smallmap_gui.cpp File Reference

#include "stdafx.h"
#include "core/backup_type.hpp"
#include "clear_map.h"
#include "industry.h"
#include "station_map.h"
#include "landscape.h"
#include "tree_map.h"
#include "viewport_func.h"
#include "town.h"
#include "tunnelbridge_map.h"
#include "core/endian_func.hpp"
#include "vehicle_base.h"
#include "sound_func.h"
#include "window_func.h"
#include "company_base.h"
#include "zoom_func.h"
#include "strings_func.h"
#include "blitter/factory.hpp"
#include "linkgraph/linkgraph_gui.h"
#include "timer/timer.h"
#include "timer/timer_window.h"
#include "smallmap_gui.h"
#include "widgets/smallmap_widget.h"
#include "table/strings.h"
#include <bitset>
#include "safeguards.h"
#include "table/heightmap_colours.h"

Go to the source code of this file.

Data Structures
struct	LegendAndColour
	Structure for holding relevant data for legends in small map. More...
struct	SmallMapColourScheme
	Colour scheme of the smallmap. More...
struct	AndOr
class	SmallMapWindow
	Class managing the smallmap window. More...
class	NWidgetSmallmapDisplay
	Custom container class for displaying smallmap with a vertically resizing legend panel. More...

Macros
#define	MK(a, b)   {a, b, INVALID_INDUSTRYTYPE, 0, INVALID_COMPANY, true, false, false}
	Macro for ordinary entry of LegendAndColour.
#define	MC(col_break)   {0, STR_TINY_BLACK_HEIGHT, INVALID_INDUSTRYTYPE, 0, INVALID_COMPANY, true, false, col_break}
	Macro for a height legend entry with configurable colour.
#define	MO(a, b)   {a, b, INVALID_INDUSTRYTYPE, 0, INVALID_COMPANY, true, false, false}
	Macro for non-company owned property entry of LegendAndColour.
#define	MOEND()   {0, 0, INVALID_INDUSTRYTYPE, 0, OWNER_NONE, true, true, false}
	Macro used for forcing a rebuild of the owner legend the first time it is used.
#define	MKEND()   {0, STR_NULL, INVALID_INDUSTRYTYPE, 0, INVALID_COMPANY, true, true, false}
	Macro for end of list marker in arrays of LegendAndColour.
#define	MS(a, b)   {a, b, INVALID_INDUSTRYTYPE, 0, INVALID_COMPANY, true, false, true}
	Macro for break marker in arrays of LegendAndColour. More...
#define	MKCOLOUR(x)   TO_LE32X(x)
#define	MKCOLOUR_XXXX(x)   (MKCOLOUR(0x01010101) * (uint)(x))
#define	MKCOLOUR_X0X0(x)   (MKCOLOUR(0x01000100) * (uint)(x))
#define	MKCOLOUR_0X0X(x)   (MKCOLOUR(0x00010001) * (uint)(x))
#define	MKCOLOUR_0XX0(x)   (MKCOLOUR(0x00010100) * (uint)(x))
#define	MKCOLOUR_X00X(x)   (MKCOLOUR(0x01000001) * (uint)(x))
#define	MKCOLOUR_XYXY(x, y)   (MKCOLOUR_X0X0(x) | MKCOLOUR_0X0X(y))
#define	MKCOLOUR_XYYX(x, y)   (MKCOLOUR_X00X(x) | MKCOLOUR_0XX0(y))
#define	MKCOLOUR_0000   MKCOLOUR_XXXX(0x00)
#define	MKCOLOUR_0FF0   MKCOLOUR_0XX0(0xFF)
#define	MKCOLOUR_F00F   MKCOLOUR_X00X(0xFF)
#define	MKCOLOUR_FFFF   MKCOLOUR_XXXX(0xFF)

Enumerations
enum	SmallMapType : uint8_t {   SMT_CONTOUR, SMT_VEHICLES, SMT_INDUSTRY, SMT_LINKSTATS,   SMT_ROUTES, SMT_VEGETATION, SMT_OWNER }
	Types of legends in the WID_SM_LEGEND widget.

