public int GetAlliedUnits(Enums.Player player)
{
var rUnits = Right?.GetAlliedUnits(player).ToList();
var lUnits = Left?.GetAlliedUnits(player).ToList();
var uUnits = Up?.GetAlliedUnits(player).ToList();
var dUnits = Down?.GetAlliedUnits(player).ToList();
var totalUnits = rUnits.UnionNull(lUnits).UnionNull(uUnits).UnionNull(dUnits).ToList();
int count = totalUnits.Count;
return(count);
}