OpenTTD Landscape Internals

# HG changeset patch # User belugas # Date 1171577028 0 # Node ID 876204eb8d1e35982cb7e72041ce6cbc3afa2309 # Parent aca16b261a4e1c60f36ea8ad10a4c9d478d96707 (svn r8752) -Cleanup: Reformat, re-arrange, correct tag errors on landscape.html. No addition nor correction on actual data diff -r aca16b261a4e -r 876204eb8d1e docs/landscape.html --- a/docs/landscape.html Thu Feb 15 22:00:17 2007 +0000 +++ b/docs/landscape.html Thu Feb 15 22:03:48 2007 +0000 @@ -1,351 +1,426 @@ - + + - - - -OpenTTD Landscape Internals + + + + OpenTTD Landscape Internals + - -

Landscape

Seven attributes (counting "type_height") hold the informations - about a tile. These attributes are referred to as "type_height", +

Landscape

Seven attributes (counting "type_height") hold the informations about a tile.
+ These attributes are referred to as + "type_height", "m1", "m2", "m3", "m4", - "m5" and "m6". + "m5" and "m6".
The most important value is the class of a tile, stored in the upper 4 bits of the type_height array. The lower 4 bits are used to encode the height and - slope data. For a graphical representation of the tile-layout have a look at - Landscape grid page.

- -

The owner of a tile, as frequently associated with attribute m1, can be either players (human or AI) or "Game entities". -They are identified using: -

00 = current player
01..08 = AI or network players
0F = a town owns the tile
10 = nobody owns the tile
11 = "water" owns the tile
FF = spectator in MP or in scenario editor

- -

OTTD's class-specific periodic tile processing routine is called once every +256 ticks for each tile.

- - - - - - - + slope data.
+ For a graphical representation of the tile-layout have a look at + Landscape grid page. +

- +

The owner of a tile, as frequently associated with attribute m1, + can be either players (human or AI) or "Game entities". + They are identified using: +

Class Meaning & details of encoding

0

m5 bits 4..0: tile type: - - - - - - - - - - - - - - - -

`00`	bare land
`01`	1/3 grass
`02`	2/3 grass
`03`	full grass
`07`	rough land
`0B`	rocks
`0F`	fields; type of fields in m3 bits 3..0 (legal values: 0 through 9) - m2: Index into the array of industries (farms), INVALID_INDUSTRY (0xFFFF) if farm has been removed
`10`	1/4 snow
`11`	2/4 snow
`12`	3/4 snow
`13`	full snow
`15`	partial desert
`17`	full desert

m5 bits 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 m3 is increased, for other types the tile type in m5 is increased) -
(for snow and desert, these bits are not used, tile is updated on every periodic processing) -
m1: owner of the tile (normally 10) -
m4 bits 7..5: type of hedge on the SW border of the tile (1 through 6, or 0=none); bits 4..2: same for the SE border -

1

-m5 bit 7 clear: railway track -

m5 bits 0..5: track layout: bit set = track present: - - - - - - - -

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)

m5 bit 6 set = with signals: -

m3 bits 7..4: bit set = 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

m2 bits 7..4: bit clear = signal shows red; same bits as in m3
OpenTTD bits in m4: - - - - - - - -
bits 1..0: type of signal:
00: normal signals
01: pre-signals
10: exit-signals
11: combo-signals
bit 2: set = semaphore signals, clear = light signals

m1: owner of the track -

m2 bits 0..3: - - - - - - - - - - - - - - -

`0`	on bare land
`1`	on grass, no fences
`2`	fence on the NW side
`3`	fence on the SE side
`4`	fences on the NW and SE sides
`5`	fence on the NE side
`6`	fence on the SW side
`7`	fences on the NE and SW sides
`8`	fence on the E side (track in the W corner)
`9`	fence on the W side (track in the E corner)
`A`	fence on the S side (track in the N corner)
`B`	fence on the N side (track in the S corner)
`C`	on snow or desert

m3 bits 0..3 = track type: 0 - conventional railway, 1 - electrified railway, 2 - monorail, 3 - maglev -

-m5 bits 7 and 6 set: railway depot / checkpoints -

m5 value C0..C3: railway depot -
m5 bits 1..0 - direction: exit towards: 00 = NE, 01 = SE, 02 = SW, 03 = NW
m5 value C4..C5: checkpoint -
bit 0: clear = in X direction, set = in Y direction -
-
-
m1: owner of the depot / checkpoint
m2: For waypoints, index into the array of waypoints.
m3 bits 0..3 = track type
m4 bits 0..3 = ground type, as per m2 bits 0..3 for railway tiles.

