我有一个模拟足球的程序。当我在eclipse中正常运行Main类时，程序运行正常。我的问题是我想创建一个主菜单，它将调用Main方法并启动游戏。我有菜单，它调用方法，启动游戏，但不会将游戏画到屏幕上。这只发生在我从菜单启动游戏时，如果直接从Eclipse运行它可以正常工作。这是代码：
*package SimpleSoccer;
//imports removed
/**
* Class to show main menu and give options to view stats, start new game, or exit
*
*
*/
public class MainMenu extends JFrame {
//constructor
MainMenu() {
super("Main Menu for Soccer Simulator");
setSize(400, 300);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container content = getContentPane();
content.setBackground(Color.green);
content.setLayout(new FlowLayout());
JButton startGame = new JButton("Start Game");
content.add(startGame);
startGame.addActionListener(new ButtonListener());
JButton viewStats = new JButton("View Stats");
content.add(viewStats);
viewStats.addActionListener(new ButtonListener2());
JButton exit = new JButton("Exit");
content.add(exit);
exit.addActionListener(new ButtonListener3());
setVisible(true);
}
//for the start game button
//Main m = new Main();
class ButtonListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent a) {
Main.main(null);
}
}
//for the view stats button
class ButtonListener2 implements ActionListener {
@Override
public void actionPerformed(ActionEvent a) {
StatTable.main(null);
}
}
//for the exit button
class ButtonListener3 implements ActionListener {
@Override
public void actionPerformed(ActionEvent a) {
System.exit(0);
}
}
public static void main(String[] args) {
MainMenu m = new MainMenu();
}
}*
主要课程：
/**
* @author Petr (http://www.sallyx.org/)
*/
package SimpleSoccer;
*emphasized text*
//imports removed
public class Main {
//--------------------------------- Globals ------------------------------
//
//------------------------------------------------------------------------
static String g_szApplicationName = "Simple Soccer";
//static String g_szWindowClassName = "MyWindowClass";
static SoccerPitch g_SoccerPitch;
// bacause of game restart (g_SoccerPitch could be null for a while)
static Lock SoccerPitchLock = new ReentrantLock();
//create a timer
static PrecisionTimer timer = new PrecisionTimer(Prm.FrameRate);
//used when a user clicks on a menu item to ensure the option is 'checked'
//correctly
static void CheckAllMenuItemsAppropriately(MyMenuBar hwnd) {
CheckMenuItemAppropriately(hwnd, IDM_SHOW_REGIONS, Prm.bRegions);
CheckMenuItemAppropriately(hwnd, IDM_SHOW_STATES, Prm.bStates);
CheckMenuItemAppropriately(hwnd, IDM_SHOW_IDS, Prm.bIDs);
CheckMenuItemAppropriately(hwnd, IDM_AIDS_SUPPORTSPOTS, Prm.bSupportSpots);
CheckMenuItemAppropriately(hwnd, ID_AIDS_SHOWTARGETS, Prm.bViewTargets);
CheckMenuItemAppropriately(hwnd, IDM_AIDS_HIGHLITE, Prm.bHighlightIfThreatened);
}
static void HandleMenuItems(int wParam, MyMenuBar hwnd) {
switch (wParam) {
case ID_AIDS_NOAIDS:
Prm.bStates = false;
Prm.bRegions = false;
Prm.bIDs = false;
Prm.bSupportSpots = false;
Prm.bViewTargets = false;
Prm.bHighlightIfThreatened = false;
CheckAllMenuItemsAppropriately(hwnd);
break;
case IDM_SHOW_REGIONS:
Prm.bRegions = !Prm.bRegions;
CheckAllMenuItemsAppropriately(hwnd);
break;
case IDM_SHOW_STATES:
Prm.bStates = !Prm.bStates;
CheckAllMenuItemsAppropriately(hwnd);
break;
case IDM_SHOW_IDS:
Prm.bIDs = !Prm.bIDs;
CheckAllMenuItemsAppropriately(hwnd);
break;
case IDM_AIDS_SUPPORTSPOTS:
Prm.bSupportSpots = !Prm.bSupportSpots;
CheckAllMenuItemsAppropriately(hwnd);
break;
case ID_AIDS_SHOWTARGETS:
Prm.bViewTargets = !Prm.bViewTargets;
CheckAllMenuItemsAppropriately(hwnd);
break;
case IDM_AIDS_HIGHLITE:
Prm.bHighlightIfThreatened = !Prm.bHighlightIfThreatened;
CheckAllMenuItemsAppropriately(hwnd);
break;
