public void InitialPieceLocationSetToBottomOfBoardFacingNorth()
{
PieceClass Result = new PieceClass();
Assert.That(Result.getX(), Is.EqualTo(0));
Assert.That(Result.getY(), Is.EqualTo(0));
Assert.That(Result.getFDS(), Is.EqualTo("N"));
}
public void ShouldDisplayInitialPieceLocation()
{
PieceClass TestPiece = new PieceClass();
var Result = TestPiece.Output();
Assert.That(Result, Contains.Substring("0 0 N"));
}
public int EvalClassBench()
{
PieceClass[] boardClass = new PieceClass[64];
for (int i = 0; i < boardClass.Length; i++)
{
boardClass[i] = new PieceClass(i, 'p');
}
return(SearchClass(boardClass, targetDepth));
}
/// <summary>
/// Invoked when the chess engine has responded with a move to apply to the
/// local board
/// </summary>
private void OnEngineBestMoveResponse()
{
thinkingIndex = 0; // reset index counter for simple progress text
// Get the best move from the engine
string bestMove = engine.BestMove;
if ((String.Compare(bestMove, "(none)") == 0) || // Stockfish (and converted ones)
(String.Compare(bestMove, "a1a1") == 0) || // Rybka
(board.HalfMoveCount >= HalfMovesUntilDraw)) // Propably spinning on self play or just a draw
{
if (board.HalfMoveCount >= HalfMovesUntilDraw)
{
Debug.WriteLine("Draw by 50 moves rule...");
}
GameOverHandler();
}
else if (GetInputState() == InputState.WaitingOnOpponentMove)
{
// Extract the board location from the move string
PieceFile startFile = new PieceFile(bestMove[0]);
int startRank = Convert.ToInt16(bestMove[1]) - Convert.ToInt16('0');
PieceFile destFile = new PieceFile(bestMove[2]);
int destRank = Convert.ToInt16(bestMove[3]) - Convert.ToInt16('0');
ChessPiece foundPiece = board.FindPieceAt(startFile, startRank);
MoveInformation moveInfo = new MoveInformation(
new BoardSquare(startFile, startRank),
new BoardSquare(destFile, destRank),
foundPiece.Deployed, board.CurrentFEN);
moveInfo.Color = foundPiece.Color;
moveInfo.CastlingRights = board.ActivePlayerCastlingRights;
// When coming from the engine, we get the promotion detection for free
if (bestMove.Length == 5)
{
// Applied on the next move
PieceClass promotionJob = ChessBoard.PieceClassFromFen(bestMove[4]);
board.PromotePiece(startFile, startRank, destFile, destRank, promotionJob, ref moveInfo);
}
// Move the piece on the board, and add it to the official moves list
board.MovePiece(ref moveInfo);
// trigger a redraw
view.Invalidate();
// Apply the move the engine just gave us with the engine (update it's own move)
UpdateEnginePosition();
}
}
/// <summary>
/// Load piece images from a bitmap sheet. This overrides the unicode
/// text drawing for the pieces
/// </summary>
/// <param name="pieceImages">Bitmap image that contains the piece data.
/// It is assumed the pieces are arranged in 2 rows, with white on top
/// and black on bottom. The piece order should be K Q R B N P</param>
/// <param name="pieceSize">The size of a single piece</param>
void IChessBoardView.SetBitmapImages(Bitmap pieceImages, Size pieceSize)
{
// Extract each image from the bitmap and store it in a map (job+color:image)
chessPieceImageMap = new Dictionary <string, Bitmap>();
// This will not change in the loop (all destinations are the same size)
Rectangle destRect = new Rectangle(0, 0, pieceSize.Width, pieceSize.Height);
// This one will based on where we are in the image loop
Rectangle srcRect = new Rectangle(0, 0, pieceSize.Width, pieceSize.Height);
// Array of jobs in the order we expect to find them in the image
// This is the same for each row (top white, bottom black)
PieceClass[] jobs = new PieceClass[] { PieceClass.King, PieceClass.Queen,
PieceClass.Rook, PieceClass.Bishop, PieceClass.Knight, PieceClass.Pawn };
// Init loop variables
int jobIndex = 0;
PieceColor pieceColor = PieceColor.White;
// Loop over the assumed layout (2x6)
for (int imageRow = 0; imageRow < 2; imageRow++)
{
for (int imageCol = 0; imageCol < 6; imageCol++)
{
// Create a new bitmap of the reequired size
Bitmap b = new Bitmap(pieceSize.Width, pieceSize.Height);
using (Graphics g = Graphics.FromImage(b))
{
