private void removeCapturedPiece(Move move) {
Piece capturedPiece = null;
if (MoveType.CAPTURE.equals(move.moveType())) {
capturedPiece = ((CaptureMove) move).opposingPiece();
} else if (MoveType.EN_PASSANT.equals(move.moveType())) {
capturedPiece = ((EnPassantMove) move).opposingPiece();
} else if (MoveType.PROMOTION.equals(move.moveType())) {
capturedPiece = ((PromotionMove) move).opposingPiece();
}
if (capturedPiece != null) {
capturedPieces.get(capturedPiece.color()).remove(capturedPiece);
}
}
public Move move(Square startSquare, Square endSquare) {
Move move = InvalidMove.execute();
if (startSquareContainsPlayersPiece(startSquare)) {
move = executeMove(startSquare, endSquare);
if (!move.moveType().equals(MoveType.INVALID)) {
moves.add(move);
changePlayersTurn();
}
}
return move;
}
public Move promote(Square startSquare, Square endSquare, PieceType pieceType) {
Move move = InvalidMove.execute();
if (PromotionMove.canBeExecuted(board, startSquare, endSquare, pieceType)) {
move = PromotionMove.execute(board, startSquare, endSquare, pieceType);
}
if (MoveType.PROMOTION.equals(move.moveType())) {
if (board.inCheck(playersTurn)) {
move.undo(board);
move = InvalidMove.execute();
} else {
PromotionMove promotionMove = (PromotionMove) move;
if (promotionMove.opposingPiece() != null) {
capturedPieces
.get(promotionMove.opposingPiece().color())
.add(promotionMove.opposingPiece());
}
moves.add(move);
changePlayersTurn();
}
}
return move;
}