2

-m5 bits 7..4 clear: road -

m5 bits 3..0: road layout: bit set = road piece present: - - - - - -
bit 0: NW piece
bit 1: SW piece
bit 2: SE piece
bit 3: NE piece
m1: owner of the road
m2: Index into the array of towns, 0 for non-town roads
m4 bits 0..3: counter for the roadworks
m4 bits 4..6: 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 works
m4 bit 7 set = on snow or desert

-m5 bit 4 set, bits 7..5 clear: level crossing -

m5 bit 3: clear - road in the X direction, set - road in the Y direction (railway track always perpendicular)
m5 bit 2: set if crossing lights are on
m1: owner of the railway track
m2: Index into the array of towns, 0 for non-town roads
m3 bits 0..7: owner of the road
m4 bits 3..0: track type
m4 bits 4..6: 0 - on bare land, 1 - on grass, 2 or higher - paved
m4 bit 7 set = on snow or desert

-m5 bit 5 set: road depot -

m5 bits 3..0 - direction: exit towards: 0 = NE, 1 = SE, 2 = SW, 3 = NW
m1: owner of the depot
m4 bit 7 set = on snow or desert (not displayed, but set internally)

+ + + + + + +

`00`	current player
`01..08`	AI or network players
`0F`	a town owns the tile
`10`	nobody owns the tile
`11`	"water" owns the tile
`FF`	spectator in MP or in scenario editor

- 3 -Town building -

m2: Index into the array of towns

m4: town building type: -

Note: In the climate list, 'sub-arctic' means below the snow line, and 'snow' means above the snow line in the sub-arctic climate.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Type	Size	Climates	Description
`00`	1×1	temperate	tall office block
`01`	1×1	temperate	office block
`02`	1×1	temperate	small block of flats
`03`	1×1	temperate	church
`04`	1×1	temperate, sub-arctic, sub-tropical	large office block
`05`	1×1	snow	large office block
`06`	1×1	temperate	town houses
`07`..`08`	1×2	temperate	hotel
`09`	1×1	temperate, sub-arctic, sub-tropical	statue
`0A`	1×1	temperate, sub-arctic, sub-tropical	fountain
`0B`	1×1	temperate	park (with a pond)
`0C`	1×1	temperate	park (with an alley)
`0D`	1×1	temperate	office block
`0E`..`10`	1×1	temperate	various types of shops and offices
`11`	1×1	temperate, sub-arctic, sub-tropical	modern office building
`12`	1×1	temperate	warehouse
`13`	1×1	temperate	office block (with spiral stairway on the side)
`14`..`17`	2×2	temperate	stadium
`18`	1×1	temperate	old houses
`19`	1×1	temperate	cottages
`1A`	1×1	temperate	houses
`1B`	1×1	temperate	flats
`1C`	1×1	temperate	tall office block
`1D`	1×1	temperate	shops and offices
`1E`	1×1	temperate, sub-tropical	shops and offices
`1F`	1×1	temperate	theatre
`20`..`23`	2×2	temperate, sub-arctic, sub-tropical	stadium (modern style)
`24`	1×1	temperate, sub-arctic, sub-tropical	offices (the modern 'vertical tube' style)
`25`	1×1	sub-arctic	houses
`26`	1×1	snow	houses
`27`	1×1	temperate	cinema
`28`..`2B`	2×2	temperate	shopping mall
`2C`	1×1	sub-arctic	flats
`2D`	1×1	snow	flats
`2E`	1×1	sub-arctic	houses
`2F`	1×1	snow	houses
`30`	1×1	sub-arctic	houses
`31`	1×1	snow	houses
`32`	1×1	sub-arctic, sub-tropical	tall office block
`33`	1×1	snow	tall office block
`34`	1×1	sub-arctic	tall office block
`35`	1×1	snow	tall office block
`36`	1×1	sub-arctic, sub-tropical	tall office block
`37`	1×1	snow	tall office block
`38`	1×1	sub-arctic	houses
`39`	1×1	snow	houses
`3A`	1×1	sub-arctic	shops and offices
`3B`	1×1	snow	shops and offices
`3C`	1×1	sub-arctic	church
`3D`	1×1	snow	church
`3E`	1×1	sub-arctic	houses
`3F`	1×1	snow	houses
`40`	1×1	sub-arctic	shops and offices
`41`	1×1	snow	shops and offices
`42`..`43`	1×2	sub-arctic	hotel
`44`..`45`	1×2	snow	hotel
`46`	1×1	sub-arctic, sub-tropical	shops and offices
`47`	1×1	snow	shops and offices
`48`	1×1	sub-arctic	tall office block
`49`	1×1	snow	tall office block
`4A`..`4B`	2×1	sub-arctic	tall office block
`4C`..`4D`	2×1	snow	tall office block
`4E`	1×1	sub-tropical	houses (with a tree in a corner)
`4F`, `50`	1×1	sub-tropical	houses
`51`	1×1	sub-tropical	houses (suburb-type)
`52`	1×1	sub-tropical	flats
`53`	1×1	sub-tropical	church
`54`	1×1	sub-tropical	houses (with two trees in front)
`55`, `56`	1×1	sub-tropical	flats
`57`..`58`	2×1	sub-tropical	tall office block
`59`	1×1	sub-tropical	flats
`5A`	1×1	sub-tropical	tall office block
`5B`	1×1	toyland	church
`5C`..`61`	1×1	toyland	various types of toyland houses
`62`	1×1	toyland	tall office block
`63`..`64`	1×2	toyland	houses ('shoe' style)
`65`	1×1	toyland	tall office block
`66`	1×1	toyland	igloo
`67`	1×1	toyland	tepees
`68`, `69`	1×1	toyland	shops and offices
`6A`	1×1	toyland	tall office block
`6B`	1×1	toyland	statue
`6C`	1×1	toyland	teapot-house
`6D`	1×1	toyland	piggy-bank

