cocos2dx多分布率适配(iphone5、ipad、android)

游戏已经提交app store等待审核了，现在整理下相关资料。先说说分辨率的问题。

cocos2d-x从2.0.4版本已经完美适配了各种分辨率，下面贴下相关代码，

在AppDelegate::applicationDidFinishLaunching(){}里面加这些代码：

// 填充模式
	ResolutionPolicy kResolutionNum = kResolutionNoBorder;

	if (target == kTargetIpad)
	{
		// ipad
		CCFileUtils::sharedFileUtils()->setResourceDirectory("iphonehd");

		// don't enable retina because we don't have ipad hd resource
		CCEGLView::sharedOpenGLView()->setDesignResolutionSize(1024, 768, kResolutionNum);
	}
	else if (target == kTargetIphone)
	{
		// iphone

		// 设计尺寸width、height
		float visibleSizeWidth = 960;
		float visibleSizeHeight = 640;

		// 根据屏幕尺寸与设计尺寸的比，重新定义设计尺寸（参考kResolutionNum来适配）
		CCSize winSize = CCDirector::sharedDirector()->getWinSize();
		if (winSize.width/winSize.height > visibleSizeWidth/visibleSizeHeight)
		{
			visibleSizeWidth = visibleSizeHeight * winSize.width/winSize.height;
		}
		else if (winSize.width/winSize.height < visibleSizeWidth/visibleSizeHeight)
		{
			visibleSizeHeight = visibleSizeWidth / (winSize.width/winSize.height);
		}

		CCFileUtils::sharedFileUtils()->setResourceDirectory("iphonehd");
		CCSize VisibleSize = CCEGLView::sharedOpenGLView()->getVisibleSize();
		CCEGLView::sharedOpenGLView()->setDesignResolutionSize(visibleSizeWidth, visibleSizeHeight, kResolutionNum);
	}
	else 
	{
		// android, windows, blackberry, linux or mac
		// use 960*640 resources as design resolution size
		
		// 设计尺寸width、height
		float visibleSizeWidth = 960;
		float visibleSizeHeight = 640;

		// 根据屏幕尺寸与设计尺寸的比，重新定义设计尺寸（参考kResolutionNum来适配）
		CCSize winSize = CCDirector::sharedDirector()->getWinSize();
		if (winSize.width/winSize.height > visibleSizeWidth/visibleSizeHeight)
		{
			visibleSizeWidth = visibleSizeHeight * winSize.width/winSize.height;
		}
		else if (winSize.width/winSize.height < visibleSizeWidth/visibleSizeHeight)
		{
			visibleSizeHeight = visibleSizeWidth / (winSize.width/winSize.height);
		}
		
		CCFileUtils::sharedFileUtils()->setResourceDirectory("iphonehd");
		CCEGLView::sharedOpenGLView()->setDesignResolutionSize(visibleSizeWidth, visibleSizeHeight, kResolutionNum);
		CCFileUtils::sharedFileUtils()->setPopupNotify(false);
	}

注意：1.适配iphone5时要添加一张启动图片，图片命名为Default-568h@2x.png，不然iphone5两边还是黑边。

     2.setDesignResolutionSize()是指设计尺寸，而getWinSize()是窗口尺寸，显示时是把设计尺寸按照设置的填充模式映射到窗口上去。

     3.三种填充模式：kResolutionExactFit（宽高非等比缩放，全填充）、kResolutionNoBorder（宽高等比缩放，部分区域可能被裁减）、kResolutionShowAll（宽高等比缩放，部分区域可能出现黑边），我觉得用kResolutionNoBorder好些。