TTDPatch Landscape Data usage

Class 0 - Grass

• L7: unused
• L6: unused
• L5:

  7..5:	Update Counter incremented on every periodic processing for tile types other than 03, 07, 0B and 10 and above on wraparound the tile is updated (for fields, the type of fields in L3 is increased, for other types the tile type in L5 is increased) (for snow and desert, these bits are not used, tile is updated on every periodic processing)
  4..0:	Type: 0x00 bare land 0x01 1/3 grass 0x02 2/3 grass 0x03 full grass 0x07 rough land 0x0B rocks 0x0F fields; type of fields in L3 bits 3..0 0x10 1/4 snow 0x11 2/4 snow 0x12 3/4 snow 0x13 full snow 0x15 partial desert 0x17 full desert

• L3:

  15..13:	type of hedge on the SW border of the tile (1 through 6, or 0=none)
  12..10:	same for the SE border
  3..0:	Fields: type of fields (legal values: 0 through 9)

• L2: unused
• L1: owner of the tile (normally 0x10)

Class 1 - Railway & Rail Depots

• L8: (planned build year)
• L7: unused (planned abadone rail)
• L6:

  7..4:	PBS for track with signals (with the same meaning as L2)
  3:	PBS for track with signals bit 3 indicates that it's a PBS signal
  5..0:	PBS for plain track (with the same meaning as L5)

• L5:

  7:	railway track (clear) or depot (set)
  6:	has signal, set by depots aswell
  5..0:	track layout: bit 0: in the X direction bit 1: in the Y direction bit 2: in the north corner (direction W-E) bit 3: in the south corner (direction W-E) bit 4: in the west corner (direction N-S) bit 5: in the east corner (direction N-S) or depot exit: 00 = NE, 01 = SE, 02 = SW, 03 = NW

• L3:

  15..8:	Presignals: bit 8: set if pre-signal bits are valid (used for automatic pre-signal setups) bit 9: set for pre-signals and combo signals bit 10: set for exit signals and combo signals bit 11: set = semaphore signals, clear = light signals bit 12: set = Trace restriction, Signal is restricted bit 15: set = manual pre-signal setup
  7..4:	Signal present For track in the X direction: bit 6: signal in the SW direction bit 7: signal in the NE direction For track in the Y direction: bit 6: signal in the NW direction bit 7: signal in the SE direction For tracks in the W-E direction: bit 4: signal in the W direction on the track in the S corner bit 5: signal in the E direction on the track in the S corner bit 6: signal in the W direction on the track in the N corner bit 7: signal in the E direction on the track in the N corner For tracks in the N-S direction: bit 4: signal in the S direction on the track in the E corner bit 5: signal in the N direction on the track in the E corner bit 6: signal in the S direction on the track in the W corner bit 7: signal in the N direction on the track in the W corner
  3..0:	track type

• L2:

  7..4:

  if signal: bit set = signal shows green; same bits as in L3

  3..0:

  type of land & fence for railway tracks: 0x00 on bare land 0x01 on grass, no fences 0x02 fence on the NW side 0x03 fence on the SE side 0x04 fences on the NW and SE sides 0x05 fence on the NE side 0x06 fence on the SW side 0x07 fences on the NE and SW sides 0x08 fence on the E side (track in the W corner) 0x09 fence on the W side (track in the E corner) 0x0A fence on the S side (track in the N corner) 0x0B fence on the N side (track in the S corner) 0x0C on snow or desert

• L1: owner of the track/depot

Class 2 - Street, Crossings & Road Depots

• L8: (planned build year)
• L7: One-way roads

  4..7:	unused
  0..3:	One-way remove routeing bits

• L6: Abandoned roads; time until being abandoned
• L5:

  7..6:	cleared, unused?
  5:	Set = Road depot
  4:	Set = Crossing Rail/Road
  3..0:	Road layout: bit 0: NW piece bit 1: SW piece bit 2: SE piece bit 3: NE piece or road depot exit: 00 = NE, 01 = SE, 02 = SW, 03 = NW
  3:	Crossing: Set = road in Y direction
  2:	Crossing: Set = enabled crossing light

