN                                   :{BLACK}Decrease snow coverage by ten percent
diff --git a/src/widgets/genworld_widget.h b/src/widgets/genworld_widget.h
index dfc7b1a78..40e803ba7 100644
--- a/src/widgets/genworld_widget.h
+++ b/src/widgets/genworld_widget.h
@@ -26,10 +26,6 @@ enum GenerateLandscapeWidgets {
 
 	WID_GL_GENERATE_BUTTON,             ///< 'Generate' button.
 
-	WID_GL_MAX_HEIGHTLEVEL_DOWN,        ///< Decrease max. heightlevel
-	WID_GL_MAX_HEIGHTLEVEL_TEXT,        ///< Max. heightlevel
-	WID_GL_MAX_HEIGHTLEVEL_UP,          ///< Increase max. heightlevel
-
 	WID_GL_START_DATE_DOWN,             ///< Decrease start year.
 	WID_GL_START_DATE_TEXT,             ///< Start year.
 	WID_GL_START_DATE_UP,               ///< Increase start year.