本文实例为大家分享了Java实现贪吃蛇游戏源码的具体代码，供大家参考，具体内容如下

1.StartGame

package com.qiang.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.setResizable(false); //窗口大小不可变

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

frame.add(new GamePanel());

frame.setVisible(true);

frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

}

2.Data

package com.qiang.snake;

import javax.swing.*;

import java.net.URL;

//数据中心

public class Data {

public static URL headerURL = Data.class.getResource("/statics/header.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 left = new ImageIcon(leftURL);

public static ImageIcon right = new ImageIcon(rightURL);

public static ImageIcon body = new ImageIcon(bodyURL);

public static ImageIcon food = new ImageIcon(foodURL);

}

3.GamePanel

package com.qiang.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;

public class GamePanel extends JPanel implements KeyListener, ActionListener {

int lenth; //蛇的长度

int[] snakeX = new int[600]; //蛇的坐标x

int[] snakeY = new int[500]; //蛇的坐标y

String fx = "R"; //蛇的方向 ： R:右 L:左 U:上 D:下

boolean isStart = false; //游戏是否开始

Timer timer = new Timer(100, this); //定时器：第一个参数，就是定时执行时间

//食物

int foodx;

int foody;

Random random = new Random();

boolean isFail = false; //游戏是否结束

int score; //游戏分数！

//构造方法

public GamePanel(){

init();//初始化

this.setFocusable(true); //获取焦点事件

this.addKeyListener(this); //键盘监听事件

timer.start();

}

//初始化方法

public void init(){

lenth = 3;//初始小蛇有三节,包括小脑袋

//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;

//初始化食物数据

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

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

score = 0; //初始化游戏分数

}

//画组件

@Override

public void paintComponent(Graphics g){

super.paintComponent(g);//清屏

this.setBackground(Color.WHITE); //设置面板的背景色

Data.header.paintIcon(this,g,25,11); //绘制头部信息区域

g.fillRect(25,75,850,600); //绘制游戏区域

//把小蛇画上去

if (fx.equals("R")){ //蛇的头通过方向变量来判断

Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);

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

Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);

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

Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);

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

Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);

}

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

Data.body.paintIcon(this,g,snakeX[i],snakeY[i]); //蛇的身体长度根据lenth来控制

}

//画食物

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

g.setColor(Color.white);

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

g.drawString("长度 " + lenth,750,35);

g.drawString("分数 " + score,750,50);

//游戏提示

if (isStart==false){

g.setColor(Color.white);

g.setFont(new Font("微软雅黑",Font.BOLD,40));

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));

g.drawString("失败, 按下空格重新开始",200,300);

}

}

@Override

public void keyTyped(KeyEvent e) {

}

//键盘监听事件

@Override

public void keyPressed(KeyEvent e) {

int keyCode = e.getKeyCode(); //获取按下的键盘

if (keyCode==KeyEvent.VK_SPACE){ //如果是空格

if (isFail){ //如果游戏失败,从头再来！

isFail = false;

init(); //重新初始化

}else { //否则，暂停游戏

isStart = !isStart;

}

repaint();

}

//键盘控制走向

if (keyCode==KeyEvent.VK_LEFT){

fx = "L";

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

fx = "R";

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

fx = "U";

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

fx = "D";

}

}

@Override

public void keyReleased(KeyEvent e) {

}

//定时执行的操作

@Override

public void actionPerformed(ActionEvent e) {

//如果游戏处于开始状态，并且没有结束，则小蛇可以移动

if (isStart && isFail==false){

//右移:即让后一个移到前一个的位置即可 !

for (int i = lenth-1; i > 0; i--) { //除了脑袋都往前移：身体移动

snakeX[i] = snakeX[i-1]; //即第i节(后一节)的位置变为(i-1：前一节)节的位置！

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

}

//通过方向控制，头部移动

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

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

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:当蛇的头和食物一样时,算吃到食物!

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

//1.长度加一

lenth++;

//每吃一个食物，增加积分

score = score + 10;

//2.重新生成食物

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

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

}

//结束判断，头和身体撞到了

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

//如果头和身体碰撞，那就说明游戏失败

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

isFail = true;

}

}

repaint(); //需要不断的更新页面实现动画

}

timer.start();//让时间动起来!

}

}

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