TurnPanel.java

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

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

public class TurnPanel extends JPanel implements MouseListener{
    static int divisor = 4;
    /*
    ---------------------------------------
    | Back Button                         |
    |                 Title               |
    |  AIFIrst Button playerFirst button  |
    ---------------------------------------
     */
    //Constants for panel layout
    static final int SCREEN_WIDTH = 1500/2;
    static final int SCREEN_HEIGHT= 1000/2;
    static final int BOARD_WIDTH = 700/divisor;
    static final int BOARD_HEIGHT = 600/divisor;
    static final int UNIT_SIZE = 100/2;
    static final int BOARD_X = 125;
    static final int BOARD_Y = 0;
    static final int GAME_UNITS = (BOARD_WIDTH * BOARD_HEIGHT) / UNIT_SIZE;
    static int MULTIPLIER = 2;
    static final int OFFSET = 35;
    int clicks = 0;
    static final Color COLOURS[] = {Color.red, Color.ORANGE, Color.yellow, Color.green, Color.cyan, Color.blue,  new Color(75,0,130), };

    static int idx = 0;

    //All Panels
    JPanel backGround1 = new JPanel() {
        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            g.setColor(lightBlue);
            g.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);

            //draw emptyCircles
            int index = idx;
            for (int j = 0; j < SCREEN_HEIGHT / UNIT_SIZE; j++) {
                for (int i = 0; i < SCREEN_WIDTH / UNIT_SIZE; i++) {
                    index = (index+1)% COLOURS.length;
                    Color colour = COLOURS[index];
                    g.setColor(colour);
                    g.fillOval(i * UNIT_SIZE * MULTIPLIER-OFFSET, j * UNIT_SIZE * MULTIPLIER-OFFSET, UNIT_SIZE*MULTIPLIER, UNIT_SIZE*MULTIPLIER);
                    g.setColor(Color.BLACK);
                    g.drawOval(i * UNIT_SIZE * MULTIPLIER-OFFSET, j * UNIT_SIZE * MULTIPLIER-OFFSET, UNIT_SIZE*MULTIPLIER, UNIT_SIZE*MULTIPLIER);
                }
            }
            idx+=6;
        }
    };
    JButton backMenuButton = new JButton("<--");
    JPanel backGround2 = new JPanel() {
        public void paintComponent(Graphics g) {
            super.paintComponent(g);
            g.setColor(lightBlue);
            g.fillRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);

            //draw emptyCircles
            int tokenCount = 1, index = idx;
            for (int j = 0; j < SCREEN_HEIGHT / UNIT_SIZE; j++) {
                for (int i = 0; i < SCREEN_WIDTH / UNIT_SIZE; i++) {
                    index = (index+1)% COLOURS.length;
                    Color colour = COLOURS[index];
                    //Color colour = (tokenCount%2 == 0? Color.red: Color.yellow);
                    g.setColor(colour);
                    g.fillOval(i * UNIT_SIZE * MULTIPLIER-OFFSET, j * UNIT_SIZE * MULTIPLIER-OFFSET, UNIT_SIZE*MULTIPLIER, UNIT_SIZE*MULTIPLIER);
                    g.setColor(Color.BLACK);
                    g.drawOval(i * UNIT_SIZE * MULTIPLIER-OFFSET, j * UNIT_SIZE * MULTIPLIER-OFFSET, UNIT_SIZE*MULTIPLIER, UNIT_SIZE*MULTIPLIER);
                    tokenCount++;
                }
            }
            idx+=6;
        }
    };

    //all panels
    JPanel titlePanel = new JPanel();
    JLabel titleLabel = new JLabel("Connect 4");
    JLabel SoundLabel = new JLabel();
    JLabel MuteLabel = new JLabel();

    //All buttons used
    JButton AIFirstButton = new JButton("AI First");
    JButton playerFirstButton = new JButton("Player First");
    JButton SoundButton = new JButton(".");
    JButton MuteButton = new JButton("");

