贪吃蛇代码

  1 package moonsnake;
  2 
  3 
  4 import java.awt.Color;
  5 import java.awt.Font;
  6 import java.awt.Graphics;
  7 import java.awt.event.ActionEvent;
  8 import java.awt.event.ActionListener;
  9 import java.awt.event.KeyEvent;
 10 import java.awt.event.KeyListener;
 11 import java.util.Random;
 12 
 13 import javax.swing.ImageIcon;
 14 import javax.swing.JPanel;
 15 import javax.swing.Timer;
 16 
 17 public class MPanel extends JPanel implements KeyListener, ActionListener {
 18     ImageIcon title = new ImageIcon("title.png");
 19     ImageIcon body = new ImageIcon("body.png");
 20     ImageIcon up = new ImageIcon("up.png");
 21     ImageIcon down = new ImageIcon("down.png");
 22     ImageIcon left = new ImageIcon("left.png");
 23     ImageIcon right = new ImageIcon("right.png");
 24     ImageIcon food = new ImageIcon("food.png");
 25     
 26     int len = 3;
 27     int score = 0;
 28     int[] snakex = new int[750];
 29     int[] snakey = new int[750];
 30     String fx = "R";//方向 R,L,U,D
 31     boolean isStarted = false;
 32     boolean isFailed = false;
 33     Timer timer = new Timer(200,this);
 34     int foodx;
 35     int foody;
 36     Random rand = new Random();
 37     
 38     public MPanel() {
 39         initSnake();
 40         this.setFocusable(true);
 41         this.addKeyListener(this);
 42         timer.start();
 43     }
 44     
 45     public void paintComponent(Graphics g) {
 46         super.paintComponent(g);
 47         this.setBackground(Color.WHITE);
 48         title.paintIcon(this, g, 25, 11);
 49         g.fillRect(25, 75, 850, 600);
 50         g.setColor(Color.WHITE);
 51         g.drawString("len " + len, 750, 35);
 52         g.drawString("score " + score, 750, 50);
 53         
 54         if(fx == "R") {
 55             right.paintIcon(this, g, snakex[0], snakey[0]);
 56         }else if(fx == "L") {
 57             left.paintIcon(this, g, snakex[0], snakey[0]);
 58         }else if(fx == "D") {
 59             down.paintIcon(this, g, snakex[0], snakey[0]);
 60         }else if(fx == "U") {
 61             up.paintIcon(this, g, snakex[0], snakey[0]);
 62         }
 63         
 64         
 65         for(int i=1; i< len; i++) {
 66             body.paintIcon(this, g, snakex[i], snakey[i]);
 67         }
 68         
 69         food.paintIcon(this, g, foodx, foody);
 70         
 71         if(isStarted == false) {
 72             g.setFont(new Font("arial", Font.BOLD, 40));
 73             g.setColor(Color.WHITE);
 74             g.drawString("Press Space to Start", 300, 300);
 75         }
 76         if(isFailed) {
 77             g.setFont(new Font("arial", Font.BOLD, 40));
 78             g.setColor(Color.RED);
 79             g.drawString("Filed: Press Space to Restart", 200, 300);
 80         }
 81     }
 82     
 83     public void initSnake() {
 84         len = 3;
 85         snakex[0] = 100;
 86         snakey[0] = 100;
 87         snakex[1] = 75;
 88         snakey[1] = 100;
 89         snakex[2] = 50;
 90         snakey[2] = 100;
 91         foodx = 25 + 25 * rand.nextInt(34);
 92         foody = 75 + 25 * rand.nextInt(24);
 93         fx = "R";
 94         score = 0;
 95     }
 96 
 97     @Override
 98     public void keyPressed(KeyEvent e) {
 99         
100     }
101 
102     @Override
103     public void keyReleased(KeyEvent e) {
104         int keyCode = e.getKeyCode();
105         if(keyCode == KeyEvent.VK_SPACE) {
106             if(isFailed) {
107                 isFailed = false;
108                 initSnake();
109             }else {
110                 isStarted = !isStarted;
111             }        
112             repaint();
113         }else if(keyCode == KeyEvent.VK_LEFT) {
114             fx = "L";
115         }else if(keyCode == KeyEvent.VK_RIGHT) {
116             fx = "R";
117         }else if(keyCode == KeyEvent.VK_UP) {
118             fx = "U";
119         }else if(keyCode == KeyEvent.VK_DOWN) {
120             fx = "D";
121         }
122         
123     }
124 
125     @Override
126     public void keyTyped(KeyEvent e) {
127         
128     }
129 
130     @Override
131     public void actionPerformed(ActionEvent e) {
132         if(isStarted && !isFailed) {
133             for(int i=len-1; i>0; i--) {
134                 snakex[i] = snakex[i-1];
135                 snakey[i] = snakey[i-1];
136             }
137             if(fx == "R") {
138                 snakex[0] = snakex[0]+25;
139                 if(snakex[0] > 850)snakex[0] = 25;
140             }else if(fx == "L") {
141                 snakex[0] = snakex[0]-25;
142                 if(snakex[0] < 25)snakex[0] = 850;
143             }else if(fx == "U") {
144                 snakey[0] = snakey[0]-25;
145                 if(snakey[0] < 75)snakey[0] = 650;
146             }else if(fx == "D") {
147                 snakey[0] = snakey[0]+25;
148                 if(snakey[0] > 650)snakey[0] = 75;
149             }
150                 
151             if(snakex[0] == foodx && snakey[0] == foody) {
152                 len++;
153                 score = score + 10;
154                 foodx = 25 + 25 * rand.nextInt(34);
155                 foody = 75 + 25 * rand.nextInt(24);
156             }
157             
158             for(int i=1; i<len; i++) {
159                 if(snakex[i] == snakex[0] && snakey[i] == snakey[0]) {
160                     isFailed = true;
161                 }
162             }
163             
164             repaint();
165         }
166         
167         timer.start();
168     }
169 }

 1 package moonsnake;
 2 
 3 import javax.swing.JFrame;
 4 
 5 public class Msnake {
 6 
 7     public static void main(String[] args) {
 8         JFrame frame = new JFrame();
 9         frame.setBounds(10, 10, 900, 720);
10         frame.setResizable(false);
11         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
12         frame.add(new MPanel());
13         
14         frame.setVisible(true);
15 
16     }
17 
18 }