Functions
void	BuildIndustriesLegend ()
	Fills an array for the industries legends.
void	BuildLinkStatsLegend ()
	Populate legend table for the link stat view.
void	BuildLandLegend ()
	(Re)build the colour tables for the legends.
void	BuildOwnerLegend ()
	Completes the array for the owned property legend.
static uint32_t	ApplyMask (uint32_t colour, const AndOr *mask)
static uint32_t	GetSmallMapContoursPixels (TileIndex tile, TileType t)
	Return the colour a tile would be displayed with in the small map in mode "Contour". More...
static uint32_t	GetSmallMapVehiclesPixels (TileIndex, TileType t)
	Return the colour a tile would be displayed with in the small map in mode "Vehicles". More...
static uint32_t	GetSmallMapIndustriesPixels (TileIndex tile, TileType t)
	Return the colour a tile would be displayed with in the small map in mode "Industries". More...
static uint32_t	GetSmallMapRoutesPixels (TileIndex tile, TileType t)
	Return the colour a tile would be displayed with in the small map in mode "Routes". More...
static uint32_t	GetSmallMapLinkStatsPixels (TileIndex tile, TileType t)
	Return the colour a tile would be displayed with in the small map in mode "link stats". More...
static uint32_t	GetSmallMapVegetationPixels (TileIndex tile, TileType t)
	Return the colour a tile would be displayed with in the smallmap in mode "Vegetation". More...
uint32_t	GetSmallMapOwnerPixels (TileIndex tile, TileType t, IncludeHeightmap include_heightmap)
	Return the colour a tile would be displayed with in the small map in mode "Owner". More...
static std::unique_ptr< NWidgetBase >	SmallMapDisplay ()
void	ShowSmallMap ()
	Show the smallmap window.
bool	ScrollMainWindowTo (int x, int y, int z, bool instant)
	Scrolls the main window to given coordinates. More...
Point	GetSmallMapStationMiddle (const Window *w, const Station *st)
	Determine the middle of a station in the smallmap window. More...

Variables
static int	_smallmap_industry_count
	Number of used industries.
static int	_smallmap_company_count
	Number of entries in the owner legend.
static int	_smallmap_cargo_count
	Number of cargos in the link stats legend.
static uint8_t	_linkstat_colours_in_legenda [] = {0, 1, 3, 5, 7, 9, 11}
	Link stat colours shown in legenda.
static const int	NUM_NO_COMPANY_ENTRIES = 4
	Number of entries in the owner legend that are not companies.
static LegendAndColour	_legend_land_contours []
	Legend text giving the colours to look for on the minimap. More...
static const LegendAndColour	_legend_vehicles []
static const LegendAndColour	_legend_routes []
static const LegendAndColour	_legend_vegetation []
static LegendAndColour	_legend_land_owners [NUM_NO_COMPANY_ENTRIES+MAX_COMPANIES+1]
static LegendAndColour	_legend_linkstats [NUM_CARGO+lengthof(_linkstat_colours_in_legenda)+1]
	Legend entries for the link stats view.
static LegendAndColour	_legend_from_industries [NUM_INDUSTRYTYPES+1]
	Allow room for all industries, plus a terminator entry This is required in order to have the industry slots all filled up.
static uint	_industry_to_list_pos [NUM_INDUSTRYTYPES]
	For connecting industry type to position in industries list(small map legend)
static uint16_t	_industry_to_name_string_width [NUM_INDUSTRYTYPES]
	The string bounding box width for each industry type in the smallmap.
static bool	_smallmap_show_heightmap = false
	Show heightmap in industry and owner mode of smallmap window.
static IndustryType	_smallmap_industry_highlight = INVALID_INDUSTRYTYPE
	Highlight a specific industry type.
static bool	_smallmap_industry_highlight_state
	State of highlight blinking.
static uint	_company_to_list_pos [MAX_COMPANIES]
	For connecting company ID to position in owner list (small map legend)
static const LegendAndColour *const	_legend_table []
static SmallMapColourScheme	_heightmap_schemes []
	Available colour schemes for height maps. More...
static const AndOr	_smallmap_contours_andor []
	Colour masks for "Contour" and "Routes" modes. More...
static const AndOr	_smallmap_vehicles_andor []
	Colour masks for "Vehicles", "Industry", and "Vegetation" modes. More...
static const uint8_t	_tiletype_importance []
	Mapping of tile type to importance of the tile (higher number means more interesting to show). More...
static const uint32_t	_vegetation_clear_bits []
static const uint8_t	_vehicle_type_colours [6]
	Vehicle colours in #SMT_VEHICLES mode. More...
static constexpr NWidgetPart	_nested_smallmap_display []
	Widget parts of the smallmap display. More...
static constexpr NWidgetPart	_nested_smallmap_bar []
	Widget parts of the smallmap legend bar + image buttons.
static constexpr NWidgetPart	_nested_smallmap_widgets []
static WindowDesc	_smallmap_desc (WDP_AUTO, "smallmap", 484, 314, WC_SMALLMAP, WC_NONE, 0, _nested_smallmap_widgets)

