Ludum Dare is an online community best known for “Ludum Dare”, the Accelerated Game Development Event of the same name (also called a “Game Jam”). During a Ludum Dare, developers from around the world spend a weekend creating games based on a theme suggested by the community. Ludum Dare events take place every April, August and December.
TilePix only supports orthogonal maps (currently - hopefully we'll be able to support other types in the future). A sensible error should be returned on Reading a map which doesn't have orientation="orthogonal".
Need to set up a constant for each type:
Then, using a switch statement, check against each, returning an error if not
