public BoardPositions Add(BoardPositions positions)
{
var sum = new List <BoardPosition>(Positions);
sum.AddRange(positions.Positions);
return(new BoardPositions(sum.Distinct().ToList()));
}
public Board(int height, int width)
{
Height = height;
Width = width;
var positions = new List <BoardPosition>();
for (int y = 0; y < Height; y++)
{
for (int x = 0; x < Width; x++)
{
positions.Add(new BoardPosition(x, y));
}
}
Positions = new BoardPositions(positions);
}
public BoardPositions Substract(BoardPositions positions)
{
return(new BoardPositions(Positions.Except(positions.Positions).ToList()));
}