本文實(shí)例為大家分享了java編寫的貪吃蛇源碼，供大家參考，具體內(nèi)容如下

程序共包含以下兩個(gè)文件：

文件:ShellWin.java

import java.awt.Color;import java.awt.Dimension;import java.awt.FlowLayout;import java.awt.Graphics;import java.awt.event.*;import javax.swing.Box;import javax.swing.JButton;import javax.swing.JOptionPane;import javax.swing.JPanel;@SuppressWarnings('serial')public class ShellWin extends JPanel implements Runnable{ //實(shí)現(xiàn)了鍵盤與鼠標(biāo)兩個(gè)接口 int direction; int length; int score=0; boolean control=false; int[] xs=new int[400]; //蛇的個(gè)數(shù)，xy,坐標(biāo)控制 int[] ys=new int[400]; int douX;int douY; Thread thread; public ShellWin() { setPreferredSize(new Dimension(600, 600)); setLocation(100, 100); setBackground(Color.GREEN); thread=new Thread(this); //為這個(gè)類添加一個(gè)線程 create_snake(); create_bean(); } public void paintComponent(Graphics g) //繪制 { super.paintComponent(g); //Jpanel內(nèi)的方法，起到清屏的作用 g.drawString('分?jǐn)?shù):'+score, 50, 50); g.drawRect(0,0, 600, 600); show_snake(g); show_bean(g); } //能不能吃豆，能不能死 void die() { JOptionPane.showMessageDialog(null, 'game over', '游戲結(jié)束', JOptionPane.ERROR_MESSAGE); } void eat() { length++; this.score+=100; create_bean(); } boolean out_bounds() { if(xs[0]==-10||xs[0]==600||ys[0]==-10||ys[0]==600) //出界即死 { return true; } return false; } void change_direction(int new_direction) //控制方向 { if(direction%2!=new_direction%2||direction==0) // 2 4 3 1 上下左右 { direction=new_direction; } } boolean eat_self() { for (int i = 1; i < length; i++) { if(xs[0]==xs[i]&&ys[0]==ys[i]) { return true; } } return false; } boolean can_eat() { if(xs[0]==douX&&ys[0]==douY) { return true; } return false; } void create_snake() { direction=0;length=5; for (int i = 0; i < length; i++) { xs[i]=400; ys[i]=400+10*i; } } void create_bean() { douX=10*(int)(Math.random()*60); douY=10*(int)(Math.random()*60); for (int i = 0; i < length; i++) { if(xs[i]==douX&&ys[i]==douY) { create_bean(); return; } } } void show_bean(Graphics g) //仍然得要寫入到paintComponent方法內(nèi) { g.setColor(Color.RED); g.fillOval(douX, douY, 10, 10); } void crawl() { if(direction!=0) for (int i = length-1; i >0; i--) { // 2 4 3 1 上下左右 xs[i]=xs[i-1]; //后一個(gè)替代前一個(gè) 4=3； ys[i]=ys[i-1]; } switch (direction) { case 1: xs[0]=xs[0]+10; break; case 2: ys[0]=ys[0]-10; break; case 3: xs[0]=xs[0]-10; break; case 4: ys[0]=ys[0]+10; break; default: break; } } void show_snake(Graphics g) { for (int i = 0; i < length; i++) { g.setColor(Color.BLUE); if(i==0){ g.drawOval(xs[i], ys[i], 10, 10); continue; } g.drawRect(xs[i], ys[i], 10, 10); //蛇的長度與大小 } } @Override public void run() { while(control) { try {if(can_eat()) { eat(); } if(out_bounds()) { die(); return; } if(eat_self()) { die(); return; } crawl(); Thread.sleep(200); repaint(); } catch (InterruptedException e) { e.printStackTrace(); } } }class panel extends JPanel implements ActionListener,KeyListener{ JButton startGame=new JButton('開始'); JButton stopGame=new JButton('停止'); Box box1; //盒式布局 panel(){ setLayout(new FlowLayout()); box1=Box.createHorizontalBox(); box1.add(startGame); box1.add(Box.createHorizontalStrut(2)); box1.add(stopGame); setSize(800,800); setBackground(Color.black); addKeyListener(this); //為ShellWin 對象注冊一個(gè)偵聽器 startGame.addActionListener(this); //為開始按鈕添加偵聽器，this指代的是Actionistener這個(gè)類所創(chuàng)建的對象 stopGame.addActionListener(this); //為結(jié)束按鈕添加偵聽器，this指代的是Actionistener這個(gè)類所創(chuàng)建的對象 } @Override public void actionPerformed(ActionEvent e) { if(e.getSource()==startGame) { this.requestFocus(); //將光標(biāo)添加到該控件中 control=true; thread.start(); //線程開始 //*********************************** this.repaint(100,100, 600, 600); } if(e.getSource()==stopGame) { this.requestFocus(); //將光標(biāo)添加到該控件中 control=false; //線程結(jié)束 } } @Override public void keyPressed(KeyEvent e) { switch (e.getKeyCode()) { case KeyEvent.VK_UP: change_direction(2); break; case KeyEvent.VK_DOWN: if(direction!=0) change_direction(4); break; case KeyEvent.VK_LEFT: change_direction(3); break; case KeyEvent.VK_RIGHT: change_direction(1); break; default: break; } } @Override public void keyReleased(KeyEvent e) { // TODO Auto-generated method stub } @Override public void keyTyped(KeyEvent e) { // TODO Auto-generated method stub } }}

文件:ShellMain.java

import javax.swing.Box;import javax.swing.JFrame;@SuppressWarnings('serial')public class ShellMain extends JFrame { ShellWin win=new ShellWin(); ShellWin.panel pan=win.new panel(); Box box,box2; ShellMain(){ box2=Box.createHorizontalBox(); box2.add(win); box=Box.createVerticalBox(); box.add(pan.box1); box.add(Box.createVerticalStrut(8)); box.add(box2); pan.add(box); setTitle('貪吃蛇'); setSize(800,800); setVisible(true); setLayout(null); add(pan); setLocation(0,0); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public static void main(String[] args) { new ShellMain(); }}

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