snakegame.java

一个小游戏 贪吃蛇 很好玩 大家下来

package com.fengbo;

import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Point;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

/**
 * 游戏主窗口
 * @author fengbo
 *
 */
public class SnakeGame extends Frame {
	//游戏窗口大小
	public static final int GAME_WIDTH = 400;
	public static final int GAME_HEIGHT = 400;
	
	Snake snake = new Snake(this);	
	
	private Image offScreeImage = null;
	
	public List<SnakeFood> foods = new ArrayList<SnakeFood>();
	
	public static void main(String[] args) {		
		new SnakeGame().launchFrame();
	}
	
	/*
	 * 画出游戏窗口，实现对游戏 窗口和键盘的监听以及启动重画线程
	 */
	public void launchFrame() {
		
		this.setBackground(Color.ORANGE);
		this.setBounds(50, 50, GAME_WIDTH, GAME_HEIGHT);
		this.setResizable(false);
		setVisible(true);
		
		//监听Window窗口
		addWindowListener(new WindowAdapter() {			
			public void windowClosing(WindowEvent e) {
				setVisible(false);
				System.exit(0);
				
			}			
		});
		
		//监听键盘
		addKeyListener(new KeyPressed());
		//实现重画
		new Thread(new RePaint()).start();
		//添加第一个SnakeFood
		SnakeFood food = new SnakeFood(200, 100, this);
		foods.add(food);
	}
	
	//实现双缓冲
	public void update(Graphics g) {
		if(offScreeImage == null) {
			offScreeImage = this.createImage(GAME_WIDTH, GAME_HEIGHT);
		}
		
		Graphics goffScree = offScreeImage.getGraphics();
		Color c = goffScree.getColor();
		goffScree.setColor(Color.ORANGE);
		goffScree.fillRect(0, 0, GAME_WIDTH, GAME_HEIGHT);
		goffScree.setColor(c);
		paint(goffScree);
		g.drawImage(offScreeImage, 0, 0, null);
	}
	
	/*
	 * 画出贪吃蛇以及蛇食
	 * (non-Javadoc)
	 * @see java.awt.Container#paint(java.awt.Graphics)
	 */
	public void paint(Graphics g) {
		//在游戏窗口中打印蛇身长度和蛇食的数量
		g.drawString("SnakeFood Count : " + foods.size(), 10, 45);
		g.drawString("Snake Count : " + snake.body.size(), 10, 55);
					
		if(!snake.hitbody(snake.body)) {
			snake.draw(g);
			
		} 
		
		for(int i=0; i<foods.size(); i++) {
			SnakeFood sf = foods.get(i);
			sf.hitSnake(snake);
			sf.darw(g);
		}
		
	}
	
	//监听键盘
	public class KeyPressed extends KeyAdapter {

		public void keyPressed(KeyEvent e) {
			snake.keyPress(e);
		}		
	}
	
	//实现重画的线程
	public class RePaint implements Runnable {

		public void run() {
			while(true) {
				try {
					Thread.sleep(300);
				} catch (InterruptedException e1) {
					e1.printStackTrace();
				}
				repaint();			
			}
			
		}
		
	}
}