}//end switch
}
static BufferedImage buffer;
static Graphics2D hdcBackBuffer;
//these hold the dimensions of the client window area
static int cxClient;
static int cyClient;
long tStart = System.currentTimeMillis();
long tEnd = System.currentTimeMillis();
long tDelta = tEnd - tStart;
double elapsedSeconds = tDelta / 1000.0;
long start = System.currentTimeMillis();
long end = start + 60*1000; // 60 seconds * 1000 ms/sec
public static void main(String[] args) {
final Window window = new Window(g_szApplicationName);
window.setIconImage(LoadIcon("/SimpleSoccer/icon1.png"));
window.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
buffer = new BufferedImage(WindowWidth, WindowHeight, BufferedImage.TYPE_INT_RGB);
hdcBackBuffer = buffer.createGraphics();
//these hold the dimensions of the client window area
cxClient = buffer.getWidth();
cyClient = buffer.getHeight();
//seed random number generator
common.misc.utils.setSeed(0);
window.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
Point center = GraphicsEnvironment.getLocalGraphicsEnvironment().getCenterPoint();
//Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
window.setResizable(false);
int y = center.y - window.getHeight() / 2;
window.setLocation(center.x - window.getWidth() / 2, y >= 0 ? y : 0);
Script1.MyMenuBar menu = Script1.createMenu(IDR_MENU1);
window.setJMenuBar(menu);
g_SoccerPitch = new SoccerPitch(cxClient, cyClient);
CheckAllMenuItemsAppropriately(menu);
final JPanel panel = new JPanel() {
@Override
public void paint(Graphics g) {
super.paint(g);
gdi.StartDrawing(hdcBackBuffer);
//fill our backbuffer with white
gdi.fillRect(Color.WHITE, 0, 0, WindowWidth, WindowHeight);
SoccerPitchLock.lock();
g_SoccerPitch.Render();
SoccerPitchLock.unlock();
gdi.StopDrawing(hdcBackBuffer);
g.drawImage(buffer, 0, 0, null);
}
};
panel.setSize(WindowWidth, WindowHeight);
panel.setPreferredSize(new Dimension(WindowWidth, WindowHeight));
window.add(panel);
window.pack();
window.addKeyListener(new KeyAdapter() {
@Override
public void keyReleased(KeyEvent e) {
CppToJava.keyCache.released(e);
switch (e.getKeyChar()) {
case KeyEvent.VK_ESCAPE: {
System.exit(0);
}
break;
case 'r':
case 'R': {
SoccerPitchLock.lock();
g_SoccerPitch = null;
g_SoccerPitch = new SoccerPitch(cxClient, cyClient);
JMenuBar bar = Script1.createMenu(IDR_MENU1);
window.setJMenuBar(bar);
bar.revalidate();
SoccerPitchLock.unlock();
}
break;
case 'p':
case 'P': {
g_SoccerPitch.TogglePause();
}
break;
}//end switch
}//end switch }
@Override
public void keyPressed(KeyEvent e) {
CppToJava.keyCache.pressed(e);
}
});
window.addComponentListener(new ComponentAdapter() {
@Override //has the user resized the client area?
public void componentResized(ComponentEvent e) {
//if so we need to update our variables so that any drawing
//we do using cxClient and cyClient is scaled accordingly
cxClient = e.getComponent().getBounds().width;
cyClient = e.getComponent().getBounds().height;
//now to resize the backbuffer accordingly.
buffer = new BufferedImage(cxClient, cyClient, BufferedImage.TYPE_INT_RGB);
hdcBackBuffer = buffer.createGraphics();
}
});
//make the window visible
window.setVisible(true);
//timer.SmoothUpdatesOn();
//start the timer
timer.Start();
while (true) {
//update
if (timer.ReadyForNextFrame()) {
SoccerPitchLock.lock();
g_SoccerPitch.Update();
SoccerPitchLock.unlock();
//render
//panel.revalidate();
panel.repaint();
try {
//System.out.println(timer.TimeElapsed());
Thread.sleep(2);
} catch (InterruptedException ex) {
}
}
}//end while
}
}
当我按下＆＃34;新游戏＆＃34;按钮程序运行，但似乎跳过paint（）方法，任何人都可以告诉我为什么会发生这种情况？ 感谢