Known global variables

1195

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This is a table of global variables in SimCity 2000 that have been at least partially reverse engineered and given names. It is probably going to be unpleasant to update, but at least it looks nice and you can sort it.

Data about where in the MISC chunk certain variables are located is from dfloer's sc2k-docs repository on GitHub (CC BY-SA 4.0).

Uncategorized variables

Address	Type	Name	MISC offset	Notes
0x4C702C	CWnd*	pCwndMainWindow		Pointer to the MFC CWnd class for the "root window"
0x4C7104	BOOL	bPriscillaActivated		Whether or not the debug menu has been activated
0x4C71F0	BOOL	bOptionsMusicEnabled	0x0FFC	Whether or not music is enabled
0x4C7318	WORD	wSimulationSpeed	0x0FEC	1-5 for Paused through African Swallow
0x4C9428	WORD	wIndustrialMixPollutionBonus		-1 to 2 used to calculate the map wide Pollution Divisor
0x4C942C	WORD	wViewRotation	0x0008	0 = north, 1 = west, 2 = south, 3 = east
0x4C94C4	DWORD	dwArcologyPopulation	0x1020	Population of the city specifically in arcologies
0x4CA1A0	char*	pszCityName		Pointer to the city name, loaded/saved as the CNAM chunk
0x4CA1BC	WORD	wNationalEconomyTrend	0x005C	Affects interest rates, apparently
0x4CA1E8	WORD	wIndustrialMixBonus		This is used in RCI demand generation as a bonus (cities dominated by 1 industry receive growth bonuses)
0x4CA1DC	WORD	wPrisonBonus		This sets if power stations get increased Police power from Prisons.
0x4CA3F0	WORD	wCityNeighborConnections1500		Count of all $1500 (industrial) neighbor connections (railroad, highways)
0x4CA41C	WORD	wSubwayXUNDCount	0x0FE8	Seems to be mostly used for budget calculations
0x4CA420	WORD	wDisasterType	0x0070	The ID of the next disaster to occur
0x4CA42C	WORD	wCityMode	0x0004	0 = map editor, 1 = regular gameplay, 2 = scenario mode
0x4CA440	int	dwCityLandValue	0x0028	Sum of all values in XVAL
0x4CA444	int	dwCityFunds	0x0014	How much money the city has
0x4CA4C8	WORD*	dwTileCount		Pointer to an array of tile counts for every valid iTileID
0x4CA4D0	DWORD	dwCityValue	0x0024	Appears to have something to do with bond interest rates
0x4CA5F4	WORD	wCityStartYear	0x000C	The year the city was founded
0x4CA81C	WORD	wMonsterXTHGIndex		Which XTHG entry the monster's Thing is
0x4CA928	DWORD	dwNationalPopulation	0x0050	Population of SimNation
0x4CA934	WORD*	dwMilitaryTiles		Pointer to the beginning of the military tiles in the dwTileCount array
0x4CA938	WORD	wNationalTax	0x0058	The national base tax rate or the "fed rate", for calculating bond interest rates
0x4CAA40	DWORD	dwCityOrdinances	0x0FA0	Flags for which city ordinances are enacted
0x4CAA50	DWORD	dwPowerUsedPercentage		Percentage of power capacity in use
0x4CAA74	DWORD	dwCityPopulation	0x102C	Total city population, excluding arcologies
0x4CAD2C	BOOL	bYearEndFlag	0x0E3C	Whether or not the first of the month is the start of a new year
0x4CAD44	BOOL	bInScenario		Whether or not this game is a scenario
0x4CAD58	neighbor_city_t[4]	stNeighborCities	0x06D8	Array of four neighbor cities (32 bytes each), clockwise from bottom left
0x4CADE0	BYTE	bWeatherHeat	0x0060	Weather heat level
0x4CAE04	DWORD	dwCityDays	0x0010	How many days have elapsed since the city was founded
0x4CAE0C	BYTE	bWeatherWind	0x0064	Weather wind speed
0x4CB010	WORD	wCityProgression	0x0078	Flags for city reward progression
0x4CB014	DWORD	dwNationalValue	0x0054	Gross National Product
0x4CB018	DWORD	dwCityAdvertising	0x003C	City advertising effects (unknown what this actually does)
0x4CB01C	WORD	wCityCurrentMonth		Which month of the year it is (0-indexed; calculated from dwCityDays)
0x4CB020	WORD	wCityElapsedYears		Years since the city was founded (calculated from dwCityDays)
0x4CB1B8	void*	pArrSpriteHeaders		Pointer to the array of loaded sprite headers
0x4CB3D0	BOOL	bNewspaperSubscription	0x1004	Whether or not the Subscription newspaper is checked
0x4CB3D4	BYTE	bWeatherHumidity	0x0068	Weather humidity value
0x4CB3DC	WORD	wSewerBonus		Whether the city has adequate wastewater treatment facilities for use in the Pollution Divisor
0x4CB3E8	WORD	wCityCurrentSeason		Which season it is (0 = winter, 1 = spring, 2 = summer, 3 = autumn; calculated from dwCityDays)
0x4CB38C	microsim_t*	dwMicroSimArr		Pointer to the array of microsims
0x4CB404	WORD	wCityDifficulty	0x001C	Game difficulty (0 = no city founded, 1 = easy, 2 = medium, 3 = hard)
0x4CB40C	BYTE	bWeatherTrend	0x006C	What the current weather type is
0x4CB430	WORD[17]	wCityInventionYears	0x0738	What years different technologies are invented in
0x4CB454	DWORD	dwCityCrime	0x002C	Sum of all values in XCRM
0x4CB464	WORD	wCurrentToolGroup		Currently selected tool group
0x4CC4B8	DWORD	dwWaterUsedPercentage		Percentage of water capacity in use
0x4CC4BC	BOOL	bNewspaperExtra	0x1008	Whether or not the Extra!!! newspaper is checked
0x4CC4CC	void*	dwBudgetArr		Pointer to the budget array (needs some reverse engineering and/or documentation work)
0x4CC4D4	BOOL	bNoDisasters	0x1000	Whether or not disasters should be disabled (also disables city council autonomy)
0x4CC4D8	WORD	wCityNeighborConnections1000		Count of all $1000 (commercial) neighbor connections (roads)
0x4CC4E4	BYTE	bMilitaryBaseType	0x0EF4	Military base type (0 = not offered yet, 1 = declined/no location, 2 = army, 3 = air force, 4 = navy, 5 = missile silos)
0x4CC8F8	WORD	wCityResidentialDemand	0x0718	Residential demand (-2000 to +2000)
0x4CC8FA	WORD	wCityCommericalDemand	0x071C	Commercial demand (-2000 to +2000)
0x4CC8FC	WORD	wCityIndustrialDemand	0x0720	Industrial demand (-2000 to +2000)
0x4CC910	DWORD	dwCityPollution		Sum of all Pollution in city.
0x4CDB68	WORD	wCursorXLoc		The X coordinate of the tile currently selected on the map
0x4CDB70	WORD	wCursorYLoc		The Y coordinate of the tile currently selected on the map
0x4CDB7C	DWORD	dwLFSRState		Randomness state for the linear feedback shift register PRNG
0x4CDB80	DWORD	dwLCGState		Randomness state for the linear congruential generator PRNG
0x4CE8C0	AFX_CORE_STATE	pCWinApp		Pointer to a CWinApp (needs reverse engineering -- maybe IDA picked this one out on its own?)