m3 bits 7..6: stage of construction (3 = completed)
m5 bits 2..0: construction counter, for buildings under construction incremented on every periodic tile processing, on wraparound the stage of construction in m3 is increased
for large office blocks (types 04 and 05): -
- m1 bits 6..0: position of the lift
- m1 bit 7: if set the lift is moving
- m5 bit 7: if set then m5 bits 5..0 hold the destination floor of the lift, which could be 0..6, except 1, so the building has 6 effective floors. This due to the fact that the first floor is 2 'normal' floors high. One 'normal' floor has a height of 6 lift positions.

- +

OTTD's class-specific periodic tile processing routine is called once every +256 ticks for each tile.

- 4 -Trees -

m5 bits 7..6: number of trees minus one
m5 bits 2..0: growth status: 0..2 - one of trees is growing, 3 - all trees are fully grown, 4..6 - one of trees is withering
m3 bits 7..0: type of trees: - - - - - - - -
00..0B temperate climate trees
0C..13 sub-arctic climate trees
14..1A rainforest trees
1B cactus plants
1C..1F sub-tropical climate, non-rainforest, non-desert trees
20..28 toyland trees
-(note: the actually displayed set of trees depends on both type and number of trees) -
m4 bits 7..5: type of hedge on the SW border of the tile (1 through 6, or 0=none)
m4 bits 4..2: type of hedge on the SE border of the tile (1 through 6, or 0=none)
m2 bits 5..4: - - - - -
0 on grass
1 on rough land
2 on snow or desert; m2 bits 7..6 - amount of snow or desert (for desert always set to 3 in TTD) -
m2 bits 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)
m1: owner (normally 10)

- + + - + - + + + + - + + + + - -

Class Meaning & details of encoding

5

-Station tile -

m5: tile type: - - - + + + + + + + + + + + + + + + + + + + + + + + + + + + - + + + + + + + +

00..07 railway station -
00..01 - open platform, 02..03 - open platform with station building, 04....07 - roofed platform -
bit 0: clear = in X direction, set = in Y direction -

08..33

large airport - - - - - - - - - - -

`0B`	pad 1
`16`..`19`	runway middle
`1A`	runway ending
`1C`	control tower
`20`	hangar
`21`	pad 3
`22`	pad 2
`27`..`32`	radar (animated)
`33`	transmitter

-The initial layout of a large airport is (rows in Y direction, columns in X direction): +

0

m5 bits 4..0: tile type: + + + + + + + + + + + + + + +

`00`	bare land
`01`	1/3 grass
`02`	2/3 grass
`03`	full grass
`07`	rough land
`0B`	rocks
`0F`	fields; type of fields in m3 bits 3..0 (legal values: 0 through 9) + m2: Index into the array of industries (farms), INVALID_INDUSTRY (0xFFFF) if farm has been removed
`10`	1/4 snow
`11`	2/4 snow
`12`	3/4 snow
`13`	full snow
`15`	partial desert
`17`	full desert

m5 bits 7..5: update counter, incremented on every periodic processing for tile types, + other than 03, 07, 0B, 10 and above.
+ on wraparound, the tile is updated (for fields, the type of fields in m3 is increased, for other types the tile type in m5 is increased).
+ For snow and desert, these bits are not used, tile is updated on every periodic processing. +
m1: owner of the tile (normally 10)
m4 bits 7..5: type of hedge on the SW border of the tile (1 through 6, or 0=none); bits 4..2: same for the SE border

