PinBall击球游戏

package com.shrimpking.t9;


import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;

/**
 * Created by IntelliJ IDEA.
 *
 * @Author : Shrimpking
 * @create 2024/11/13 20:39
 */
public class PinBall extends JFrame implements KeyListener
{
    private BallCanvas canvas; //面板
    private Timer timer; // 定时器
    private boolean isOver = false; //游戏是否结束
    private static final int TABLE_WIDTH = 350; //屏幕宽度
    private static final int TABLE_HEIGHT = 500; //屏幕高度
    private static final int BALL_SIZE = 18; // 球的尺寸
    private static final int RECKET_WIDTH = 100; // 球拍宽度
    private static final int RECKET_HEIGHT = 20; //球拍厚度
    private int ballX = 120; //球的坐标
    private int ballY = 30; //
    private int speedX = 5; // 加速度
    private int speedY = 10; //
    private int recketX = 120; // 球拍的坐标
    private int recketY = 400;  //
    private int score = 0;

    public PinBall(){
        this.setTitle("击球游戏");
        this.setSize(TABLE_WIDTH, TABLE_HEIGHT); //窗体尺寸
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //窗体关闭事件

        canvas = new BallCanvas();
        canvas.setPreferredSize(new Dimension(TABLE_WIDTH, TABLE_HEIGHT)); //面板尺寸
        canvas.addKeyListener(this); //键盘事件
        this.getContentPane().add(canvas);

        ActionListener task = new ActionListener()
        {
            @Override
            public void actionPerformed(ActionEvent e)
            {

                //根据边界，修正加速度
                if (ballX <= 0 || ballX >= (TABLE_WIDTH - BALL_SIZE - speedX)){
                    //如果球的x坐标，小于左边界，或大于右边界时，速度转向
                    speedX = -speedX;
                }
                if (ballY <= 0 || (ballY >= recketY - BALL_SIZE - speedY && ballX > recketX && ballX < recketX + RECKET_WIDTH)){
                    //如果球的y坐标，小于顶边界，大于球拍的y坐标的边界，速度转向
                    if (ballY >= recketY - BALL_SIZE - speedY){
                        score += 100;
                    }
                    speedY = -speedY;
                }

                if (ballY > recketY - BALL_SIZE && (ballX < recketX || ballX > recketX + RECKET_WIDTH)){
                    //如果球的y坐标，超出球拍的边界，停止游戏
                    timer.stop(); //停止计时，球静止了
                    isOver = true; //游戏结束
                    canvas.repaint(); //面板重绘
                }

                ballX += speedX; //球运动
                ballY += speedY; //
                canvas.repaint();
            }
        };

        timer = new Timer(100,task); //计时器

        this.addKeyListener(this); //窗体键盘事件
        this.setResizable(false); //不可伸缩
        this.setLocationRelativeTo(null); //居中显示
        this.setVisible(true); //可见
        timer.start(); //计时器开启
    }

    public static void main(String[] args)
    {
        PinBall w = new PinBall();
    }

    @Override
    public void keyTyped(KeyEvent e)
    {

    }

    @Override
    public void keyPressed(KeyEvent e)
    {
        if (e.getKeyCode() == KeyEvent.VK_LEFT){
            if (recketX > 0){
                //方向键，左，
                recketX -= 11;
                canvas.repaint();
            }
        }else if(e.getKeyCode() == KeyEvent.VK_RIGHT){
            if (recketX < (TABLE_WIDTH - RECKET_WIDTH)){
                //方向键，右
                recketX += 11;
                canvas.repaint();
            }
        }else if (e.getKeyCode() == KeyEvent.VK_ENTER){
            //方向键，回车
            if (isOver){
                //如果游戏结束了，回车开启新游戏
                isOver = false; //
                score = 0; //成绩
                ballX = (int) (Math.random() * TABLE_WIDTH); //随机，球坐标
                ballY = 30; //
                canvas.repaint(); //重绘
                timer.start(); //计时器开启
            }
        }
    }

    @Override
    public void keyReleased(KeyEvent e)
    {

    }

    private class BallCanvas extends JPanel{
        @Override
        public void paint(Graphics g)
        {
            super.paint(g);
            if (isOver){
                //游戏结束
                g.setColor(Color.BLUE);
                g.setFont(new Font("宋体",Font.PLAIN,40));
                g.drawString("游戏结束!",70,220);
            }else {
                //游戏进行中
                g.setColor(Color.RED);
                g.fillOval(ballX,ballY,BALL_SIZE,BALL_SIZE);  //球

                g.setColor(Color.PINK);
                g.fillRect(recketX,recketY,RECKET_WIDTH,RECKET_HEIGHT); //球拍

                g.setColor(Color.BLACK);
                g.setFont(new Font("黑体",Font.PLAIN,18));
                g.drawString("得分：" + score, 10,20); //得分

            }
        }
    }

}