java贪吃蛇代码_java贪吃蛇游戏实现代码

GUI编程实现贪吃蛇小游戏，供大家参考，具体内容如下

1、编写主方法实现启动类

2、准备好素材图片，编写数据类

3、代码主体部分：在panel面板上实现游戏初始化，键盘和事件的监听等功能

4、代码运行效果图

5、GitHub源码链接

1、编写主方法实现启动类

import javax.swing.*;

//主启动类

public class StartGame {

public static void main(String[] args) {

JFrame jFrame = new JFrame("贪吃蛇小游戏");

jFrame.setBounds(10,10,900,720);

jFrame.setResizable(false); //设置窗口大小不可变

jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

//面板

jFrame.add(new GamePanel());

jFrame.setVisible(true);

}

}

2、准备好素材图片，编写数据类

import javax.swing.*;

import java.net.URL;

public class Data {

//头部图片

public static URL headerURL = Data.class.getResource("statics/header.png");

public static ImageIcon header = new ImageIcon(headerURL);

//头部上下左右

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 ImageIcon up = new ImageIcon(upURL);

public static ImageIcon down = new ImageIcon(downURL);

public static ImageIcon left = new ImageIcon(leftURL);

public static ImageIcon right = new ImageIcon(rightURL);

//身体

public static URL bodyURL = Data.class.getResource("statics/body.png");

public static ImageIcon body = new ImageIcon(bodyURL);

//食物

public static URL foodURL = Data.class.getResource("statics/food.png");

public static ImageIcon food = new ImageIcon(foodURL);

}

3、代码主体部分：在panel面板上实现游戏初始化，键盘和事件的监听等功能

package com.abc.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[600]; //蛇的x坐标 25*25

int[] snakeY = new int[500]; //蛇的y坐标 25*25

String fx;

//食物

int foodx;

int foody;

Random random = new Random();

int score; //游戏分数

//游戏当前的状态

boolean isStart = false;

boolean isFail = false;

//定时器

Timer timer = new Timer(100,this);//100毫秒刷新一次

//构造方法

public GamePanel() {

init();//初始化

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;

//初始化开始的蛇，给蛇定位

snakeX[0] = 100;snakeY[0] = 100;

snakeX[1] = 75;snakeY[1] = 100;

snakeX[2] = 50;snakeY[2] = 100;

fx = "R"; //初始方向向右

//初始化食物数据

foodx = 25 + 25*random.nextInt(34);

foody = 75 + 25*random.nextInt(24);

//初始化游戏分数

score = 0;

}

//绘制面板

@Override

protected void paintComponent(Graphics g) {

super.paintComponent(g);//清屏

this.setBackground(Color.white);//设置面板背景色

Data.header.paintIcon(this,g,25,11);//头部

g.fillRect(25,75,850,600);//默认的黑色游戏区域

//绘制小蛇

if (fx.equals("R")){

Data.right.paintIcon(this,g,snakeX[0],snakeY[0]); //蛇头初始化向右

}else if (fx.equals("L")){

Data.left.paintIcon(this,g,snakeX[0],snakeY[0]); //蛇头初始化向左

}else if (fx.equals("U")){

Data.up.paintIcon(this,g,snakeX[0],snakeY[0]); //蛇头初始化向上

}else if (fx.equals("D")){

Data.down.paintIcon(this,g,snakeX[0],snakeY[0]); //蛇头初始化向下

}

for (int i = 1; i < length; i++) {

Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);

}

//食物

Data.food.paintIcon(this,g,foodx,foody);

//积分

g.setColor(Color.white);

g.setFont(new Font("微软雅黑",Font.BOLD,18));

g.drawString("长度 "+length,750,35);

g.drawString("分数 "+score,750,50);

//游戏状态

if (isStart == false){

g.setColor(Color.white);

g.setFont(new Font("微软雅黑",Font.BOLD,40));//设置字体

g.drawString("按下空格开始游戏",300,300);

}

//失败判断

if (isFail){

g.setColor(Color.red);

g.setFont(new Font("微软雅黑",Font.BOLD,40));//设置字体

g.drawString("游戏失败，按下空格重新开始",300,300);

}

}

//键盘监听事件

@Override

public void keyPressed(KeyEvent e) {

int keyCode = e.getKeyCode(); //获取按键

if (keyCode == KeyEvent.VK_SPACE){

if (isFail){

//重新开始

isFail=false;

init();

}else {

isStart =! isStart;

}

repaint();

}

//键盘控制小蛇移动

if (keyCode==KeyEvent.VK_UP){

fx="U";

}else if (keyCode==KeyEvent.VK_DOWN){

fx="D";

}else if (keyCode==KeyEvent.VK_LEFT){

fx="L";

}else if (keyCode==KeyEvent.VK_RIGHT){

fx="R";

}

}

//事件监听

@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

//移动

for (int i = length-1; i > 0 ; i--) {

snakeX[i] = snakeX[i-1];

snakeY[i] = snakeY[i-1];

}

//走向

if (fx.equals("R")){

snakeX[0] = snakeX[0]+25;

//边界判断

if (snakeX[0]>850){

snakeX[0]=25;

}

}else if (fx.equals("L")){

snakeX[0] = snakeX[0]-25;

if (snakeX[0]<25){

snakeX[0]=850;

}

}else if (fx.equals("U")){

snakeY[0] = snakeY[0]-25;

if (snakeY[0]<75){

snakeY[0]=650;

}

}else if (fx.equals("D")){

snakeY[0] = snakeY[0]+25;

if (snakeY[0]>650){

snakeY[0]=75;

}

}

//吃食物

if (snakeX[0] == foodx && snakeY[0] == foody){

length++;

score = score + 10;

//再次随机食物

foodx = 25 + 25*random.nextInt(34);

foody = 75 + 25*random.nextInt(24);

}

//失败判定,撞到自己

for (int i = 1; i < length; i++) {

if (snakeX[0]==snakeX[i] && snakeY[0]==snakeY[i]){

isFail=true;

}

}

repaint();

}

timer.start();

}

@Override

public void keyTyped(KeyEvent e) {

}

@Override

public void keyReleased(KeyEvent e) {

}

}

4、代码运行效果图

初始化界面：

游戏中界面：

游戏结束界面：

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