import net.minecraft.client.LoadingScreenRenderer; //导入依赖的package包/类
private boolean copyDirectory(File from, File to, LoadingScreenRenderer ipg) {
	if (!from.isDirectory()) return false;
	if (!to.exists()) to.mkdirs();
	if (!to.isDirectory()) return false;
	if (ipg != null) ipg.displaySavingString("Moving chunks");
	      
	try {
		File list[] = from.listFiles();
		
		for (int i = 0; i < list.length; i++) {
			if (list[i].isDirectory()) {
				copyDirectory(list[i], new File(to, list[i].getName()), null);
			} else if (list[i].isFile()) {
				copyFile(list[i], new File(to, list[i].getName()));
			}
			if (ipg != null) {
				ipg.setLoadingProgress((i * 100) / list.length);
			}
		}
	} catch (Exception e) {return false;}
	return true;
}
 

import net.minecraft.client.LoadingScreenRenderer; //导入依赖的package包/类
public static void checkDisplayMode()
{
    try
    {
        if (minecraft.isFullScreen())
        {
            if (fullscreenModeChecked)
            {
                return;
            }

            fullscreenModeChecked = true;
            desktopModeChecked = false;
            DisplayMode e = Display.getDisplayMode();
            Dimension dim = getFullscreenDimension();

            if (dim == null)
            {
                return;
            }

            if (e.getWidth() == dim.width && e.getHeight() == dim.height)
            {
                return;
            }

            DisplayMode newMode = getDisplayMode(dim);

            if (newMode == null)
            {
                return;
            }

            Display.setDisplayMode(newMode);
            minecraft.displayWidth = Display.getDisplayMode().getWidth();
            minecraft.displayHeight = Display.getDisplayMode().getHeight();

            if (minecraft.displayWidth <= 0)
            {
                minecraft.displayWidth = 1;
            }

            if (minecraft.displayHeight <= 0)
            {
                minecraft.displayHeight = 1;
            }

            if (minecraft.currentScreen != null)
            {
                ScaledResolution sr = new ScaledResolution(minecraft.gameSettings, minecraft.displayWidth, minecraft.displayHeight);
                int sw = sr.getScaledWidth();
                int sh = sr.getScaledHeight();
                minecraft.currentScreen.setWorldAndResolution(minecraft, sw, sh);
            }

            minecraft.loadingScreen = new LoadingScreenRenderer(minecraft);
            updateFramebufferSize();
            Display.setFullscreen(true);
            minecraft.gameSettings.updateVSync();
            GL11.glEnable(GL11.GL_TEXTURE_2D);
        }
        else
        {
            if (desktopModeChecked)
            {
                return;
            }

            desktopModeChecked = true;
            fullscreenModeChecked = false;
            minecraft.gameSettings.updateVSync();
            Display.update();
            GL11.glEnable(GL11.GL_TEXTURE_2D);
        }
    }
    catch (Exception var6)
    {
        var6.printStackTrace();
    }
}