/* NetHack 3.7    tileset.h    $NHDT-Date: 1596498564 2020/08/03 23:49:24 $ $NHDT-Branch: NetHack-3.7 $:$NHDT-Revision: 1.2 $ */
/* Copyright (c) Ray Chason, 2016. */
/* NetHack may be freely redistributed.  See license for details. */

#ifndef TILESET_H
#define TILESET_H

struct Pixel {
    unsigned char r, g, b, a;
};

struct TileImage {
    /* Image data */
    unsigned width, height;
    struct Pixel *pixels; /* for direct color */
    unsigned char *indexes; /* for paletted images */
};

boolean FDECL(read_tiles, (const char *filename, BOOLEAN_P true_color));
const struct Pixel *NDECL(get_palette);
void FDECL(set_tile_type, (BOOLEAN_P true_color));
void NDECL(free_tiles);
const struct TileImage *FDECL(get_tile, (unsigned tile_index));

/* For resizing tiles */
struct TileImage *FDECL(stretch_tile, (const struct TileImage *,
                                       unsigned, unsigned));
void FDECL(free_tile, (struct TileImage *));

/* Used internally by the tile set code */
struct TileSetImage {
    /* Image data */
    unsigned width, height;
    struct Pixel *pixels; /* for direct color */
    unsigned char *indexes; /* for paletted images */
    struct Pixel palette[256];
    
    /* Image description from the file */
    char *image_desc;

    /* Tile dimensions */
    unsigned tile_width, tile_height;
};

boolean FDECL(read_bmp_tiles, (const char *filename,
                               struct TileSetImage *image));
boolean FDECL(read_gif_tiles, (const char *filename,
                               struct TileSetImage *image));
boolean FDECL(read_png_tiles, (const char *filename,
                               struct TileSetImage *image));

#endif