// Draw the portion of the larger image into the smaller one
// we just created for the piece
g.DrawImage(pieceImages, destRect, srcRect, GraphicsUnit.Pixel);
}
// Add the image to the map (mangle the color and the job for the key)
chessPieceImageMap.Add(GetPieceImageKey(jobs[jobIndex++], pieceColor), b);
// Shift over to the right by one piece width
srcRect.X += pieceSize.Width;
}
// Reset row variables
jobIndex = 0;
srcRect.X = 0;
srcRect.Y += pieceSize.Height;
// Switch colors
pieceColor = PieceColor.Black;
}
}
public string GetPieceType(int[] PiecePosition)
{
int i = 0;
while (i < Pieces.Count)
{
PieceClass piece = Pieces.ToArray()[i];
if (piece.GetLocation() == PiecePosition)
{
return(piece.GetName());
}
}
return(null);
}
/// <summary>
/// Create a new ChessPiece
/// </summary>
/// <param name="pieceColor">Color</param>
/// <param name="pieceClass">King, Queen, Rook, etc</param>
/// <param name="pieceFile">file location</param>
/// <param name="pieceRank">rank location</param>
public ChessPiece(PieceColor pieceColor, PieceClass pieceClass, PieceFile pieceFile, int pieceRank)
{
if (pieceClass == PieceClass.EnPassantTarget)
{
throw new ArgumentException();
}
// Save the parameters as fields
color = pieceColor;
job = pieceClass;
rank = pieceRank;
file = pieceFile;
deployed = false;
captured = false;
isReadyForPromotion = false;
}
/// <summary>
/// Process the input when waiting for the current player to select a move
/// </summary>
/// <param name="x">x coordinate in form</param>
/// <param name="y">y coordinate in form</param>
private void OnWaitingForMoveSelection(int x, int y)
{
BoardSquare square = ((IChessBoardView)view).GetSquare(x, y);
foreach (BoardSquare move in legalMoves)
{
if (move == square)
{
// Done - this is the move
MoveInformation moveInfo = new MoveInformation(
new BoardSquare(selectedPiece.File, selectedPiece.Rank), move, selectedPiece.Deployed, board.CurrentFEN);
moveInfo.Color = selectedPiece.Color;
moveInfo.CastlingRights = board.ActivePlayerCastlingRights;
Debug.WriteLine("Valid Move Detected: [{0},{1}]=>[{2},{3}]",
selectedPiece.File, selectedPiece.Rank, move.File, move.Rank);
// Need to detect promotion and launch dialog for it...
bool isPawnMovingToBackRank = (selectedPiece.Color == PieceColor.White) ? (moveInfo.End.Rank == 8) : (moveInfo.End.Rank == 1);
if ((selectedPiece.Job == PieceClass.Pawn) && isPawnMovingToBackRank)
{
PieceClass promotionJob = view.ChoosePromotionJob();
board.PromotePiece(moveInfo.Start.File, moveInfo.Start.Rank, moveInfo.End.File, moveInfo.End.Rank, promotionJob, ref moveInfo);
}
// Always returns true now
board.MovePiece(ref moveInfo);
view.Invalidate();
Debug.WriteLine(String.Format("Fullmoves: {0}", board.FullMoveCount));
Debug.WriteLine(String.Format("Halfmoves: {0}", board.HalfMoveCount));
Debug.WriteLine(String.Format("WhCastle: {0}", board.WhiteCastlingRights.ToString()));
Debug.WriteLine(String.Format("BlCastle: {0}", board.BlackCastlingRights.ToString()));
// Update the position with the engine
UpdateEnginePosition();
break;
}
}
// Either way this gets cleared
legalMoves.Clear();
((IChessBoardView)view).ClearHiglightedSquares();
selectedPiece = null;
}
/// <summary>
/// Helper to return a FEN char for a job, color matters
/// </summary>
/// <param name="pieceClass">Class to convert</param>
/// <param name="color">PieceColor Black is lowercase</param>
/// <returns></returns>
public static char FenCharFromPieceClass(PieceClass pieceClass, PieceColor color)
{
char result;
switch (pieceClass)
{
case PieceClass.King:
result = 'k';
break;
case PieceClass.Queen:
result = 'q';
break;
case PieceClass.Rook:
result = 'r';
break;
case PieceClass.Bishop:
result = 'b';
break;
case PieceClass.Knight:
result = 'n';
break;
case PieceClass.Pawn:
result = 'p';
break;
default:
throw new ArgumentOutOfRangeException();
}
if (color == PieceColor.White)
{
result = Char.ToUpper(result);
}
return(result);
}
/// <summary>
/// Converts a class to its character. This does not need to differentiate
/// case for color like FEN does, it's just needed to update the engine.
