java贪食蛇 极速不死版

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import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.image.BufferedImage;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JFrame;

/**
 * @url http://download.csdn.net/detail/leasystu/4308246
 * 
 * @author Easy
 */
public class InterFace extends JFrame {
	public static final int WIDTH = 800,HEIGHT = 600,SLEEPTIME = 20,L = 1,R = 2,U = 3,D = 4;
	BufferedImage offersetImage = new BufferedImage(WIDTH,HEIGHT,BufferedImage.TYPE_3BYTE_BGR);;
	Rectangle rect = new Rectangle(20,40,15 * 50,15 * 35);
	Snake snake;
	Node node;

	public InterFace() {
		snake = new Snake(this);
		createNode();
		this.setBounds(100,100,WIDTH,HEIGHT);
		this.addKeyListener(new KeyAdapter() {
			public void keyPressed(KeyEvent arg0) {
				System.out.println(arg0.getKeyCode());
				switch (arg0.getKeyCode()) {
				case KeyEvent.VK_LEFT:
					snake.dir = L;
					break;
				case KeyEvent.VK_RIGHT:
					snake.dir = R;
					break;
				case KeyEvent.VK_UP:
					snake.dir = U;
					break;
				case KeyEvent.VK_DOWN:
					snake.dir = D;
				}
			}
		});
		this.setTitle("贪吃蛇 0.1   By ： Easy");
		this.setDefaultCloSEOperation(EXIT_ON_CLOSE);
		this.setVisible(true);
		new Thread(new ThreadUpadte()).start();
	}

	public void paint(Graphics g) {
		Graphics2D g2d = (Graphics2D) offersetImage.getGraphics();
		g2d.setColor(Color.white);
		g2d.fillRect(0,HEIGHT);
		g2d.setColor(Color.black);
		g2d.drawRect(rect.x,rect.y,rect.width,rect.height);
		if (snake.hit(node)) {
			createNode();
		}
		snake.draw(g2d);
		node.draw(g2d);
		g.drawImage(offersetImage,null);
	}

	class ThreadUpadte implements Runnable {
		public void run() {
			while (true) {
				try {
					Thread.sleep(SLEEPTIME);
					repaint();
				} catch (InterruptedException e) {
					e.printStackTrace();
				}
			}
		}
	}

	public void createNode() {
		int x = (int) (Math.random() * 650) + 50,y = (int) (Math.random() * 500) + 50;
		Color color = Color.blue;
		node = new Node(x,y,color);
	}

	public static void main(String args[]) {
		new InterFace();
	}
}

class Node {
	int x,width = 15,height = 15;
	Color color;

	public Node(int x,int y,Color color) {
		this(x,y);
		this.color = color;
	}

	public Node(int x,int y) {
		this.x = x;
		this.y = y;
		this.color = color.black;
	}

	public void draw(Graphics2D g2d) {
		g2d.setColor(color);
		g2d.drawRect(x,width,height);
	}

	public Rectangle getRect() {
		return new Rectangle(x,height);
	}
}

class Snake {
	public List<Node> nodes = new ArrayList<Node>();
	InterFace interFace;
	int dir = InterFace.R;

	public Snake(InterFace interFace) {
		this.interFace = interFace;
		nodes.add(new Node(20 + 150,40 + 150));
		addNode();
	}

	public boolean hit(Node node) {
		for (int i = 0; i < nodes.size(); i++) {
			if (nodes.get(i).getRect().intersects(node.getRect())) {
				addNode();
				return true;
			}
		}
		return false;
	}

	public void draw(Graphics2D g2d) {
		for (int i = 0; i < nodes.size(); i++) {
			nodes.get(i).draw(g2d);
		}
		move();
	}

	public void move() {
		nodes.remove((nodes.size() - 1));
		addNode();
	}

	public synchronized void addNode() {
		Node nodeTempNode = nodes.get(0);
		switch (dir) {
		case InterFace.L:
			if (nodeTempNode.x <= 20) {
				nodeTempNode = new Node(20 + 15 * 50,nodeTempNode.y);
			}
			nodes.add(0,new Node(nodeTempNode.x - nodeTempNode.width,nodeTempNode.y));
			break;
		case InterFace.R:
			if (nodeTempNode.x >= 20 + 15 * 50 - nodeTempNode.width) {
				nodeTempNode = new Node(20 - nodeTempNode.width,new Node(nodeTempNode.x + nodeTempNode.width,nodeTempNode.y));
			break;
		case InterFace.U:
			if (nodeTempNode.y <= 40) {
				nodeTempNode = new Node(nodeTempNode.x,40 + 15 * 35);
			}
			nodes.add(0,new Node(nodeTempNode.x,nodeTempNode.y
					- nodeTempNode.height));
			break;
		case InterFace.D:
			if (nodeTempNode.y >= 40 + 15 * 35 - nodeTempNode.height) {
				nodeTempNode = new Node(nodeTempNode.x,40 - nodeTempNode.height);
			}
			nodes.add(0,nodeTempNode.y
					+ nodeTempNode.height));
			break;
		}
	}
}

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