tiler.ruby

start_lvl = 18
end_lvl = 10


start_lvl.downto(end_lvl).each do |current_lvl|

  resize_cmd = "convert lvl_#{current_lvl+1}.gif -resize 50% lvl_#{current_lvl}.gif"
  puts resize_cmd
  output = `#{resize_cmd}`

  tile_cmd = "convert lvl_#{current_lvl}.gif -crop 256x256 -set filename:tile \"%[fx:page.x/256+1]_%[fx:page.y/256+1]\" +repage +adjoin \"map_%[filename:tile].png\""
  puts tile_cmd
  output = `#{tile_cmd}`

  create_dir_cmd = "mkdir lvl_#{current_lvl}"
  puts create_dir_cmd
  output = `#{create_dir_cmd}`

  mv_files_cmd = "mv map*.png lvl_#{current_lvl}/"
  puts mv_files_cmd
  output = `#{mv_files_cmd}`

end