private void handleMoveEnPassant(Position newMovePos, EnPassantedPosition opponentPos)
{
int xIncrement = 1;
//int yIncrement = 1;
int zIncrement = 1;
if (piece.player is Player2)
{
xIncrement = -1;
//yIncrement = -1;
zIncrement = -1;
}
if (positionIsValid(newMovePos))
{
/*important: handle changing coords according to the player*/
AbstractPiece opponent = null;
switch (opponentPos)
{
case EnPassantedPosition.Left: opponent = Chessboard.getReference()[piece.position.x - xIncrement, piece.position.y, piece.position.z]; break;
case EnPassantedPosition.Right: opponent = Chessboard.getReference()[piece.position.x + xIncrement, piece.position.y, piece.position.z]; break;
case EnPassantedPosition.Up: opponent = Chessboard.getReference()[piece.position.x, piece.position.y + zIncrement, piece.position.z]; break;
case EnPassantedPosition.Down: opponent = Chessboard.getReference()[piece.position.x, piece.position.y - zIncrement, piece.position.z]; break;
}
if (opponent == null)
{
return;
}
if ((opponent.player == piece.player) || (opponent.name != ChessNames.Pawn))
{
return;
}
if (!((Pawn)opponent).hasMovedTwoBlocks)
{
return;
}
if (!History.getReference().peakPhase().oldPiece.Equals(opponent))
{
return;
}
//Stack operations to check if it's the last piece moved!! //ATTENTION!
//It's all ok! add it to available moves
//opponent.isCapturable = true; //IMPORTANT FOR A.I.
opponent.isCapturable = true;
moves.Add(newMovePos);
}
}
public HistoryPhase(AbstractPiece oldPiece, Position oldPos, AbstractPiece newPiece, Position newPos)
{
this.newPiece = newPiece;
this.newPos = newPos;
newHasMoved = (newPiece == null) ? false : newPiece.hasMoved;
oldHasMoved = oldPiece.hasMoved;
this.oldPiece = oldPiece;
this.oldPos = oldPos;
}
public RookMoves(AbstractPiece piece) : base(piece)
{
}
public BishopMoves(AbstractPiece piece) : base(piece)
{
}
/* Chessboard[0,0,0] = King */
//this is actually the moveTo facility
/// <summary>
/// A helper method 2 the moveTo() method,this where the actual moving happens .
/// </summary>
/// <param name="x"></param>
/// <param name="y"></param>
/// <param name="z"></param>
/// <returns></returns>
public AbstractPiece this[int x, int y, int z]
{
get { return(matrix[x, y, z]); }
set
{
if (value == null)
{
matrix[x, y, z] = null;
return;
}
if (((AbstractPiece)value).name == ChessNames.King)
{
int kingX = ((AbstractPiece)value).position.x;
int kingY = ((AbstractPiece)value).position.y;
int kingZ = ((AbstractPiece)value).position.z;
if ((kingX - x == -2) && (kingX == 3 || kingX == 4))
{
AbstractPiece rook = matrix[7, kingY, kingZ];
matrix[7, kingY, kingZ] = null;
rook.position.x = kingX + 1;
matrix[kingX + 1, kingY, kingZ] = rook;
}
if (kingX - x == 2 && (kingX == 3 || kingX == 4))
{
AbstractPiece rook = matrix[0, kingY, kingZ];
matrix[0, kingY, kingZ] = null;
rook.position.x = kingX - 1;
matrix[kingX - 1, kingY, kingZ] = rook;
}
}
if (((AbstractPiece)value).name == ChessNames.Pawn)
{
int oldPosX = ((AbstractPiece)value).position.x;
int oldPosY = ((AbstractPiece)value).position.y;
int oldPosZ = ((AbstractPiece)value).position.z;
//handling first move (two blocks)
if ((Math.Abs(oldPosY - y) == 2) ||
(Math.Abs(oldPosZ - z) == 2))
{
//Do internal swap