/// The starting position or FEN for the engine determines the active player
/// </summary>
/// <param name="job">Job to convert</param>
/// <returns></returns>
public static char PieceClassToPromotionChar(PieceClass job)
{
if (job == PieceClass.Queen)
{
return('q');
}
if (job == PieceClass.Rook)
{
return('r');
}
if (job == PieceClass.Knight)
{
return('n');
}
if (job == PieceClass.Bishop)
{
return('b');
}
// King and Pawn are missing from the normal list, as this is only
// used in promotion, and you cannot promote to yourself or to the king
throw new ArgumentOutOfRangeException();
}
public void BasicTests()
{
// Valid: { k, q, r, b, n, p }
// Others: ArgumentOutOfRangeException
Tuple <char, PieceClass>[] testDataValid =
{
new Tuple <char, PieceClass>('k', KING),
new Tuple <char, PieceClass>('q', QUEN),
new Tuple <char, PieceClass>('r', ROOK),
new Tuple <char, PieceClass>('b', BISH),
new Tuple <char, PieceClass>('n', KNHT),
new Tuple <char, PieceClass>('p', PAWN),
};
foreach (Tuple <char, PieceClass> tuple in testDataValid)
{
Trace.WriteLine(String.Format("Verifying {0} == {1}", tuple.Item1, tuple.Item2.ToString()));
Assert.AreEqual(ChessBoard.PieceClassFromFen(tuple.Item1), tuple.Item2);
}
// Not a complete list, but the rest of [a-z][A-Z] that isn't valid plus some others
string testDataInvalid = "acdefghijlmostuvwxyzACDEFGHIJLMOSTUVWXYZ0123456789!@#$%^&*";
foreach (char c in testDataInvalid)
{
bool caught = false;
try
{
Trace.WriteLine(String.Format("Verifying {0} throws ArgumentOutOfRangeException", c));
PieceClass neverGetsAssigned = ChessBoard.PieceClassFromFen(c);
}
catch (ArgumentOutOfRangeException)
{
caught = true;
}
Assert.IsTrue(caught);
}
}
public void Move(GameObject Piece, int[] newPosition)
{
int i = 0;
GameObject[] pieces = InGamePieces.ToArray();
while (i < InGamePieces.Count)
{
if (pieces[i] == Piece)
{
break;
}
}
int[] PiecePosition = Pieces.ToArray()[i].GetLocation();
i = 0;
while (i < Pieces.Count)
{
PieceClass piece = Pieces.ToArray()[i];
if (piece.GetLocation() == PiecePosition)
{
piece.SetPiece(newPosition);
}
}
}
/// <summary>
/// Small helper to get the mangled key for an image
/// </summary>
/// <param name="job"></param>
/// <param name="color"></param>
/// <returns></returns>
private static string GetPieceImageKey(PieceClass job, PieceColor color)
{
return(String.Concat(job.ToString(), color.ToString()));
}
/// <summary>
/// When a pawn has made it to the back rank, it can be promoted. This method
/// will mark a piece as needing promotion on the next move. We don't want to
/// change the job until it has moved to keep inline with the rest of the logic
/// </summary>
/// <param name="startFile"></param>
/// <param name="startRank"></param>
/// <param name="targetFile"></param>
/// <param name="targetRank"></param>
/// <param name="promotionClass"></param>
/// <param name="moveInfo">Detailed move info</param>
public void PromotePiece(PieceFile startFile, int startRank, PieceFile targetFile, int targetRank, PieceClass promotionClass, ref MoveInformation moveInfo)
{
ChessPiece piece = FindPieceAt(startFile, startRank);
int validRank = (piece.Color == PieceColor.White) ? 8 : 1;
if (targetRank != validRank)
{
throw new ArgumentOutOfRangeException();
}
// Find the pawn and mark it
if (piece.Job != PieceClass.Pawn)
{
// Logic check
throw new InvalidOperationException();
}
moveInfo.PromotionJob = promotionClass;
piece.PromoteOnNextMove(promotionClass);
}
public void BasicPropertiesTests()
{
BoardSquare startSquare = new BoardSquare(new PieceFile('b'), 6);
BoardSquare endSquare = new BoardSquare(new PieceFile('e'), 3);
bool previouslyDeployed = true;