Detailed Description

GUI that shows a small map of the world with metadata like owner or height.

Definition in file smallmap_gui.cpp.

Macro Definition Documentation

MS

#define MS	(		a,
			b
	)		{a, b, INVALID_INDUSTRYTYPE, 0, INVALID_COMPANY, true, false, true}

Macro for break marker in arrays of LegendAndColour.

It will have valid data, though

Definition at line 81 of file smallmap_gui.cpp.

Function Documentation

GetSmallMapContoursPixels()

static uint32_t GetSmallMapContoursPixels ( TileIndex  tile, TileType  t  )

inlinestatic

Return the colour a tile would be displayed with in the small map in mode "Contour".

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).

Returns

The colour of tile in the small map in mode "Contour"

Definition at line 433 of file smallmap_gui.cpp.

References _heightmap_schemes, _settings_client, ClientSettings::gui, and GUISettings::smallmap_land_colour.

Referenced by GetSmallMapLinkStatsPixels().

GetSmallMapIndustriesPixels()

static uint32_t GetSmallMapIndustriesPixels ( TileIndex  tile, TileType  t  )

inlinestatic

Return the colour a tile would be displayed with in the small map in mode "Industries".

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).

Returns

The colour of tile in the small map in mode "Industries"

Definition at line 459 of file smallmap_gui.cpp.

References _heightmap_schemes, _settings_client, ClientSettings::gui, and GUISettings::smallmap_land_colour.

GetSmallMapLinkStatsPixels()

static uint32_t GetSmallMapLinkStatsPixels ( TileIndex  tile, TileType  t  )

inlinestatic

Return the colour a tile would be displayed with in the small map in mode "link stats".

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).

Returns

The colour of tile in the small map in mode "link stats"

Definition at line 528 of file smallmap_gui.cpp.

References _smallmap_show_heightmap, GetSmallMapContoursPixels(), and GetSmallMapRoutesPixels().

GetSmallMapOwnerPixels()

uint32_t GetSmallMapOwnerPixels	(	TileIndex	tile,
		TileType	t,
		IncludeHeightmap	include_heightmap
	)

Return the colour a tile would be displayed with in the small map in mode "Owner".

Note

If include_heightmap is IH_NEVER, the return value can safely be used as a palette colour (by masking it to a uint8_t)

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).
include_heightmap	Whether to return the heightmap/contour colour of this tile (instead of the default land tile colour)

Returns

The colour of tile in the small map in mode "Owner"

Definition at line 584 of file smallmap_gui.cpp.

References MP_VOID.

GetSmallMapRoutesPixels()

static uint32_t GetSmallMapRoutesPixels ( TileIndex  tile, TileType  t  )

inlinestatic

Return the colour a tile would be displayed with in the small map in mode "Routes".