1

m5 bit 7 clear: railway track +

m5 bits 0..5: track layout: bit set = track present: + + + + + + + +

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)

m5 bit 6 set = with signals: +

m3 bits 7..4: bit set = 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

m2 bits 7..4: bit clear = signal shows red; same bits as in m3
OpenTTD bits in m4: + + + + + + + +
bits 1..0: type of signal:
00: normal signals
01: pre-signals
10: exit-signals
11: combo-signals
bit 2: set = semaphore signals, clear = light signals
+

m1: owner of the track

m2 bits 0..3: + + + + + + + + + + + + + + +

`0`	on bare land
`1`	on grass, no fences
`2`	fence on the NW side
`3`	fence on the SE side
`4`	fences on the NW and SE sides
`5`	fence on the NE side
`6`	fence on the SW side
`7`	fences on the NE and SW sides
`8`	fence on the E side (track in the W corner)
`9`	fence on the W side (track in the E corner)
`A`	fence on the S side (track in the N corner)
`B`	fence on the N side (track in the S corner)
`C`	on snow or desert

m3 bits 0..3 = track type: + + + + + +
0 conventional railway
1 electrified railway
2 monorail
3 maglev
+

m5 bits 7 and 6 set: railway depot / checkpoints +
- m5 value C0..C3: railway depot + + + + + + + +
  m5 bits 1..0
  direction: exit towards:
  00 NE
  01 SE
  02 SW
  03 NW
  +
- m5 value C4..C5: checkpoint + + + + +
  bit 0
  clear in X direction
  set in Y direction
  +
- m1: owner of the depot / checkpoint
- m2: For waypoints, index into the array of waypoints.
- m3 bits 0..3 = track type
- m4 bits 0..3 = ground type, as per m2 bits 0..3 for railway tiles.
+

2

m5 bits 7..4 clear: road +
- m5 bits 3..0: road layout: bit set = road piece present: + + + + + +
  bit 0: NW piece
  bit 1: SW piece
  bit 2: SE piece
  bit 3: NE piece
  +
- m1: owner of the road
- m2: Index into the array of towns, 0 for non-town roads
- m4 bits 0..3: counter for the roadworks
- m4 bits 4..6: + + + + + + + + +
  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 works
  +
- m4 bit 7 set = on snow or desert
+
m5 bit 4 set, bits 7..5 clear: level crossing +
- m5 bit 3: clear - road in the X direction, set - road in the Y direction (railway track always perpendicular)
- m5 bit 2: set if crossing lights are on
- m1: owner of the railway track
- m2: Index into the array of towns, 0 for non-town roads
- m3 bits 0..7: owner of the road
- m4 bits 3..0: track type
- m4 bits 4..6: 0 - on bare land, 1 - on grass, 2 or higher - paved
- m4 bit 7 set = on snow or desert
+
m5 bit 5 set: road depot +
- m5 bits 3..0 - direction: exit towards: 0 = NE, 1 = SE, 2 = SW, 3 = NW
- m1: owner of the depot
- m4 bit 7 set = on snow or desert (not displayed, but set internally)
+

3

Town building +

m2: Index into the array of towns

m4: town building type:
+ Note: In the climate list, 'sub-arctic' means below the snow line, and 'snow' means above the snow line in the sub-arctic climate. + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