• L3:

  15:	On snow or desert
  14..12:	unknown/unused?
  11..8:	Crossings: track type
  0..7:	Crossings: owner of the road
  0..3:	Tram routeing bits, same as L5; for depots bit 0 set = tram depot

• L2:

  7..3:	unknown/unused?
  0..2:	0 - on bare land, 1 - on grass, 2 - paved, 3 - with streetlights, 5 - tree-lined, 6 - on grass with road works, 7 - paved with road Crossings: all above 1 = paved

• L1: owner of the road / road depot or railway track

Class 3 - Townbuilding

• L7: Newhouses: Year of construction
• L6: Newhouses: Random bits
• L5:

  7:	Final position of lift in 5..0 (building types 04 and 05)
  7..3:	Newhouses current animation frame
  5..0:	If bit 7 is set, final position of lift divided by 6 (valid values 0..6 except 1) (types 04 and 05)
  2..0:	Construction counter, for buildings under construction incremented on every periodic tile processing, on wraparound the stage of construction in L3 is increased

• L3:

  15..8:	Newhouses real building type (for new house types) or zero (meaning it's an old type)
  7..6:	Stage of construction (3 = completed)
  5..0:	Newhouses random triggers activated so far

• L2: building type / newhouses substitute building type (valid 0x00 till 0x6D)
• L1:

  7..0:	Newhouses periodic processings remaining before activating random triggers 1 and 2
  7:	Set = lift moveing (types 04 and 05)
  6..0:	Lift position (types 04 and 05)

Class 4 - Trees

• L7: unused
• L6: unused
• L5:

  7..6:	Tree count minus one
  2..0:	Growth status: 0..2 - one of trees is growing, 3 - all trees are fully grown, 4..6 - one of trees is withering

• L3:

  15..13:	Type of hedge on the SW border of the tile (1 through 6, or 0=none)
  12..10:	Type of hedge on the SE border of the tile (1 through 6, or 0=none)
  9..8:	unknown/unused?
  7..0:	Tree types: 0x00..0x0B temperate climate trees 0x0C..0x13 sub-arctic climate trees 0x14..0x1A rainforest trees 0x1B cactus plants 0x1C..0x1F sub-tropical climate, non-rainforest, non-desert trees 0x20..0x28 toyland trees

• L2:

  7..6:	amount of snow or desert (desert always set 3 in TTD)
  5..4:	0 = on grass, 1 = on rough land, 2 = on snow or desert
  3..0:	update counter, incremented on every periodic processing, on wraparound the growth status is updated (or, if it's 3, a random action is taken)

• L1: owner of the trees (normally 0x10)

Class 5 - Stations

• L8: (planned build year)
• L7: reversed for PBS usage
• L6: NewStations random bits
• L5: Tile type:

  0x00..0x07  railway station  (bit 0 set Y else X direction)
              00..01  open platform
              02..03  open platform with station building
              04..07  roofed platform
  0x08..0x33  large airport
              0B,21,22 pad 1, pad 3, pad 2
              16..1A  runway middle, 1A runway ending
              1C      control tower
              20      hangar
              27..32  radar (animated)
              33      transmitter
  0x34..0x41  small airport
              3A..3D wind meter (animated)
              3E..40 runway: south,middle,north
              41     hangar
  0x42        heliport
  0x43..0x46  lorry loading area; exits: NE,SE,SW,NW
  0x47..0x4A  bus station; exits: NE,SE,SW,NW
  0x4B        oilfield
  0x4C..0x51  ship dock; coast parts SW,NW,NE,SE; water parts: 0x50 = X direction, 0x51 = Y direction
  0x52        buoy
  0x53..0x54  busstop
  0x55..0x56  tramstop
  0x57..0x58  truckstop
  0x59..0x5A  cargotramstop
  

• L3:

  15..8:	Newstations stationgrfid
  7:	PBS State
  7:	For stops the road belongs to a town
  6..4:	unknown/unused
  3..0:	Track type of railway stations, otherwise must be 0.
  0:	Set if buoy is in a seelevel canal

