public void TestIsValidPosition()
{
bool result;
// (0, 0) is a valid position
result = TilePosition.IsValidPosition(0, 0);
Assert.AreEqual(result, true);
// (2, 2) is a valid position
result = TilePosition.IsValidPosition(0, 0);
Assert.AreEqual(result, true);
// y has to be positive
result = TilePosition.IsValidPosition(0, -4);
Assert.AreEqual(result, false);
// x and y must have the same parity
result = TilePosition.IsValidPosition(0, 1);
Assert.AreEqual(result, false);
}
public List <TilePosition> GetAdjacentPositions()
{
List <TilePosition> adjacent_pos = new List <TilePosition> ();
int x, y;
func AddIfValid = (List <TilePosition> p_list, int x_, int y_) =>
{
if (TilePosition.IsValidPosition(x_, y_))
{
adjacent_pos.Add(new TilePosition(x_, y_));
}
};
// Above
x = this.x;
y = this.y - 2;
AddIfValid(adjacent_pos, x, y);
// Below
x = this.x;
y = this.y + 2;
AddIfValid(adjacent_pos, x, y);
// Top left
x = this.x - 1;
y = this.y - 1;
AddIfValid(adjacent_pos, x, y);
// Bottom left
x = this.x - 1;
y = this.y + 1;
AddIfValid(adjacent_pos, x, y);
// Top right
x = this.x + 1;
y = this.y - 1;
AddIfValid(adjacent_pos, x, y);
// Bottom right
x = this.x + 1;
y = this.y + 1;
AddIfValid(adjacent_pos, x, y);
return(adjacent_pos);
}