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).

Returns

The colour of tile in the small map in mode "Routes"

Definition at line 472 of file smallmap_gui.cpp.

References GetStationType(), and MP_STATION.

Referenced by GetSmallMapLinkStatsPixels().

GetSmallMapStationMiddle()

Point GetSmallMapStationMiddle	(	const Window *	w,
		const Station *	st
	)

Determine the middle of a station in the smallmap window.

Parameters

st	The station we're looking for.

Returns

Middle point of the station in the smallmap window.

Definition at line 2101 of file smallmap_gui.cpp.

GetSmallMapVegetationPixels()

static uint32_t GetSmallMapVegetationPixels ( TileIndex  tile, TileType  t  )

inlinestatic

Return the colour a tile would be displayed with in the smallmap in mode "Vegetation".

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).

Returns

The colour of tile in the smallmap in mode "Vegetation"

Definition at line 551 of file smallmap_gui.cpp.

References CLEAR_GRASS, GetClearDensity(), IsClearGround(), and MP_CLEAR.

GetSmallMapVehiclesPixels()

static uint32_t GetSmallMapVehiclesPixels ( TileIndex  , TileType  t  )

inlinestatic

Return the colour a tile would be displayed with in the small map in mode "Vehicles".

Parameters

tile	The tile of which we would like to get the colour.
t	Effective tile type of the tile (see SmallMapWindow::GetTileColours).

Returns

The colour of tile in the small map in mode "Vehicles"

Definition at line 446 of file smallmap_gui.cpp.

References _heightmap_schemes, _settings_client, ClientSettings::gui, and GUISettings::smallmap_land_colour.

ScrollMainWindowTo()

bool ScrollMainWindowTo	(	int	x,
		int	y,
		int	z,
		bool	instant
	)

Scrolls the main window to given coordinates.

Parameters

x	x coordinate
y	y coordinate
z	z coordinate; -1 to scroll to terrain height
instant	scroll instantly (meaningful only when smooth_scrolling is active)

Returns

did the viewport position change?

Definition at line 2080 of file smallmap_gui.cpp.

Referenced by ScrollMainWindowToTile().

Variable Documentation

_heightmap_schemes

SmallMapColourScheme _heightmap_schemes[]

static

Initial value:

= {
  {{}, _green_map_heights,      MKCOLOUR_XXXX(0x54)}, 
  {{}, _dark_green_map_heights, MKCOLOUR_XXXX(0x62)}, 
  {{}, _violet_map_heights,     MKCOLOUR_XXXX(0x81)}, 
}

Available colour schemes for height maps.

Definition at line 285 of file smallmap_gui.cpp.

Referenced by BuildLandLegend(), GetSmallMapContoursPixels(), GetSmallMapIndustriesPixels(), GetSmallMapVehiclesPixels(), and SmallMapWindow::RebuildColourIndexIfNecessary().

_legend_land_contours

LegendAndColour _legend_land_contours[]

static

Initial value:

= {
  MK(PC_BLACK,           STR_SMALLMAP_LEGENDA_ROADS),
  MK(PC_GREY,            STR_SMALLMAP_LEGENDA_RAILROADS),
  MK(PC_LIGHT_BLUE,      STR_SMALLMAP_LEGENDA_STATIONS_AIRPORTS_DOCKS),
  MK(PC_DARK_RED,        STR_SMALLMAP_LEGENDA_BUILDINGS_INDUSTRIES),
  MK(PC_WHITE,           STR_SMALLMAP_LEGENDA_VEHICLES),
 
  
  MC(true),
  MC(false),
  MC(false),
  MC(false),
  MC(false),
  MC(false),
  MC(true),
  MC(false),
  MC(false),
  MC(false),
  MC(false),
  MC(false),
 
}

Legend text giving the colours to look for on the minimap.

Definition at line 84 of file smallmap_gui.cpp.

Referenced by BuildLandLegend().

