java swing框架实现贪吃蛇游戏

package game;
import java.awt.Graphics;

import javax.swing.*;
public class snakeMain extends JFrame {
 public snakeMain() {
 snakeWin win = new snakeWin();
 add(win);
 setTitle("̰贪吃蛇v1.0");
 setSize(435,390);
 setLocation(200, 200);
 setVisible(true);
 }
 public static void main(String[] args) {
 new snakeMain();
 }
}

package game;
public class snakeAct {
 private int x;
 private int y;
 public int getX() {
 return x;
 }
 public void setX(int x) {
 this.x = x;
 }
 public int getY() {
 return y;
 }
 public void setY(int y) {
 this.y = y;
 }
 
}

package game;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.util.List;
public class snakeWin extends JPanel implements ActionListener,KeyListener,Runnable{
 int fenShu=0,Speed=0;
 boolean start = false;
 int rx=0,ry=0;
 int eat1=0,eat2=0;
 JDialog dialog = new JDialog();
 JLabel label = new JLabel("你挂了！你的分数"+fenShu+"");
 JButton ok = new JButton("T_T");
 Random r = new Random();
 JButton newGame,stopGame;
 List<snakeAct> list = new ArrayList<snakeAct>();
 int temp=0;
 Thread nThread;
 public snakeWin() {
 newGame = new JButton("开始");
 stopGame = new JButton("结束");
 newGame.addActionListener(this);
 stopGame.addActionListener(this);
 this.addKeyListener(this);
 this.setLayout(new FlowLayout(FlowLayout.LEFT));
 this.add(newGame);
 this.add(stopGame);
 dialog.setLayout(new GridLayout(2, 1));
 dialog.add(label);
 dialog.add(ok);
 dialog.setSize(200, 200);
 dialog.setLocation(200, 200);
 dialog.setVisible(false);
 ok.addActionListener(this);
 }
 public void paintComponent(Graphics g){
 super.paintComponent(g);
 g.drawRect(10, 40, 400, 300);
 g.drawString("分数"+fenShu, 150, 15);
 g.drawString("速度"+Speed, 150, 35);
 g.setColor(new Color(0, 255, 0));
 if(start){
 g.fillRect(10+rx*10, 40+ry*10, 10, 10);
 for (int i = 0; i < list.size(); i++) {
 g.setColor(new Color(0, 0, 255));
 g.fillRect(10+list.get(i).getX()*10, 40+list.get(i).getY()*10, 10, 10);
 }
 }
 }
 public void actionPerformed(ActionEvent e) {
 if(e.getSource()==newGame){
 newGame.setEnabled(false);
 start = true;
 rx=r.nextInt(40);ry=r.nextInt(30);
 snakeAct tempAct = new snakeAct();
 tempAct.setX(20);
 tempAct.setY(15);
 list.add(tempAct);
 this.requestFocus();
 nThread = new Thread(this);
 nThread.start();
 repaint();
 }
 if(e.getSource()==stopGame){
 System.exit(0);
 }
 if(e.getSource()==ok){
 list.clear();
 start=false;
 newGame.setEnabled(true);
 dialog.setVisible(false);
 fenShu=0;
 Speed=0;
 repaint();
 }
 }
 private void eat() {
 if (rx==list.get(0).getX()&&ry==list.get(0).getY()) {
 rx = r.nextInt(40);ry = r.nextInt(30);
 snakeAct tempAct = new snakeAct();
 tempAct.setX(list.get(list.size()-1).getX());
 tempAct.setY(list.get(list.size()-1).getY());
 list.add(tempAct);
 fenShu = fenShu+100*Speed+10;
 eat1++;
 if(eat1-eat2>=4){
 eat2=eat1;
 Speed++;
 }
 }
 }
 public void otherMove(){
 snakeAct tempAct = new snakeAct();
 for (int i = 0; i < list.size(); i++) {
 if (i==1) {
 list.get(i).setX(list.get(0).getX());
 list.get(i).setY(list.get(0).getY());
 }else if(i>1){
 tempAct=list.get(i-1);
 list.set(i-1, list.get(i));
 list.set(i, tempAct);
 }
 
 }
 }
 public void move(int x,int y){
 if (minYes(x, y)) {
 otherMove();
 list.get(0).setX(list.get(0).getX()+x);
 list.get(0).setY(list.get(0).getY()+y);
 eat();
 repaint();
 }else {
 nThread = null;
 label.setText("你挂了！你的分数"+fenShu+"");
 dialog.setVisible(true);
 }
 
 }
 public boolean minYes(int x,int y){
 if (!maxYes(list.get(0).getX()+x,list.get(0).getY()+ y)) {
 return false;
 }
 return true;
 }
 public boolean maxYes(int x,int y){
 if (x<0||x>=40||y<0||y>=30) {
 return false;
 }
 for (int i = 0; i < list.size(); i++) {
 if (i>1&&list.get(0).getX()==list.get(i).getX()&&list.get(0).getY()==list.get(i).getY()) {
 return false;
 }
 }
 return true;
 }
 public void keyPressed(KeyEvent e) {
 if(start){
 switch (e.getKeyCode()) {
 case KeyEvent.VK_UP:
 move(0, -1);
 temp=1;
 break;
 case KeyEvent.VK_DOWN:
 move(0, 1);
 temp=2;
 break;
 case KeyEvent.VK_LEFT:
 move(-1, 0);
 temp=3;
 break;
 case KeyEvent.VK_RIGHT:
 move(1, 0);
 temp=4;
 break;

 default:
 break;
 }
 }
 }
 public void keyReleased(KeyEvent e) {}
 public void keyTyped(KeyEvent e) {}
 public void run() {
 while (start) {
 switch (temp) {
 case 1:
 move(0, -1);
 break;
 case 2:
 move(0, 1);
 break;
 case 3:
 move(-1, 0);
 break;
 case 4:
 move(1, 0);
 break;
 default:
 break;
 }
 repaint();
 try {
 Thread.sleep(300-30*Speed);
 } catch (InterruptedException e) {
 e.printStackTrace();
 }
 }
 
 }

}