void Generate()
{
roomBuilder.ClearAllTiles();
// Run the algorithm.
int[,] map = Walk();
map = Merge4(map);
map = Merge2(map);
// Place a rectangle to represent each room.
for (int y = 0; y < map.GetLength(1); y++)
{
for (int x = 0; x < map.GetLength(0); x++)
{
roomBuilder.BuildRoom(x, y, map);
}
}
}