Trace.WriteLine(String.Format("Constucting default MoveInformation[{0}:{1}->{2}:{3}] Deployed: {4}",
startSquare.File.ToString(), startSquare.Rank, endSquare.File.ToString(), endSquare.Rank, previouslyDeployed));
MoveInformation testMove = new MoveInformation(startSquare, endSquare, previouslyDeployed, ChessBoard.InitialFENPosition);
// First verify the basic properties set on creation
Trace.WriteLine(String.Format("Verifying start and end squares..."));
Assert.AreEqual(testMove.Start, startSquare);
Trace.WriteLine(String.Format("Verifying FirstMove..."));
Assert.IsFalse(testMove.FirstMove);
// Now set some extraneous properties
Trace.WriteLine(String.Format("Verifying Color set/get..."));
PieceColor testColor = PieceColor.Black;
testMove.Color = testColor;
Assert.AreEqual(testMove.Color, testColor);
// CastlingRights
Trace.WriteLine(String.Format("Verifying CastlingRights set/get..."));
BoardSide testCastlingRights = BoardSide.Queen;
testMove.CastlingRights = testCastlingRights;
Assert.AreEqual(testMove.CastlingRights, testCastlingRights);
// PromotionClass
Trace.WriteLine(String.Format("Verifying PromotionJob set/get..."));
PieceClass testPromotionClass = PieceClass.Knight;
Assert.IsFalse(testMove.IsPromotion);
testMove.PromotionJob = testPromotionClass;
Assert.AreEqual(testMove.PromotionJob, testPromotionClass);
Assert.IsTrue(testMove.IsPromotion);
// CapturedPiece and CastlingRook are mutually exclusive Properties
// neither can be checked without first being set or an exception is
// thrown. Also, if one is set and you check the other, an exception
// is thrown
// IsCapture and IsCastle can be used to check if either is set
// without the exception
Trace.WriteLine(String.Format("Verifying IsCapture and IsCastle initially false..."));
Assert.IsFalse(testMove.IsCapture);
Assert.IsFalse(testMove.IsCastle);
Trace.WriteLine(String.Format("Set a capture piece and verify IsCapture and CapturedPiece..."));
ChessPiece testPiece = new ChessPiece(PieceColor.White, PieceClass.Pawn, new PieceFile('c'), 2);
testMove.CapturedPiece = testPiece;
Assert.IsTrue(testMove.IsCapture);
Assert.AreEqual(testMove.CapturedPiece, testPiece);
try
{
Trace.WriteLine(String.Format("Attempting to get the CastlingRook (invalid)..."));
ChessPiece rook = testMove.CastlingRook;
}
catch (InvalidOperationException)
{
Trace.WriteLine(String.Format("Caught InvalidOperationException..."));
}
// Recreate the test move to clear the captured piece
testMove = new MoveInformation(startSquare, endSquare, previouslyDeployed, ChessBoard.InitialFENPosition);
Trace.WriteLine(String.Format("Set a castling rook and verify IsCastle and CsatlingRook..."));
ChessPiece testRook = new ChessPiece(PieceColor.White, PieceClass.Rook, new PieceFile('a'), 1);
testMove.CastlingRook = testRook;
Assert.IsTrue(testMove.IsCastle);
Assert.AreEqual(testMove.CastlingRook, testRook);
try
{
Trace.WriteLine(String.Format("Attempting to get the CapturedPiece (invalid)..."));
ChessPiece capture = testMove.CapturedPiece;
}
catch (InvalidOperationException)
{
Trace.WriteLine(String.Format("Caught InvalidOperationException..."));
}
// Setting a non-Rook to a castling rook will throw
testMove = new MoveInformation(startSquare, endSquare, previouslyDeployed, ChessBoard.InitialFENPosition);
try
{
testMove.CastlingRook = testPiece;
}
catch (ArgumentException)
{
Trace.WriteLine(String.Format("Caught ArgumentException..."));
}
}
/// <summary>
/// Promote the piece to a new class
/// </summary>
/// <param name="newLotInLife">PieceClass after promotion e.g. Queen
/// 99.99999% of the time</param>
public void PromoteOnNextMove(PieceClass newLotInLife)
{
isReadyForPromotion = true;
promotionClass = newLotInLife;
}
