# AITile Class Reference

Class that handles all tile related functions. More...

`#include <ai_tile.hpp>`

Inheritance diagram for AITile:

## Public Types
enum | ErrorMessages { ERR_TILE_BASE = AIError::ERR_CAT_TILE << AIError::ERR_CAT_BIT_SIZE, ERR_TILE_TOO_HIGH, ERR_TILE_TOO_LOW, ERR_AREA_ALREADY_FLAT, ERR_EXCAVATION_WOULD_DAMAGE }
| Error messages related to modifying tiles. More...
enum | Corner { CORNER_W = 0, CORNER_S = 1, CORNER_E = 2, CORNER_N = 3, CORNER_INVALID = 0xFF }
| Enumeration for corners of tiles. More...
enum | Slope { SLOPE_FLAT = 0x00, SLOPE_W = 1 << CORNER_W, SLOPE_S = 1 << CORNER_S, SLOPE_E = 1 << CORNER_E, SLOPE_N = 1 << CORNER_N, SLOPE_STEEP = 0x10, SLOPE_NW = SLOPE_N | SLOPE_W, SLOPE_SW = SLOPE_S | SLOPE_W, SLOPE_SE = SLOPE_S | SLOPE_E, SLOPE_NE = SLOPE_N | SLOPE_E, SLOPE_EW = SLOPE_E | SLOPE_W, SLOPE_NS = SLOPE_N | SLOPE_S, SLOPE_ELEVATED = SLOPE_N | SLOPE_E | SLOPE_S | SLOPE_W, SLOPE_NWS = SLOPE_N | SLOPE_W | SLOPE_S, SLOPE_WSE = SLOPE_W | SLOPE_S | SLOPE_E, SLOPE_SEN = SLOPE_S | SLOPE_E | SLOPE_N, SLOPE_ENW = SLOPE_E | SLOPE_N | SLOPE_W, SLOPE_STEEP_W = SLOPE_STEEP | SLOPE_NWS, SLOPE_STEEP_S = SLOPE_STEEP | SLOPE_WSE, SLOPE_STEEP_E = SLOPE_STEEP | SLOPE_SEN, SLOPE_STEEP_N = SLOPE_STEEP | SLOPE_ENW, SLOPE_INVALID = 0xFFFF }
| Enumeration for the slope-type. More...
enum | TransportType { TRANSPORT_RAIL = 0, TRANSPORT_ROAD = 1, TRANSPORT_WATER = 2, TRANSPORT_AIR = 3, TRANSPORT_INVALID = -1 }
| The different transport types a tile can have. More...
## Static Public Member Functions
static const char * | GetClassName ()
static bool | IsBuildable (TileIndex tile)
| Check if this tile is buildable, i.e.
static bool | IsBuildableRectangle (TileIndex tile, uint width, uint height)
| Check if this tile is buildable in a rectangle around a tile, with the entry in the list as top-left.
static bool | IsWaterTile (TileIndex tile)
| Checks whether the given tile is actually a water tile.
static bool | IsCoastTile (TileIndex tile)
| Checks whether the given tile is actually a coast tile.
static bool | IsStationTile (TileIndex tile)
| Checks whether the given tile is a station tile of any station.
static bool | IsSteepSlope (Slope slope)
| Check if a tile has a steep slope.
static bool | IsHalftileSlope (Slope slope)
| Check if a tile has a halftile slope.
static bool | HasTreeOnTile (TileIndex tile)
| Check if the tile has any tree on it.
static bool | IsFarmTile (TileIndex tile)
| Check if the tile is a farmland tile.
static bool | IsRockTile (TileIndex tile)
