def find_tiles_by_distance(distance)
    # Make distance an odd number, so there's a center row and column
    distance += distance % 2
    radius = distance / 2

    our_tile = game.player.entity.tile

    map_tiles = tiles.find(
      :all,
      :conditions => [
        'x BETWEEN ? AND ? AND y BETWEEN ? AND ?',
        our_tile.x - radius, our_tile.x + radius,
        our_tile.y - radius, our_tile.y + radius],
      :order => 'x ASC, y ASC')
    map_tiles.map { |t| {:x => t.x, :y => t.y} }
  end