Snake补充可移动代码

yy852

Yard添加。。。

[Java] 纯文本查看 复制代码

import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;



public class Yard extends Frame {

	public static final int ROWS = 30;
	public static final int COLS = 30;
	public static final int BLOCK_SIZE = 15;
	Snake s = new Snake();
	public void launch() {
		this.setLocation(300,300);
		this.setSize(COLS*BLOCK_SIZE,ROWS*BLOCK_SIZE);
		this.setVisible(true);
		addWindowListener(new WindowAdapter() {

			@Override
			public void windowClosing(WindowEvent e) {
				System.exit(0);
			}
			
		});
		new Thread(new paintTread()).start();    //线程
	}
	
	Image offScreenImage = null;;//双缓冲  取消闪烁
	
	public static void main(String[] args) {
		new Yard().launch();
	}
	
	@Override
	public void paint(Graphics g) {
		Color c = g.getColor();
		g.setColor(Color.GRAY);
		g.fillRect(0, 0, COLS*BLOCK_SIZE, ROWS*BLOCK_SIZE);
		g.setColor(Color.DARK_GRAY);
		for(int i=1;i<ROWS;i++) {
			g.drawLine(0, BLOCK_SIZE*i, COLS*BLOCK_SIZE, BLOCK_SIZE*i);
		}
		for(int i=1;i<COLS;i++) {
			g.drawLine(BLOCK_SIZE*i, 0, BLOCK_SIZE*i, ROWS*BLOCK_SIZE);
		}
		g.setColor(c);
		s.draw(g);
	}
	
	@Override
	public void update(Graphics g) {                 //update
		if(offScreenImage == null) {
			offScreenImage = this.createImage(COLS*BLOCK_SIZE,ROWS*BLOCK_SIZE);
		}
		Graphics gOff = offScreenImage.getGraphics();
		paint(gOff);
		g.drawImage(offScreenImage, 0, 0, null);
	}
	
	private class paintTread implements Runnable { //线程

		@Override
		public void run() {
			while(true) {
				repaint();
				try {
					Thread.sleep(50);
				} catch(InterruptedException e) {
					e.printStackTrace();
				}
			}			
		}
		
	}
	private class KeyMonitor extends KeyAdapter {

		@Override
		public void keyPressed(KeyEvent e) {
			s.KeyPressed(e);
		}
		
	}
	

}

Snake添加。。。。

[Java] 纯文本查看 复制代码

import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;



public class Snake {
	private Node head = null;
	private Node tail = null;
	private int size = 0;
	
	private Node n = new Node(20,5,Dir.L);
	
	public Snake() {
		head = n;
		tail = n;
		size = 1;
	}
	
	public void addToTail() {
		Node node = null;
		switch (tail.dir) {
		case L:
			node = new Node(tail.row,tail.col+1,tail.dir);
			break;
		case U:
			node = new Node(tail.row+1,tail.col,tail.dir);
			break;
		case R:
			node = new Node(tail.row,tail.col-1,tail.dir);
			break;
		case D:
			node = new Node(tail.row-1,tail.col,tail.dir);
			break;
		}
		tail.next = node;
		node.prev = tail;
		tail = node;
		size ++;
	}
	
	public void addToHead() {
		Node node = null;
		switch(head.dir) {
		case L:
			node = new Node(head.row,head.col-1,head.dir);
			break;
		case U:
			node = new Node(head.row-1,head.col,head.dir);
			break;
		case R:
			node = new Node(head.row,head.col+1,head.dir);
			break;
		case D:
			node = new Node(head.row+1,head.col,head.dir);
			break;
		
		}
		node.next = head;
		head.prev = node;
		head = node;
		size++;
	}
	
	public void draw(Graphics g) {
		if(size <= 0) return ;
		move();     ///
		for(Node n = head; n != null; n = n.next) {
			n.draw(g);
		}
	}
	 
	private void move() {                //
		addToHead();
		deleteFromTail();
		
		
	}

	private void deleteFromTail() {              //
		if(size == 0) return ;
		tail = tail.prev;
		tail.next = null;
		
	}

	public class Node {
		int w = Yard.BLOCK_SIZE;
		int h = Yard.BLOCK_SIZE;
		int row,col;
		Dir dir = Dir.L;
		Node next = null;
		Node prev = null;    //
		
		Node(int row, int col, Dir dir) {
			this.row = row;
			this.col = col;
			this.dir = dir;
		}
		void draw(Graphics g) {
			Color c = g.getColor();
			g.setColor(Color.BLACK);
			g.fillRect(Yard.BLOCK_SIZE*col, Yard.BLOCK_SIZE*row, w, h);
			g.setColor(c);
		}
	}

	public void KeyPressed(KeyEvent e) {                    //键盘控制
		int key = e.getKeyCode();
		switch (key) {
		case KeyEvent.VK_LEFT:
			head.dir = Dir.L;
			break;
		case KeyEvent.VK_UP:
			head.dir = Dir.U;
			break;
		case KeyEvent.VK_RIGHT:
			head.dir = Dir.R;
			break;
		case KeyEvent.VK_DOWN:
			head.dir = Dir.D;
			break;
		}
		
	}
	
}