| Check if the tile is a rock tile.
static bool | IsRoughTile (TileIndex tile)
| Check if the tile is a rough tile.
static bool | IsSnowTile (TileIndex tile)
| Check if the tile is a snow tile.
static bool | IsDesertTile (TileIndex tile)
| Check if the tile is a desert tile.
static Slope | GetSlope (TileIndex tile)
| Get the slope of a tile.
static Slope | GetComplementSlope (Slope slope)
| Get the complement of the slope.
static int32 | GetHeight (TileIndex tile)
| Get the height of the north corner of a tile.
static int32 | GetMinHeight (TileIndex tile)
| Get the minimal height on a tile.
static int32 | GetMaxHeight (TileIndex tile)
| Get the maximal height on a tile.
static int32 | GetCornerHeight (TileIndex tile, Corner corner)
| Get the height of a certain corner of a tile.
static AICompany::CompanyID | GetOwner (TileIndex tile)
| Get the owner of the tile.
static bool | HasTransportType (TileIndex tile, TransportType transport_type)
| Checks whether the given tile contains parts suitable for the given TransportType.
static int32 | GetCargoAcceptance (TileIndex tile, CargoID cargo_type, int width, int height, int radius)
| Check how much cargo this tile accepts.
static int32 | GetCargoProduction (TileIndex tile, CargoID cargo_type, int width, int height, int radius)
| Checks how many tiles in the radius produces this cargo.
static int32 | GetDistanceManhattanToTile (TileIndex tile_from, TileIndex tile_to)
| Get the manhattan distance from the tile to the tile.
static int32 | GetDistanceSquareToTile (TileIndex tile_from, TileIndex tile_to)
| Get the square distance from the tile to the tile.
static bool | RaiseTile (TileIndex tile, int32 slope)
| Raise the given corners of the tile.
static bool | LowerTile (TileIndex tile, int32 slope)
| Lower the given corners of the tile.
static bool | LevelTiles (TileIndex start_tile, TileIndex end_tile)
| Level all tiles in the rectangle between start_tile and end_tile so they are at the same height.
static bool | DemolishTile (TileIndex tile)
| Destroy everything on the given tile.
static bool | PlantTree (TileIndex tile)
| Create a random tree on a tile.
static bool | PlantTreeRectangle (TileIndex tile, uint width, uint height)
| Create a random tree on a rectangle of tiles.
static bool | IsWithinTownInfluence (TileIndex tile, TownID town_id)
| Find out if this tile is within the rating influence of a town.
static TownID | GetClosestTown (TileIndex tile)
| Find the town that is closest to a tile.

