贪吃蛇小游戏
游戏的主启动类
import javax.swing.*;
//游戏的主启动类
public class StarGame {
public static void main(String[] args) {
JFrame jFrame = new JFrame();
jFrame.add(new GamePanel());
//窗口的坐标与大小
jFrame.setBounds(10,10,900,720);
//窗口大小不可变
jFrame.setResizable(false);
//设置窗口为可见的
jFrame.setVisible(true);
//退出窗口
jFrame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
}
}
游戏的面板
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
String fx;
//游戏当前的状态:开始、停止
boolean isStart = false;//默认是不开始！
//食物的坐标
int foodx;
int foody;
Random random = new Random();
//成绩
int score;
//游戏失败状态
boolean isFail = false;
//定时器 以ms为单位 1000ms=1s
Timer timer = new Timer(100,this);//100ms执行一次
//构造器
public GamePanel(){
init();
//获得焦点事件
this.setFocusable(true);
//获得键盘监听事件
this.addKeyListener(this);
//游戏一开始，定时器就启动
timer.start();
}
//初始化方法
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
foodx = 25 + 25 * random.nextInt(34);
foody = 75 + 25 * random.nextInt(24);
//初始化成绩
score = 0;
}
//绘制面板
@Override
protected void paintComponent(Graphics g) {
//用来清屏
super.paintComponent(g);
//绘制静态的画板
setBackground(Color.WHITE);
//广告头
Data.header.paintIcon(this,g,25,11);
//矩形面板
g.fillRect(25,75,850,600);
//画积分
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,18));
g.drawString("长度:" + length,750,34);
g.drawString("分数:" + score,750,51);
//把食物画上去
Data.foot.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]);//蛇头初始化向左
}else if(fx.equals("U")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向上
}else if(fx.equals("D")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);//蛇头初始化向下
}
for (int i = 1; i < length; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);
}
//Data.body.paintIcon(this,g,snakeX[1],snakeY[1]);//第一个身体的坐标
//Data.body.paintIcon(this,g,snakeX[2],snakeY[2]);//第二个身体的坐标
//游戏状态
if (isStart==false){
//设置字体颜色
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",300,300);
}
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！",300,300);
}
}
//键盘监听事件
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode();//获得键盘按键是哪一个
if(keyCode == e.VK_SPACE){//如果按下的空格键
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 = "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··需要通过固定事件来刷新，1s=10次
@Override
public void actionPerformed(ActionEvent e) {
//吃食物
if(snakeX[0] == foodx && snakeY[0] == foody){
//小蛇长度+1
length++;
//分数+10
score = score + 10;
//再次随机食物
foodx = 25 + 25 * random.nextInt(34);
foody = 75 + 25 * random.nextInt(24);
}
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--) {
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("U")){
snakeY[0] = snakeY[0] - 25;
if(snakeY[0] <75){snakeY[0]=650;}
}else if(fx.equals("D")){
snakeY[0] = snakeY[0] + 25;
if(snakeY[0] >650){snakeY[0]=75;}
}
//失败判断，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；
}
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyReleased(KeyEvent e) {
}
}
游戏的素材类
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 ImageIcon up = new ImageIcon(upURL);
public static URL downURL = Data.class.getResource("static/down.png");
public static ImageIcon down = new ImageIcon(downURL);
public static URL bodyURL = Data.class.getResource("static/body.png");
public static ImageIcon body = new ImageIcon(bodyURL);
public static URL leftURL = Data.class.getResource("static/left.png");
public static ImageIcon left = new ImageIcon(leftURL);
public static URL rightURL = Data.class.getResource("static/right.png");
public static ImageIcon right = new ImageIcon(rightURL);
public static URL footURL = Data.class.getResource("static/foot.png");
public static ImageIcon foot = new ImageIcon(footURL);
}
游戏所需素材
body
header
up
right
foot
left
down