Type	Size	Climates	Description
`00`	1×1	temperate	tall office block
`01`	1×1	temperate	office block
`02`	1×1	temperate	small block of flats
`03`	1×1	temperate	church
`04`	1×1	temperate, sub-arctic, sub-tropical	large office block
`05`	1×1	snow	large office block
`06`	1×1	temperate	town houses
`07`..`08`	1×2	temperate	hotel
`09`	1×1	temperate, sub-arctic, sub-tropical	statue
`0A`	1×1	temperate, sub-arctic, sub-tropical	fountain
`0B`	1×1	temperate	park (with a pond)
`0C`	1×1	temperate	park (with an alley)
`0D`	1×1	temperate	office block
`0E`..`10`	1×1	temperate	various types of shops and offices
`11`	1×1	temperate, sub-arctic, sub-tropical	modern office building
`12`	1×1	temperate	warehouse
`13`	1×1	temperate	office block (with spiral stairway on the side)
`14`..`17`	2×2	temperate	stadium
`18`	1×1	temperate	old houses
`19`	1×1	temperate	cottages
`1A`	1×1	temperate	houses
`1B`	1×1	temperate	flats
`1C`	1×1	temperate	tall office block
`1D`	1×1	temperate	shops and offices
`1E`	1×1	temperate, sub-tropical	shops and offices
`1F`	1×1	temperate	theatre
`20`..`23`	2×2	temperate, sub-arctic, sub-tropical	stadium (modern style)
`24`	1×1	temperate, sub-arctic, sub-tropical	offices (the modern 'vertical tube' style)
`25`	1×1	sub-arctic	houses
`26`	1×1	snow	houses
`27`	1×1	temperate	cinema
`28`..`2B`	2×2	temperate	shopping mall
`2C`	1×1	sub-arctic	flats
`2D`	1×1	snow	flats
`2E`	1×1	sub-arctic	houses
`2F`	1×1	snow	houses
`30`	1×1	sub-arctic	houses
`31`	1×1	snow	houses
`32`	1×1	sub-arctic, sub-tropical	tall office block
`33`	1×1	snow	tall office block
`34`	1×1	sub-arctic	tall office block
`35`	1×1	snow	tall office block
`36`	1×1	sub-arctic, sub-tropical	tall office block
`37`	1×1	snow	tall office block
`38`	1×1	sub-arctic	houses
`39`	1×1	snow	houses
`3A`	1×1	sub-arctic	shops and offices
`3B`	1×1	snow	shops and offices
`3C`	1×1	sub-arctic	church
`3D`	1×1	snow	church
`3E`	1×1	sub-arctic	houses
`3F`	1×1	snow	houses
`40`	1×1	sub-arctic	shops and offices
`41`	1×1	snow	shops and offices
`42`..`43`	1×2	sub-arctic	hotel
`44`..`45`	1×2	snow	hotel
`46`	1×1	sub-arctic, sub-tropical	shops and offices
`47`	1×1	snow	shops and offices
`48`	1×1	sub-arctic	tall office block
`49`	1×1	snow	tall office block
`4A`..`4B`	2×1	sub-arctic	tall office block
`4C`..`4D`	2×1	snow	tall office block
`4E`	1×1	sub-tropical	houses (with a tree in a corner)
`4F`, `50`	1×1	sub-tropical	houses
`51`	1×1	sub-tropical	houses (suburb-type)
`52`	1×1	sub-tropical	flats
`53`	1×1	sub-tropical	church
`54`	1×1	sub-tropical	houses (with two trees in front)
`55`, `56`	1×1	sub-tropical	flats
`57`..`58`	2×1	sub-tropical	tall office block
`59`	1×1	sub-tropical	flats
`5A`	1×1	sub-tropical	tall office block
`5B`	1×1	toyland	church
`5C`..`61`	1×1	toyland	various types of toyland houses
`62`	1×1	toyland	tall office block
`63`..`64`	1×2	toyland	houses ('shoe' style)
`65`	1×1	toyland	tall office block
`66`	1×1	toyland	igloo
`67`	1×1	toyland	tepees
`68`, `69`	1×1	toyland	shops and offices
`6A`	1×1	toyland	tall office block
`6B`	1×1	toyland	statue
`6C`	1×1	toyland	teapot-house
`6D`	1×1	toyland	piggy-bank

m3 bits 7..6: stage of construction (3 = completed)
m5 bits 2..0: construction counter, for buildings under construction incremented on every periodic tile processing
+ On wraparound the stage of construction in m3 is increased +
for large office blocks (types 04 and 05): +
- m1 bits 6..0: position of the lift
- m1 bit 7: if set the lift is moving
- m5 bit 7: if set then m5 bits 5..0 hold the destination floor of the lift, which could be 0..6, except 1.
  + So the building has 6 effective floors. This is due to the fact that the first floor is 2 'normal' floors high.
  + One 'normal' floor has a height of 6 lift positions.
+

4

Trees +

m5 bits 7..6: number of trees minus one
m5 bits 2..0: growth status: 0..2 - one of trees is growing, 3 - all trees are fully grown, 4..6 - one of trees is withering
m3 bits 7..0: type of trees: + + + + + + + +
00..0B temperate climate trees
0C..13 sub-arctic climate trees
14..1A rainforest trees
1B cactus plants
1C..1F sub-tropical climate, non-rainforest, non-desert trees
20..28 toyland trees
+ Note: the actually displayed set of trees depends on both type and number of trees +
m4 bits 7..5: type of hedge on the SW border of the tile (1 through 6, or 0=none)
m4 bits 4..2: type of hedge on the SE border of the tile (1 through 6, or 0=none)
m2 bits 5..4: + + + + +
0 on grass
1 on rough land
2 on snow or desert; m2 bits 7..6 - amount of snow or desert (for desert always set to 3 in TTD)
+
m2 bits 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)
m1: owner (normally 10)

5

Station tile +

m5: tile type: + + + + + + + - - - - +

00..07

railway station + + + + + +

`00`..`01`	open platform
`02`..`03`	open platform with station building
`04`....`07`	roofed platform
bit 0: clear = in X direction, set = in Y direction

08..33

large airport + + + + + + + + + + + -

0B pad 1

16..19 runway middle

1A runway ending

1C control tower

20 hangar

21 pad 3

22 pad 2

27..32 radar (animated)

33 transmitter

The initial layout of a large airport is (rows in Y direction, columns in X direction):