## Detailed Description

Class that handles all tile related functions.

Definition at line 15 of file ai_tile.hpp.

## Member Enumeration Documentation

enum AITile::ErrorMessages

Error messages related to modifying tiles.

Enumerator:

  ERR_TILE_BASE | Base for tile related errors.
  ERR_TILE_TOO_HIGH | Tile can't be raised any higher.
  ERR_TILE_TOO_LOW | Tile can't be lowered any lower.
  ERR_AREA_ALREADY_FLAT | The area was already flat.
  ERR_EXCAVATION_WOULD_DAMAGE | There is a tunnel underneed.

Definition at line 22 of file ai_tile.hpp.

enum AITile::Corner

Enumeration for corners of tiles.

Enumerator:

  CORNER_W | West corner.
  CORNER_S | South corner.
  CORNER_E | East corner.
  CORNER_N | North corner.

Definition at line 43 of file ai_tile.hpp.

enum AITile::Slope

Enumeration for the slope-type.

This enumeration use the chars N, E, S, W corresponding the direction North, East, South and West. The top corner of a tile is the north-part of the tile.

Enumerator:

  SLOPE_FLAT | A flat tile.
  SLOPE_W | The west corner of the tile is raised.
  SLOPE_S | The south corner of the tile is raised.
  SLOPE_E | The east corner of the tile is raised.
  SLOPE_N | The north corner of the tile is raised.
  SLOPE_STEEP | Indicates the slope is steep (The corner opposite of the not-raised corner is raised two times).
  SLOPE_NW | North and west corner are raised.
  SLOPE_SW | South and west corner are raised.
  SLOPE_SE | South and east corner are raised.
  SLOPE_NE | North and east corner are raised.
  SLOPE_EW | East and west corner are raised.
  SLOPE_NS | North and south corner are raised.
  SLOPE_ELEVATED | Bit mask containing all 'simple' slopes. Does not appear as a slope.
  SLOPE_NWS | North, west and south corner are raised.
  SLOPE_WSE | West, south and east corner are raised.
  SLOPE_SEN | South, east and north corner are raised.
  SLOPE_ENW | East, north and west corner are raised.
  SLOPE_STEEP_W | A steep slope falling to east (from west).
  SLOPE_STEEP_S | A steep slope falling to north (from south).
  SLOPE_STEEP_E | A steep slope falling to west (from east).
  SLOPE_STEEP_N | A steep slope falling to south (from north).
  SLOPE_INVALID | An invalid slope.

Definition at line 59 of file ai_tile.hpp.

enum AITile::TransportType

The different transport types a tile can have.

Enumerator:

  TRANSPORT_RAIL | Tile with rail.
  TRANSPORT_ROAD | Tile with road.
  TRANSPORT_WATER | Tile with navigable waterways.
  TRANSPORT_AIR | Tile with airport.
  TRANSPORT_INVALID | Tile without any transport type.

Definition at line 89 of file ai_tile.hpp.

## Member Function Documentation

bool AITile::IsBuildable | ( | TileIndex | tile | ) | `[static]`

Check if this tile is buildable, i.e.

no things on it that needs demolishing.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if it is buildable, false if not.

Note:
  For trams you also might want to check for AIRoad::IsRoad(), as you can build tram-rails on road-tiles.

  For rail you also might want to check for AIRoad::IsRoad(), as in some cases you can build rails on road-tiles.

Definition at line 16 of file ai_tile.cpp.

References CountBits(), GetTileType(), IsValidTile(), MP_CLEAR, MP_ROAD, MP_TREES, MP_WATER, OWNER_TOWN, ROADTYPE_ROAD, and ROADTYPES_ROAD.

Referenced by IsBuildableRectangle().

bool AITile::IsBuildableRectangle | ( | TileIndex | tile,
|  | uint | width,
|  | uint | height |
| ) |  |  | `[static]`

Check if this tile is buildable in a rectangle around a tile, with the entry in the list as top-left.

Parameters:

  | tile | The tile to check on.
  | width | The width of the rectangle.
  | height | The height of the rectangle.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if it is buildable, false if not.

Definition at line 37 of file ai_tile.cpp.

References AIMap::GetTileIndex(), AIMap::GetTileX(), AIMap::GetTileY(), and IsBuildable().

bool AITile::IsWaterTile | ( | TileIndex | tile | ) | `[static]`

Checks whether the given tile is actually a water tile.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is a water tile.

Definition at line 53 of file ai_tile.cpp.

References IsTileType(), IsValidTile(), and MP_WATER.

bool AITile::IsCoastTile | ( | TileIndex | tile | ) | `[static]`

Checks whether the given tile is actually a coast tile.

Parameters:

  | tile | The tile to check.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is a coast tile.

Note:
  Building on coast tiles in general is more expensive.

Definition at line 60 of file ai_tile.cpp.

References IsTileType(), IsValidTile(), and MP_WATER.

bool AITile::IsStationTile | ( | TileIndex | tile | ) | `[static]`

Checks whether the given tile is a station tile of any station.

Parameters:

  | tile | The tile to check.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is a station tile.

Definition at line 67 of file ai_tile.cpp.

References IsTileType(), IsValidTile(), and MP_STATION.

Referenced by AIAirport::GetAirportType().

bool AITile::IsSteepSlope | ( | Slope | slope | ) | `[static]`

Check if a tile has a steep slope.

Steep slopes are slopes with a height difference of 2 across one diagonal of the tile.

Parameters:

  | slope | The slope to check on.

Precondition:
  slope != SLOPE_INVALID.

