JFrame frame = new JFrame("狂神说Java-贪吃蛇小游戏");
frame.setBounds(10,10,900,720); // 设置窗口的位置和大小
frame.setResizable(false); //窗口大小不可调整,即固定窗口大小
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设置关闭事件，游戏可以关闭
frame.setVisible(true);
frame.add(new GamePanel);
public static URL headerUrl = Data.class.getResource("/statics/header.png");
public static ImageIcon header = new ImageIcon(headerUrl);
//头：
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);
//身体
public static URL bodyUrl = Data.class.getResource("/statics/body.png");
public static ImageIcon body = new ImageIcon(bodyUrl);
//食物
public static URL foodUrl = Data.class.getResource("/statics/food.png");
public static ImageIcon food = new ImageIcon(foodUrl);
int lenth; //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"; //蛇的方向 ： R:右 L:左 U:上 D:下
boolean isStart = false; //游戏是否开始
Timer timer = new Timer(100, this); //定时器：第一个参数，就是定时执行时间
//食物
int foodx;
int foody;
Random random = new Random();
boolean isFail = false; //游戏是否结束
int score; //游戏分数！
//构造方法
public GamePanel(){
init();//初始化
this.setFocusable(true); //获取焦点事件
this.addKeyListener(this); //键盘监听事件
timer.start();
}
//初始化方法
public void init(){
lenth = 3;//初始小蛇有三节,包括小脑袋
//初始化开始的蛇,给蛇定位,
snakeX[0] = 100; snakeY[0] = 100;
snakeX[1] = 75; snakeY[1] = 100;
snakeX[2] = 50; snakeY[2] = 100;
//初始化食物数据
foodx = 25 + 25* random.nextInt(34);
foody = 75 + 25* random.nextInt(24);
score=0;
}
//画组件
public void paintComponent(Graphics g){
super.paintComponent(g);//清屏
this.setBackground(Color.WHITE); //设置面板的背景色
Data.header.paintIcon(this,g,25,11); //绘制头部信息区域
g.fillRect(25,75,850,600); //绘制游戏区域
//把小蛇画上去
if (fx.equals("R")){ //蛇的头通过方向变量来判断
Data.right.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("L")){
Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("U")){
Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);
}else if (fx.equals("D")){
Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);
}
for (int i = 1; i < lenth; i++) {
Data.body.paintIcon(this,g,snakeX[i],snakeY[i]); //蛇的身体长度根据lenth来控制
}
//画食物
Data.food.paintIcon(this,g,foodx,foody);
//话积分
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",1,18));
g.drawString("长度："+lenth,750,35);
g.drawString("分数："+score,750,50);
//游戏提示
if (isStart==false){
g.setColor(Color.white);
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("按下空格开始游戏!",300,300);
}
//失败提醒
if (isFail){
//draw a character ,String
g.setColor(Color.red);
g.setFont(new Font("微软雅黑",Font.BOLD,40));
g.drawString("game over!",200,300);
}
}
@Override
public void keyTyped(KeyEvent e) {
}
//键盘监听事件
@Override
public void keyPressed(KeyEvent e) {
int keyCode = e.getKeyCode(); //获取按下的键盘
if (keyCode==KeyEvent.VK_SPACE){ //如果是空格
if (isFail){ //如果游戏失败,从头再来！
isFail = false;
init(); //重新初始化
}else { //否则，暂停游戏
isStart = !isStart;
}
repaint();
}
//键盘控制走向
if (keyCode==KeyEvent.VK_LEFT){
fx = "L";
}else if (keyCode==KeyEvent.VK_RIGHT){
fx = "R";
}else if (keyCode==KeyEvent.VK_UP){
fx = "U";
}else if (keyCode==KeyEvent.VK_DOWN){
fx = "D";
}
}
@Override
public void keyReleased(KeyEvent e) {
}
//定时执行的操作
@Override
public void actionPerformed(ActionEvent e) {
//如果游戏处于开始状态，并且没有结束，则小蛇可以移动
if (isStart && isFail==false){
//右移:即让后一个移到前一个的位置即可 !
for (int i = lenth-1; i > 0; i--) { //除了脑袋都往前移：身体移动
snakeX[i] = snakeX[i-1]; //即第i节(后一节)的位置变为(i-1：前一节)节的位置！
snakeY[i] = snakeY[i-1];
}
//通过方向控制，头部移动
if (fx.equals("R")){
snakeX[0] = snakeX[0]+25;
if (snakeX[0]>850) snakeX[0] = 25;
}else if (fx.equals("L")){
snakeX[0] = snakeX[0]-25;
if (snakeX[0]<25) snakeX[0] = 850;
}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;
}
//吃食物:当蛇的头和食物一样时,算吃到食物!
if (snakeX[0]==foodx && snakeY[0]==foody){
//1.长度加一
lenth++;
score+=10;
//2.重新生成食物
foodx = 25 + 25* random.nextInt(34);
foody = 75 + 25* random.nextInt(24);
}
for (int i = 1; i < lenth; i++) {
if (snakeX[0]==snakeX[i] && snakeY[0]==snakeY[i]){
isFail=true;
}
}
repaint(); //需要不断的更新页面实现动画
}
timer.start();//让时间动起来!
}
project Structure->artifacts->生成jar包在out文件夹中
java -jar ???.jar
a. Timer（delay:100，listener:this）：定时器，要面板运行需要用timer.start
b. repaint:重置面板画面，实现动画
c.
//通过class.getresource（）获取资源路径，然后new 一个ImageIcon对象实现对资源的调用
public static URL headerUrl = Data.class.getResource("/statics/up.png");
public static ImageIcon up = new ImageIcon(headUrl);
//Data.up.paintIcon()可以画出up这个图片，实现对资源的调取
原文：https://www.cnblogs.com/huangdichuan/p/14613468.html