 1F 1B 1E 33 26 1A
 09 24 0B 0C 0D 16
@@ -354,266 +429,303 @@
 09 08 14 13 12 19
 20 0A 15 1C 27 1A

34..41

small airport - - - - - - -

`3A`..`3D`	field with the wind meter (animated)
`3E`	runway south ending
`3F`	runway middle
`40`	runway north ending
`41`	hangar

-The initial layout of a small airport is (rows in Y direction, columns in X direction): +

34..41

small airport + + + + + + + - - - - - - -

`3A`..`3D`	field with the wind meter (animated)
`3E`	runway south ending
`3F`	runway middle
`40`	runway north ending
`41`	hangar
The initial layout of a small airport is (rows in Y direction, columns in X direction): 36 3A 40 35 39 3F 34 38 3F 41 37 3E -
`42`	heliport
`43`..`46`	lorry loading area; -exit towards: `43` - NE, `44` - SE, `45` - SW, `46` - NW -
`47`..`4A`	bus station; -exit towards: `47` - NE, `48` - SE, `49` - SW, `4A` - NW -
`4B`	oilfield
`4C`..`51`	ship dock; -`4C` - SW coast part, `4D` - NW coast part, `4E` - NE coast part, `4F` - SE coast part, `50` - X direction water part, `51` - Y direction water part -
`52`	buoy
`53`..`A7`	used by RichK's larger airports -

- -

m1: owner of the station

m2: index into the array of stations

m3 bits 0..3: track type for railway stations, must be 0 for all the other stations

m3 bits 4..7: persistent random data for newstations

m4 = custom station id; 0 means standard graphics

- -

6

m5: tile type: - - - - -

00 water

01 coast or riverbank

10..1B

canal locks - -

`10`	middle part, (SW-NE direction) -
`11`	middle part, (NW-SE direction) -
`12`	middle part, (NE-SW direction) -
`13`	middle part, (SE-NW direction) -
`14`	lower part, (SW-NE direction) -
`15`	lower part, (NW-SE direction) -
`16`	lower part, (NE-SW direction) -
`17`	lower part, (SE-NW direction) -
`18`	upper part, (SW-NE direction) -
`19`	upper part, (NW-SE direction) -
`1A`	upper part, (NE-SW direction) -
`1B`	upper part, (SE-NW direction) -

80..83

ship depots - - - -

`80`	ship depot, NE part (X direction) -
`81`	ship depot, SW part (X direction) -
`82`	ship depot, NW part (Y direction) -
`83`	ship depot, SE part (Y direction) - -

m1: owner (for water and coasts normally 11)

7

-Void -

-Tiles of this class form an invisible, one tile wide border at the south (bottom) edges of the map, so as to protect several algorithms from the consequences of a wraparound at the edges. -

8

-Industry tile -

m5: type: -
(note: this is not the same as the industry type, which is stored in the array of industries) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

00..06

coal mine - - - -

`00`	wheel tower when not animated
`01`	wheel tower when animated; animation state in m3 bits 5..0; m3 bit 6 set = sound already generated

07..0A

power station - - - -

`08`	chimney
`0A`	transformer; animation progress in m3(valid range `0`..`7`)

0B..0F sawmill

10..11

forest - - -

`11`	trees cut down

12..17 oil refinery

18..1C oil rig

1D..20

oil wells - - - -

`1D`	not animated
`1E`..`20`	various stages of animation; progress of animation in m3

21..26 farm

27..2A factory (temperate climate)

2B..2E printing works

2F..33

copper ore mine - - - - -

`2F`	wheel tower when not animated
`30`	wheel tower when animated; animation state in m3 bits 5..0; m3 bit 6 set = sound already generated
`31`	chimney

34..39 steel mill

3A..3B bank (temperate climate)

3C..3F food processing plant

40..47 paper mill

48..58

gold mine - - - -

`4F`	wheel tower when not animated
`58`	wheel tower when animated; animation state in m3 bits 5..0; m3 bit 6 set = sound already generated

59..5A bank (sub-arctic or sub-tropical climate)

5B..63 diamond mine

64..73 iron ore mine

74 fruit plantation

75 rubber plantation

76..77 water supply

78 water tower

79..7C factory (sub-tropical climate)

7D..80 lumber mill

81..82

candyfloss forest - - -

`82`	candyfloss 'trees' cut down

83..86 sweet factory

87..88

battery farm - - -

`88`	batteries 'reaped'

89 cola wells

8A..8D toy shop

8E..93

toy factory - - - - -

`8F`	Animated part; animation state in m3 (valid range `00`..`31`) - Tile animation is started (m4 zeroed) on the periodic processing. - While the animation is in progress, m4 holds the number - of animation cycles that have already taken place; when - this number reaches 8 the animation is stopped

94..9B plastic fountains (various stages of cyclic animation)

9C..9F fizzy drink factory

A0..A3

bubble generator - - - -

`A1`	generators
`A2`	bubble capture facility; animation state in m3 (valid range `00`..`27`)

