用于创建出一个静态的窗体，然后启动游戏
package com.Snake;
import javax.swing.*;
public class StartGame {
public static void main(String[] args) {
Jframe frame = new Jframe();
frame.setLocation(0,0);
frame.setSize(900,620);
frame.setResizable(false);
frame.add(new GamePanel());
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
frame.setVisible(true);
}
}
3.2 Data类
用于存放调用的图片
package com.Snake;
import javax.swing.*;
import java.net.URL;
public class Data {
public static URL headerURL=Data.class.getResource("/com/Snake/statics/header.jpg");
public static URL bodyURL=Data.class.getResource("/com/Snake/statics/body.jpg");
public static URL foodURL=Data.class.getResource("/com/Snake/statics/food.jpg");
public static URL upURL=Data.class.getResource("/com/Snake/statics/up.jpg");
public static URL downURL=Data.class.getResource("/com/Snake/statics/down.jpg");
public static URL leftURL=Data.class.getResource("/com/Snake/statics/left.jpg");
public static URL rightURL=Data.class.getResource("/com/Snake/statics/right.jpg");
public static ImageIcon header=new ImageIcon(headerURL);
public static ImageIcon body=new ImageIcon(bodyURL);
public static ImageIcon food=new ImageIcon(foodURL);
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);
}
3.3 GamePanel类
用于实现各种操作
package com.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 {
//定义蛇的数据结构
private int lenght;//蛇的长度
private int[] snakeX=new int[1000];//蛇的x坐标
private int[] snakeY=new int[1000];//蛇的y坐标
String fx;
//食物坐标
int foodx;
int foody;
Random random=new Random();
int score;//分数
boolean isStart=false;//游戏状态默认为没开始
boolean isFail=false;//游戏失败状态
Timer timer=new Timer(100,this);//定时器
//构造器
public GamePanel() {
init();
//获得焦点和键盘监听事件
this.setFocusable(true);//获得焦点
this.addKeyListener(this);
timer.start();
}
//初始化方法
public void init(){
lenght=3;
snakeX[0]=100; snakeY[0]=100;//脑袋的坐标
snakeX[1]=75; snakeY[1]=100;//第一节身体坐标
snakeX[2]=50; snakeY[2]=100;//第二节身体坐标
fx="R";//初始化方向向右
//把食物随机分布在界面上
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(22);
score = 0 ;
}
//画东西
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
//绘制静态的画板
this.setBackground(Color.WHITE);
Data.header.paintIcon(this,g,25,11);//画头部广告栏
g.fillRect(25,75,850,550);//绘制默认的游戏界面
//画食物
Data.food.paintIcon(this,g,foodx,foody);
//画分数
g.setColor(Color.BLACK);//设置颜色
g.setFont(new Font("微软雅黑",Font.BOLD,18));//设置字体
g.drawString("长度:"+lenght,750,35);
g.drawString("分数:"+score,750,55);
//把小蛇画上去
if(fx.equals("R")){
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 < lenght; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);
}
//游戏提示，是否开始
if(isStart==false){
g.setColor(Color.WHITE);//设置颜色
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);
}
if(isFail){
g.setColor(Color.RED);//设置颜色
g.setFont(new Font("微软雅黑",Font.BOLD,40));//设置字体
g.drawString("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();
if(keyCode==KeyEvent.VK_SPACE){//如果按下空格
if(isFail){
//重新开始
isFail=false;
init();
}else {
isStart = !isStart;
}
repaint();
}
switch (keyCode){
case KeyEvent.VK_UP:
if(fx!="D"){
fx="U";
}
break;
case KeyEvent.VK_DOWN:
if(fx!="U"){
fx="D";
}
break;
case KeyEvent.VK_LEFT:
if(fx!="R"){
fx="L";
}
break;
case KeyEvent.VK_RIGHT:
if(fx!="L"){
fx="R";
}
break;
}
}
//定时器，执行定时操作
@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){
lenght++;//长度+1
score=score+10;
//再次随机生成食物
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(22);
}
//移动
for (int i = lenght-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;
// if(snakeX[0]>850){//边界判断
// snakeX[0]=25;
// }
}else if(fx.equals("L")){
snakeX[0]=snakeX[0]-25;
// if(snakeX[0]<25){//边界判断
// snakeX[0]=850;
// }
}else if(fx.equals("U")){
snakeY[0]=snakeY[0]-25;
// if(snakeY[0]<75){//边界判断
// snakeY[0]=600;
// }
}else if(fx.equals("D")){
snakeY[0]=snakeY[0]+25;
// if(snakeY[0]>600){//边界判断
// snakeY[0]=75;
// }
}
//失败判断，撞到自己和边就失败
for (int i = 1; i < lenght; i++) {
if(snakeX[0]==snakeX[i] && snakeY[0]==snakeY[i]){//撞到自己
isFail=true;
} else if(snakeX[0]>850 || snakeX[0]<25 || snakeY[0]>600 || snakeY[0]<75){//撞到边
isFail=true;
}
}
repaint();
}
timer.start();
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
游戏界面：
游戏存在的问题：
- 食物生成区域存在问题，食物会随机生成到游戏区域外，原因是设计游戏运行区域时存在问题。
- 游戏过于简单
- 界面太丑，所用图片全是PS做的
注意点：
调用图片资源时，注意调用的路径
