贪吃蛇Java程序代码.doc

/文件一package greedysnake_cx;public class Node int x=0; int y=0; int nodewidth; int nodeheight; Node(int x,int y) this.x=x; this.y=y; /文件二package greedysnake_cx;/* * 实现一个greedysnake的模型，具有功能： * 1）移动，moveOn（）从director参数中获取方向信息，如果方向定义的下一个点的逻辑值是true，检查是不是food，是则将food添加到 * 列表的头部，snake继续移动，不是则停止移动（撞到蛇尾巴了） * 2）加速，speedUp()将现成的停滞时间间隔interval按照一定的比率 speedRate进行扩大 * 3）减速，speedDown(). * * 该类实现Runnable接口， * */定义snake的模型import java.util.*;import javax.swing.*;public class SnakeModel implements Runnable private GreedSnake gs; /给每一个矩阵点确立一个boolean值 boolean matrix; private int maxX; private int maxY; /设置一个节点的列表； LinkedList nodeArray = new LinkedList(); Node food=null; int direction=UP; int score=0; /定义方向 public final static int LEFT=1; public final static int UP=2; public final static int RIGHT=3; public final static int DOWN=4; private int interval=200; /停顿时间的间隔 boolean pause=false; /定义暂停 private double speedRate=0.5; /定义速度的变更幅度 /constructor public SnakeModel(GreedSnake gs,int maxx,int maxy) this.gs=gs; this.maxX=maxx; this.maxY=maxy; /this.matrix=null; / /init matrix; matrix=new booleanmaxX; /*不初始化是不行滴 for(int i=0;imaxX;i+) matrixi=new booleanmaxY;/将矩阵的每一行定义成列的集合 Arrays.fill(matrixi, false);/使用java.util.Arrays的static方法fill，将matrix数组里面的元素全部定义成false /至此，矩阵里面所有的点的boolean值都是flase /for(int j=0;jmaxY;j+) /matrixij=false; / / /init nodeArray int initlength=10; for(int i=0;i= 0 & x = 0 & y maxY) if(matrixxy)/当蛇头转至一个bool值为true的点时 if(x=food.x&y=food.y)/该点是食物 nodeArray.addFirst(food); /吃掉补上 food=createFood(); matrixfood.xfood.y=true; score+=10; return true; else /该点不是食物，（蛇尾巴） return false; else nodeArray.addFirst(new Node(x,y); matrixxy=true; Node nn=(Node)nodeArray.removeLast();/移除并且返回列表中的最后一个元素 matrixnn.xnn.y=false; return true; return false; /end moveOn public void run() boolean running=true; while(running) try Thread.sleep(interval); catch(InterruptedException e) e.printStackTrace(); if(!pause) if(moveOn() gs.repaint(); else JOptionPane.showMessageDialog(null, sorry myboy,GAME OVER!, message, JOptionPane.INFORMATION_MESSAGE); running=false; /*boolean running=true; while(running) try Thread.sleep(interval); catch (InterruptedException e) e.printStackTrace(); if(!pause) if(moveOn() gs.repaint(); else JOptionPane.showMessageDialog(null,i am sorry ,you failed!,message,JOptionPane.INFORMATION_MESSAGE); break; /end while running=false;/当且仅当失败退出的时候； */ /获取当前游戏得分 public int getScore() return this.score; /加速 public void speedUp() interval*=speedRate; /减速 public void speedDown() interval/=speedRate; /设置暂停 public void chagePause() pause=!pause; /设置方向 public void chageDirection(int newdirection) if(direction % 2 != newdirection % 2) direction=newdirection; /生成食物 private Node createFood() /* * 创建一个随机数的生成器，这个是java.util.Random类 * 与java.lang.Math类中的random()方法有不一样的地方，彼方法返回一个01之间的随机数 * */ Random random=new Random(); int foodx=random.nextInt(maxX); int foody=random.nextInt(maxY); Node food=new Node(foodx,foody); return food; /文件三package greedysnake_cx;/* * 在repaint()方法中，绘画上下文对象是从canvas对象使用getContentPane()获取的! * */import javax.swing.*;import java.awt.*;import java.awt.event.*;import java.util.*;public class GreedSnake implements KeyListener Canvas canvas; private JLabel jlabel; private JPanel jpanel; private JFrame jframe; SnakeModel snakemodel; private final static int canvaswidth=400; private final static int canvasheight=300; private final static int nodewidth=10; private final static int nodeheight=10; /construction GreedSnake() jframe=new JFrame(The Greed Sanke!); jframe.setLayout(new BorderLayout(); Container cp=jframe.getContentPane(); /在jframe面板中添加各种组件 jlabel=new JLabel(welcome); jlabel.setText(Welcome my friend! Enjoy your self!); cp.add(jlabel,BorderLayout.NORTH); canvas=new Canvas(); canvas.setSize(canvaswidth,canvasheight); canvas.addKeyListener(this); /给空白面板添加键盘时间监听器！ cp.add(canvas,BorderLayout.CENTER); jpanel=new JPanel(); jpanel.setLayout(new BorderLayout(); JLabel label=new JLabel(Pass enter or r or s to start,JLabel.CENTER); jpanel.add(label,BorderLayout.NORTH); JLabel label2=new JLabel(Pass space to pause this game!,JLabel.CENTER); jpanel.add(label2,BorderLayout.CENTER); JLabel label3=new JLabel(Pass pageUp or pageDown to up or down the speed of the snake!,JLabel.CENTER); jpanel.add(label3,BorderLayout.SOUTH); cp.add(jpanel,BorderLayout.SOUTH); /给顶层容器设置时间监听、可视化、关闭按钮的设定 jframe.addKeyListener(this); jframe.pack(); jframe.setVisible(true); jframe.setResizable(false); jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); begin(); /end construction public void begin() /开启一个SnakeModel的进程,并且开始改进程 snakemodel=new SnakeModel(this,canvaswidth/nodewidth,canvasheight/nodeheight); (new Thread(snakemodel).start(); void repaint() int score=snakemodel.getScore(); jlabel.setText(您的得分是：+score); Graphics g=canvas.getGraphics();/pay attention! g.setColor(Color.white); g.fillRect(0, 0, canvaswidth, canvasheight); g.setColor(Color.blue); LinkedList list=snakemodel.nodeArray; for(int i=0;ilist.size();i+) Node nn=(Node)list.get(i); paintingNode(g,nn); /绘制food g.setColor(Color.green); Node foodnode=new Node(snakemodel.food.x,snakemodel.food.y); paintingNode(g,foodnode); public void paintingNode(Graphics gg,Node n) /* * 使用Graphics 的fillRect方法，填充一个矩形， * 矩形的起点需要乘以一个NODE的长宽，以避免重叠 * */ gg.fillRect(n.x*nodewidth, n.y*nodeheight,nodewidth-1,nodeheight-1); public void keyPressed(KeyEvent e) /按下某一个键时，调用此方法 int keycode=e.getKeyCode(); /* if(keycode=KeyEvent.VK_ENTER|keycode=KeyEvent.VK_R) begin(); */ switch(keycode) case KeyEvent.VK_LEFT: snakemodel.chageDirection(SnakeModel.LEFT); break; case KeyEvent.VK_UP: snakemodel.chageDirection(SnakeMod