A4..A6

toffee quarry - - -

`A5`	animated part; animation state in m3 (valid range `00`..`45`)

A7..AE

sugar mine - - -

`AE`	animated part; animation state in m3 (valid range `00`..`5F`)

m2: index into the array of industries -
m1 bit 7: clear = under construction -
- m1 bits 4..2: construction counter, for buildings under construction incremented on every periodic tile processing -
- m1 bits 1..0: stage of construction (3 = completed), incremented when the construction counter wraps around -
  the meaning is different for some animated tiles which are never under construction (types 01, 1E..20, 30, 58; see above) -

42 heliport

43..46

+ lorry loading area : exit towards: + + + + + +

`43`	NE
`44`	SE
`45`	SW
`46`	NW

47..4A

+ bus station : exit towards: + + + + + +

`47`	NE
`48`	SE
`49`	SW
`4A`	NW

4B oilfield

4C..51

ship dock + + + + + + + +

`4C`	SW coast part
`4D`	NW coast part
`4E`	NE coast part
`4F`	SE coast part
`50`	X direction water part
`51`	Y direction water part

52 buoy

53..A7 used by RichK's larger airports

m1: owner of the station
m2: index into the array of stations
m3 bits 0..3: track type for railway stations, must be 0 for all the other stations
m3 bits 4..7: persistent random data for newstations
m4: custom station id; 0 means standard graphics

9

-m5 bits 7..4 clear: tunnel entrance/exit -

m5 bits 3..2: 0 - railway tunnel, 1 - road tunnel
m5 bits 1..0 - direction: entrance towards: 0 = NE, 1 = SE, 2 = SW, 3 = NW
m1: owner of the tunnel
m3 bits 3..0 = track type for railway tunnel, must be 0 for road tunnel
m4 bit 7 set = on snow or desert

-m5 bit 7 set: bridge ramp -

m1: owner of the bridge
m3 bits 3..0 = type of track on the bridge, must be 0 for road bridge
m5 bits 3..2: 0 - railway bridge, 1 - road bridge
m5 bit 0..1: DiagDirection onto the bridge

m2 bits 7..4: bridge type: - - - - - - - - - - - - - -

Type	Max. speed (mph)	Description
`0`	20	wooden
`1`	30	concrete
`2`	40	girder, steel
`3`	50	suspension, concrete
`4`	60	suspension, steel
`5`	70	suspension, steel
`6`	100	cantilever, steel
`7`	130	cantilever, steel
`8`	150	cantilever, steel
`9`	160	girder, steel
`A`	200	tubular, steel

m4 bit 7 set = on snow or desert

6

m5: tile type: + + + + + +

00 water

01 coast or riverbank

10..1B

canal locks + + + + + + + + + + + + + +

`10`	middle part, (SW-NE direction)
`11`	middle part, (NW-SE direction)
`12`	middle part, (NE-SW direction)
`13`	middle part, (SE-NW direction)
`14`	lower part, (SW-NE direction)
`15`	lower part, (NW-SE direction)
`16`	lower part, (NE-SW direction)
`17`	lower part, (SE-NW direction)
`18`	upper part, (SW-NE direction)
`19`	upper part, (NW-SE direction)
`1A`	upper part, (NE-SW direction)
`1B`	upper part, (SE-NW direction)

80..83

ship depots + + + + + +

`80`	ship depot, NE part (X direction)
`81`	ship depot, SW part (X direction)
`82`	ship depot, NW part (Y direction)
`83`	ship depot, SE part (Y direction)

m1: owner (for water and coasts normally 11)

A

m5: tile type: - - - - - - -
00 transmitter
01 lighthouse
02 company statue
03 company-owned land
80..93 company headquarters (5 sets of 4 tiles each, updated quarterly depending on the company performance)
-
m1: owner of the object (for lighthouses and transmitters normally 10)

7

Void +

Tiles of this class form an invisible, one tile wide border at the south (bottom) edges of the map,
+ so as to protect several algorithms from the consequences of a wraparound at the edges. +

-Classes B through F are reserved. The presence of a tile in one of the reserved classes will crash OTTD. -

+ + 8 + Industry tile +

m5: type:
+ (note: this is not the same as the industry type, which is stored in the array of industries) + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +

00..06

coal mine + + + +

`00`	wheel tower when not animated
`01`	wheel tower when animated animation state in m3 bits 5..0; m3 bit 6 set = sound already generated

07..0A

power station + + + +

`08`	chimney
`0A`	transformer; animation progress in m3(valid range `0`..`7`)

0B..0F sawmill

10..11

forest + + +

`11`	trees cut down

12..17 oil refinery

18..1C oil rig

1D..20

oil wells + + + +

`1D`	not animated
`1E`..`20`	various stages of animation; progress of animation in m3

