贪吃蛇
这里是Java写的自制贪吃蛇小游戏，运用GUI编程，请大家参考。
师承kuang神，并非全原创。
GamePanel类：
package snake;
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;
import java.util.Random;
//游戏的面板
public class GamePanel extends JPanel implements KeyListener , ActionListener {
//定义蛇的数据结构
int length;//蛇的长度
int[] snakeX = new int[500];//蛇的x坐标 25*25
int[] snakeY = new int[500];//蛇的y坐标 25*25
String direction;//初始方向向右
//食物的坐标
int foodx;
int foody;
Random random = new Random();
int score;//成绩
//游戏当前的状态： 开始 停止
boolean isStart = false;//默认不开始
boolean isFail = false;//游戏失败状态
//定时器 以毫秒为单位 1000ms = 1s
Timer timer = new Timer(100,this);//100毫秒执行一次！
//构造器
public GamePanel() {
init();
//获得焦点和键盘事件
this.setFocusable(true);//获得焦点事件
this.addKeyListener(this);//获得键盘监听事件
timer.start();//游戏一开始，定时器就启动
}
//初始化方法
public void init(){
length = 3;
snakeX[0] = 100;snakeY[0] = 100;//脑袋的坐标
snakeX[1] = 75;snakeY[1] = 100;//第一个身体的坐标
snakeX[2] = 50;snakeY[2] = 100;//第二个身体的坐标
direction = "R";
//把食物随机分布在界面上
foodx = 25 + 25*random.nextInt(34);
foody = 75 + 25*random.nextInt(24);
score = 0;
}
//绘制面板，游戏中所有东西都使用这个画笔来画
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);//清屏
//绘制静态的面板
this.setBackground(Color.WHITE);
Data.header.paintIcon(this,g,25,11);
g.fillRect(25,75,850,600);//默认的游戏界面
//画积分
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,16));//设置字体
g.drawString("长度"+length,800,35);
g.drawString("分数"+score,800,50);
//画食物
Data.food.paintIcon(this,g,foodx,foody);
//把小蛇画上去
if(direction.equals("R")){
Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if(direction.equals("L")){
Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if(direction.equals("U")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if(direction.equals("D")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);
}
for (int i = 1; i < length; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);//蛇的长度根据length来控制
}
//游戏状态
if(isStart==false){
g.setColor(Color.BLUE);
g.setFont(new Font("arial",Font.BOLD,40));//设置字体
g.drawString("Press Space!Your show time!",200,300);
}
if(isFail){
g.setColor(Color.RED);
g.setFont(new Font("arial",Font.BOLD,60));//设置字体
g.drawString("Game Over!",300,300);
g.setColor(Color.WHITE);
g.setFont(new Font("arial",Font.BOLD,60));//
g.drawString("Press Space to Restart!",175,400);
}
}
//键盘监听事件
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if(keyCode == KeyEvent.VK_SPACE){
if(isFail){
//重新开始
isFail = false;
init();
}else{
isStart = !isStart;//取反
}
repaint();
}
//小蛇移动
if(keyCode==KeyEvent.VK_UP){
if(direction.equals("D") == false){
direction = "U";//实现功能，小蛇移动时不可以强行反方向移动
}
}else if(keyCode==KeyEvent.VK_DOWN){
if(direction.equals("U") == false){
direction = "D";
}
}else if(keyCode==KeyEvent.VK_LEFT){
if(direction.equals("R") == false){
direction = "L";
}
}else if(keyCode==KeyEvent.VK_RIGHT){
if(direction.equals("L") == false){
direction = "R";
}
}
}
//事件监听--需要通过固定事件来刷新，1s=10次
@Override
public void actionPerformed(ActionEvent e) {
if(isStart&& isFail == false) {//如果游戏是开始状态，就让小蛇动起来！
//吃食物
if(snakeX[0] == foodx&&snakeY[0]==foody){
//长度加一
length++;
//分数加十
score = score + 10;
//再次随机食物
foodx = 25 + 25*random.nextInt(34);
foody = 75 + 25*random.nextInt(24);
}
//移动
for (int i = length - 1; i > 0; i--) {//后一节移动到前一节的位置
snakeX[i] = snakeX[i - 1];
snakeY[i] = snakeY[i - 1];
}
//走向
if (direction.equals("R")) {
snakeX[0] = snakeX[0] + 25;
if (snakeX[0] > 850) {
// snakeX[0] = 25; //蛇头超出边界则从另一边出来
isFail = true;}//贪吃蛇撞墙，游戏失败
} else if (direction.equals("L")) {
snakeX[0] = snakeX[0] - 25;
if (snakeX[0] < 25) {
// snakeX[0] = 850;
isFail = true;}
} else if (direction.equals("U")) {
snakeY[0] = snakeY[0] - 25;
if (snakeY[0] < 75) {
// snakeY[0] = 650;
isFail = true;}
} else if (direction.equals("D")) {
snakeY[0] = snakeY[0] + 25;
if (snakeY[0] > 650) {
// snakeY[0] = 75;
isFail = true;}
}
//失败判定，撞到自己就算失败
for (int i = 1; i < length; i++) {
if(snakeX[0]==snakeX[i]&&snakeY[0]==snakeY[i]){
isFail = true;
}
}
repaint(); }
timer.start();//定时器开启
}
@Override
public void keyReleased (KeyEvent e){
}
@Override
public void keyTyped (KeyEvent e){
}
}
Data类
package snake;
import javax.swing.*;
import java.net.URL;
//数据中心
public class Data {
//相对路径 xx.jpg
//绝对路径 / 相当于当前项目
public static URL headerURL = Data.class.getResource("/statics/header2.png");
public static URL upURL = Data.class.getResource("/statics/up.png");
public static URL downURL = Data.class.getResource("/statics/down.png");
public static URL leftURL = Data.class.getResource("/statics/left.png");
public static URL rightURL = Data.class.getResource("/statics/right.png");
public static URL bodyURL = Data.class.getResource("/statics/body.png");
public static URL foodURL = Data.class.getResource("/statics/food.png");
public static ImageIcon header = new ImageIcon(headerURL);
public static ImageIcon up = new ImageIcon(upURL);
public static ImageIcon down = new ImageIcon(downURL);
public static ImageIcon right = new ImageIcon(rightURL);
public static ImageIcon left = new ImageIcon(leftURL);
public static ImageIcon body = new ImageIcon(bodyURL);
public static ImageIcon food = new ImageIcon(foodURL);
}
GameStart类：
package snake;
import javax.swing.*;
//游戏的主启动类
public class StartGame {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setBounds(10,10,900,720);
frame.setResizable(false);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setVisible(true);
//正常游戏界面都应该在面板上
frame.add(new GamePanel());
}
}
这里是基本图片，Logo图片可以自行设计。