_legend_land_owners

LegendAndColour _legend_land_owners[NUM_NO_COMPANY_ENTRIES+MAX_COMPANIES+1]

static

Initial value:

= {
  MO(PC_WATER,           STR_SMALLMAP_LEGENDA_WATER),
  MO(0x00,               STR_SMALLMAP_LEGENDA_NO_OWNER), 
  MO(PC_DARK_RED,        STR_SMALLMAP_LEGENDA_TOWNS),
  MO(PC_DARK_GREY,       STR_SMALLMAP_LEGENDA_INDUSTRIES),
  
  MOEND(),
}

Definition at line 150 of file smallmap_gui.cpp.

_legend_routes

const LegendAndColour _legend_routes[]

static

Initial value:

= {
  MK(PC_BLACK,           STR_SMALLMAP_LEGENDA_ROADS),
  MK(PC_GREY,            STR_SMALLMAP_LEGENDA_RAILROADS),
  MK(PC_DARK_RED,        STR_SMALLMAP_LEGENDA_BUILDINGS_INDUSTRIES),
 
  MS(PC_VERY_DARK_BROWN, STR_SMALLMAP_LEGENDA_RAILROAD_STATION),
  MK(PC_ORANGE,          STR_SMALLMAP_LEGENDA_TRUCK_LOADING_BAY),
  MK(PC_YELLOW,          STR_SMALLMAP_LEGENDA_BUS_STATION),
  MK(PC_RED,             STR_SMALLMAP_LEGENDA_AIRPORT_HELIPORT),
  MK(PC_LIGHT_BLUE,      STR_SMALLMAP_LEGENDA_DOCK),
 
}

Definition at line 120 of file smallmap_gui.cpp.

_legend_table

const LegendAndColour* const _legend_table[]

static

Initial value:

= {
  _legend_land_contours,
  _legend_vehicles,
  _legend_from_industries,
  _legend_linkstats,
  _legend_routes,
  _legend_vegetation,
  _legend_land_owners,
}

Definition at line 249 of file smallmap_gui.cpp.

_legend_vegetation

const LegendAndColour _legend_vegetation[]

static

Initial value:

= {
  MK(PC_ROUGH_LAND,      STR_SMALLMAP_LEGENDA_ROUGH_LAND),
  MK(PC_GRASS_LAND,      STR_SMALLMAP_LEGENDA_GRASS_LAND),
  MK(PC_BARE_LAND,       STR_SMALLMAP_LEGENDA_BARE_LAND),
  MK(PC_RAINFOREST,      STR_SMALLMAP_LEGENDA_RAINFOREST),
  MK(PC_FIELDS,          STR_SMALLMAP_LEGENDA_FIELDS),
  MK(PC_TREES,           STR_SMALLMAP_LEGENDA_TREES),
 
  MS(PC_GREEN,           STR_SMALLMAP_LEGENDA_FOREST),
  MK(PC_GREY,            STR_SMALLMAP_LEGENDA_ROCKS),
  MK(PC_ORANGE,          STR_SMALLMAP_LEGENDA_DESERT),
  MK(PC_LIGHT_BLUE,      STR_SMALLMAP_LEGENDA_SNOW),
  MK(PC_BLACK,           STR_SMALLMAP_LEGENDA_TRANSPORT_ROUTES),
  MK(PC_DARK_RED,        STR_SMALLMAP_LEGENDA_BUILDINGS_INDUSTRIES),
 
}

Definition at line 133 of file smallmap_gui.cpp.

_legend_vehicles

const LegendAndColour _legend_vehicles[]

static

Initial value:

= {
  MK(PC_RED,             STR_SMALLMAP_LEGENDA_TRAINS),
  MK(PC_YELLOW,          STR_SMALLMAP_LEGENDA_ROAD_VEHICLES),
  MK(PC_LIGHT_BLUE,      STR_SMALLMAP_LEGENDA_SHIPS),
  MK(PC_WHITE,           STR_SMALLMAP_LEGENDA_AIRCRAFT),
 
  MS(PC_BLACK,           STR_SMALLMAP_LEGENDA_TRANSPORT_ROUTES),
  MK(PC_DARK_RED,        STR_SMALLMAP_LEGENDA_BUILDINGS_INDUSTRIES),
 
}

Definition at line 109 of file smallmap_gui.cpp.

