1 前言
🚀获取源码，文末公众号回复【贪吃蛇】，即可。
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2 正文
2.1 展示
0.5MB GIF可以欣赏：https://tva1.sinaimg.cn/large/007F3CC8ly1h0r3m3o16qg31190osan3.gif
2.2 项目结构
2.2 主要代码
package com.dq.ui; import java.awt.Color; import java.awt.Graphics; import java.awt.Image; import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.util.LinkedList; import java.util.Random; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.Timer; import com.dq.utils.PlayMusicUtil; import com.dq.utils.PropertiesUtils; /** * @author dq * */ public class SnakeFrame extends JFrame{ private static final long serialVersionUID = 8866826595307493727L; private static final int WIDTH = 800; // private static final int HEIGHT = 600; private static final int CELL = 20; private JLabel snakeHeader; private JLabel fruit; private Random random = new Random(); private int dir = 1; private LinkedList<JLabel> bodies = new LinkedList<JLabel>(); private String[] fruits = {"pineapple.png","apple.png","cherry.png","grape.png","orange.png","peach.png","strawberry.png","tomato.png"}; private String[] snakeBody = {"green.png","red.png","yellow.png","purple.png"}; private JLabel highestLabel; private JLabel currentLabel; private int highestScore; private int currentScore; private PropertiesUtils prop = PropertiesUtils.getInstance(); private Timer timer; private boolean status = true; public SnakeFrame(){ ImageIcon icon = new ImageIcon("./src/com/dq/images/snake.jpg"); this.setIconImage(icon.getImage()); this.setTitle("贪吃蛇 DQ制作"); this.setSize(WIDTH+4, HEIGHT+34); this.setLocationRelativeTo(null); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setResizable(false); this.setLayout(null); SnakePanel snakePanel = new SnakePanel(); snakePanel.setBounds(0, 0, WIDTH, HEIGHT); this.add(snakePanel); this.addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); switch (keyCode) { case KeyEvent.VK_LEFT: if(dir != SnakeDirection.RIGHT){ dir = SnakeDirection.LEFT; setBackgrounImage(snakeHeader, "header_l.png"); } break; case KeyEvent.VK_RIGHT: if(dir != SnakeDirection.LEFT){ dir = SnakeDirection.RIGHT; setBackgrounImage(snakeHeader, "header_r.png"); } break; case KeyEvent.VK_UP: if(dir != SnakeDirection.BOTTOM){ dir = SnakeDirection.TOP; setBackgrounImage(snakeHeader, "header_t.png"); } break; case KeyEvent.VK_DOWN: if(dir != SnakeDirection.TOP){ dir = SnakeDirection.BOTTOM; setBackgrounImage(snakeHeader, "header_b.png"); } break; case KeyEvent.VK_SPACE: // if(status){ // status = !status; // }else{ // status = !status; // timer.notify(); // } } } }); this.setVisible(true); PlayMusicUtil.playBGM(); new Timer(98000, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { PlayMusicUtil.playBGM(); } }).start(); } private void setBackgrounImage(JLabel label,String fileName){ ImageIcon icon = new ImageIcon("./src/com/dq/images/"+fileName); icon.setImage( icon.getImage(). getScaledInstance(label.getWidth(),label.getHeight(),Image.SCALE_DEFAULT)); label.setIcon(icon); } class SnakePanel extends JPanel{ private static final long serialVersionUID = 1L; public SnakePanel(){ init(); } private void init() { this.setSize(SnakeFrame.WIDTH, SnakeFrame.HEIGHT); this.setLayout(null); highestLabel = new JLabel(); highestScore = Integer.parseInt(prop.getProperty("highest")); highestLabel.setText("历史最高分"+highestScore); highestLabel.setBounds(20, 20, 300, 30); this.add(highestLabel); currentLabel = new JLabel("当前得分"+currentScore); currentLabel.setBounds(20, 60, 300, 30); this.add(currentLabel); createHeader(); new Thread(new Runnable() { @Override public void run() { createFruit(); } }).start(); timer = new Timer(250, new ActionListener() { @Override public void actionPerformed(ActionEvent e) { Point oldPoint = snakeHeader.getLocation(); Point newPoint = null; switch (dir) { case