Chess-Project-Rutgers-Software-Methodology-/King.java at main · DylanAbry/Chess-Project-Rutgers-Software-Methodology- · GitHub

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package chess;

public class King extends Piece {

	// King class
	public boolean kingHasMoved = false;
	public King (char file, int rank, boolean isBlack) {
		super (file, rank, isBlack);
	}

	@Override
	public boolean canMove (char startFile, int startRank, char newFile,
			int newRank, Board board) {

		if (!this.kingHasMoved && startRank == newRank) {

			// Check castling first, then classic moves

			if (newFile == (char)(startFile + 2)) {

				Piece rook = board.getPiece('h', startRank);
	            if (rook instanceof Rook && !((Rook) rook).checkIfMoved()
	                && board.pathClear(startFile, startRank, (char)('h' - 1), startRank)
	                && !Chess.isSquareUnderAttack((char)(startFile + 1), startRank, this.isBlack, board)
	                && !Chess.isSquareUnderAttack(newFile, newRank, this.isBlack, board) &&
	                !Chess.isSquareUnderAttack(startFile, startRank, this.isBlack, board)){
	                return true;
	            }
			}

			if (newFile == (char)(startFile - 2)) {

				Piece rook = board.getPiece('a', startRank);
				if (rook instanceof Rook && !((Rook) rook).checkIfMoved()
						&& board.pathClear(startFile, startRank, (char)('a' + 1), startRank)
		                && !Chess.isSquareUnderAttack((char)(startFile - 1), startRank, this.isBlack, board)
		                && !Chess.isSquareUnderAttack(newFile, newRank, this.isBlack, board) &&
		                !Chess.isSquareUnderAttack(startFile, startRank, this.isBlack, board)) {

					return true;
				}
			}
		}

		if (!isDiffSquare(startFile, startRank, newFile, newRank)) return false;

		if ((Math.abs(newFile - startFile) <= 1 && Math.abs(newRank - startRank) <= 1)) {

			Piece newLoc = board.getPiece(newFile, newRank);

			if (newLoc == null) {

				return true;
			}

			if (newLoc.isBlack != this.isBlack) return true;

		}

		return false;

	}

	public void officiallyMoved() {

		kingHasMoved = true;
	}

	public boolean checkIfMoved() {

		return kingHasMoved;
	}

	@Override
	public Piece clone() {
		King cloned = new King(this.getFile(), this.getRank(), this.isBlack);
	    cloned.kingHasMoved = this.kingHasMoved;
	    return cloned;
	}

	@Override
	public String getSymbol() {

		return ("K");
	}
}