How to use Java to realize romantic meteor confession?

Introduction

The functions implemented in this article are:

1. Play music

2. Customize the number of meteors, flight speed, halo size, and meteor size

3. Customized confession words

The knowledge points used are:

GUI: java implements forms and Swing. In fact, the GUI of JAVA Swing is no longer used in enterprises. It is mainly used by some schools and training institutions to teach students to write some games and small projects and practice their skills.

Multi-threading: Let the CPU handle multiple tasks at the same time (this article involves music, text appearing slowly, and meteor lines moving)

Rendering:

Music class (in fact, you can also use music without music, some people don’t like it):

Core code

import javazoom.jl.decoder.JavaLayerException;
import javazoom.jl.player.Player;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
 
public class MusicThread extends Thread{
    @Override
    public void run() {
        //播放音乐
        System.out.println("开始播放");
        //表示音乐文件
        File f = new File("nv.mp3");
        //第三方jar包  Player类
 
        try {
            Player p = new Player(new FileInputStream(f));//参数：文件输入流对象
            // p.play();
        } catch (FileNotFoundException | JavaLayerException e) {
            e.printStackTrace();
        }
 
    }
}

Implementation class:

import javazoom.jl.decoder.JavaLayerException;
import javazoom.jl.player.Player;
 
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.*;
import java.util.Random;
import javax.swing.*;
 
public class MeteorFly extends JFrame {
    int AppletWidth, AppletHeight;
    final int MAX = 6; // (~)流星的个数
    final int SLEEP = 2; // 流星飞行的速度（数值越大，速度越慢）
    final int COLORLV = 1; // (~)色阶（可改变光晕大小）
    final int SIZE = 3 ; // (~)流星大小
    private MyPanel panel;
    public MeteorFly() {
        panel = new MyPanel();
        this.setTitle("LOVE");
        this.getContentPane().add(panel);
        this.setSize(AppletWidth, AppletHeight); // 创建窗体
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);
    }
    public static void main(String[] args) {
        new Thread(){
            @Override
            public void run() {
                //声明一个File对象
                File mp3 = new File("nv.mp3");
                //创建一个输入流
                FileInputStream fileInputStream = null;
 
                try {
                    fileInputStream = new FileInputStream(mp3);
                    //创建一个缓冲流
                    BufferedInputStream bufferedInputStream = new BufferedInputStream(fileInputStream);
                    //创建播放器对象，把文件的缓冲流传入进去
                    Player player = new Player(fileInputStream);
                    //调用播放方法进行播放
                    player.play();
                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                } catch (JavaLayerException e) {
                    e.printStackTrace();
                }
            }
        }.start();
        new MeteorFly();
    }
 
    class MyPanel extends JPanel implements Runnable {
        Meteor p[];
        BufferedImage OffScreen;
        Graphics drawOffScreen;
        Thread pThread;
        Font drawFont = new Font("Arial",0,28);
        public MyPanel() {
            //setBackground(Color.black); //窗体初始化
            AppletWidth = Toolkit.getDefaultToolkit().getScreenSize().width;
            AppletHeight = Toolkit.getDefaultToolkit().getScreenSize().height-200;
            p = new Meteor[MAX];
            for (int i = 0; i < MAX; i++) {
                p[i] = new Meteor();
            }
            OffScreen = new BufferedImage(AppletWidth, AppletHeight,
                    BufferedImage.TYPE_INT_BGR);
            drawOffScreen = OffScreen.getGraphics();
            pThread = new Thread(this);
            pThread.start();
 
            new Thread(){
                @Override
                public void run() {
                    try {
                        sleep(2000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    str1 = "流星雨是世间宝藏，而你是我的人间理想";
                    while(true){
                            try {
                                sleep(150);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                            pos++;
                            if (pos > str1.length() - 1) {
                                pos = str1.length() - 1;
                                break;
                            }
                    }
                }
            }.start();
 
        }
        int pos = 0;
        String str1 = "                                                                   ";
        @Override
        public void paintComponent(Graphics g) {
            super.paintComponents(g);
            g.drawImage(OffScreen, 0, 0, this);
            g.setColor(Color.pink);
            g.setFont(new Font("宋体", Font.BOLD, 50));
            g.drawString(str1.substring(0,pos+1),260,700);
        }
        @Override
         public void run() {
            while (true) {
                for (int i = 0; i < MAX; i++) {
                    drawOffScreen.setColor(p[i].color); // RGB颜色
                    drawOffScreen.fillOval(p[i].x, p[i].y, SIZE, SIZE);
                    p[i].x += p[i].mx;
                    p[i].y += p[i].my;
                    int x = p[i].x;
                    int y = p[i].y;
                    int R = p[i].color.getRed(); // 提取颜色
                    int G = p[i].color.getGreen();
                    int B = p[i].color.getBlue();
                    while (true) {
                        if (R ==0 && G ==0 && B ==0 ) {
                            break;
                        }
                        R -= COLORLV; // 尾部颜色淡化
                        if (R <0 ) {
                            R =0 ;
                        }
                        G -= COLORLV;
                        if (G <0 ) {
                            G =0 ;
                        }
                        B -= COLORLV;
                        if (B < 0) {
                            B =0 ;
                        }
                        Color color = new Color(R, G, B);
                        x -= p[i].mx; // 覆盖尾部
                        y -= p[i].my;
                        drawOffScreen.setColor(color);
                        drawOffScreen.fillOval(x, y, SIZE, SIZE);
                    }
                    if (x > AppletWidth || y > AppletHeight) { // 流星飞出窗口，重置流星
                        p[i].reset();
                    }
                }
                repaint();
                try {
                    Thread.sleep(SLEEP);
                } catch (InterruptedException e) {
                }
            }
        }
    }
    class Meteor { // 流星类
        int x, y; // 流星的位置
        int mx, my; // 下落速度
        Color color; // 流星颜色
        Random r = new Random();
        public Meteor() {
            reset();
        }
        public void reset() {
            int rand = (int) (Math.random() *100 ); //随机生成流星出现位置
            if (rand >35 ) {
                x = (int) (Math.random() *600 );
                y = 0;
            } else {
                y = (int) (Math.random() * 150);
                x =0 ;
            }
            mx = r.nextInt(2)+2; //随机生成下落速度和角度
            my = 1;
            color = new Color(
                        // 随机颜色
                    (new Double(Math.random() *128 )).intValue() +128 ,
                        (new Double(Math.random() *128 )).intValue() +128 ,
                        (new Double(Math.random() * 128)).intValue() + 128);
        }
    }
}

Player here The class needs to import the package by itself. I put the package in this link:

Link Extraction code: v22q

Notes

Some people may have this problem during the package import process Question:

It should actually be open:

How to import the package:

First copy and paste the package into the project package

Then enter: File –> Project Structure

Then click Libraries, Number, Java

#Find the location of the file you want to import, and then keep clicking OK.

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