根据B站狂神说java视频 一点一点写的贪吃蛇小游戏(自己又补充了一些功能)不能撞墙-不能掉头
直接上源码
StartGame.java
package codeyuaiiao;
import javax.swing.*;
/**
* 游戏开始
* by:codeyuaiiao
*/
public class StartGame {
public static void main(String[] args) {
//1.绘制一个静态窗口
JFrame jf = new JFrame("codeyuaiiao-java贪吃蛇小游戏");
jf.setBounds(10,10,900,720);//给窗口制定位置和长宽大小
jf.setResizable(false);//自动更改窗口大小
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//是否可以手动关闭窗口
//2.绘制一个面板 添加组件到JFrame
jf.add(new GamePanel());
//3.显示窗口
jf.setVisible(true);
}
}
GamePanel.java
package codeyuaiiao;
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;
/**
* 游戏画板
* by:codeyuaiiao
*/
public class GamePanel extends JPanel implements KeyListener, ActionListener {
int length;//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":right;"D":down;"U":up;"L":Left;
boolean isStart = false;//游戏开始
Timer timer = new Timer(100,this);//定时器
//食物坐标
int foodX;
int foodY;
Random random = new Random();//生成随机数
//死亡判断
boolean isfail = false;
//积分
int score;
//构造器
public GamePanel(){
init();
//获取键盘的监听事件
this.setFocusable(true);//设置焦点
this.addKeyListener(this);//添加事件监听事件
timer.start();//定时器开始
}
//初始化
public void init(){
length = 3;
snakeX[0] = 100;snakeY[0] = 100;//头
snakeX[1] = 75; snakeY[1] = 100;//第一个身体
snakeX[2] = 50;snakeY[2] = 100;//第二个身体
fx = "R";
foodX = 25 + 25*random.nextInt(34);
foodY = 75 + 25*random.nextInt(24);
score = 0;
}
//画面板 Ctrl+O 重写
//Graphics g: 画笔
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);//清屏
this.setBackground(Color.white);//设置背景颜色
Date.header.paintIcon(this,g,25,11); //绘制头部广告栏
g.fillRect(25,75,850,600);//绘制游戏区域
//画一条静态的小蛇
if(fx.equals("R")){
Date.right.paintIcon(this,g,snakeX[0],snakeY[0]);
}
if(fx.equals("D")){
Date.down.paintIcon(this,g,snakeX[0],snakeY[0]);
}
if(fx.equals("U")){
Date.up.paintIcon(this,g,snakeX[0],snakeY[0]);
}
if(fx.equals("L")){
Date.left.paintIcon(this,g,snakeX[0],snakeY[0]);
}
//通过控制length的长度来控制小蛇的长度
for (int i = 1; i < length; i++) {
Date.body.paintIcon(this,g,snakeX[i],snakeY[i]);
}
//画积分
g.setColor(Color.white);
g.setFont(new Font("楷体",Font.BOLD,16));
g.drawString("长度"+length,750,35);
g.drawString("分数"+score,750,55);
//画食物
Date.food.paintIcon(this,g,foodX,foodY);
if(snakeX[0]==foodX && snakeY[0]==foodY){
//小蛇长度+1
length++;
//积分+10
score += 10;
foodX = 25 + 25*random.nextInt(34);
foodY = 75 + 25*random.nextInt(24);
}
//画开始文字
if(isStart == false){
g.setColor(Color.white);
g.setFont(new Font("楷体",Font.BOLD,40));//设置字体
g.drawString("按下空格开始游戏",300,300);
}
//画失败文字
if(isfail){
g.setColor(Color.RED);
g.setFont(new Font("楷体",Font.BOLD,40));//设置字体
g.drawString("游戏失败,按下空格开始游戏",200,300);
}
}
//按键监听
public void keyPressed(KeyEvent e) {
//获取键盘按下的是哪个按键
int keyCode = e.getKeyCode();
//判断按键与设定的按键是否一致
if(keyCode == KeyEvent.VK_SPACE){
if(isfail){
//失败,再来一遍
isfail = false;
init();
}else{
//暂停游戏
isStart = !isStart;
}
repaint();//刷新界面
}
//监听键盘按键,头部变换方向(图片)
//小蛇不能掉头
if(keyCode == KeyEvent.VK_LEFT){
