OOP - HW2 Milestone: C (JBrainTetris.java)

import javax.swing.*;
import java.awt.*;

public class JBrainTetris extends JTetris {
    private JCheckBox brainMode;
    private Brain brain;
    private Piece lastPiece;
    private Brain.Move move;
    private JLabel status;
    private JPanel little;
    private JSlider adversary;

    /**
     * Creates a new JTetris where each tetris square
     * is drawn with the given number of pixels.
     *
     * @param pixels
     */
    JBrainTetris(int pixels) {
        super(pixels);

        this.brain = new DefaultBrain();
        this.lastPiece = null;

    }

    @Override
    public JComponent createControlPanel() {
        JPanel panel = (JPanel) super.createControlPanel();

        // Brain checkbox
        panel.add(new JLabel("Brain:"));
        brainMode = new JCheckBox("Brain active");
        panel.add(brainMode);

        // make a little panel, put a JSlider in it. JSlider responds to getValue()
        little = new JPanel();
        little.add(new JLabel("Adversary:"));
        adversary = new JSlider(0, 100, 0); // min, max, current
        adversary.setPreferredSize(new Dimension(100, 15));
        little.add(adversary);

        // now add little to panel of controls
        panel.add(little);

        // Status label
        status = new JLabel("OK");
        panel.add(status);

        return panel;
    }

    @Override
    public Piece pickNextPiece() {
        int randVal = 1 + random.nextInt(99);

        if (adversary.getValue() <= randVal) {
            status.setText("OK");
            return super.pickNextPiece();
        }

        double score = Integer.MIN_VALUE;
        Piece resPiece = null;
        for (Piece piece : super.pieces) {
            board.undo();
            Brain.Move testMove = brain.bestMove(this.board, piece, board.getHeight(), null);
            if (testMove.score > score) {
                score = testMove.score;
                resPiece = piece;
            }
        }
        status.setText("*OK*");
        return resPiece;
    }

    @Override
    public void tick(int verb) {

        if (brainMode.isSelected()) {
            if (this.currentPiece != lastPiece) {
                board.undo();
                move = brain.bestMove(this.board, this.currentPiece, board.getHeight(), null);
                lastPiece = this.currentPiece;
            }

            if (move != null) {
                if (!move.piece.equals(this.currentPiece)) {
                    super.tick(ROTATE);
                }

                int dx = move.x - this.currentX;
                if (dx != 0) {
                    super.tick((dx > 0) ? RIGHT : LEFT);
                }
            }
        }
        super.tick(verb);
    }

    public static void main(String[] args) {
        // Set GUI Look And Feel Boilerplate.
        // Do this incantation at the start of main() to tell Swing
        // to use the GUI LookAndFeel of the native platform. It's ok
        // to ignore the exception.
        try {
            UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
        } catch (Exception ignored) {
        }

        JTetris tetris = new JBrainTetris(16);
        JFrame frame = JTetris.createFrame(tetris);
        frame.setVisible(true);
    }
}