public bool makeMove(string col, Move move)
{
uint x1 = move.FromX;
uint y1 = move.FromY;
uint x2 = move.ToX;
uint y2 = move.ToY;
Piece p = getPieceAt(x1, y1);
Square s1 = getSquareAt(x1, y1);
Square s2 = getSquareAt(x2, y2);
bool castling = false;
bool enPassant = false;
// Check if squares are ok.
if (s1 == null || s2 == null)
{
return(false);
}
// Check if piece is ok.
if (p == null)
{
return(false);
}
if (p.getColour() != col)
{
return(false);
}
// Move is legal
//Check if this is a castling
if ((p is King) && (((x1 - x2) == 2) || ((x2 - x1) == 2)))
{
castling = true;
}
// Special handling for pawns
if ((p is Pawn))
{
// Check double step
if (Math.Abs((int)move.FromY - (int)move.ToY) == 2)
{
((Pawn)p).setDoubleStepTurn(getTurn());
}
//Check if en passant
if ((getSquareAt(x2, y2).getPiece() == null) && (x1 != x2))
{
enPassant = true;
}
}
// Remove from old position
s1.removePiece();
// Add to new position
if ((p is Pawn && p.getColour() == "white" && y2 == 7) ||
(p is Pawn && p.getColour() == "black" && y2 == 0))
{
p = new Queen(x1, y1, p.getColour());
}
s2.setPiece(p);
p.move(x2, y2);
// Handles the special castling case
if (castling)
{
uint x2rook;
uint x1rook;
if (x2 > x1)// Castling right
{
x1rook = 7;
x2rook = x2 - 1;
}
else
{
x1rook = 0;
x2rook = x2 + 1;
}
Square s3 = getSquareAt(x1rook, y1);
Piece p3 = s3.getPiece();
Square s4 = getSquareAt(x2rook, y1);
s3.removePiece();
s4.setPiece(p3);
p3.move(x2rook, y2);
}
// Handles the special en passant case
if (enPassant)
{
int yMod;
if (p.getColour() == "white")
{
yMod = -1;
}
else
{
yMod = 1;
}
Square s3 = getSquareAt(x2, (uint)(y2 + yMod));
Piece p3 = s3.getPiece();
s3.removePiece();
}
updateCover();
return(true);
}