Add: Game units for height. (#14615)

src/lang/english.txt

@@ -254,6 +254,7 @@ STR_UNITS_FORCE_SI                                              :{DECIMAL}{NBSP}
 STR_UNITS_HEIGHT_IMPERIAL                                       :{DECIMAL}{NBSP}ft
 STR_UNITS_HEIGHT_METRIC                                         :{DECIMAL}{NBSP}m
 STR_UNITS_HEIGHT_SI                                             :{DECIMAL}{NBSP}m
+STR_UNITS_HEIGHT_GAMEUNITS                                      :{DECIMAL}{NBSP}level{P "" s}
 
 # Time units used in string control characters
 STR_UNITS_DAYS                                                  :{COMMA}{NBSP}day{P "" s}
@@ -2158,10 +2159,11 @@ STR_CONFIG_SETTING_LOCALISATION_UNITS_FORCE_SI                  :SI (kN)
 
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT                    :Heights units: {STRING2}
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_HELPTEXT           :Whenever a height is shown in the user interface, show it in the selected units
-###length 3
+###length 4
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_IMPERIAL           :Imperial (ft)
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_METRIC             :Metric (m)
 STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_SI                 :SI (m)
+STR_CONFIG_SETTING_LOCALISATION_UNITS_HEIGHT_GAMEUNITS          :Game units (levels)
 
 STR_CONFIG_SETTING_LOCALISATION                                 :Localisation
 STR_CONFIG_SETTING_GRAPHICS                                     :Graphics

src/strings.cpp

@@ -916,6 +916,7 @@ static const Units _units_height[] = {
 	{ { 3.0 }, STR_UNITS_HEIGHT_IMPERIAL, 0 }, // "Wrong" conversion factor for more nicer GUI values
 	{ { 1.0 }, STR_UNITS_HEIGHT_METRIC,   0 },
 	{ { 1.0 }, STR_UNITS_HEIGHT_SI,       0 },
+	{ { .02 }, STR_UNITS_HEIGHT_GAMEUNITS,0 },
 };
 
 /** Unit conversions for time in calendar days or wallclock seconds */

src/table/settings/locale_settings.ini

@@ -163,7 +163,7 @@ type     = SLE_UINT8
 from     = SLV_184
 flags    = SettingFlag::NoNetworkSync, SettingFlag::GuiDropdown
 def      = 1
-max      = 2
+max      = 3
 full     = _locale_units
 post_cb  = [](auto) { MarkWholeScreenDirty(); }
 cat      = SC_BASIC