#include <stdio.h>

FILE *tiles_c;
FILE *tiles_h;

void convert(char *file_name, char *var_name) {
    int i, n;
    unsigned char buffer[16];

    FILE *infile=fopen(file_name, "r");

    fprintf(tiles_c, "unsigned char %s[] = {\n", var_name);
    while ((n = fread(buffer, 1, 16, infile)))
    {
        for (i = 0; i < n; i++) {
          fprintf(tiles_c, "0x%2.2x,", buffer[i]);
        }
    }
  fprintf(tiles_c, "\n};\n");
  fprintf(tiles_c, "unsigned int %s_length = %d;\n\n", var_name, ftell(infile));
  fprintf(tiles_h, "extern unsigned char %s[];\n", var_name);
  fprintf(tiles_h, "extern unsigned int %s_length;\n\n", var_name);
}

int main(int argc, char **argv) {
  tiles_c = fopen("tiles/tiles.c", "w");
  tiles_h = fopen("tiles/tiles.h", "w");
  fprintf(tiles_h, "/** WARNING - THIS FILE IS AUTOGENERATED BY pack_tiles, EDITS TO THIS FILE MAY BE OVERWRITTEN **/\n");
  fprintf(tiles_c, "/** WARNING - THIS FILE IS AUTOGENERATED BY pack_tiles, EDITS TO THIS FILE MAY BE OVERWRITTEN **/\n");
  fprintf(tiles_h, "#ifndef TILES_H\n#define TILES_H\n");
  fprintf(tiles_h, "#define TILE_WIDTH 16\n#define TILE_HEIGHT 32\n");

  convert("tiles/font.png", "font_images");
  convert("tiles/players.png", "player_images");
  convert("tiles/npcs.png", "npc_images");
  convert("tiles/walls.png", "wall_images");
  convert("tiles/floors.png", "floor_images");
  convert("tiles/doors.png", "door_images");
  convert("tiles/shadows.png", "shadow_images");

  fprintf(tiles_h, "#endif\n");
  fclose(tiles_c);
  fclose(tiles_h);

  return 0;
}