_nested_smallmap_display

constexpr NWidgetPart _nested_smallmap_display[]

staticconstexpr

Initial value:

= {
  NWidget(WWT_PANEL, COLOUR_BROWN, WID_SM_MAP_BORDER),
    NWidget(WWT_INSET, COLOUR_BROWN, WID_SM_MAP), SetMinimalSize(346, 140), SetResize(1, 1), SetPadding(2, 2, 2, 2), EndContainer(),
  EndContainer(),
}

Widget parts of the smallmap display.

Definition at line 1968 of file smallmap_gui.cpp.

_smallmap_contours_andor

const AndOr _smallmap_contours_andor[]

static

Initial value:

= {
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_0XX0(PC_GREY      ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0XX0(PC_BLACK     ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0XX0(PC_DARK_RED  ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_XXXX(PC_LIGHT_BLUE), MKCOLOUR_0000}, 
  {MKCOLOUR_XXXX(PC_WATER     ), MKCOLOUR_0000}, 
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_XXXX(PC_DARK_RED  ), MKCOLOUR_0000}, 
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_0XX0(PC_DARK_RED  ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0XX0(PC_GREY      ), MKCOLOUR_F00F},
}

Colour masks for "Contour" and "Routes" modes.

Definition at line 379 of file smallmap_gui.cpp.

_smallmap_vehicles_andor

const AndOr _smallmap_vehicles_andor[]

static

Initial value:

= {
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_0XX0(PC_BLACK     ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0XX0(PC_BLACK     ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0XX0(PC_DARK_RED  ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_0XX0(PC_BLACK     ), MKCOLOUR_F00F}, 
  {MKCOLOUR_XXXX(PC_WATER     ), MKCOLOUR_0000}, 
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_XXXX(PC_DARK_RED  ), MKCOLOUR_0000}, 
  {MKCOLOUR_0000               , MKCOLOUR_FFFF}, 
  {MKCOLOUR_0XX0(PC_DARK_RED  ), MKCOLOUR_F00F}, 
  {MKCOLOUR_0XX0(PC_BLACK     ), MKCOLOUR_F00F},
}

Colour masks for "Vehicles", "Industry", and "Vegetation" modes.

Definition at line 395 of file smallmap_gui.cpp.

_tiletype_importance

const uint8_t _tiletype_importance[]

static

Initial value:

= {
  2, 
  8, 
  7, 
  5, 
  2, 
  9, 
  2, 
  1, 
  6, 
  8, 
  2, 
  0,
}

Mapping of tile type to importance of the tile (higher number means more interesting to show).

Definition at line 411 of file smallmap_gui.cpp.

_vegetation_clear_bits

const uint32_t _vegetation_clear_bits[]

static

Initial value:

= {
  MKCOLOUR_XXXX(PC_GRASS_LAND), 
  MKCOLOUR_XXXX(PC_ROUGH_LAND), 
  MKCOLOUR_XXXX(PC_GREY),       
  MKCOLOUR_XXXX(PC_FIELDS),     
  MKCOLOUR_XXXX(PC_LIGHT_BLUE), 
  MKCOLOUR_XXXX(PC_ORANGE),     
  MKCOLOUR_XXXX(PC_GRASS_LAND), 
  MKCOLOUR_XXXX(PC_GRASS_LAND), 
}

Definition at line 533 of file smallmap_gui.cpp.

_vehicle_type_colours

const uint8_t _vehicle_type_colours[6]

static

Initial value:

= {
  PC_RED, PC_YELLOW, PC_LIGHT_BLUE, PC_WHITE, PC_BLACK, PC_RED
}

Vehicle colours in #SMT_VEHICLES mode.

Indexed by VehicleType.

Definition at line 612 of file smallmap_gui.cpp.