void DrawGrass()
{
grassTiles = new List <GameObject>();
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
grassTiles.Add(tiles.GetRandomGrassTile(x * 3, y * 3));
grassTiles[grassTiles.Count - 1].transform.parent = transform;
}
}
}