map_type.h File Reference

Types related to maps. More...

Go to the source code of this file.

Data Structures

struct  Tile
 Data that is stored per tile. More...
struct  TileExtended
 Data that is stored per tile. More...
struct  TileIndexDiffC
 A pair-construct of a TileIndexDiff. More...

Defines

#define STRAIGHT_TRACK_LENGTH   7071/10000
 Approximation of the length of a straight track, relative to a diagonal track (ie the size of a tile side).

Typedefs

typedef int32 TileIndexDiff
 An offset value between to tiles.


Detailed Description

Types related to maps.

Definition in file map_type.h.


Define Documentation

#define STRAIGHT_TRACK_LENGTH   7071/10000

Approximation of the length of a straight track, relative to a diagonal track (ie the size of a tile side).

defined instead of const so it can stay integer. (no runtime float operations) Is this needed? Watch out! There are _no_ brackets around here, to prevent intermediate rounding! Be careful when using this! This value should be sqrt(2)/2 ~ 0.7071

Definition at line 63 of file map_type.h.

Referenced by NPFDistanceTrack().


Typedef Documentation

typedef int32 TileIndexDiff

An offset value between to tiles.

This value is used fro the difference between to tiles. It can be added to a tileindex to get the resulting tileindex of the start tile applied with this saved difference.

See also:
TileDiffXY(int, int)

Definition at line 40 of file map_type.h.


Generated on Wed Jul 15 20:36:07 2009 for OpenTTD by  doxygen 1.5.6