AbstractPiece temp1 = (AbstractPiece)value;
//original position
matrix[temp1.position.x, temp1.position.y, temp1.position.z] = null;
//new position
((Pawn)temp1).hasMovedTwoBlocks = true;
temp1.position.x = x;
temp1.position.y = y;
temp1.position.z = z;
matrix[x, y, z] = value;
return;
}
else
{
((Pawn)((AbstractPiece)value)).hasMovedTwoBlocks = false;
}
//handle unpassant. here only we will handle capturing the piece
//I'm not sure, but it looks something like this not the following:
//if((Math.Abs(x-oldPosX) != 0) || (Math.Abs(z-oldPosZ) != 0)) //it has captured something
//this is correct probably
if (Math.Abs(x - oldPosX) != 0)
{
if (Chessboard.getReference()[x, y, z] == null)
{//check if it has captured by unpassant move
if ((value.player is Player2) && (z - oldPosZ < 0))
{
Chessboard.getReference()[x, y, z + 1].IsCaptured = true;
Chessboard.getReference()[x, y, z + 1] = null;
}
else
{
if ((value.player is Player1) && (z - oldPosZ > 0))
{
Chessboard.getReference()[x, y, z - 1].IsCaptured = true;
Chessboard.getReference()[x, y, z - 1] = null;
}
}
}
}
}
AbstractPiece temp = (AbstractPiece)value;
//original position
matrix[temp.position.x, temp.position.y, temp.position.z] = null;
//new position
temp.position.x = x;
temp.position.y = y;
temp.position.z = z;
matrix[x, y, z] = value;
}
}
public void undo()
{
if (currentPhase < 0)
{
return;
}
//reverse camera and turn
GameManager.getReference(null).toggleTurn(true);
HistoryPhase currHP = history[currentPhase];
if (currHP.newPiece == null) //we've moved to a null position
{
//check castling
if (currHP.oldPiece.GetType() == typeof(King))
{
if (Math.Abs(currHP.oldPos.x - currHP.newPos.x) > 1) //i.e. castling happened
{
//just restore the Rook as well
//we have to know where the rook is
if (currHP.newPos.x < currHP.oldPos.x) //rook is left
{
AbstractPiece curRook = vchessboard.ModelAt(currHP.newPos.x + 1, currHP.newPos.y, currHP.newPos.z).LogicalPieceRef;
Chessboard.getReference()[0, currHP.newPos.y, currHP.newPos.z] = curRook;
Console.WriteLine(curRook);
}
else
{
AbstractPiece curRook = vchessboard.ModelAt(currHP.newPos.x - 1, currHP.newPos.y, currHP.newPos.z).LogicalPieceRef;
Chessboard.getReference()[7, currHP.newPos.y, currHP.newPos.z] = curRook;
}
}
}
//check for unpassant move
if (currHP is PawnHistoryPhase)
{
//upassant = changing direction on X axis
if (Math.Abs(currHP.oldPos.x - currHP.newPos.x) == 1)
{
//Just restore the captured pawn, the rest of the code
//restores this pawn
AbstractPiece capturedPawn = vchessboard.LogicalModelAt(currHP.newPos.x, currHP.newPos.y, currHP.oldPos.z);
Chessboard.getReference()[currHP.newPos.x, currHP.newPos.y, currHP.oldPos.z] = capturedPawn;
capturedPawn.IsCaptured = false;
((Pawn)capturedPawn).hasMovedTwoBlocks = true;
}
}
Chessboard.getReference()[currHP.oldPos.x, currHP.oldPos.y, currHP.oldPos.z] = currHP.oldPiece;
currHP.oldPiece.position = currHP.oldPos;
if (currHP is PawnHistoryPhase)
{
//restore previous state (just to check if it has moved two steps forward
((Pawn)currHP.oldPiece).hasMovedTwoBlocks = ((PawnHistoryPhase)currHP).hasMovesTwoBlocks;
}
currHP.oldPiece.hasMoved = currHP.oldHasMoved;
currentPhase--;
}
else //we've captured something
{
