/// <summary>
/// Retrieve set of tiles in range of the specified tile using radius as a parameter.
/// </summary>
/// <param name="tile">Target tile.</param>
/// <param name="radius">Radius of the range.</param>
/// <returns></returns>
public static HashSet <Tile> GetRange(Tile tile, int radius)
{
HashSet <Tile> setA = new HashSet <Tile>();
HashSet <Tile> setB = new HashSet <Tile>();
Hex hex = WorldManager.Hex;
foreach (Tile t in WorldManager.World.Tiles)
{
if (Hex.AxisDistance(hex, tile, t, Hex.Axis.X) >= -radius && Hex.AxisDistance(hex, tile, t, Hex.Axis.X) <= radius)
{
setA.Add(t);
}
}
foreach (Tile t in setA)
{
if (Hex.AxisDistance(hex, tile, t, Hex.Axis.Y) >= -radius && Hex.AxisDistance(hex, tile, t, Hex.Axis.Y) <= radius)
{
setB.Add(t);
}
}
setA.Clear();
foreach (Tile t in setB)
{
if (Hex.AxisDistance(hex, tile, t, Hex.Axis.Z) >= -radius && Hex.AxisDistance(hex, tile, t, Hex.Axis.Z) <= radius)
{
setA.Add(t);
}
}
setA.Remove(tile);
return(setA);
}