void Start()
{
// get board data
TileData.hash = new Hashtable();
TileData.tiles = new TopTile[tilesX, tilesY];
TileData.x = tilesX;
TileData.y = tilesY;
Board board = new Board(tilesX, tilesY);
board.generate(tileSize, maxHeight, smoothness);
// index islands
IslandGenerator islandGenerator = new IslandGenerator(tilesX, tilesY);
islandGenerator.generate();
}