greedysnake.java

贪吃蛇

package com.snake;
import java.awt.*;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;
import java.util.Vector;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.swing.JOptionPane;
import javax.swing.JTable;

/**
 * 
 * @author 陈剑龙
 * 
 */
public class GreedySnake extends Frame {
	
	public static final int GAME_WIDTH = 510; //蛇运动的宽度
	public static final int GAME_HEIGHT = 616;//蛇运动的高度
	public static int speed = 250;
	public static boolean pause = false;
	public static boolean over = false;	
	public static int score = 0;
	
	private Panel controlPanel = new Panel();
	
	
	Image offScreenImage = null;
	
	List<Node> snakeList = null;
	List<String> list = new ArrayList<String>();
	Node n = null;
	Snake snake = null;
	Node food = null;
	Thread thread = null;
	
	Label titleLabel = new Label("贪吃蛇游戏说明");
	Label scoreLabel = new Label("你的得分为:" + score + "    ");
	Label speedLabel = new Label("   你的速度为:5       ");
	Label rangeLabel = new Label("             高 分 排 名 榜                ");
	TextArea describeArea = new TextArea("", 13, 30, 3);
	TextArea rangeArea = new TextArea("", 11, 30, 3);
	
	public void initSnake() {
		snake = new Snake(Dir.L, this);
		pause = false;
		over = false;
		speed = 250;
		score = 0;
		snakeList = new ArrayList<Node>();
		createSnake(5);//初始化贪吃蛇
		food = Node.createFood(snakeList);//初始化食物	
		thread = new Thread(new PaintThread());
		thread.start();
	}
	
	public void initPanel() {
		titleLabel.setFont(new Font("楷体",Font.BOLD, 18));	
		scoreLabel.setFont(new Font("楷体",Font.BOLD, 18));	
		speedLabel.setFont(new Font("楷体",Font.BOLD, 18));
		rangeLabel.setFont(new Font("楷体",Font.BOLD, 18));
		describeArea.setFont(new Font("楷体",Font.BOLD, 13));
		rangeArea.setFont(new Font("楷体",Font.BOLD, 13));
		describeArea.setEnabled(false);
		rangeArea.setEnabled(false);
		describeArea.setText("1.学校:桂林电子科技大学\n"+
				"\n2.学院:计算机与控制学院06级\n" + 
				"\n3.专业:软件工程\n" + 
				"\n4.姓名:陈剑龙\n" +
				"\n5.PageUp加速,上限速度为9\n" +
				"\n5.PageDown减速,下限速度为1\n" + 
				"\n7.P键或者空格键暂停\n" +
				"\n8.R键重新开始,方向键改变方向\n" + 
				"\n9.每吃一食物就加100分\n" );
		controlPanel.setBackground(Color.YELLOW.darker());	
		
		controlPanel.add(titleLabel);
		controlPanel.add(describeArea);
		controlPanel.add(scoreLabel);
		controlPanel.add(speedLabel);
		controlPanel.add(rangeLabel);
		controlPanel.add(rangeArea);	
	}
	
	public void readScore() {
		try {
			InputStream input = GreedySnake.class.getClassLoader().getResourceAsStream("score/score.txt");
			BufferedReader buf = new BufferedReader(new InputStreamReader(input));			
			String temp = null;				
			while((temp = buf.readLine()) != null) {				
				String[] tempString = temp.split("[ \r]+");
				for(int i=0; i<tempString.length; i++) {
					list.add(tempString[i]);
				}					
			}	
			updateRangeArea();  //更新排分榜
			input.close();
			buf.close();
		}catch(Exception e){e.printStackTrace();}
	}
	public GreedySnake() {		
		this.setLocation(350, 200);
		this.setSize(GAME_WIDTH + 250, GAME_HEIGHT);
		this.setTitle("贪吃蛇");		
		this.addWindowListener(new WindowAdapter() {
			
