Projekt. Etap 5 – klejenie się piłki do palety po kolizji

Kody źródłowe z odcinka

package pl.am.swing.gra.etap5;

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

public class MyFrame extends JFrame {

    public MyFrame() {
        setTitle("Gra");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(1000, 800);

        MyComponent myComponent = new MyComponent();
        add(myComponent);
        addKeyListener(new MyKeyListener(myComponent));
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(() -> {
            MyFrame myFrame = new MyFrame();
            myFrame.setVisible(true);
        });

    }
}

package pl.am.swing.gra.etap5;

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

public class MyComponent extends JComponent {

    Ball ball = Ball.getBall();

    public MyComponent() {
        Timer timer = new Timer(40, e -> {
            ball.updatePosition();
            repaint();
        });

        timer.start();
    }

    @Override
    protected void paintComponent(Graphics g) {
        Toolkit.getDefaultToolkit().sync();
        Graphics2D graphics2D = (Graphics2D) g;


        if (Utils.gameOver) {
            graphics2D.setPaint(Color.BLACK);
            graphics2D.setFont(graphics2D.getFont().deriveFont(50.0F));
            graphics2D.drawString("Koniec gry - przegrałeś", 30, 100);
        } else {
            Rectangle limit = new Rectangle(0, 0, Utils.maxWidth, Utils.maxHeight);
            graphics2D.setPaint(Color.CYAN);
            graphics2D.fill(limit);


            graphics2D.setPaint(Color.BLUE);
            graphics2D.fill(ball.getShape());

            graphics2D.setPaint(Color.GRAY);
            graphics2D.fill(Palette.getShape());

            graphics2D.setPaint(Color.BLACK);
            graphics2D.drawString("Ilość żyć: ", Utils.maxWidth, 20);
            graphics2D.setFont(graphics2D.getFont().deriveFont(50.0F));
            graphics2D.drawString(String.valueOf(Utils.livesNumber), Utils.maxWidth, 100);
        }



    }
}

package pl.am.swing.gra.etap5;

import java.awt.*;
import java.awt.geom.Ellipse2D;

public class Ball {
    private int x = 500;
    private int y = 0;
    private int width = 30;
    private int height = 30;
    private int speedX = 5;
    private int speedY = 10;
    private boolean glue = false;
    private static final Ball ball = new Ball();

    private Ball() {
    }

    public static Ball getBall() {
        return ball;
    }

    public void updatePosition() {
        if (!glue) {
            x += speedX;
            y += speedY;

            if (x + width > Utils.maxWidth) {
                x = Utils.maxWidth - width;
                speedX = -speedX;
            }

            if (y + height > Utils.maxHeight) {
                y = Palette.y- height;
                x = Palette.x + Palette.width/2 - width/2;
                Utils.livesNumber--;

                if (Utils.livesNumber == 0) {
                    Utils.gameOver = true;
                }
                glue = true;
            }

            if (x < 0) {
                x = 0;
                speedX = -speedX;
            }

            if (y < 0) {
                y = 0;
                speedY = -speedY;
            }
        }


        if (checkCollision()) {
            glue = true;
            y = Palette.y- height;
        }
    }


    public boolean checkCollision() {
        return x + width > Palette.x && x < Palette.x + Palette.width
                && y + height > Palette.y && y < Palette.y + Palette.height;
    }

    public Shape getShape() {
        return new Ellipse2D.Float(x,y, width, height);
    }

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int getWidth() {
        return width;
    }

    public void setWidth(int width) {
        this.width = width;
    }

    public int getHeight() {
        return height;
    }

    public void setHeight(int height) {
        this.height = height;
    }

    public int getSpeedX() {
        return speedX;
    }

    public void setSpeedX(int speedX) {
        this.speedX = speedX;
    }

    public int getSpeedY() {
        return speedY;
    }

    public void setSpeedY(int speedY) {
        this.speedY = speedY;
    }

    public boolean isGlue() {
        return glue;
    }

    public void setGlue(boolean glue) {
        this.glue = glue;
    }
}

package pl.am.swing.gra.etap5;

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

public class MyKeyListener extends KeyAdapter {

    private MyComponent myComponent;
    private Ball ball = Ball.getBall();

    public MyKeyListener(MyComponent myComponent) {
        this.myComponent = myComponent;
    }

    @Override
    public void keyPressed(KeyEvent e) {
        int keyCode = e.getKeyCode();

        switch (keyCode) {
            case KeyEvent.VK_LEFT -> {
                Palette.x -= 10;
                if (Palette.x < 0) {
                    Palette.x = 0;
                } else {
                    if (ball.isGlue()) {
                        ball.setX(ball.getX() - 10);
                    }
                }
            }
            case KeyEvent.VK_RIGHT -> {
                Palette.x += 10;
                if (Palette.x + Palette.width > Utils.maxWidth) {
                    Palette.x = Utils.maxWidth - Palette.width;
                } else {
                    if (ball.isGlue()) {
                        ball.setX(ball.getX() + 10);
                    }
                }
            }
            case KeyEvent.VK_SPACE -> {
                if (ball.getSpeedY() > 0) {
                    ball.setSpeedY(-ball.getSpeedY());
                }
                ball.setGlue(false);
            }
        }

        myComponent.repaint();
    }

}

package pl.am.swing.gra.etap5;

import java.awt.*;

public class Palette {
    public static int paletteSpace = 50;
    public static int width = 100;
    public static int height = 20;
    public static int x = 500;
    public static int y = Utils.maxHeight - paletteSpace - height;



    public static Shape getShape() {
        return new Rectangle(x, y, width, height);
    }
}

package pl.am.swing.gra.etap5;

public class Utils {
    public static int maxWidth = 800;
    public static int maxHeight = 600;
    public static int livesNumber = 3;
    public static boolean gameOver = false;
}