Returns:
  True if the slope is a steep slope.

Definition at line 74 of file ai_tile.cpp.

References IsSteepSlope(), SLOPE_ELEVATED, SLOPE_HALFTILE_MASK, and SLOPE_STEEP.

bool AITile::IsHalftileSlope | ( | Slope | slope | ) | `[static]`

Check if a tile has a halftile slope.

Halftile slopes appear on top of halftile foundations. E.g. the slope you get when building a horizontal railtrack on the top of a SLOPE_N or SLOPE_STEEP_N.

Parameters:

  | slope | The slope to check on.

Precondition:
  slope != SLOPE_INVALID.

Returns:
  True if the slope is a halftile slope.

Note:
  Currently there is no API function that would return or accept a halftile slope.

Definition at line 81 of file ai_tile.cpp.

References IsHalftileSlope(), SLOPE_ELEVATED, SLOPE_HALFTILE_MASK, and SLOPE_STEEP.

bool AITile::HasTreeOnTile | ( | TileIndex | tile | ) | `[static]`

Check if the tile has any tree on it.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if there is a tree on the tile.

Definition at line 88 of file ai_tile.cpp.

References IsTileType(), and MP_TREES.

bool AITile::IsFarmTile | ( | TileIndex | tile | ) | `[static]`

Check if the tile is a farmland tile.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is farmland.

Definition at line 93 of file ai_tile.cpp.

References CLEAR_FIELDS, IsClearGround(), IsTileType(), and MP_CLEAR.

bool AITile::IsRockTile | ( | TileIndex | tile | ) | `[static]`

Check if the tile is a rock tile.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is rock tile.

Definition at line 98 of file ai_tile.cpp.

References CLEAR_ROCKS, IsClearGround(), IsTileType(), and MP_CLEAR.

bool AITile::IsRoughTile | ( | TileIndex | tile | ) | `[static]`

Check if the tile is a rough tile.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is rough tile.

Definition at line 103 of file ai_tile.cpp.

References CLEAR_ROUGH, IsClearGround(), IsTileType(), and MP_CLEAR.

bool AITile::IsSnowTile | ( | TileIndex | tile | ) | `[static]`

Check if the tile is a snow tile.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is snow tile.

Definition at line 108 of file ai_tile.cpp.

References CLEAR_SNOW, IsClearGround(), IsTileType(), and MP_CLEAR.

bool AITile::IsDesertTile | ( | TileIndex | tile | ) | `[static]`

Check if the tile is a desert tile.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if the tile is desert tile.

Definition at line 113 of file ai_tile.cpp.

References CLEAR_DESERT, IsClearGround(), IsTileType(), and MP_CLEAR.

AITile::Slope AITile::GetSlope | ( | TileIndex | tile | ) | `[static]`

Get the slope of a tile.

This is the slope of the bare tile. A possible foundation on the tile does not influence this slope.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  Bit mask encoding the slope. See Slope for a description of the returned values.

Definition at line 118 of file ai_tile.cpp.

References GetTileSlope(), IsValidTile(), and SLOPE_INVALID.

Referenced by AIRoad::CanBuildConnectedRoadPartsHere().

AITile::Slope AITile::GetComplementSlope | ( | Slope | slope | ) | `[static]`

Get the complement of the slope.

Parameters:

  | slope | The slope to get the complement of.

Precondition:
  slope != SLOPE_INVALID.

  !IsSteepSlope(slope).

  !IsHalftileSlope(slope).

Returns:
  The complement of a slope. This means that all corners that weren't raised, are raised, and visa versa.

Definition at line 125 of file ai_tile.cpp.

References ComplementSlope(), SLOPE_ELEVATED, and SLOPE_INVALID.

int32 AITile::GetHeight | ( | TileIndex | tile | ) | `[static]`

Get the height of the north corner of a tile.

The returned height is the height of the bare tile. A possible foundation on the tile does not influence this height.

