/// <summary>
/// Takes in a Tile t and a range and returns a list of all the tiles within that range
/// </summary>
/// <param name="t">tile we are starting from</param>
/// <param name="range">range we are covering</param>
/// <param name="tileValid">delegate that holds special check on tile condition </param>
/// <returns>returns a set of all the tiles within a given range with t as the center</returns>
private HashSet <Tile> getTilesInRange(Tile t, int range, tileValid tileValid)
{
HashSet <Tile> tiles = new HashSet <Tile>();
getTilesInRange(t, t, tiles, range, tileValid);
return(tiles);
}
private void getTilesInRange(Tile source, Tile t, HashSet <Tile> tiles, int range, tileValid tileValid)
{
tiles.Add(t);
List <Tile> neighbors = getTileNeighbors(t);
foreach (Tile n in neighbors)
{
if (range > 1 && n.active)
{
if (tileValid != null && tileValid.Invoke(source, t))
{
getTilesInRange(source, n, tiles, range - 1, tileValid);
}
}
}
}
