贪吃蛇（Java实现）

程序效果：

代码：

//Snake.java  1 package snake;

 import javax.swing.*;
 import java.awt.*;
 import java.awt.event.*;
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.FileNotFoundException;
 import java.io.FileReader;
 import java.io.FileWriter;
 import java.io.IOException;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.Random;
 class go implements Runnable {
     Snake s;
     Random random;
     int foodX = 15, foodY = 15;
 int N;
     go(Snake snake) {
         s = snake;
         random = new Random();
         N=s.N;
     }
     Point getFood() {
         Point p = new Point();
         Iterator<Point> it = s.list.iterator();
         Point temp = it.next();
         boolean isFoodinBody = true;
         while (isFoodinBody) {
             foodX = Math.abs(random.nextInt()) % N;
             foodY = Math.abs(random.nextInt()) % N;
             isFoodinBody = false;
             while (it.hasNext()) {
                 temp = (Point) it.next();
                 if (foodX == temp.x && temp.y == foodY) {
                     isFoodinBody = true;
                     break;
                 }
             }
         }
         return p;
     }
     public void run() {
         while (true) {
             Point first = s.list.getFirst();
             int x = first.x, y = first.y;
             int gotfood = 0;
             if (foodX == x && foodY == y) {
                 if (!s.isDead) {
                     s.SCORE += 100;
                     s.scoreField.setText("SCORE:  "+new Integer(s.SCORE).toString());
                     s.list.add(s.list.getLast());
                 }
                 gotfood = 1;
                 foodX = Math.abs(random.nextInt()) % N;
                 foodY = Math.abs(random.nextInt()) % N;
                 s.bs[foodX][foodY].setBackground(Color.PINK);

             }
             Iterator<Point> it = s.list.iterator();
             Point temp = it.next();
             while (it.hasNext()) {
                 temp = (Point) it.next();
                 if (temp.x == x && temp.y == y) {

                     s.gameOver();

                 }
                 if (gotfood == 1 && foodX == temp.x && temp.y == foodY) {
                     Point food = getFood();
                     foodX = food.x;
                     foodY = food.y;
                     s.bs[foodX][foodY].setBackground(Color.PINK);
                     gotfood=0;
                 }
             }
             switch (s.dir) {
                 case 2 :
                     y =( (y - 1)+N )% N;
                     /*if (y == -1)
                         y = 29;*/
                     break;
                 case 0 :
                     y = (y + 1) % N;
                     break;
                 case 3 :
                     x = ((x - 1)+N) % N;
                     /*if (x == -1)
                         x = 29;*/
                     break;
                 case 1 :
                     x = (x + 1) % N;
                     break;
             }
             Point head = new Point(x, y);
             s.bs[x][y].setBackground(Color.LIGHT_GRAY);

             s.list.addFirst(head);
             Point lastP = s.list.removeLast();
             s.bs[lastP.x][lastP.y].setBackground(Color.GRAY);
             try {
                 Thread.sleep(100);
             } catch (InterruptedException e) {
                 e.printStackTrace();
             }

             /*
              * for (int i = 0; i <= list.size() - 1; i++) { System.out.print(
              * "(" + list.get(i).x + "," + list.get(i).y + ")  ");
              *
              * }
              */
             // System.out.println();

         }
     }
 }
 public class Snake extends JFrame {
     private static final long serialVersionUID = -6494984874207734357L;
     int N = 30;
     int dir = 0;// 0 右 1下 2左 3上
     int SCORE = 0;
     int a=0,b=0,c=0;
     boolean isDead = false;
     JButton[][] bs = new JButton[N][N];
     JPanel panel,scorePanel;
     JTextField scoreField,bestScoreField;
     LinkedList<Point> list;
     Snake() {
         super("Snake");
         Container container = getContentPane();
         container.setLayout(new BorderLayout());
         scorePanel = new JPanel();
         scorePanel .setLayout(new BorderLayout());
         scoreField = new JTextField(20);
         bestScoreField= new JTextField(50);
         bestScoreField.setText(getBestScores());
         bestScoreField.setEditable(false);
         scoreField.setText("SCORE:  "+new Integer(SCORE).toString());
         scoreField.setEditable(false);
         scorePanel.add(scoreField,BorderLayout.WEST);
         scorePanel.add(bestScoreField,BorderLayout.EAST);
         container.add(scorePanel, BorderLayout.NORTH);
         panel = new JPanel();
         panel.setLayout(new GridLayout(N, N));

