public List <(AbstractField, int, Direction)> GetNeighbours(AbstractField field, AbstractField[][] board, int height, int width)
{
int[] center = field.GetPosition();
List <(AbstractField, int, Direction)> neighbours = new List <(AbstractField, int, Direction)>();
var neighbourCoordinates = DirectionExtensions.GetCoordinatesAroundCenter(center);
for (int i = 0; i < neighbourCoordinates.Length; i++)
{
var(dir, y, x) = neighbourCoordinates[i];
if (y >= 0 && y < height && x >= 0 && x < width)
{
neighbours.Add((board[y][x], int.MaxValue, dir));
}
}
return(neighbours);
}
public void TestGetCoordinatesAroundCenterMiddleField()
{
// Arrange
(int y, int x)center = (5, 4);
// Act
var result = DirectionExtensions.GetCoordinatesAroundCenter(center);
// Assert
Assert.Equal(9, result.Length);
Assert.Contains((Direction.SW, center.y - 1, center.x - 1), result);
Assert.Contains((Direction.S, center.y - 1, center.x), result);
Assert.Contains((Direction.SE, center.y - 1, center.x + 1), result);
Assert.Contains((Direction.W, center.y, center.x - 1), result);
Assert.Contains((Direction.FromCurrent, center.y, center.x), result);
Assert.Contains((Direction.E, center.y, center.x + 1), result);
Assert.Contains((Direction.NW, center.y + 1, center.x - 1), result);
Assert.Contains((Direction.N, center.y + 1, center.x), result);
Assert.Contains((Direction.NE, center.y + 1, center.x + 1), result);
}