Terrain generation variables

Address	Type	Name	MISC offset	Notes
0x4C94C0	BOOL	bCityHasOcean	0x0E44	Whether or not the city was generated with an ocean
0x4CA1E0	WORD	wCityTerrainSliderHills		Slider value for hill coverage during terrain generation
0x4CA818	__int16	wWaterLevel	0x0E40	Water table level
0x4CAAF8	WORD	wCityTerrainSliderWater		Slider vvalue for water coverage during terrain generation
0x4CADD8	WORD	wCityTerrainSliderTrees		Slider value for tree coverage during terrain generation
0x4CB3F8	BOOL	bCityHasRiver	0x0E48	Whether or not the city was generated with a river

Map data pointers

Address	Type	Name	MISC offset	Notes
0x4C9430	void*	dwMapXPLC		Pointer to a 32x32 "minimap" for police coverage (1 byte per 4x4 block)
0x4C9F58	void*	dwMapXTER		Pointer to a 128x128 map of terrain data (1 byte of type map_XTER_t per tile)
0x4CA1F0	void*	dwMapXZON		Pointer to a 128x128 map of zone and corner info (1 byte of type map_XZON_t per tile)
0x4CA434	void*	dwMapXTHG		Pointer to an array of type map_XTHG_t[256] containing Things
0x4CA448	void*	dwMapXPOP		Pointer to a 32x32 "minimap" for population density (1 byte per 4x4 block)
0x4CA4D8	void*	dwMapXCRM		Pointer to a 64x64 "minimap" for crime (1 byte per 2x2 block)
0x4CA600	void*	dwMapXTXT		Pointer to a 128x128 map of XTXT IDs (1 byte per tile)
0x4CA828	void*	dwMapXPLT		Pointer to a 64x64 "minimap" for pollution (1 byte per 2x2 block)
0x4CA940	void*	dwMapXTRF		Pointer to a 64x64 "minimap" for traffic (1 byte per 2x2 block)
0x4CAA78	void*	dwMapXFIR		Pointer to a 32x32 "minimap" for fire coverage (1 byte per 4x4 block)
0x4CAB10	void*	dwMapXBIT		Pointer to a 128x128 map of tile flags (1 byte of type map_XBIT_t per tile)
0x4CAE10	void*	dwMapALTM		Pointer to a 128x128 map of altitude data (1 byte of type map_ALTM_t per tile)
0x4CB028	void*	dwMapXROG		Pointer to a 32x32 "minimap" of rate of growth data (1 byte of unknown type per 4x4 block)
0x4CB0A8	void*	dwMapXVAL		Pointer to a 64x64 "minimap" of land value (1 byte of (full value / 1000 - 1) per 2x2 block)
0x4CB1D0	void*	dwMapXUND		Pointer to a 128x128 map of underground map data (1 byte of type map_XUND_t per tile)
0x4CC470	void*	dwMapXGRP		Pointer to the historical graph data
0x4CC4F0	void*	dwMapXBLD		Pointer to a 128x128 map of tile IDs (1 byte of type enumTileID per tile)

Simulation Arrays

Address	Type	Name	MISC offset	Notes
004C94B4	void*	pRawPopTable		Pointer to 20-item array for the Population Table
0x4CAA70	void*	pLETable		Pointer to 20-item array for the LE Table, these are as aggregate sums for the entire age group (LE/RawPop=AgeGroupLE).
0x4C94BC	void*	pEQTable		Pointer to 20-item array for the EQ Table, these are as aggregate sums for the entire age group (EQ/RawPop=AgeGroupEQ).
0x4CB3F0	void*	pIndividualIndPops		Pointer to 11-item array for the Raw Populations for City Industries Table.
0x4CB3E0	void*	pIndividualIndTaxRate		Pointer to 11-item array for the each of the Industrial Group's Tax Rates.
0x4CA3F4	void*	pIndividualIndDemands		Pointer to 11-item array for the each of the Industrial Group's current Demand.