以上是准备工作
Data
import javax.swing.*;
import java.net.URL;
public class Data {
public static URL headerURL=Data.class.getResource("static/header.png");
public static ImageIcon header =new ImageIcon(headerURL);
public static URL upURL=Data.class.getResource("static/up.png");
public static URL downURL=Data.class.getResource("static/down.png");
public static URL leftURL=Data.class.getResource("static/left.png");
public static URL rightURL=Data.class.getResource("static/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);
public static URL bodyURL=Data.class.getResource("static/body.png");
public static ImageIcon body =new ImageIcon(bodyURL);
public static URL foodURL=Data.class.getResource("static/food.png");
public static ImageIcon food =new ImageIcon(foodURL);
}
GamePanel
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
int length;//蛇的长度
// 蛇的x，y坐标
int[]snakeX=new int[600];
int[]snakeY=new int[500];
String fx;
//游戏当前的状态：开始，停止
boolean isStart=false;//默认是不开始
boolean isFail=false;//游戏结果的状态
int score;
int foody,foodx;
Random random=new Random();
//定时器 ms为单位 1000ms=1s
Timer timer=new Timer(100,this);
//构造器
public GamePanel(){
init();
//获得焦点和键盘事件
this.setFocusable(true);
this.addKeyListener(this);
timer.start();//游戏qidong
}
public void init(){
length=3;
snakeX[0]=100;snakeY[0]=100;//脑袋坐标
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
fx="R";//inti向右
//随机分布food
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(24);
score=0;
}
@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);//画头部广告
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,18));
g.drawString("长度 "+length,750,30);
g.drawString("积分 "+score,750,55);
//画食物
Data.food.paintIcon(this,g,foodx,foody);
//把小蛇画上去
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L
}
else if(fx.equals("U")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向UP
}
else if(fx.equals("D")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向down
}
for(int i=1;i<length;i++){
Data.body.paintIcon(this,g,snakeX[i],snakeY[i] );
}
//游戏状态
if(isStart==false){
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,30));
g.drawString("Pressed the Blank Key Begin Game",300,300);
}
//游戏结束
if(isFail){
g.setColor(Color.RED);
g.setFont(new Font("微软雅黑",Font.BOLD,30));
g.drawString("The Game Is Failed",250,300);
}
}
@Override
public void keyPressed(KeyEvent e) {
int keyCode=e.getKeyCode();//获得键盘参数
//空格开始
if(keyCode==KeyEvent.VK_SPACE){
if(isFail){
isFail=false;
}else{
isStart=!isStart;}
repaint();
}
//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";
}
//走向
if(fx.equals("R")){
snakeX[0]=snakeX[0]+25;
if(snakeX[0]>850){snakeX[0]=25;}//边界判断
}else if(fx.equals("L")){
snakeX[0]=snakeX[0]-25;
if(snakeX[0]<25){snakeX[0]=850;}//边界判断
}else if(fx.equals("U")){
snakeY[0]=snakeY[0]-25;
if(snakeY[0]<75){snakeY[0]=650;}//边界判断
}else if(fx.equals("D")){
snakeY[0]=snakeY[0]+25;
if(snakeY[0]>650){snakeY[0]=75;}//边界判断
}
}
@Override
public void actionPerformed(ActionEvent e) {
if(isStart&&isFail==false){
for (int i = length-1; i >0 ; i--) {
snakeX[i]=snakeX[i-1];
snakeY[i]=snakeY[i-1];
}
if(snakeX[0]==foodx&&snakeY[0]==foody){
length++;
score+=10;
//重置食物
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(24);
}
//头部走向
if(fx.equals("R")){
snakeX[0] = snakeX[0]+25; //头部右移25个单位（即一格）
if(snakeX[0]>850){ //边界判断：如果蛇右移到了边界，则回到左边
snakeX[0] = 25;
}
}else if(fx.equals("L")){
snakeX[0] = snakeX[0]-25; //头部左移25个单位（即一格）
if(snakeX[0]<25){snakeX[0] = 850;} //边界判断
}else if(fx.equals("U")){
snakeY[0] = snakeY[0]-25; //向上移动应该是-25
if(snakeY[0]<75){snakeY[0] = 650;} //边界判断
}else if(fx.equals("D")){
snakeY[0] = snakeY[0]+25; //向下移动
if(snakeY[0]>650){snakeY[0] = 75;} //边界判断
}
for (int i = 1; i < length; i++) { //头部与身体的某一节坐标重合，即撞到自己
if(snakeX[0] == snakeX[i] && snakeY[0]==snakeY[i]){
isFail=true;
init();
}
}
repaint();
}
timer.start();
}
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
StartGame
import javax.swing.*;
public class StartGame {
public static void main(String[] args) {
JFrame frame=new JFrame();
frame.setBounds(10,10,900,720);
//窗口设置大小固定
frame.setResizable(false);
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
//正常游戏界面都应该在面上
frame.add(new GamePanel());
frame.setVisible(true);
}
}