• L2: Index into the array of stations
• L1: owner of the station

Class 6 - Water & Canals

• L7: unused
• L6: random byte for canals/river
• L5: Tile type:

  0x00  water
  0x01  coast or riverbank
  0x02  canals: lock/lift
  0x03  river rapids
  0x80  ship depot, NE part (X direction)
  0x81  ship depot, SW part (X direction)
  0x82  ship depot, NW part (Y direction)
  0x83  ship depot, SE part (Y direction)
  

• L3:

  15..2:	unused
  1..0:	canals/river type: 1 = canals, 3 = rivers Not stored fo height > 0 in old TTDPatch versions

• L2: canals, type of locks (valid 0x00..0x0B) if L5 set to 0x02
• L1: owner of the tile, usually 0x11 or owner of depot

Class 7 - Bordertiles

Border tiles are invisible tiles to prevent algorithms to warparound. (they are added at the south edges of the map), some TTD functions accidentally overwrite bits there!

Class 8 - Industry

• L7: Newindustries random triggers activated so far
• L6: Newindustries random bits
• L5: Tile type (valid 00..AE) (not the same as in the array of industries, substitute type for newindustries):

  0x00..0x06  coal mine         0x00 wheel tower,
                                0x01 wheel tower animated, state in L1 bits 5..0; L1 bit 6 set = sound generated
  0x07..0x0A  power station     0x08 chimney,
                                0x0A transformer with animation progress in L1 bits 5..2 (valid range 0..7)
  0x0B..0x0F  sawmill
  0x10..0x11  forest            0x11 trees cut down
  0x12..0x17  oil refinery
  0x18..0x1C  oil rig
  0x1D..0x20  oil wells         0x1D not animated,
                                0x1E..0x20 with various stages of animation; progress of animation in L1 bits 1..0
  0x21..0x26  farm
  0x27..0x2A  factory (temperate climate)
  0x2B..0x2E  printing works
  0x2F..ßx33  copper ore mine   0x2F wheel tower, 
                                0x30 wheel tower animated, state in L1 bits 5..0; L1 bit 6 set = sound generated 
                                0x31 chimney
  0x34..0x39  steel mill
  0x3A..0x3B  bank (temperate climate)
  0x3C..0x3F  food processing plant
  0x40..0x47  paper mill
  0x48..0x58  gold mine         0x4F wheel tower,
                                0x58 wheel tower animated, state in L1 bits 5..0; L1 bit 6 set = sound generated
  0x59..0x5A  bank (sub-arctic or sub-tropical climate)
  0x5B..0x63  diamond mine
  0x64..0x73  iron ore mine
  0x74        fruit plantation
  0x75        rubber plantation
  0x76..0x77  water supply
  0x78        water tower
  0x79..0x7C  factory (sub-tropical climate)
  0x7D..0x80  lumber mill
  0x81..0x82  candyfloss forest 0x82 candyfloss 'trees' cut down
  0x83..0x86  sweet factory
  0x87..0x88  battery farm      0x88 batteries 'reaped'
  0x89        cola wells
  0x8A..0x8D  toy shop
  0x8E..0x93  toy factory       0x8F animated, state in low byte L3 (valid 0x00..0x31) uses L3 high byte, see note.
  0x94..0x9B  plastic fountains (various stages of cyclic animation)
  0x9C..0x9F  fizzy drink factory
  0xA0..0xA3  bubble generator
                                0xA1  generators
                                0xA2..bubble capture facility, animation state in low byte of L3 (valid 0x00..0x27)
  0xA4..0xA6  toffee quarry     0xA5  animated, state in low byte L3 (valid range 0x00..0x45)
  0xA7..0xAE  sugar mine        0xAE  animated, state in low byte L3 (valid range 0x00..0x5F)
  
  Note for 0x8F toy factory:
  Tile animation is started (high byte of L3 zeroed) on the periodic processing if industry array field 2C is nonzero.
  While it is in progress the high byte of L3 holds the number of animation cycles that have already taken place;
  when this number reaches 8 the animation is stopped.
  
