(svn r13729) -Fix: assumption that non-north tiles of a house do not have the 1x1 building bit set was flawed with some NewGRFs. This caused the amount of houses to differ, which causes the town radii to differ, which causes desyncs when towns are expanded.
/* $Id$ */
/** @file map_type.h Types related to maps. */
#ifndef MAP_TYPE_H
#define MAP_TYPE_H
/**
* Data that is stored per tile. Also used TileExtended for this.
* Look at docs/landscape.html for the exact meaning of the members.
*/
struct Tile {
byte type_height; ///< The type (bits 4..7) and height of the northern corner
byte m1; ///< Primarily used for ownership information
uint16 m2; ///< Primarily used for indices to towns, industries and stations
byte m3; ///< General purpose
byte m4; ///< General purpose
byte m5; ///< General purpose
byte m6; ///< Primarily used for bridges and rainforest/desert
};
/**
* Data that is stored per tile. Also used Tile for this.
* Look at docs/landscape.html for the exact meaning of the members.
*/
struct TileExtended {
byte m7; ///< Primarily used for newgrf support
};
/**
* 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 TileDiffXY(int, int)
*/
typedef int32 TileIndexDiff;
/**
* A pair-construct of a TileIndexDiff.
*
* This can be used to save the difference between to
* tiles as a pair of x and y value.
*/
struct TileIndexDiffC {
int16 x; ///< The x value of the coordinate
int16 y; ///< The y value of the coordinate
};
/**
* 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
*/
#define STRAIGHT_TRACK_LENGTH 7071/10000
#endif /* MAP_TYPE_H */