Deprecated:
  This function is deprecated and might be removed in future versions of the API. Use GetMinHeight(), GetMaxHeight() or GetCornerHeight() instead.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  The height of the north corner of the tile, ranging from 0 to 15.

Definition at line 132 of file ai_tile.cpp.

References IsValidTile(), and TileHeight().

int32 AITile::GetMinHeight | ( | TileIndex | tile | ) | `[static]`

Get the minimal height on a tile.

The returned height is the height of the bare tile. A possible foundation on the tile does not influence this height.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  The height of the lowest corner of the tile, ranging from 0 to 15.

Definition at line 139 of file ai_tile.cpp.

References GetTileZ(), IsValidTile(), and TILE_HEIGHT.

int32 AITile::GetMaxHeight | ( | TileIndex | tile | ) | `[static]`

Get the maximal height on a tile.

The returned height is the height of the bare tile. A possible foundation on the tile does not influence this height.

Parameters:

  | tile | The tile to check on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  The height of the highest corner of the tile, ranging from 0 to 15.

Definition at line 146 of file ai_tile.cpp.

References GetTileMaxZ(), IsValidTile(), and TILE_HEIGHT.

int32 AITile::GetCornerHeight | ( | TileIndex | tile,
|  | Corner | corner |
| ) |  |  | `[static]`

Get the height of a certain corner of a tile.

The returned height is the height of the bare tile. A possible foundation on the tile does not influence this height.

Parameters:

  | tile | The tile to check on.
  | corner | The corner to query.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  The height of the lowest corner of the tile, ranging from 0 to 15.

Definition at line 153 of file ai_tile.cpp.

References GetSlopeZInCorner(), GetTileSlope(), IsValidCorner(), IsValidTile(), and TILE_HEIGHT.

AICompany::CompanyID AITile::GetOwner | ( | TileIndex | tile | ) | `[static]`

Get the owner of the tile.

Parameters:

  | tile | The tile to get the owner from.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  The CompanyID of the owner of the tile, or COMPANY_INVALID if there is no owner (grass/industry/water tiles, etc.).

Definition at line 162 of file ai_tile.cpp.

References AICompany::COMPANY_INVALID, GetTileOwner(), IsTileType(), IsValidTile(), MP_HOUSE, MP_INDUSTRY, and AICompany::ResolveCompanyID().

bool AITile::HasTransportType | ( | TileIndex | tile,
|  | TransportType | transport_type |
| ) |  |  | `[static]`

Checks whether the given tile contains parts suitable for the given TransportType.

Parameters:

  | tile | The tile to check.
  | transport_type | The TransportType to check against.

Precondition:
  AIMap::IsValidTile(tile).

Note:
  Returns false on tiles with roadworks and on road tiles with only a single piece of road as these tiles cannot be used to transport anything on. It furthermore returns true on some coast tile for TRANSPORT_WATER because ships can navigate over them.

Returns:
  True if and only if the tile has the given TransportType.

Definition at line 171 of file ai_tile.cpp.

References GetTileTrackStatus(), IsValidTile(), TRACKDIR_BIT_NONE, and TrackStatusToTrackdirBits().

Referenced by AIRail::GetRailType().

int32 AITile::GetCargoAcceptance | ( | TileIndex | tile,
|  | CargoID | cargo_type,
|  | int | width,
|  | int | height,
|  | int | radius |
| ) |  |  | `[static]`

Check how much cargo this tile accepts.

It creates a radius around the tile, and adds up all acceptance of this cargo.

Parameters:

  | tile | The tile to check on.
  | cargo_type | The cargo to check the acceptance of.
  | width | The width of the station.
  | height | The height of the station.
  | radius | The radius of the station.

Precondition:
  AIMap::IsValidTile(tile).

  width > 0.

  height > 0.

  radius >= 0.

Returns:
  Value below 8 means no acceptance; the more the better.

Definition at line 178 of file ai_tile.cpp.

