Source:NetHack 3.4.3/include/tile.h

Below is the full text to win/share/tile.h from NetHack 3.4.3. To link to a particular line, write [[tile.h#line123]], for example.

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typedef unsigned char pixval;

typedef struct {
pixval r, g, b;
} pixel;

#define MAXCOLORMAPSIZE		256

#define CM_RED          0
#define CM_GREEN	1
#define CM_BLUE		2

/* shared between reader and writer */
extern pixval ColorMap[3][MAXCOLORMAPSIZE];
extern int colorsinmap;
/* writer's accumulated colormap */
extern pixval MainColorMap[3][MAXCOLORMAPSIZE];
extern int colorsinmainmap;

#include "dlb.h"        /* for MODEs */

/* size of tiles */
#ifndef TILE_X
#define TILE_X 16
#endif
#ifndef TILE_Y
#define TILE_Y 16
#endif

#define Fprintf (void) fprintf


extern boolean FDECL(fopen_text_file, (const char *, const char *));
extern boolean FDECL(read_text_tile, (pixel (*)[TILE_X]));
extern boolean FDECL(write_text_tile, (pixel (*)[TILE_X]));
extern int NDECL(fclose_text_file);

extern void NDECL(init_colormap);
extern void NDECL(merge_colormap);

#if defined(MICRO) || defined(WIN32)
#undef exit
# if !defined(MSDOS) && !defined(WIN32)
extern void FDECL(exit, (int));
# endif
#endif