         for (int i = 0; i <= N - 1; i++) {
             for (int j = 0; j <= N - 1; j++) {
                 bs[i][j] = new JButton();
                 bs[i][j].setBackground(Color.GRAY);
                 panel.add(bs[i][j]);
             }
         }

         container.add(panel, BorderLayout.CENTER);
         list = new LinkedList<Point>();

         list.add(new Point(15, 15));
         list.add(new Point(15, 14));
         list.add(new Point(15, 13));
         list.add(new Point(15, 12));
         list.add(new Point(15, 11));
         for (int i = 0; i <= list.size() - 1; i++) {
             bs[list.get(i).x][list.get(i).y].setBackground(Color.LIGHT_GRAY);
         }
         /*for (int i = 0; i <= list.size() - 1; i++) {
             System.out.print("(" + list.get(i).x + "," + list.get(i).y + ")  ");

         }*/
         /*System.out.println();*/

         this.addKeyListener(new KeyAdapter() {
             public void keyPressed(KeyEvent e) {
                 int c = e.getKeyCode();
                 //System.out.print(c);
                 int dir1 = dir;
                 switch (c) {
                     case KeyEvent.VK_LEFT :
                         dir1 = 2;
                         break;
                     case KeyEvent.VK_RIGHT :
                         dir1 = 0;
                         break;
                     case KeyEvent.VK_UP :
                         dir1 = 3;
                         break;
                     case KeyEvent.VK_DOWN :
                         dir1 = 1;
                         break;
                     default :
                         System.out.print("hey");
                         break;
                 }
                 if (!(dir1 - dir == -2 | dir1 - dir == 2))
                     dir = dir1;
             }
         });
         this.setFocusable(true);
         setLocation(200, 10);
         setSize(800, 700);
         setVisible(true);
     }
     String getBestScores() {

         BufferedReader reader=null;
         try {
             reader=new BufferedReader(new FileReader("score.txt"));
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         }

         try {
         a=Integer.parseInt(reader.readLine());
         b=Integer.parseInt(reader.readLine());
         c=Integer.parseInt(reader.readLine());
         } catch (NumberFormatException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
         String bestS=new String("Best Score: "+new Integer(a).toString()+"   "+new Integer(b).toString()+"   "+new Integer(c).toString());
         return bestS;
     }
 int gameOver(){
     isDead = true;
     JOptionPane.showMessageDialog(null, "你死了~~~.", "GAME OVER",
             JOptionPane.PLAIN_MESSAGE);
     if(SCORE>a){c=b;b=a;a=SCORE;save();System.exit(0);}
     if(SCORE>b){c=b;b=SCORE;save();System.exit(0);}
     if(SCORE>c){c=SCORE;save();System.exit(0);}
     System.exit(0);
     return 0;
 }
 int save(){

     BufferedWriter writer=null;
         try {
             writer=new BufferedWriter(new FileWriter("score.txt"));
         } catch (IOException e) {
             e.printStackTrace();
         }
     String d=new Integer(a).toString(),e=new Integer(b).toString(),f=new Integer(c).toString();
     try {
         writer.write(d);
         writer.newLine();
         writer.write(e);
         writer.newLine();
         writer.write(f);
         writer.flush();
         writer.close();
         } catch (NumberFormatException ev) {
         ev.printStackTrace();
     } catch (IOException ev) {
         ev.printStackTrace();
     }
     return 0;
 }
     public static void main(String[] args) {
         Snake snake = new Snake();
         snake.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         Thread thread = new Thread(new go(snake));
         thread.start();
     }

 }

程序写于大三上学期。

2016.4.12更新博客。

END