References _settings_game, CA_UNMODIFIED, GetAcceptanceAroundTiles(), IsValidTile(), StationSettings::modified_catchment, and GameSettings::station.

int32 AITile::GetCargoProduction | ( | TileIndex | tile,
|  | CargoID | cargo_type,
|  | int | width,
|  | int | height,
|  | int | radius |
| ) |  |  | `[static]`

Checks how many tiles in the radius produces this cargo.

It creates a radius around the tile, and adds up all tiles that produce this cargo.

Parameters:

  | tile | The tile to check on.
  | cargo_type | The cargo to check the production of.
  | width | The width of the station.
  | height | The height of the station.
  | radius | The radius of the station.

Precondition:
  AIMap::IsValidTile(tile).

  width > 0.

  height > 0.

  radius >= 0.

Returns:
  The tiles that produce this cargo within radius of the tile.

Note:
  Town(houses) are not included in the value.

Definition at line 187 of file ai_tile.cpp.

References _settings_game, CA_UNMODIFIED, GetProductionAroundTiles(), IsValidTile(), StationSettings::modified_catchment, and GameSettings::station.

int32 AITile::GetDistanceManhattanToTile | ( | TileIndex | tile_from,
|  | TileIndex | tile_to |
| ) |  |  | `[static]`

Get the manhattan distance from the tile to the tile.

Parameters:

  | tile_from | The tile to get the distance to.
  | tile_to | The tile to get the distance to.

Returns:
  The distance between the two tiles.

Definition at line 196 of file ai_tile.cpp.

References AIMap::DistanceManhattan().

int32 AITile::GetDistanceSquareToTile | ( | TileIndex | tile_from,
|  | TileIndex | tile_to |
| ) |  |  | `[static]`

Get the square distance from the tile to the tile.

Parameters:

  | tile_from | The tile to get the distance to.
  | tile_to | The tile to get the distance to.

Returns:
  The distance between the two tiles.

Definition at line 201 of file ai_tile.cpp.

References AIMap::DistanceSquare().

bool AITile::RaiseTile | ( | TileIndex | tile,
|  | int32 | slope |
| ) |  |  | `[static]`

Raise the given corners of the tile.

The corners can be combined, for example: SLOPE_N | SLOPE_W (= SLOPE_NW) will raise the west and the north corner.

Note:
  The corners will be modified in the order west (first), south, east, north (last). Changing one corner might cause another corner to be changed too. So modifiing multiple corners may result in changing some corners by multiple steps.

Parameters:

  | tile | The tile to raise.
  | slope | Corners to raise (SLOPE_xxx).

Precondition:
  tile < AIMap::GetMapSize().

Exceptions:

  | AIError::ERR_AREA_NOT_CLEAR |
  | AIError::ERR_TOO_CLOSE_TO_EDGE |
  | AITile::ERR_TILE_TOO_HIGH |

Returns:
  0 means failed, 1 means success.

Definition at line 206 of file ai_tile.cpp.

References CMD_TERRAFORM_LAND, AIObject::DoCommand(), EnforcePrecondition, and MapSize().

bool AITile::LowerTile | ( | TileIndex | tile,
|  | int32 | slope |
| ) |  |  | `[static]`

Lower the given corners of the tile.

The corners can be combined, for example: SLOPE_N | SLOPE_W (= SLOPE_NW) will lower the west and the north corner.

Note:
  The corners will be modified in the order west (first), south, east, north (last). Changing one corner might cause another corner to be changed too. So modifiing multiple corners may result in changing some corners by multiple steps.

Parameters:

  | tile | The tile to lower.
  | slope | Corners to lower (SLOPE_xxx).

Precondition:
  tile < AIMap::GetMapSize().

Exceptions:

  | AIError::ERR_AREA_NOT_CLEAR |
  | AIError::ERR_TOO_CLOSE_TO_EDGE |
  | AITile::ERR_TILE_TOO_LOW |

Returns:
  0 means failed, 1 means success.

