画面を縦向きにする

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
	return UIInterfaceOrientationIsLandscape(interfaceOrientation);
}

UIInterfaceOrientationIsLandscapeUIInterfaceOrientationIsPortraitに変更

return UIInterfaceOrientationIsPortrait(interfaceOrientation);

How do I force portrait mode in Cocos2D?