  

• L3:

  15..8:	Toy factory: Number of animation cycles that have already taken place; when this number reaches 8 the animation is stopped. (depends on the industry array field 2C)
  15..8:	Newindustries: new type (zero if old type) The toy factories will only run the first animation with newindustries enabled without touching this.
  7..0:	Toyland industries: Animation state (range of valid stages depend on tile type)

• L2: Index into the array of industries
• L1:

  7:	set = construction finished
  6:	set = sound already generated
  5..0:	Animation state
  5..2:	Transformer (0x0A): Animation state (valid range 0..7)
  4..2:	construction counter, for buildings under construction incremented on every periodic tile processing
  1..0:	stage of construction (3 = completed)

Class 9 - Bridges & Tunnels

• L8:

  15..8:	build year for bridgeheads otherwise 0
  7..0:	type of bridge (with newbridges) otherwise 0

• L7: Higherbridges, height or enhanced tunnels

  7..0:	Height for Higherbridges
  7:	Set = Enhancetunnels
  6:	Diagonal track direction 2 present L5 bit 0-1 give tunnel direction. Diagonal track number = Direction as route bit numbers. Tunnel direction 0 (NE) 1=5, 2=2 Tunnel direction 1 (SE) 1=3, 2=5 Tunnel direction 2 (SW) 1=3, 2=4 Tunnel direction 3 (NW) 1=2, 2=4
  5:	Diagonal track direction 1 present
  4:	Set = Perpendicular track not present
  3..0:	Track type

• L6: Rail PBS or
  Abandoned roads time until being abandoned
• L5:

  7:	Set = Bridge else Tunnel
  6:	Set = Bridge middle part else bridgehead (for tunnels clear)
  5:	Set = Route under Bridge, else land or water (see 4..3) bridgeheads = south end, for tunnels clear
  4:	Tunnel: clear
  3..2:	Tunnel: 0 - railway tunnel, 1 - road tunnel
  4..3:	Bridges: If Bit 5 set transport route under bridge (0 = railway, 1 = road) else land under bridge: 0 - grass, snow or desert, 1 - water
  2..1:	Bridges: 0 - railway bridge, 1 - road bridge, 2 - aqueduct
  1..0:	Tunnel: entrance towards: 0 = NE, 1 = SE, 2 = SW, 3 = NW
  0:	Bridges: Set = Bridge in Y direction else in X direction

• L3:

  15:	Set = on snow or desert
  13..8:	advzfunctions: track route bits to xor with the perpendicular track direction
  11..8:	Tram routeing bits for custombridgeheads
  9..4:	Custombridgeheads route bits, for roads 7..4
  7..4:	Track type on the bridge, must be 0 for road bridge
  3..0:	Track type of tunnel, on bridgehead or under bridge, must be 0 for road
  0..1:	1 = Canals or 3 = river if L5 defines a water tile

• L2:

  7..4:	Bridge type: 0x00 wooden 0x01 concrete 0x02 girder, steel 0x03 suspension, concrete 0x04 suspension, steel 0x05 suspension, steel 0x06 cantilever, steel 0x07 cantilever, steel 0x08 cantilever, steel 0x09 girder, steel 0x0A tubular, steel
  3..0:	Bridge Piece for middle parts (0..5)

• L1: owner of the tile, bridgehead owner or for bridgesmiddle parts the owner of the land under it.

Class A - HQ & Landscape objects

• L7: unused
• L6: newobjects: random bits
• L5: Tile type:

  0x00  transmitter
  0x01  lighthouse
  0x02  company statue
  0x03  company-owned land
  0x04  ??
  0x05  newobject
  0x80..0x93  company hq (5 sets of 4 tiles, updated by company performance 4 times a year)
  

• L3: newobjects: word index into a newobjects array
• L2: newobjects: XY index, X in the low 4bits
• L1: owner of the tile (lighthouses and transmitters usually 0x10)