<!-- 
  List all colision type, used to sort physics entities.
  This info is used when 2 entities collides to affect special behaviour based on their type
  (example: ennemy colliding with a player, or bullets).
  Value can be any positive integer.
 -->
 <collisionlayers>
  <layer name="background" value="128"/>
  <layer name="objects" value="1"/>
  <layer name="sheepEater" value="2"/>
  <layer name="sheep" value="7"/>
  <layer name="platform" value="5"/>
</collisionlayers>