    Font fileNameFont = new Font("DialogInput", Font.BOLD, 30);
    Font titleFont = new Font("DialogInput", Font.BOLD, 75);

    static final Color lightBlue = new Color(177, 225, 242);

    TurnPanel() {
        setPreferredSize(new Dimension(SCREEN_WIDTH, SCREEN_HEIGHT));
        setBackground(lightBlue);
        setFocusable(true);
        setLayout(null);
        addMouseListener(this);
        addKeyListener(new MyKeyAdapter());

        //back menu set up and formatting
        backMenuButton.setBorder(BorderFactory.createLineBorder(Color.black));
        backMenuButton.setFont(new Font("DialogInput", Font.BOLD, 15));
        backMenuButton.setBounds(UNIT_SIZE / 4, UNIT_SIZE / 2, UNIT_SIZE + 20, UNIT_SIZE);
        add(backMenuButton);

        //Mute button and label setup
        MuteLabel.setIcon(new ImageIcon("Mute.jpg"));
        MuteButton.add(MuteLabel);
        MuteButton.setBackground(Color.WHITE);
        MuteButton.setBounds(UNIT_SIZE*13+10, UNIT_SIZE/2, UNIT_SIZE+25, UNIT_SIZE);
        add(MuteButton);
        MuteButton.setVisible(false);

        //Sound button label and button set up
        SoundLabel.setIcon(new ImageIcon("Sound.jpg"));
        SoundButton.add(SoundLabel);
        SoundButton.setBackground(Color.WHITE);
        SoundButton.setBounds(UNIT_SIZE*13+10, UNIT_SIZE/2, UNIT_SIZE+25, UNIT_SIZE);
        add(SoundButton);

        //title panel set up
        titlePanel.setBorder(BorderFactory.createLineBorder(Color.black));
        titlePanel.setBackground(Color.white);
        titlePanel.setBounds(UNIT_SIZE * 2, UNIT_SIZE, UNIT_SIZE * 11, UNIT_SIZE * 2 + 10);
        titleLabel.setFont(titleFont);
        titlePanel.add(titleLabel);
        add(titlePanel);

        //AIFirst button formatting
        AIFirstButton.setBorder(BorderFactory.createLineBorder(Color.black));
        AIFirstButton.setFont(fileNameFont);
        AIFirstButton.setBounds(UNIT_SIZE * 2, UNIT_SIZE*5, UNIT_SIZE*5, UNIT_SIZE*2);
        add(AIFirstButton);

        //playerFirst button set up
        playerFirstButton.setBorder(BorderFactory.createLineBorder(Color.black));
        playerFirstButton.setFont(fileNameFont);
        playerFirstButton.setBounds(UNIT_SIZE * 8, UNIT_SIZE*5, UNIT_SIZE*5, UNIT_SIZE*2);
        add(playerFirstButton);

        //backsground 1 and 2 set up
        backGround1.setBounds(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
        backGround2.setBounds(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
        add(backGround1);

    }
    //every time a keyboard is pressed, the background changes
    public class MyKeyAdapter extends KeyAdapter {

        public void keyPressed(KeyEvent e){
            if (clicks%2 == 0) {
                remove(backGround1);
                add(backGround2);
            }
            else {
                add(backGround1);
                remove(backGround2);
            }
            clicks++;
            repaint();
            revalidate();
        }
    }

    //on click, change the background.
    public void mouseClicked(MouseEvent e) {
        if (clicks%2 == 0) {
            remove(backGround1);
            add(backGround2);
        }
        else {
            add(backGround1);
            remove(backGround2);
        }
        clicks++;
        repaint();
        revalidate();
    }

    @Override
    public void mousePressed(MouseEvent e) {

    }

    @Override
    public void mouseReleased(MouseEvent e) {

    }

    @Override
    public void mouseEntered(MouseEvent e) {

    }

    @Override
    public void mouseExited(MouseEvent e) {

    }
}