private string verifyDoors()
{
string errors = "";
if (currentState == State.EDITING_WORLD)
{
//Look at every door in every room.
foreach (Room room in world.Rooms)
{
errors += verifyDoorsInRoom(room);
}
}
else if (currentState == State.EDITING_ROOM)
{
errors += verifyDoorsInRoom(currentlySelectedRoom);
}
return errors;
}