Tilemaps

Tilemaps are XML files containing all information required to create maps. They will contain some integers, which are in fact indexes in a tileset. Note that the tileset is not referenced in a map file: one could want to have the same map but with a different scenery.
An XML map should follow the following format (the content of LAYER can contain spaces or line-breaks if you want to improve readability):

<?xml version="1.0" encoding="UTF-8"?>
<MAP width="13" height="13" nbLayers="2">
  <LAYER>
    1-1-1-2-2-2-2-2-2-2-1-1-1-
    1-1-2-1-2-1-2-1-2-1-2-1-1-
    1-2-2-2-2-2-2-2-2-2-2-2-1-
    2-1-2-1-2-1-2-1-2-1-2-1-2-
    2-2-2-2-2-2-2-2-2-2-2-2-2-
    2-1-2-1-2-1-2-1-2-1-2-1-2-
    2-2-2-2-2-2-2-2-2-2-2-2-2-
    2-1-2-1-2-1-2-1-2-1-2-1-2-
    2-2-2-2-2-2-2-2-2-2-2-2-2-
    2-1-2-1-2-1-2-1-2-1-2-1-2-
    1-2-2-2-2-2-2-2-2-2-2-2-1-
    1-1-2-1-2-1-2-1-2-1-2-1-1-
    1-1-1-2-2-2-2-2-2-2-1-1-1-
  </LAYER>
  <LAYER>
    0-0-0-0-0-0-0-0-0-0-0-0-0-
    0-3-0-3-0-3-0-3-0-3-0-3-0-
    0-0-0-0-0-0-0-0-0-0-0-0-0-
    0-3-0-3-0-3-0-3-0-3-0-3-0-
    0-0-0-0-0-0-0-0-0-0-0-0-0-
    0-3-0-3-0-3-0-3-0-3-0-3-0-
    0-0-0-0-0-0-0-0-0-0-0-0-0-
    0-3-0-3-0-3-0-3-0-3-0-3-0-
    0-0-0-0-0-0-0-0-0-0-0-0-0-
    0-3-0-3-0-3-0-3-0-3-0-3-0-
    0-0-0-0-0-0-0-0-0-0-0-0-0-
    0-3-0-3-0-3-0-3-0-3-0-3-0-
    0-0-0-0-0-0-0-0-0-0-0-0-0-
  </LAYER>
</MAP>

The 0 has a special value: it means "nothing". Other indexes refere to a tile in a tileset. Tilesets start counting from the upper-left tile, going horizontally then vertically, until the bottom-right tile.