import java.awt.event.KeyEvent;import java.awt.event.KeyListener;import javax.swing.JFrame;package cumin.planewar;import java.awt.Color;import java.awt.Graphics;import java.awt.Image;import java.awt.Toolkit;import java.awt.event.KeyEvent;import java.awt.event.KeyListener;import javax.swing.JFrame;public class MainFrame extends JFrame {    /**     * @param args     */    public static final int FRAME_HEIGHT = 800;    public static final int FRAME_WIDIH = 480;    Image cacheImage = null;    private Image background = null;    private Image wait = null;    private Image result = null;        //手柄控制类    Handle controller = null;    /**     * 游戏窗口显示构造函数     */    public MainFrame() {        // 游戏窗口        this.setLocation(0, 0);        this.setSize(FRAME_WIDIH, FRAME_HEIGHT);        this.setDefaultCloseOperation(EXIT_ON_CLOSE);        background = Toolkit.getDefaultToolkit().createImage("res/背景.png");        wait = Toolkit.getDefaultToolkit().createImage("res/暂停界面.png");        result = Toolkit.getDefaultToolkit().createImage("res/result_t.png");        // 游戏窗口监听器        this.addKeyListener(new MyKeyListener());        // 游戏开始        this.setVisible(true);            }@Override    public void paint(Graphics g) {        if (controller.getGameState() == Handle.GAMESTATE_START)            controller.onDraw(g);        else if (controller.getGameState() == Handle.GAMESTATE_STOP) {            g.drawImage(result, FRAME_WIDIH / 2 - 160, FRAME_HEIGHT / 2 - 115, null);            g.drawString("" + controller.getScore(), FRAME_WIDIH / 2 - 10, FRAME_HEIGHT / 2);        }    }    @Override    public void update(Graphics g) {        // super.update(g);        if (cacheImage == null)            cacheImage = this.createImage(FRAME_WIDIH, FRAME_HEIGHT);        Graphics gCacheImage = cacheImage.getGraphics();        gCacheImage.drawImage(background, 0, 0, FRAME_WIDIH, FRAME_HEIGHT, null);        this.paint(gCacheImage);        g.drawImage(cacheImage, 0, 0, null);    }    public static void main(String[] args) {        // 主游戏开启        MainFrame mf = new MainFrame();    }}