AIMap Class Reference

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


Static Public Member Functions

static bool IsValidTile (TileIndex tile)
 Checks whether the given tile is valid.
static TileIndex GetMapSize ()
 Gets the number of tiles in the map.
static uint32 GetMapSizeX ()
 Gets the amount of tiles along the SW and NE border.
static uint32 GetMapSizeY ()
 Gets the amount of tiles along the SE and NW border.
static int32 GetTileX (TileIndex tile)
 Gets the place along the SW/NE border (X-value).
static int32 GetTileY (TileIndex tile)
 Gets the place along the SE/NW border (Y-value).
static TileIndex GetTileIndex (uint32 x, uint32 y)
 Gets the TileIndex given a x,y-coordinate.
static int32 DistanceManhattan (TileIndex tile_from, TileIndex tile_to)
 Calculates the Manhattan distance; the difference of the X and Y added together.
static int32 DistanceMax (TileIndex tile_from, TileIndex tile_to)
 Calculates the distance between two tiles via 1D calculation.
static int32 DistanceSquare (TileIndex tile_from, TileIndex tile_to)
 The squared distance between the two tiles.
static int32 DistanceFromEdge (TileIndex tile)
 Calculates the shortest distance to the edge.

Static Public Attributes

static const int TILE_INVALID = (int)INVALID_TILE
 Invalid TileIndex.


Detailed Description

Class that handles all map related functions.

Member Function Documentation

static bool AIMap::IsValidTile ( TileIndex  tile  )  [static]

Checks whether the given tile is valid.

Parameters:
tile The tile to check.
Returns:
True is the tile it within the boundaries of the map.

static TileIndex AIMap::GetMapSize (  )  [static]

Gets the number of tiles in the map.

Returns:
The size of the map in tiles.
Postcondition:
Return value is always positive.

static uint32 AIMap::GetMapSizeX (  )  [static]

Gets the amount of tiles along the SW and NE border.

Returns:
The length along the SW and NE borders.
Postcondition:
Return value is always positive.

static uint32 AIMap::GetMapSizeY (  )  [static]

Gets the amount of tiles along the SE and NW border.

Returns:
The length along the SE and NW borders.
Postcondition:
Return value is always positive.

static int32 AIMap::GetTileX ( TileIndex  tile  )  [static]

Gets the place along the SW/NE border (X-value).

Parameters:
tile The tile to get the X-value of.
Precondition:
IsValidTile(tile).
Returns:
The X-value.
Postcondition:
Return value is always lower than GetMapSizeX().

static int32 AIMap::GetTileY ( TileIndex  tile  )  [static]

Gets the place along the SE/NW border (Y-value).

Parameters:
tile The tile to get the Y-value of.
Precondition:
IsValidTile(tile).
Returns:
The Y-value.
Postcondition:
Return value is always lower than GetMapSizeY().

static TileIndex AIMap::GetTileIndex ( uint32  x,
uint32  y 
) [static]

Gets the TileIndex given a x,y-coordinate.

Parameters:
x The X coordinate.
y The Y coordinate.
Precondition:
x < GetMapSizeX().

y < GetMapSizeY().

Returns:
The TileIndex for the given (x,y) coordinate.

static int32 AIMap::DistanceManhattan ( TileIndex  tile_from,
TileIndex  tile_to 
) [static]

Calculates the Manhattan distance; the difference of the X and Y added together.

Parameters:
tile_from The start tile.
tile_to The destination tile.
Precondition:
IsValidTile(tile_from).

IsValidTile(tile_to).

Returns:
The Manhattan distance between the tiles.

static int32 AIMap::DistanceMax ( TileIndex  tile_from,
TileIndex  tile_to 
) [static]

Calculates the distance between two tiles via 1D calculation.

This means the distance between X or the distance between Y, depending on which one is bigger.

Parameters:
tile_from The start tile.
tile_to The destination tile.
Precondition:
IsValidTile(tile_from).

IsValidTile(tile_to).

Returns:
The maximum distance between the tiles.

static int32 AIMap::DistanceSquare ( TileIndex  tile_from,
TileIndex  tile_to 
) [static]

The squared distance between the two tiles.

This is the distance is the length of the shortest straight line between both points.

Parameters:
tile_from The start tile.
tile_to The destination tile.
Precondition:
IsValidTile(tile_from).

IsValidTile(tile_to).

Returns:
The squared distance between the tiles.

static int32 AIMap::DistanceFromEdge ( TileIndex  tile  )  [static]

Calculates the shortest distance to the edge.

Parameters:
tile From where the distance has to be calculated.
Precondition:
IsValidTile(tile).
Returns:
The distances to the closest edge.


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