private IEnumerable <BoardPoint> EnumerateNeighbors(BoardPoint point)
{
yield return(point.ShiftLeft());
yield return(point.ShiftRight());
yield return(point.ShiftTop());
yield return(point.ShiftBottom());
}
public bool IsNearToElement(BoardPoint point, BoardElement element)
{
if (point.IsOutOfBoard(Size))
return false;
return HasElementAt(point.ShiftBottom(), element)
|| HasElementAt(point.ShiftTop(), element)
|| HasElementAt(point.ShiftLeft(), element)
|| HasElementAt(point.ShiftRight(), element);
}
public int GetCountElementsNearToPoint(BoardPoint point, BoardElement element)
{
if (point.IsOutOfBoard(Size))
return 0;
//GetHashCode() in classic MS.NET for bool returns 1 for true and 0 for false;
return HasElementAt(point.ShiftLeft(), element).GetHashCode() +
HasElementAt(point.ShiftRight(), element).GetHashCode() +
HasElementAt(point.ShiftTop(), element).GetHashCode() +
HasElementAt(point.ShiftBottom(), element).GetHashCode();
}
