cocos2d 0.99.5版本屏幕默认是横屏，怎么修改为竖屏呢？

在RootViewController.m文件里面，修改如下代码
#elif GAME_AUTOROTATION == kGameAutorotationUIViewController
    //
    // EAGLView will be rotated by the UIViewController
    //
    // Sample: Autorotate only in landscpe mode
    //
    // return YES for the supported orientations
    
    return ( UIInterfaceOrientationIsPortrait( interfaceOrientation ) );