用JAVA写的贪食蛇游戏

 

 

Snake类主体:

 

import javax.swing.*;import java.awt.event.*;import java.util.*;import java.awt.*;public class SnakePanel extends JPanel implements Runnable {final int latticeSize = 20; // 一个格的大小final int Width = 20; // 高度final int Height = 20; //宽度int score = 0; //分数int speed = 100; // 速度int num = 0; boolean runing = true; //运行状态boolean inOut = true;int snake_x = 1; //蛇的X坐标int snake_y = 1; //蛇的Y坐标int food_x,food_y; // 食物X/Y坐标Random r = new Random(); //随机涵数enum direction{up,down,left,right}; //枚举方向direction dir = direction.right; //方向初始化为右Thread thread = new Thread(this); //定义线程LinkedList<Node> node = new LinkedList<Node>(); public SnakePanel(){setFocusable(true); //焦点for(int i=0;i<3;i++){ //初始化蛇长度为3node.addFirst(new Node(snake_x++,snake_y));}food_x = r.nextInt(20); //随机0~20之间的X坐标food_y = r.nextInt(20); //随机0~20之间的Y坐标addKeyListener(new KeyAdapter(){ //事件监听键盘public void keyPressed(KeyEvent e) {switch(e.getKeyCode()){case KeyEvent.VK_UP:if( dir != direction.down ){ //判断是否为相反方向dir = direction.up;}break;case KeyEvent.VK_DOWN:if( dir != direction.up ){dir = direction.down;}break;case KeyEvent.VK_LEFT:if( dir != direction.right ){dir = direction.left;}break;case KeyEvent.VK_RIGHT:if( dir != direction.left ){dir = direction.right;}break;case KeyEvent.VK_F5: // 开始/重新开始if(inOut && num == 0){thread.start(); //线程开始num++;}else if(!inOut && num == 1){snake_x = 1; snake_y = 1; food_x = r.nextInt(20); food_y = r.nextInt(20); dir = direction.right;node.clear();score = 0;for(int i=0;i<3;i++){ node.addFirst(new Node(snake_x++,snake_y));}inOut = true;}break;case KeyEvent.VK_ENTER:if(inOut){ //暂停/继续inOut = false;}else{ inOut = true; }break;case KeyEvent.VK_ESCAPE :System.exit(0); //按Esc退出游戏break;case KeyEvent.VK_ADD:if(speed != 10){speed = speed - 10;}break;case KeyEvent.VK_SUBTRACT:speed = speed + 10;break;}}});}public void run(){try{while(runing){if(inOut){switch(dir){case up:node.removeLast(); //删除蛇链表最后一个snake_y--;break;case down:node.removeLast();snake_y++;break;case left:node.removeLast();snake_x--;break;case right:node.removeLast();snake_x++;break;}node.addFirst(new Node(snake_x,snake_y));//往蛇头插入 移动法eatFood(); //调用吃东西方法repaint(); //重绘所有if( snake_x<0 || snake_y<0 || snake_x >= Width || snake_y >= Height ){//判断蛇是否出界JOptionPane.showMessageDialog(null,"游戏结束");inOut = false; //停止运行}int i = 0;Iterator it = node.iterator();while( it.hasNext() ){Node n = node.getFirst();int x = n.x;int y = n.y; n = (Node)it.next();if( i>3 ){if(n.x == x && n.y == y ){ //判断是否咬到自己JOptionPane.showMessageDialog(null,"游戏结束");inOut = false; //停止运行break;}}i++;}thread.sleep(speed); //间隔100毫秒的速度}}}catch(InterruptedException e){} } public void eatFood(){if( food_x == snake_x && food_y == snake_y ){ //判断是否吃到食物score = score + 10;food_x = r.nextInt(20);food_y = r.nextInt(20);node.addFirst(new Node(snake_x,snake_y)); //添加蛇的长度}}public void paintComponent(Graphics g){//画笔g.setColor(Color.black);g.fillRect(0,0,Width*latticeSize,Height*latticeSize); //刷新画版g.setColor(Color.red);g.drawString("分数:"+score+"速度 = "+speed,5,15);g.fill3DRect(food_x*latticeSize,food_y*latticeSize,latticeSize,latticeSize,true); //画食物Iterator it = node.iterator(); //得到node链表的itertorwhile( it.hasNext()){ //循环判断链表下一个是否存在Node n = (Node)it.next(); //移动链表指针到下一个if(n != null ){//判断是否存在g.setColor(Color.green);g.fill3DRect(n.x*latticeSize,n.y*latticeSize,latticeSize,latticeSize,true); //画蛇}}}}class Node{int x;int y;public Node(int x, int y){this.x = x;this.y = y;}}

 

JFrame类,加载调用Snake类.

 

 import javax.swing.*;import java.awt.*;public class SnakeStart extends JFrame {SnakePanel snake = new SnakePanel();Label la = new Label(" F5: 开始/重新开始游戏回车: 暂停/继续Esc: 退出游戏 + 快 - 慢");int width;int height;public SnakeStart(){super("贪食蛇");width = snake.latticeSize*snake.Width; //得到宽度height = snake.latticeSize*snake.Height; //得到高度setBounds(200,200,width,height+23); //设置窗口的位置和大小add(snake,BorderLayout.CENTER); //把Snake类添加到JFrame的CENTER区la.setAlignment(Label.CENTER); //设置JLabel文字为居中la.setBackground(Color.DARK_GRAY); //设置JLabel的背景颜色la.setForeground(Color.orange); //设置JLabel的前景颜色add(la,BorderLayout.NORTH); //把JLabel添加至JFrame的NORTH区setUndecorated(true); //设置JFrame窗口为无标题窗口setResizable(false); //设置JFrame窗口不可改变大小setVisible(true); //设置JFrame窗口可见为True;}public static void main(String[] args){new SnakeStart(); //实例窗口,开始构造涵数`执行程序.}}