Definition at line 213 of file ai_tile.cpp.

References CMD_TERRAFORM_LAND, AIObject::DoCommand(), EnforcePrecondition, and MapSize().

bool AITile::LevelTiles | ( | TileIndex | start_tile,
|  | TileIndex | end_tile |
| ) |  |  | `[static]`

Level all tiles in the rectangle between start_tile and end_tile so they are at the same height.

All tiles will be raised or lowered until they are at height AITile::GetHeight(start_tile).

Parameters:

  | start_tile | One corner of the rectangle to level.
  | end_tile | The opposite corner of the rectangle.

Precondition:
  start_tile < AIMap::GetMapSize().

  end_tile < AIMap::GetMapSize().

Exceptions:

  | AIError::ERR_AREA_NOT_CLEAR |
  | AIError::ERR_TOO_CLOSE_TO_EDGE |

Returns:
  True if and only if the area was completely leveled.

Note:
  Even if leveling some part fails, some other part may have been succesfully leveled already.

  This function may return true in AITestMode, although it fails in AIExecMode.

Definition at line 220 of file ai_tile.cpp.

References CMD_LEVEL_LAND, AIObject::DoCommand(), EnforcePrecondition, and MapSize().

bool AITile::DemolishTile | ( | TileIndex | tile | ) | `[static]`

Destroy everything on the given tile.

Parameters:

  | tile | The tile to demolish.

Precondition:
  AIMap::IsValidTile(tile).

Exceptions:

  | AIError::ERR_AREA_NOT_CLEAR |

Returns:
  True if and only if the tile was demolished.

Definition at line 228 of file ai_tile.cpp.

References CMD_LANDSCAPE_CLEAR, AIObject::DoCommand(), EnforcePrecondition, and IsValidTile().

bool AITile::PlantTree | ( | TileIndex | tile | ) | `[static]`

Create a random tree on a tile.

Parameters:

  | tile | The tile to build a tree on.

Precondition:
  AIMap::IsValidTile(tile).

Returns:
  True if and only if a tree was added on the tile.

Definition at line 235 of file ai_tile.cpp.

References CMD_PLANT_TREE, AIObject::DoCommand(), EnforcePrecondition, and IsValidTile().

bool AITile::PlantTreeRectangle | ( | TileIndex | tile,
|  | uint | width,
|  | uint | height |
| ) |  |  | `[static]`

Create a random tree on a rectangle of tiles.

Parameters:

  | tile | The top left tile of the rectangle.
  | width | The width of the rectangle.
  | height | The height of the rectangle.

Precondition:
  AIMap::IsValidTile(tile).

  width >= 1 && width <= 20.

  height >= 1 && height <= 20.

Returns:
  True if and only if a tree was added on any of the tiles in the rectangle.

Definition at line 242 of file ai_tile.cpp.

References CMD_PLANT_TREE, AIObject::DoCommand(), EnforcePrecondition, IsValidTile(), and TileDiffXY().

bool AITile::IsWithinTownInfluence | ( | TileIndex | tile,
|  | TownID | town_id |
| ) |  |  | `[static]`

Find out if this tile is within the rating influence of a town.

Stations on this tile influence the rating of the town.

Parameters:

  | tile | The tile to check.
  | town_id | The town to check.

Returns:
  True if the tile is within the rating influence of the town.

Definition at line 252 of file ai_tile.cpp.

References AITown::IsWithinTownInfluence().

TownID AITile::GetClosestTown | ( | TileIndex | tile | ) | `[static]`

Find the town that is closest to a tile.

Stations you build at this tile will belong to this town.

Parameters:

  | tile | The tile to check.

Returns:
  The TownID of the town closest to the tile.

Definition at line 257 of file ai_tile.cpp.

References IsValidTile().

The documentation for this class was generated from the following files:

- src/ai/api/ai_tile.hpp
- src/ai/api/ai_tile.cpp