贪吃蛇

帧：如果时间片足够小，就是动画，一秒30帧。连起来动画，拆开就是静态的图片。
键盘监听：
定时器Timer
回去补图excel表格上画蛇的截图

---

放图片可以放在跟目录下，也可以放在当前目录下
public class Data {
//absolute path start with /,current project, relative path
public static URL headerUrl = Data.class.getResource("/statics/head.png");
public static ImageIcon header = new ImageIcon(headerUrl);

public static URL upUrl = Data.class.getResource("/statics/up.png");
public static URL downUrl = Data.class.getResource("/statics/down.png");
public static URL leftUrl = Data.class.getResource("/statics/left.png");
public static URL rightUrl = Data.class.getResource("/statics/right.png");
public static URL bodyUrl = Data.class.getResource("/statics/body.png");

public Data() {
	// TODO Auto-generated constructor stub
}

}

public class StartGame {

public static void main(String[] args) {
	// TODO Auto-generated method stub
		JFrame frame = new JFrame();
		
		frame.setBounds(10, 10, 900, 720);
		//size is fixed
		frame.setResizable(false);
		frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
		
		//Game should in panel
		frame.add(new GamePanel());
		
		frame.setVisible(true);

}

}

public class GamePanel extends JPanel {

// Paint panel, all the things in our game using this paint brush

@Override
protected void paintComponent(Graphics g) {
	// TODO Auto-generated method stub
	super.paintComponent(g);// clear screen
	this.setBackground(Color.black);
}

}