用Java做一个篮子接星星小游戏

很高兴回答您的问题。下面是用Java实现篮子接星星小游戏的步骤：

1.创建一个窗口并设置窗口大小和标题。

import javax.swing.JFrame;

public class Game extends JFrame {
    public Game() {
        setTitle("Basket Catch Game");
        setSize(600, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setVisible(true);
    }

    public static void main(String[] args) {
        new Game();
    }
}

2.在窗口中添加一个篮子和星星。

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Game extends JFrame {
    private Basket basket;
    private Star star;

    public Game() {
        setTitle("Basket Catch Game");
        setSize(600, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setVisible(true);

        basket = new Basket();
        star = new Star();

        addKeyListener(new KeyListener() {
            @Override
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_LEFT) {
                    basket.moveLeft();
                } else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
                    basket.moveRight();
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
            }

            @Override
            public void keyTyped(KeyEvent e) {
            }
        });

        JPanel panel = new JPanel() {
            @Override
            public void paintComponent(Graphics g) {
                super.paintComponent(g);
                g.setColor(Color.BLUE);
                g.fillRect(basket.getX(), basket.getY(), basket.getWidth(), basket.getHeight());
                g.setColor(Color.YELLOW);
                g.fillOval(star.getX(), star.getY(), star.getSize(), star.getSize());
            }
        };
        add(panel);
        panel.requestFocus();
    }

    public static void main(String[] args) {
        new Game();
    }
}

class Basket {
    private int x;
    private int y;
    private int width;
    private int height;

    public Basket() {
        x = 250;
        y = 500;
        width = 100;
        height = 50;
    }

    public void moveLeft() {
        if (x > 0) {
            x -= 10;
        }
    }

    public void moveRight() {
        if (x < 500) {
            x += 10;
        }
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public int getWidth() {
        return width;
    }

    public int getHeight() {
        return height;
    }
}

class Star {
    private int x;
    private int y;
    private int size;

    public Star() {
        x = (int) (Math.random() * 500);
        y = 0;
        size = 50;
    }

    public void fall() {
        y += 10;
        if (y > 550) {
            x = (int) (Math.random() * 500);
            y = 0;
        }
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public int getSize() {
        return size;
    }
}

3.让星星不断下落并判断篮子是否接住了星星。

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class Game extends JFrame {
    private Basket basket;
    private Star star;

    public Game() {
        setTitle("Basket Catch Game");
        setSize(600, 600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);
        setVisible(true);

        basket = new Basket();
        star = new Star();

        addKeyListener(new KeyListener() {
            @Override
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_LEFT) {
                    basket.moveLeft();
                } else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
                    basket.moveRight();
                }
            }

            @Override
            public void keyReleased(KeyEvent e) {
            }

            @Override
            public void keyTyped(KeyEvent e) {
            }
        });

        JPanel panel = new JPanel() {
            @Override
            public void paintComponent(Graphics g) {
                super.paintComponent(g);
                g.setColor(Color.BLUE);
                g.fillRect(basket.getX(), basket.getY(), basket.getWidth(), basket.getHeight());
                g.setColor(Color.YELLOW);
                g.fillOval(star.getX(), star.getY(), star.getSize(), star.getSize());
            }
        };
        add(panel);
        panel.requestFocus();

        new Thread(new Runnable() {
            @Override
            public void run() {
                while (true) {
                    star.fall();
                    panel.repaint();
                    if (basket.catchStar(star)) {
                        star = new Star();
                    }
                    try {
                        Thread.sleep(50);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();
    }

    public static void main(String[] args) {
        new Game();
    }
}

class Basket {
    private int x;
    private int y;
    private int width;
    private int height;

    public Basket() {
        x = 250;
        y = 500;
        width = 100;
        height = 50;
    }

    public void moveLeft() {
        if (x > 0) {
            x -= 10;
        }
    }

    public void moveRight() {
        if (x < 500) {
            x += 10;
        }
    }

    public boolean catchStar(Star star) {
        if (star.getY() + star.getSize() > y && star.getY() + star.getSize() < y + height
                && star.getX() > x && star.getX() < x + width) {
            return true;
        }
        return false;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public int getWidth() {
        return width;
    }

    public int getHeight() {
        return height;
    }
}

class Star {
    private int x;
    private int y;
    private int size;

    public Star() {
        x = (int) (Math.random() * 500);
        y = 0;
        size = 50;
    }

    public void fall() {
        y += 10;
        if (y > 550) {
            x = (int) (Math.random() * 500);
            y = 0;
        }
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public int getSize() {
        return size;
    }
}