分享一款基于Java开发的经典贪吃蛇游戏实现

9 创建了GameFrame和GamePanel两个类

Frame设定了title、关闭按钮、 窗体是否可以自由改变大小、构造数据模型允许paint。

Panel 设定了蛇和苹果&＃xff0c;设定了延迟175&＃xff0c;蛇和苹果位置用数组实现

package dd;import javax.swing.*;/*** &＃64;author 郑道炫* &＃64;version 1.0*/
public class GameFrame extends JFrame {GameFrame(){GamePanel gamePanel &＃61; new GamePanel();this.add(gamePanel);this.setTitle("snake");this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);this.setResizable(false);this.pack();this.setVisible(true);this.setLocationRelativeTo(null);}
}


package dd;import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;
/*** &＃64;author 郑道炫* &＃64;version 1.0*/public class GamePanel extends JPanel implements ActionListener {static final int SCREEN_WIDTH &＃61; 800;static final int SCREEN_HEIGHT &＃61; 700;static final int UNIT_SIZE &＃61; 35;static final int GAME_UNITS &＃61; (SCREEN_WIDTH * SCREEN_HEIGHT) / (UNIT_SIZE*UNIT_SIZE);static final int DELAY &＃61; 175;final int x[] &＃61; new int[GAME_UNITS];final int y[] &＃61; new int[GAME_UNITS];int bodyParts &＃61; 3;int applesEaten;int appleX;int appleY;char direction &＃61; &＃39;R&＃39;;boolean running &＃61; false;Timer timer;Random randoms;GamePanel() {randoms &＃61; new Random();this.setPreferredSize(new Dimension(SCREEN_WIDTH,SCREEN_HEIGHT));this.setBackground(Color.black);this.setFocusable(true);this.addKeyListener(new MyKeyAdapter());startGame();}public void startGame() {newApple();running &＃61; true;timer &＃61; new Timer(DELAY, this);timer.start();}public void paintComponent(Graphics g) {super.paintComponent(g);draw(g);}public void draw(Graphics g) {if (running) {
// for (int i &＃61; 0; i // g.drawLine(i * UNIT_SIZE, 0, i * UNIT_SIZE, SCREEN_HEIGHT);
// g.drawLine(0, i * UNIT_SIZE, SCREEN_WIDTH, i * UNIT_SIZE);
// }//用完表格取消g.setColor(Color.red);g.fillOval(appleX, appleY, UNIT_SIZE, UNIT_SIZE);for (int i &＃61; 0; i 0&&appleX/UNIT_SIZE 0&&appleY/UNIT_SIZE 0; i--) {x[i] &＃61; x[i - 1];y[i] &＃61; y[i - 1];}switch (direction) {case &＃39;U&＃39;:y[0] &＃61; y[0] - UNIT_SIZE;break;case &＃39;D&＃39;:y[0] &＃61; y[0] &＃43; UNIT_SIZE;break;case &＃39;L&＃39;:x[0] &＃61; x[0] - UNIT_SIZE;break;case &＃39;R&＃39;:x[0] &＃61; x[0] &＃43; UNIT_SIZE;break;}}public void checkApple() {if ((x[0] &＃61;&＃61; appleX) && (y[0] &＃61;&＃61; appleY)) {bodyParts&＃43;&＃43;;applesEaten&＃43;&＃43;;newApple();}}public void checkCollisions() {//头撞到身体for (int i &＃61; bodyParts; i > 0; i--) {if ((x[0] &＃61;&＃61; x[i]) && (y[0] &＃61;&＃61; y[i])) {running &＃61; false;}}//头碰到左边的框框if (x[0] <0) {running &＃61; false;}//头撞到右边if (x[0] > SCREEN_WIDTH) {running &＃61; false;}//头碰到上边的框框if (y[0]<0){running &＃61;false;}//头撞到下面的框框if (y[0] > SCREEN_HEIGHT) {running &＃61; false;}if (!running) {timer.stop();}}public void gameOver(Graphics g) {//Game Over textg.setColor(Color.RED);g.setFont(new Font("Ink Free", Font.BOLD, 45));FontMetrics metrics1 &＃61; getFontMetrics(g.getFont());g.drawString("Score: " &＃43; applesEaten,(SCREEN_WIDTH - metrics1.stringWidth("Score:" &＃43; applesEaten)) / 2,g.getFont().getSize());g.setFont(new Font("Ink Free", Font.BOLD, 75));FontMetrics metrics2 &＃61; getFontMetrics(g.getFont());g.drawString("gameOver ",(SCREEN_WIDTH - metrics2.stringWidth("GameOver"))/2,SCREEN_HEIGHT/2);}&＃64;Overridepublic void actionPerformed(ActionEvent e) {//TODO Auto-generated method stubif (running) {move();checkApple();checkCollisions();}repaint();}public class MyKeyAdapter extends KeyAdapter {&＃64;Overridepublic void keyPressed(KeyEvent e) {switch (e.getKeyCode()) {case KeyEvent.VK_A:if (direction !&＃61; &＃39;R&＃39;) {direction &＃61; &＃39;L&＃39;;}break;case KeyEvent.VK_D:if (direction !&＃61; &＃39;L&＃39;) {direction &＃61; &＃39;R&＃39;;}break;case KeyEvent.VK_W:if (direction !&＃61; &＃39;D&＃39;) {direction &＃61; &＃39;U&＃39;;}break;case KeyEvent.VK_S:if (direction !&＃61; &＃39;U&＃39;) {direction &＃61; &＃39;D&＃39;;}break;}}}
}

package dd;/*** &＃64;author 郑道炫* &＃64;version 1.0*/
public class snakebord {public static void main(String[] args) {//TODO Auto-generated method subGameFrame frame &＃61; new GameFrame();}
}


效果

 但是有一个技术问题吃到4个或者5个苹果后&＃xff0c;苹果消失&＃xff0c;在屏幕找不到&＃xff0c;考虑是因为苹果座位表超出了整体frame。