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
			public void windowActivated(WindowEvent e) {				
				repaint();
			}			
		});	
		this.setIconImage(Toolkit.getDefaultToolkit().getImage(GreedySnake.class.getClassLoader().getResource("image/snake.gif")));
		initPanel(); //初始化控制面板
		this.setLayout(null);
		this.add(controlPanel);
		controlPanel.setBounds(GAME_WIDTH, 28, 250, GAME_HEIGHT);
		this.setResizable(false);		
		this.setVisible(true);
		this.addKeyListener(new KeyMonitor());
		initSnake(); //初始化参数		
		readScore();
	}
	public void paint(Graphics g) {
		Color c = g.getColor();
		g.setColor(Color.green);
		for(int x=3; x<GAME_WIDTH; x+=11) {   //绘制方格
			for(int y=29; y<GAME_HEIGHT; y+=11) {
				g.drawLine(x, y, x + GAME_WIDTH, y);
				g.drawLine(x, y, x, y + GAME_HEIGHT);
			}
		}		
		snake.eatFood(snakeList, food);
		food.draw(g);
		snake.move(snakeList); //开始移动蛇		
		for(int i=0; i<snakeList.size(); i++) {
			n = snakeList.get(i);			
			if(true == n.collidesWithSnake(snakeList)) { //判断是否撞到自身			
				over = true;	
			}
			n.draw(g);
		}		
		g.setColor(c);
	}
	/**
	 * 实现双缓冲,消除闪烁
	 */
	public void update(Graphics g) {
		
		if (offScreenImage == null) {
			offScreenImage = this.createImage(GAME_WIDTH, GAME_HEIGHT);
		}
		Graphics gOffScreen = offScreenImage.getGraphics();
		Color c = gOffScreen.getColor();
		gOffScreen.setColor(Color.BLACK.darker());
		gOffScreen.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
		gOffScreen.setColor(c);		
		paint(gOffScreen);
		g.drawImage(offScreenImage, 0, 0, null);
	}
	/**
	 * 内部类实现线程
	 */
	private class PaintThread implements Runnable {

		public void run() {
			
			while (true) {				
				if(true == pause) continue; //达到暂停作用				
				if(true == over) {							
					gameOver();//结束游戏
					return;
				}	
				repaint();		
				try {					
					Thread.sleep(speed);
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	}
	/**
	 * 
	 * 重新开始贪吃蛇游戏
	 */
	public void restart() {	
		
		if(thread != null) {
			thread.stop();
		}
		initSnake();//重新进行初始化		
	}	
	/**
	 * 排序
	 */
	private void sortArray(int [] array) {
		for(int i=0; i<array.length; i++)
			for(int j=i+1; j<array.length; j++) {
				if(array[i] <= array[j]) {
					int temp = array[i];
					array[i] = array[j];
					array[j] = temp;
					Collections.swap(list, 3 * i + 1, 3 * j + 1);
					Collections.swap(list, 3 * i, 3 * j);
				}
			}		
	}
	/**
	 * 更新排分榜
	 */
    private void updateRangeArea() {
    	rangeArea.setText("");
    	rangeArea.append("昵称 分数 名次");
    	int length = list.size();
    	if(length >= 39)  { //最多只显示前面的13名
    		length = 39;
    	}
    	for(int i=0; i<length; i++) {
    		if(i%3 == 0) rangeArea.append("\n");
    		rangeArea.append(list.get(i) + " ");
    	}    	
    }   
	/**
	 * 游戏结束
	 */
	private void gameOver() {
		JOptionPane.showMessageDialog(this, "游戏结束!","系统温馨提示",JOptionPane.INFORMATION_MESSAGE);
	    String name = "无名";
	    try {
	    	name = JOptionPane.showInputDialog(this, "请输入你的昵称");	    	
	    }catch(Exception e) {
	   	e.printStackTrace();
	   }
	    finally {
	    	if(name.trim().length() == 0) name = "无名";
	    	list.add(name);
	    	list.add("" + score);
	    	list.add("" + (list.size() / 3 + 1));	    	
	    	int [] scoreArray = new int[list.size() / 3];
	    	for(int i=0; i<scoreArray.length; i++) 
	    		scoreArray[i] = Integer.parseInt(list.get(3 * i + 1));	 
	    	sortArray(scoreArray);
	    	updateRangeArea(); //更新排名榜
	    }
	}
	/**
	 * 键盘事件处理的内部类
	 */
	private class KeyMonitor extends KeyAdapter {
		
		public void keyPressed(KeyEvent e) {
			snake.keyPressed(e);
		}

	}
	/**
	 * 创建蛇身结点
	 * @param length = 产生的结点数
	 */
	public void createSnake(int length) {
		int x = GAME_WIDTH / 2 + 2;
		int y = GAME_HEIGHT / 2 - 3;
		int temp = 0;
		for(int i=0; i<length; i++) {
			Node n = new Node(x + temp, y);
			temp += Node.WIDTH + 1;
			snakeList.add(n);
		}
	}
	public static void main(String args[]) {
		new GreedySnake();
	}	
}