if(fx.equals("R")){
fx = "R";
}else{
fx = "L";
}
} else if (keyCode == KeyEvent.VK_RIGHT){
if(fx.equals("L")){
fx = "L";
}else{
fx = "R";
}
}if(keyCode == KeyEvent.VK_UP){
if(fx.equals("D")){
fx = "D";
}else{
fx = "U";
}
} else if (keyCode == KeyEvent.VK_DOWN){
if(fx.equals("U")){
fx = "U";
}else{
fx = "D";
}
}
}
//定时器 监听事件.帧:执行定时操作
public void actionPerformed(ActionEvent e) {
if (isStart && isfail == false) {
//如果游戏开始,且游戏没有失败
//右移
for (int i = length - 1; i > 0; i--) {
snakeX[i] = snakeX[i - 1];
snakeY[i] = snakeY[i - 1];
}
if (fx.equals("R")) {
snakeX[0] = snakeX[0] + 25;
//小蛇碰墙循环
// if (snakeX[0] > 850) {
// snakeX[0] = 25;
// }
} else if (fx.equals("L")) {
snakeX[0] = snakeX[0] - 25;
//小蛇碰墙循环
// if (snakeX[0] < 25) {
// snakeX[0] = 850;
// }
} else if (fx.equals("U")) {
snakeY[0] = snakeY[0] - 25;
//小蛇碰墙循环
// if (snakeY[0] < 75) {
// snakeY[0] = 650;
// }
} else if (fx.equals("D")) {
snakeY[0] = snakeY[0] + 25;
//小蛇碰墙循环
// if (snakeY[0] > 650) {
// snakeY[0] = 75;
// }
}
//碰撞检测---小蛇头和身体
for (int i = 1; i < length; i++) {
if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]) {
isfail = true;
}
}
//碰撞检测--小蛇头和墙壁
if ((snakeX[0]<25 || snakeX[0]>850)||(snakeY[0]<75 || snakeY[0]>650 ) ){
isfail = true;
}
repaint();//刷新界面
}
timer.start();
}
public void keyReleased(KeyEvent e) {
}
public void keyTyped(KeyEvent e) {
}
}
Date.java
package codeyuaiiao;
import javax.swing.*;
import java.net.URL;
/**
* 存放外部数据
* by:codeyuaiiao
*/
public class Date {
//头部
public static URL headerURL = Date.class.getResource("/main/java/statics/header.png");
public static ImageIcon header = new ImageIcon(headerURL);
//贪吃蛇 头部上下左右
public static URL upURL = Date.class.getResource("/main/java/statics/up.png");
public static URL downURL = Date.class.getResource("/main/java/statics/down.png");
public static URL leftURL = Date.class.getResource("/main/java/statics/left.png");
public static URL rightURL = Date.class.getResource("/main/java/statics/right.png");
public static ImageIcon up = new ImageIcon(upURL);//上
public static ImageIcon down = new ImageIcon(downURL);//下
public static ImageIcon left = new ImageIcon(leftURL);//左
public static ImageIcon right = new ImageIcon(rightURL);//右
//身体
public static URL bodyURL = Date.class.getResource("/main/java/statics/body.png");
public static ImageIcon body = new ImageIcon(bodyURL);
//食物
public static URL foodURL = Date.class.getResource("/main/java/statics/food.png");
public static ImageIcon food = new ImageIcon(foodURL);
}
pom.xml
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>codeyuaiiao.StartGame</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
一共三个类
还有一个pom文件 里面的这些代码 用于maven打包 如果没有pom中这些代码 导出来的jar包会出现错误"找不到主类"
可以看我另一篇博客
maven导出jar包出现"找不到主类"错误
最后是程序运行的成果
看到最后的帮忙点个赞👍🙏 谢谢,这个对我真的很重要！
转载：https://blog.csdn.net/qq_43649223/article/details/108832819
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