// Byond direction defines, because I want to put them somewhere.
// #define NORTH 1
// #define SOUTH 2
// #define EAST 4
// #define WEST 8

/// North direction as a string "[1]"
#define TEXT_NORTH "[NORTH]"
/// South direction as a string "[2]"
#define TEXT_SOUTH "[SOUTH]"
/// East direction as a string "[4]"
#define TEXT_EAST "[EAST]"
/// West direction as a string "[8]"
#define TEXT_WEST "[WEST]"

//dir macros
///Returns true if the dir is diagonal, false otherwise
#define ISDIAGONALDIR(d) (d&(d-1))
///True if the dir is north or south, false therwise
#define NSCOMPONENT(d)   (d&(NORTH|SOUTH))
///True if the dir is east/west, false otherwise
#define EWCOMPONENT(d)   (d&(EAST|WEST))
///Flips the dir for north/south directions
#define NSDIRFLIP(d)     (d^(NORTH|SOUTH))
///Flips the dir for east/west directions
#define EWDIRFLIP(d)     (d^(EAST|WEST))

/// Inverse direction, taking into account UP|DOWN if necessary.
#define REVERSE_DIR(dir) ( ((dir & 85) << 1) | ((dir & 170) >> 1) )