简单实现贪吃蛇

[java]代码库

package com.tcs;

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, 0, WIDTH, 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, 0, 0, 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, y, 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, y, width, height);

	}

	public Rectangle getRect() {

		return new Rectangle(x, y, width, 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, nodeTempNode.y);

			}

			nodes.add(0, 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, new Node(nodeTempNode.x, nodeTempNode.y

			+ nodeTempNode.height));

			break;

		}

	}

}