Chessboard.getReference()[currHP.oldPos.x, currHP.oldPos.y, currHP.oldPos.z] =
currHP.oldPiece;
currHP.oldPiece.position = currHP.oldPos;
currHP.oldPiece.isSelected = false;
Chessboard.getReference()[currHP.newPos.x, currHP.newPos.y, currHP.newPos.z] =
currHP.newPiece;
currHP.newPiece.IsCaptured = false; //for rendering
currHP.newPiece.isSelected = false;
currentPhase--;
}
PanelHistory.getReference().addMessage("Undo: " + GameManager.getReference(null).curPlayer().ToString() + " moved " + currHP.oldPiece.ToString() + " back from " + currHP.oldPos.ToString() + " to " + currHP.newPos.ToString(), GameManager.getReference(null).isPlayer1Turn());
}
public void pushPhase(AbstractPiece newPiece, Position newPos, AbstractPiece oldPiece, Position oldPos)
{
history.Add(new HistoryPhase(newPiece, newPos, oldPiece, oldPos));
//PanelInfo event
}
public PawnMoves(AbstractPiece piece) : base(piece)
{
}
public QueenMoves(AbstractPiece piece) : base(piece)
{
rookMoves = new RookMoves(piece);
bishopMoves = new BishopMoves(piece);
}
/// <summary>
/// The constructor takes one parameter which is the moving AbstractPiece
/// </summary>
/// <param name="piece"></param>
public AbstractMove(AbstractPiece piece)
{
this.piece = piece;
moves = new List <Position>();
}
public PawnHistoryPhase(Pawn oldPiece, Position oldPos, AbstractPiece newPiece, Position newPos)
: base((AbstractPiece)oldPiece, oldPos, newPiece, newPos)
{
hasMovesTwoBlocks = oldPiece.hasMovedTwoBlocks;
}
private bool castlingIsOk(CastleAllignment castleAllign)
{
int rookX = ((castleAllign == CastleAllignment.Left) ? 0 : 7);
AbstractPiece temp = Chessboard.getReference()[rookX, piece.position.y, piece.position.z];
if (
(temp != null) && (temp is Rook) &&
(!temp.hasMoved) && (!piece.hasMoved) &&
(!((King)piece).isThreatend)
)
{
//check to see if the path is clear
int kingX = piece.position.x;
//check if there are any piece along the way
//compare kingX with rookX to choose what pieces to check
int xIncrement = (kingX > rookX ? -1 : 1);
List <Position> freePieces = new List <Position>();
freePieces.Add(new Position(kingX + xIncrement, piece.position.y, piece.position.z));
freePieces.Add(new Position(kingX + (2 * xIncrement), piece.position.y, piece.position.z));
if (xIncrement == -1)
{
if (Chessboard.getReference()[kingX + (3 * xIncrement), piece.position.y, piece.position.z] != null)
{
return(false);
}
freePieces.Add(new Position(kingX + (3 * xIncrement), piece.position.y, piece.position.z));
}
//get enemy pieces
List <AbstractPiece> enemyPieces =
Chessboard.getReference().getNotCapturedEnemies
(Chessboard.getReference()[piece.position.x, piece.position.y, piece.position.z].player);
foreach (Position freePiece in freePieces)
{
if (Chessboard.getReference()[freePiece.x, freePiece.y, freePiece.z] != null)
{
return(false);
}
foreach (AbstractPiece enemyPiece in enemyPieces)
{
List <Position> enemyAvailableMoves = enemyPiece.getAvailableMoves();
foreach (Position enemyAvailableMove in enemyAvailableMoves)
{
if (enemyAvailableMove.x == freePiece.x && enemyAvailableMove.y == freePiece.y && enemyAvailableMove.z == freePiece.z)
{
return(false);
}
}
}
}
;
return(true);
}
return(false);
}
public KingMoves(AbstractPiece piece)
: base(piece)
{
//Empty Constructor
}