贪吃蛇小游戏
贪吃蛇
B站：狂神说Java
帧，如果时间片足够小，就是动画，一秒30帧，60帧。 连起来是动画，拆开就是静态的图片!
键盘监听
定时器Timer
StartGame类
package com.mike.snake;
import javax.swing.*;
//游戏的主启动类
public class StartGame {
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setTitle("贪吃蛇");
frame.setBounds(10,10,900,720);
frame.setResizable(false);//窗口大小不可变
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);
}
}
Data类
package com.mike.snake;
import sun.net.www.content.image.png;
import javax.swing.*;
import java.net.URL;
//数据中心
public class Data {
public static URL headerURL = Data.class.getResource("statics/header05.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);
}
GamePanel类
package com.mike.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;
//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 25*25
int[] snakeY = new int[500];//蛇的Y坐标 25*25
//蛇的方向
String fx;
//食物的坐标
int foodx;
int foody;
//产生随机数
Random random = new Random();
//积分数据
int score;//成绩
//游戏当前的状态:开始，停止
boolean isStart = false;//默认是不开始！
//游戏初始默认是不失败
boolean isFail =false;
//定时器 以ms为单位1000ms = 1s（设置的太大，蛇就会跑的越快）
Timer timer =new Timer(100,this);//100毫秒刷新(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
}
//=========================================================================================
//初始化方法
public void init(){
//初始蛇的数据
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
//把食物随机分布到34*24的界面上!
foodx = 25 + 25*random.nextInt(34);
foody = 75 + 25*random.nextInt(24);
//初始分数为0
score = 0;
}
//=========================================================================================
//绘制面板，我们游戏中的所有东西，都是用这个画笔来画
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);//清屏的作用
//绘制静态的面板
this.setBackground(Color.WHITE);
//=========================================================================================
//画顶部广告栏
Data.header.paintIcon(this,g,25,8);//头部广告栏画上去
g.fillRect(25,75,850,600);//默认的游戏界面
//=========================================================================================
//画积分
g.setColor(Color.PINK);
g.setFont(new Font("微软雅黑",Font.BOLD,19));
g.drawString("长度："+length,750,40);
g.drawString("分数："+score,750,60);
//=========================================================================================
//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,需要通过方向来判制
}else if (fx.equals("L")){
Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判制
}else if (fx.equals("U")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判制
}else if (fx.equals("D")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向右,需要通过方向来判制
}
for (int i = 1; i < length; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);//第一个身体的坐标
}
//=========================================================================================
//画初始的游戏状态，按下空格开始游戏
if (isStart==false){
g.setColor(Color.WHITE);
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",300,400);
}
if (isFail){
g.setColor(Color.RED);
g.setFont(new Font("微软雅黑",Font.BOLD,40));//设置字体
g.drawString("游戏失败,按下空格重新开始",200,400);
}
}
//=========================================================================================
//键盘监听事件，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){//如果按下的是空格键，就让蛇动起来
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 = "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";
}
}
//=========================================================================================
//事件监听--需要通过固定的时间来刷新，1秒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!
//吃食物
if (snakeX[0] == foodx && snakeY[0] ==foody){
//长度+1
length++;
//分数吃一个就加10
score = score + 10;
//再次随机食物
foodx = 25 + 25*random.nextInt(34);
foody = 75 + 25*random.nextInt(24);
}
//移动
for (int i = length-1; i >0 ; i--) {//后一节移到前一节的位置 snakeX[1] = snakeX[0]
snakeX[i] = snakeX[i-1];//向前移一节（格）
snakeY[i] = snakeY[i-1];
}
//走向
if (fx.equals("R")){
snakeX[0] = snakeX[0]+25;
//边界判断
if (snakeX[0]>850){
snakeX[0] = 25;
}
} else if (fx.equals("L")){
snakeX[0] = snakeX[0]-25;
//边界判断
if (snakeX[0]<25){
snakeX[0] = 850;
}
}else if (fx.equals("U")){
snakeY[0] = snakeY[0]-25;
//边界判断
if (snakeY[0]<75){
snakeY[0] = 650;
}
}else if (fx.equals("D")){
snakeY[0] = snakeY[0]+25;
//边界判断
if (snakeY[0]>650){
snakeY[0] = 75;
}
}
//失败判断的事件,撞到自己就算失败
for (int i = 1; i < length; i++) {
if (snakeX[0] == snakeX[i] && snakeY[0] == snakeY[i]){
isFail = true;
}
}
repaint();//重画页面
}
timer.start();//定时器开启
}
//下面两个用不到就折叠起来不去管它
@Override
public void keyReleased(KeyEvent e) {
}
@Override
public void keyTyped(KeyEvent e) {
}
}
运行截图