SnakeDirection.RIGHT: //鍚戝彸 newPoint = new Point(oldPoint.x+CELL, oldPoint.y); break; case SnakeDirection.LEFT: //鍚戝乏 newPoint = new Point(oldPoint.x-CELL, oldPoint.y); break; case SnakeDirection.BOTTOM: //鍚戜笅 newPoint = new Point(oldPoint.x, oldPoint.y+CELL); break; case SnakeDirection.TOP: //鍚戜笂 newPoint = new Point(oldPoint.x, oldPoint.y-CELL); break; } snakeHeader.setLocation(newPoint); isHeatWall(); if(snakeHeader.getLocation().equals( fruit.getLocation())){ eatBean(); } move(oldPoint); } }); timer.start(); } private void move(Point oldPoint) { Point p = new Point(); for(int i=1;i<bodies.size();i++){ p = bodies.get(i).getLocation(); bodies.get(i).setLocation(oldPoint); oldPoint = p; } } private void eatBean() { int index = random.nextInt( snakeBody.length); setBackgrounImage(fruit, snakeBody[index]); bodies.add(fruit); new Thread(new Runnable() { @Override public void run() { PlayMusicUtil.playEatBean(); } }).start(); currentScore++; currentLabel.setText("褰撳墠寰楀垎锛�"+currentScore); // new Thread( new Runnable() { // // @Override // public void run() { // // createFruit(); // } // }).start(); new Thread( ()->{createFruit();}).start(); } private void isHeatWall() { int x = snakeHeader.getLocation().x; int y = snakeHeader.getLocation().y; if(x <0 || x >780 || y<0 || y>580){ new Thread( new Runnable() { @Override public void run() { PlayMusicUtil.stopBGM(); PlayMusicUtil.playGameOver(); } }).start(); int op = -1; if(currentScore > highestScore){ op = JOptionPane.showConfirmDialog(null, "鍝﹁眮锛佺牬绾綍浜嗗摝锛佸啀鏉ヤ竴鎶婏紵"); prop.setProperty("highest", currentScore+""); try { FileWriter writer = new FileWriter(new File("./src/score.properties")); prop.store(writer, null); } catch (IOException e) { e.printStackTrace(); } }else{ op = JOptionPane.showConfirmDialog(null, "你死了"); } //鍒ゆ柇鏄惁鍐嶆潵涓�鎶� if(op == 0){ reStart(); }else{ System.exit(0); } } } private void createFruit() { fruit = new JLabel(); fruit.setSize(CELL, CELL); int index = random.nextInt( fruits.length); setBackgrounImage(fruit, fruits[index]); Point p = randomPoint(SnakeFrame.WIDTH/CELL, SnakeFrame.HEIGHT/CELL); System.out.println("x:"+p.x+" y:"+p.y); fruit.setLocation(p); this.add(fruit); this.repaint(); } private void createHeader() { snakeHeader = new JLabel(); snakeHeader.setSize(CELL, CELL); // snakeHeader.setOpaque(false); setBackgrounImage(snakeHeader, "header_r.png"); Point p = randomPoint((SnakeFrame.WIDTH/CELL)/2, (SnakeFrame.HEIGHT/CELL)/2); p.x = p.x+10*CELL; p.y = p.y+10*CELL; snakeHeader.setLocation(p); bodies.add(snakeHeader); this.add(snakeHeader); } private Point randomPoint(int xScale,int yScale){ Point point = new Point(); int x = random.nextInt(xScale)*CELL; int y = random.nextInt(yScale)*CELL; point.setLocation(x, y); return point; } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); ImageIcon icon = new ImageIcon("./src/com/dq/images/bg.png"); g.drawImage(icon.getImage(), 0, 0, SnakeFrame.WIDTH, SnakeFrame.HEIGHT, null); g.setColor(Color.RED); for(int i=1;i<HEIGHT/CELL;i++){ g.drawLine(0, i*CELL, 800, i*CELL); } for(int i=1;i<WIDTH/CELL; i++){ g.drawLine(i*CELL, 0, i*CELL, 600); } } public void reStart() { if(currentScore > highestScore){ highestScore = currentScore; highestLabel.setText("最高分"+highestScore); } currentScore = 0; currentLabel.setText("当前得分"+currentScore); dir = 1; this.remove(fruit); for(JLabel body : bodies){ this.remove(body); } bodies.clear(); createHeader(); createFruit(); PlayMusicUtil.playBGM(); super.repaint(); } } }
2.4 按钮相关类
package com.dq.ui; /** * 存储蛇运动方向的接口 * @author dq * */ public interface SnakeDirection { int LEFT = -1; int RIGHT = 1; int BOTTOM = -2; int TOP = 2; }
2.5 启动类
package com.dq.ui; public class StartGame { public static void main(String[] args) { new SnakeFrame(); } }
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