注:该贪吃蛇模型是跟着狂神—秦老师的教学视频敲的,想听课程可直接去b站听老师的课,讲的很清楚!
StartGame类
import javax.swing.*;
public class StartGame {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setBounds(10, 10, 900, 720);
frame.setResizable(false);//窗口大小不变
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);
}
}
GamePanel类
import com.tao.Data;
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
int[] snakeY=new int[500];//蛇的y坐标
String fx;
boolean isStart;//游戏当前的状态:开始,停止
boolean isFail;
int score;//成绩
//食物的坐标
int foodx;
int foody;
Random random=new Random();
//定时器 以ms为单位
Timer timer=new Timer(100,this);//100毫秒执行一次!
//构造器
public GamePanel() {
init();
//获得焦点和键盘事件
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
public void init(){
length=3;
snakeX[0]=100;snakeY[0]=100;//脑袋的坐标
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";//初始方向向右
isStart=false;//初始停止
isFail=false;//初始游戏没失败
score=0;//初始分数为0
//把食物随机分布到界面上!
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(24);
}
//绘制面板,游戏中的所有东西,都使用这一个画笔
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);//清屏
//绘制静态面板
this.setBackground(Color.WHITE);
Data.header.paintIcon(this,g,25,11);//头部广告栏画上去
g.fillRect(25,75,850,600);//默认的游戏界面
//画上随机食物
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,需要通过方向来判断
}else if (fx.equals("L")) {
Data.left.paintIcon(this, g, snakeX[0], snakeY[0]);
}else if (fx.equals("N")) {
Data.up.paintIcon(this, g, snakeX[0], snakeY[0]);
}else if (fx.equals("S")) {
Data.down.paintIcon(this, g, snakeX[0], snakeY[0]);
}
for (int i = 1; i < length; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);
}
//画上积分
g.setColor(Color.WHITE);
g.setFont(new Font("微软雅黑",Font.BOLD,18));
g.drawString("长度:"+length,800,35);
g.drawString("分数:"+score,800,55);
//游戏状态
if(isStart==false){
g.setColor(Color.pink);
//设置字体
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("按下空格开始游戏",300,300);
}
if(isFail){
g.setColor(Color.red);
//设置字体
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("游戏失败,按下空格重新开始",300,300);
}
}
//键盘监听器
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();//获得键盘按键是哪一个
if(keyCode==KeyEvent.VK_SPACE){//如果按下空格键
if(isFail){
//重新开始
isFail=false;
init();
}else {
isStart=!isStart;//取反
}
repaint();
}
//小蛇移动
if(keyCode==KeyEvent.VK_UP){
fx="N";
}else if(keyCode==KeyEvent.VK_DOWN){
fx="S";
}else if(keyCode==KeyEvent.VK_LEFT){
fx="L";
}else if(keyCode==KeyEvent.VK_RIGHT){
fx="R";
}
}
//事件监听(定时器):通过固定的时间来刷新,1s=10次
@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--) {//后一节移到前一节的位置
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) 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("N")){
snakeY[0]=snakeY[0]-25;
if (snakeY[0]<75) snakeY[0]=650;//边界判断
}else if (fx.equals("S")){
snakeY[0]=snakeY[0]+25;
if (snakeY[0]>650) snakeY[0]=75;//边界判断
}
//吃食物
if (snakeX[0]==foodx&&snakeY[0]==foody){
//长度+1
length++;
//分数加10
score+=10;
//再次随机食物
foodx=25+25*random.nextInt(34);
foody=75+25*random.nextInt(24);
}
//失败判定,撞到自己就失败
for (int i = 1; i < length; i++) {
if (snakeX[0]==snakeX[i]&&snakeY[0]==snakeY[i]){
isFail=true;
}
}
repaint();//重画一遍
}
timer.start(); //定时器开启!
}
@Override
public void keyTyped(KeyEvent e) { }
@Override
public void keyReleased(KeyEvent e) { }
}
Data类
import javax.swing.*;
import java.net.URL;
//数据中心
public class Data {
//相对路径
//绝对路径,相当于当前的项目
public static URL headerURL = Data.class.getResource("/statics/header.png");
public static ImageIcon header = new ImageIcon(headerURL);
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);
public static URL bodyURL = Data.class.getResource("/statics/body.png");
public static ImageIcon body = new ImageIcon(bodyURL);
public static URL foodURL = Data.class.getResource("/statics/food.png");
public static ImageIcon food = new ImageIcon(foodURL);
}
运行效果图如下所示: