java通过GUI实现贪吃蛇游戏
java 通过GUI编程实现贪吃蛇游戏
1、Home的java文件
1.1、首先建立一个Home.java文件，主要用于建立一个面板，将面板放入frame中，对面板进行一些初始化操作
1.2、代码：
import javax.swing.*;
public class Home {
public static void main(String[] args) {
JFrame frame = new JFrame("贪吃蛇游戏");
GamePanel panel = new GamePanel();
frame.add(panel);
frame.setResizable(false); //窗口大小不可改变
frame.setBounds(10,10,900,720);
frame.setVisible(true);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
}
2、Data的java文件
2.1、接着创建一个Data.java文件，该文件下主要是指定图片的引用地址，将图片转化为图标。
2.2、代码：
import javax.swing.*;
import java.net.URL;
public class Data {
//获取图片路径
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");
//将图片转为图标
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的java文件
3.1、该文件下主要是贪吃蛇的实现流程，如键盘事件的监听，通过对键盘的监听，获取用户的键盘输入，从而实现贪吃蛇的上下左右移动等等。
3.2、代码：
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 length; //蛇的长度
int[] snakeX = new int[600];
int[] snakeY = new int[500];
String fx;
boolean isStart = false;
int foodX;
int foodY;
//失败
boolean isFalse = false;
int score;
//生成随机数
Random random = new Random();
//定时器
Timer timer = new Timer(100,this);
//构造器
public GamePanel() {
init();
//获取聚焦
this.setFocusable(true);
//添加键盘监听
this.addKeyListener(this);
timer.start();
}
//初始化
public void init(){
length = 3;
snakeX[0] = 100;
snakeY[0] = 100;
snakeX[1] = 75;
snakeY[1] = 100;
snakeX[2] = 50;
snakeY[2] = 100;
fx = "right";
foodX = 25+25*random.nextInt(34);
foodY = 75+25*random.nextInt(24);
score = 0;
}
//画图
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g); //清屏 --如果删除这行代码，程序虽然可以运行，但会闪烁
this.setBackground(Color.white);
Data.header.paintIcon(this,g,25,11);
g.fillRect(25,75,850,600); //默认的游戏界面
//将长度和分数画上去
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,15)); //字体样式微软雅黑，加粗，30号大小
g.drawString("长度"+length,750,35);
g.drawString("得分"+score,750,55);
//将食物图标放到画板上
Data.food.paintIcon(this,g,foodX,foodY);
//将头放到画板上
if(fx.equals("up")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("down")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("left")){
Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("right")){
Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);
}
//将身体图片放到画板上
for (int i = 1; i < length; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);
}
if(isStart == false){
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,30)); //字体样式微软雅黑，加粗，30号大小
g.drawString("按下空格开始游戏",300,300);
}
if(isFalse == true){
g.setColor(Color.red);
g.setFont(new Font("微软雅黑",Font.BOLD,30)); //字体样式微软雅黑，加粗，30号大小
g.drawString("游戏失败，按空格键重新开始",300,300);
}
}
//键盘监听
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();
if(keyCode == KeyEvent.VK_SPACE){
if (isFalse){
//重新开始
isFalse = false;
init();
}else{
isStart = !isStart;
}
//重新绘制
repaint();
}
if(keyCode == KeyEvent.VK_UP){
fx = "up";
}
if(keyCode == KeyEvent.VK_DOWN){
fx = "down";
}
if(keyCode == KeyEvent.VK_LEFT){
fx = "left";
}
if(keyCode == KeyEvent.VK_RIGHT){
fx = "right";
}
}
//事件监听
@Override
public void actionPerformed(ActionEvent e) {
if(isStart && isFalse == false){
//吃食物
if(snakeX[0] == foodX && snakeY[0] == foodY){
length++;
score = score + 10;
//吃到后重新生成
foodX = 25+25*random.nextInt(34);
foodY = 75+25*random.nextInt(24);
}
//判断移动方向
if (fx == "up"){
//身体上移
for (int i = length-1; i > 0; i--) {
snakeX[i] = snakeX[i-1];
snakeY[i] = snakeY[i-1];
}
//头部上移
snakeY[0] = snakeY[0]-25;
//当蛇走到最上边则从最下边出来
if(snakeY[0] < 75){
snakeY[0] = 650;
}
}else if (fx == "down"){
//身体下移
for (int i = length-1; i > 0; i--) {
snakeX[i] = snakeX[i-1];
snakeY[i] = snakeY[i-1];
}
//头部下移
snakeY[0] = snakeY[0]+25;
//当蛇走到最下边则从最上边出来
if(snakeY[0] > 650){
snakeY[0] = 75;
}
}else if (fx == "left"){
//身体左移
for (int i = length-1; i > 0; i--) {
snakeX[i] = snakeX[i-1];
snakeY[i] = snakeY[i-1];
}
//头部左移
snakeX[0] = snakeX[0]-25;
//当蛇走到最左边则从最右边出来
if(snakeX[0] < 25){
snakeX[0] = 850;
}
}else if (fx == "right"){
//身体右移
for (int i = length-1; i > 0; i--) {
snakeX[i] = snakeX[i-1];
snakeY[i] = snakeY[i-1];
}
//头部右移
snakeX[0] = snakeX[0]+25;
//当蛇走到最右边则从最左边出来
if(snakeX[0] > 850){
snakeX[0] = 25;
}
}
//判断是否撞到身体
for (int i = 1; i < length; i++) {
if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]){
isFalse = true;
}
}
//重画
repaint();
timer.start();
}
}
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyReleased(KeyEvent e) {
}
}
4、贪吃蛇的图标以及实现功能的全部代码
4.1、百度网盘获取链接：链接：https://pan.baidu.com/s/1tSK3MUDpIYIF8hXhFDbKRQ
提取码：t8e9