/*** @Description 键盘控制小蛇移动*/
package com.ai.snake;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);  //窗口大小不可变frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);//正常游戏界面都应该在上面！frame.add(new GamePanel());frame.setVisible(true);}
}/*** Ctrl+Tab 或 Alt+左右方向键     切换正在编辑窗口*/

/*** @Description 键盘控制小蛇移动*/
package com.ai.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;//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*25int[] snakeY = new int[500];    //蛇的 Y 坐标 25*25String direction; //初始方向//游戏当前的状态:  开始,停止boolean isStart = false;    //默认是不开始！//定时器   以 ms 为单位 1000ms = 1sTimer 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direction ="R"; //初始方向向右}//绘制面板,我们游戏中的所有东西,都是用这个画笔来画@Overrideprotected void paintComponent(Graphics g){super.paintComponent(g);    //清屏//绘制静态的面板this.setBackground(Color.WHITE);Data.header.paintIcon(this,g,15,5);    //头部广告栏画上去g.fillRect(15,60,850,600);  //默认的游戏界面//把小蛇画上去if(direction.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(direction.equals("L")){Data.left.paintIcon(this,g,snakeX[0],snakeY[0]);   //蛇头初始化向右,需要通过方向来判断}else if(direction.equals("U")){Data.up.paintIcon(this,g,snakeX[0],snakeY[0]);   //蛇头初始化向右,需要通过方向来判断}else if(direction.equals("D")){Data.down.paintIcon(this,g,snakeX[0],snakeY[0]);   //蛇头初始化向右,需要通过方向来判断}for (int i = 1; i < length; i++) {Data.body.paintIcon(this,g,snakeX[i],snakeY[i]);   //第二个身体的坐标}//游戏状态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",300,300);}}//键盘监听事件@Overridepublic void keyPressed(KeyEvent e) {int keyCode = e.getKeyCode();   //获得键盘按键是哪一个if (keyCode == KeyEvent.VK_ENTER);{     //如果按下的是空格键isStart = !isStart;     //取反repaint();}//小蛇移动if(keyCode==KeyEvent.VK_UP){direction = "U";}else if(keyCode==KeyEvent.VK_DOWN){direction = "D";}else if(keyCode==KeyEvent.VK_LEFT){direction = "L";}else if(keyCode==KeyEvent.VK_RIGHT){direction = "R";}}//事件监听---需要通过固定事件来刷新,1s=10次@Overridepublic void actionPerformed(ActionEvent e) {if (isStart) {  //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[1] = snakeX[0];snakeX[i] = snakeX[i-1];snakeY[i] = snakeY[i-1];}//走向if(direction.equals("R")){snakeX[0] = snakeX[0] + 25;if(snakeX[0]>850){snakeX[0] =25;}   //边界判断}else if (direction.equals("L")){snakeX[0] = snakeX[0] - 25;if(snakeX[0]<15){snakeX[0] =850;}   //边界判断}else if (direction.equals("U")){snakeY[0] = snakeY[0] - 25;if(snakeY[0]<55){snakeY[0] =630;}   //边界判断}else if (direction.equals("D")){snakeY[0] = snakeY[0] + 25;if(snakeY[0]>650){snakeY[0] =60;}   //边界判断}repaint();  //重画页面}timer.start();  //定时器开启}@Overridepublic void keyReleased(KeyEvent e) {}@Overridepublic void keyTyped(KeyEvent e) {}}

/*** @Description 键盘控制小蛇移动*/
package com.ai.snake;import javax.swing.*;
import java.net.URL;//数据中心
public class Data {//相对路径  tx.jpg//绝对路径  /   相当于当前的项目private static URL headerURL = Data.class.getResource("statics/header.jpg");public static ImageIcon header = new ImageIcon(headerURL);public static URL upURL = Data.class.getResource("statics/up.jpg");public static URL downURL = Data.class.getResource("statics/down.jpg");public static URL leftURL = Data.class.getResource("statics/left.jpg");public static URL rightURL = Data.class.getResource("statics/right.jpg");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.jpg");public static ImageIcon body = new ImageIcon(bodyURL);public static URL foodURL = Data.class.getResource("statics/food.jpg");public static ImageIcon food = new ImageIcon(foodURL);}