Java 贪吃蛇源码

package langxisnake; import java.awt.Color; import java.awt.Font; import java.awt.Graphics; import java.awt.Image; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import javax.swing.JFrame; import javax.swing.JPanel; public class Yard extends JFrame/*JPanel*/{ public static final int ROWS=30; public static final int COLS=30; public static final int BLOCK_SIZE=15; PaintThread paintThread=new PaintThread(); private boolean gameOver=false; private int score=0; public int getScore() { return score; } public void setScore(int score) { this.score = score; } Snake snake=new Snake(this); Egg e=new Egg(); Image offScreenImage=null;//双缓冲---解决闪动问题（刷背景） @Override public void update(Graphics g) { // TODO Auto-generated method stub if(offScreenImage==null){ offScreenImage=this.createImage(COLS*BLOCK_SIZE,ROWS*BLOCK_SIZE); } Graphics gOff=offScreenImage.getGraphics(); paint(gOff); g.drawImage(offScreenImage,0,0,null); } public void launch(){ this.setLocation(300,100); this.setSize(COLS*BLOCK_SIZE,ROWS*BLOCK_SIZE); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); /* * 处理关闭的窗口的函数 * this.addWindowListener(new WindowAdapter(){ * System.exit(0); * }) */; this.setVisible(true); this.addKeyListener(new KeyNonitor());//注册监听 // new Thread (new PaintThread()).start(); new Thread(paintThread).start(); } public void stop(){ gameOver=true; } public static void main(String[] args) { /* JFrame frame=new JFrame(); Yard y=new Yard(); y.launch(); frame.add(y); // frame.pack(); frame.setBounds(300, 100, COLS*BLOCK_SIZE+10, ROWS*BLOCK_SIZE+10); frame.setVisible(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);*/ new Yard().launch(); } @Override public void paint(Graphics g) {//画小格 Color c=g.getColor(); g.setColor(Color.gray); g.fillRect(0, 0, COLS*BLOCK_SIZE,ROWS*BLOCK_SIZE); g.setColor(Color.DARK_GRAY); //画出横线 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(Color.YELLOW); g.drawString("Score:"+score, 10, 60); if(gameOver){ g.setFont(new Font("宋体",Font.BOLD|Font.HANGING_BASELINE,50)); g.drawString("Game over！", 100, 250); paintThread.gameOver(); } g.setColor(c); snake.eat(e); snake.draw(g); e.draw(g); } private class PaintThread implements Runnable{ private boolean running=true; @Override public void run() { while(running){ repaint(); try{ Thread.sleep(300); }catch(InterruptedException e){ e.printStackTrace(); } } } public void gameOver(){ running=false; } } private class KeyNonitor extends KeyAdapter{ @Override public void keyPressed(KeyEvent e) { snake.keyPressed(e); } } }