21..26 farm

27..2A factory (temperate climate)

2B..2E printing works

2F..33

copper ore mine + + + + +

`2F`	wheel tower when not animated
`30`	wheel tower when animated; animation state in m3 bits 5..0; m3 bit 6 set = sound already generated
`31`	chimney

34..39 steel mill

3A..3B bank (temperate climate)

3C..3F food processing plant

40..47 paper mill

48..58

gold mine + + + +

`4F`	wheel tower when not animated
`58`	wheel tower when animated; animation state in m3 bits 5..0; m3 bit 6 set = sound already generated

59..5A bank (sub-arctic or sub-tropical climate)

5B..63 diamond mine

64..73 iron ore mine

74 fruit plantation

75 rubber plantation

76..77 water supply

78 water tower

79..7C factory (sub-tropical climate)

7D..80 lumber mill

81..82

candyfloss forest + + +

`82`	candyfloss 'trees' cut down

83..86 sweet factory

87..88

battery farm + + +

`88`	batteries 'reaped'

89 cola wells

8A..8D toy shop

8E..93

toy factory + + + +

`8F`	Animated part; animation state in m3 (valid range `00`..`31`) + Tile animation is started (m4 zeroed) on the periodic processing. + While the animation is in progress, m4 holds the number + of animation cycles that have already taken place. + when this number reaches 8 the animation is stopped. +

94..9B plastic fountains (various stages of cyclic animation)

9C..9F fizzy drink factory

A0..A3

bubble generator + + + +

`A1`	generators
`A2`	bubble capture facility; animation state in m3 (valid range `00`..`27`)

A4..A6

toffee quarry + + +

`A5`	animated part; animation state in m3 (valid range `00`..`45`)

A7..AE

sugar mine + + +

`AE`	animated part; animation state in m3 (valid range `00`..`5F`)

m2: index into the array of industries
m1 bit 7: clear = under construction +
- m1 bits 4..2: construction counter, for buildings under construction incremented on every periodic tile processing
- m1 bits 1..0: stage of construction (3 = completed), incremented when the construction counter wraps around
  + the meaning is different for some animated tiles which are never under construction (types 01, 1E..20, 30, 58; see above)
+

+ + + + + 9 + +

m5 bits 7..4 clear: tunnel entrance/exit +
- m5 bits 3..2: 0 - railway tunnel, 1 - road tunnel
- m5 bits 1..0 - direction: entrance towards: 0 = NE, 1 = SE, 2 = SW, 3 = NW
- m1: owner of the tunnel
- m3 bits 3..0 = track type for railway tunnel, must be 0 for road tunnel
- m4 bit 7 set = on snow or desert
+

m5 bit 7 set: bridge ramp +

m1: owner of the bridge
m3 bits 3..0 = type of track on the bridge, must be 0 for road bridge
m5 bits 3..2: 0 - railway bridge, 1 - road bridge
m5 bit 0..1: DiagDirection onto the bridge

m2 bits 7..4: bridge type: + + + + + + + + + + + + + +

Type	Max. speed (mph)	Description
`0`	20	wooden
`1`	30	concrete
`2`	40	girder, steel
`3`	50	suspension, concrete
`4`	60	suspension, steel
`5`	70	suspension, steel
`6`	100	cantilever, steel
`7`	130	cantilever, steel
`8`	150	cantilever, steel
`9`	160	girder, steel
`A`	200	tubular, steel

m4 bit 7 set = on snow or desert

+ + + + + A + +

m5: tile type: + + + + + + +
00 transmitter
01 lighthouse
02 company statue
03 company-owned land
80..93 company headquarters (5 sets of 4 tiles each, updated quarterly depending on the company performance)
+
m1: owner of the object (for lighthouses and transmitters normally 10)

+ + + + Classes B through F are reserved. The presence of a tile in one of the reserved classes will crash OTTD. + -

-Original Copyright © 2003 by Marcin Grzegorczyk for TTDLX.
-Transport Tycoon and Transport Tycoon Deluxe are Copyright © by Chris Sawyer. All the other trademarks are the property of their respective owners.
+

+ Original Copyright © 2003 by Marcin Grzegorczyk for TTDLX.
+ Transport Tycoon and Transport Tycoon Deluxe are Copyright © by Chris Sawyer.
+ All the other trademarks are the property of their respective owners.
+ -

`00`..`0B`	temperate climate trees
`0C`..`13`	sub-arctic climate trees
`14`..`1A`	rainforest trees
`1B`	cactus plants
`1C`..`1F`	sub-tropical climate, non-rainforest, non-desert trees
`20`..`28`	toyland trees

`0`	on grass
`1`	on rough land
`2`	on snow or desert; m2 bits 7..6 - amount of snow or desert (for desert always set to 3 in TTD) -