public override int PopBaloons(int row, int col, Playfield playfield)
{
if (playfield == null)
{
throw new ArgumentNullException("playfield", "Playfield can't be null.");
}
bool isRowValid = row >= 0 && row < playfield.Height;
bool isColValid = col >= 0 && col < playfield.Width;
if (isRowValid && isColValid)
{
string selectedCellValue = playfield.Field[row, col];
if (selectedCellValue == ".")
{
return 0;
}
else
{
return this.PopBaloons(row, col, playfield, selectedCellValue);
}
}
return 0;
}
private int PopBaloons(int row, int col, Playfield playfield, string selectedCellValue = null)
{
int poppedBaloons = 0;
bool isRowValid = row >= 0 && row < playfield.Height;
bool isColValid = col >= 0 && col < playfield.Width;
if (isRowValid && isColValid)
{
if (playfield.Field[row, col] == selectedCellValue)
{
// Pop current cell
playfield.Field[row, col] = ".";
poppedBaloons += 1;
// Up
poppedBaloons += this.PopBaloons(row - 1, col, playfield, selectedCellValue);
// Down
poppedBaloons += this.PopBaloons(row + 1, col, playfield, selectedCellValue);
// Left
poppedBaloons += this.PopBaloons(row, col + 1, playfield, selectedCellValue);
// Right
poppedBaloons += this.PopBaloons(row, col - 1, playfield, selectedCellValue);
}
}
return poppedBaloons;
}
public void InitialWidthShouldBeFiveForNewInstance()
{
Playfield playfield = new Playfield();
int expected = 5;
int actual = playfield.Width;
Assert.AreEqual(expected, actual, "When new instance is created without parameters, the width of the playfield should have value of 5.");
}
public void InitialHeightShouldBeTenForNewInstance()
{
Playfield playfield = new Playfield();
int expected = 10;
int actual = playfield.Height;
Assert.AreEqual(expected, actual, "When new instance is created without parameters, the height of the playfield should have value of 10.");
}
/// <summary>
/// This method implements the factory design pattern for instantiating a playfield
/// with the user desired dimensions.
/// </summary>
/// <returns></returns>
private Playfield InitializePlayfield()
{
int playfieldSize = ConsoleIOFacade.ReadPlayfieldSize();
Playfield playfield = null;
bool isPlayfieldSizeIncorrect = true;
while (isPlayfieldSizeIncorrect)
{
PlayfieldFactory playfiledFactory = null;
switch (playfieldSize)
{
case 1:
playfiledFactory = new SmallPlayfieldFactory();
playfield = playfiledFactory.CreatePlayfield();
isPlayfieldSizeIncorrect = false;
break;
case 2:
playfiledFactory = new MediumPlayfieldFactory();
playfield = playfiledFactory.CreatePlayfield();
isPlayfieldSizeIncorrect = false;
break;
case 3:
playfiledFactory = new LargePlayfieldFactory();
playfield = playfiledFactory.CreatePlayfield();
isPlayfieldSizeIncorrect = false;
break;
default:
// Extract to consoleIO
Console.WriteLine("You have entered incorrect field size");
break;
}
}
return playfield;
}
/// <summary>
/// This method requires a playfield and a pop strategy and initialize all the game properties
/// to their initial state.
/// </summary>
/// <param name="gamePlayfield"></param>
/// <param name="gamePopStrategy"></param>
private void InitializeGame(Playfield gamePlayfield, PopStrategy gamePopStrategy)
{
this.playfield = gamePlayfield;
this.popStrategy = gamePopStrategy;
this.balloonsLeft = gamePlayfield.Width * gamePlayfield.Height;
this.userMoves = 0;
}
public void ZeroWidthShouldThrowException()
{
Playfield playfield = new Playfield(10, 0);
}
public void ZeroHeightShouldThrowException()
{
Playfield playfield = new Playfield(0);
}
public void NegativeWidthShouldThrowException()
{
Playfield playfield = new Playfield(10, -20);
}
public void NegativeHeightShouldThrowException()
{
Playfield playfield = new Playfield(-20);
}