cocos2dx 应用程序的资产大小

Question

据我所知，在cocos2dx中做一个应用，我需要三组资源ipad、ipadhd和iphone

从一个应用示例中，我看到为了支持所有分辨率的设备，我朋友使用的资产大小（背景图片）是：

ipadhd：2272 X 1536

ipad：1136 X 768

iphone：568 X 384

这些尺寸适用于横向模式游戏。 以下是我的问题： 1. 为什么我们特别需要这些尺寸？ 2. 我正在尝试制作一个使用相同资产大小的纵向模式游戏（但由于我在纵向模式下工作，所以我将图像尺寸设为 1536 X 2272、768 X 1136 和 384 X 568）。但是，由于某种原因，当 BG 图像显示在模拟器/设备上时，它会被放大。我在这里附上屏幕截图。

原图：

模拟器中显示的图像：

供参考，这里是设置设备分辨率大小和内容比例因子的代码：

#define TARGET_DESIGN_RESOLUTION_SIZE  DESIGN_RESOLUTION_480X320

typedef struct tagResource
{
    cocos2d::CCSize size;
    char directory[100];
}Resource;

static Resource smallResource = { cocos2d::CCSizeMake(320, 480), "iphone" };
static Resource mediumResource = { cocos2d::CCSizeMake(768,1024), "iPad" };
static Resource largeResource = { cocos2d::CCSizeMake(1536,2048), "ipadhd" };

#if (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_480X320)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(320, 480);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_1024X768)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(768,1024);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_2048X1536)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(1536,2048);
#elif (TARGET_DESIGN_RESOLUTION_SIZE == DESIGN_RESOLUTION_NONE)
static cocos2d::CCSize designResolutionSize = cocos2d::CCSizeMake(320, 480);
#else
#error unknown target design resolution!
#endif


bool AppDelegate::applicationDidFinishLaunching() {
// initialize director
CCDirector* pDirector = CCDirector::sharedDirector();
CCEGLView* pEGLView = CCEGLView::sharedOpenGLView();

pDirector->setOpenGLView(pEGLView);

// Set the design resolution
pEGLView->setDesignResolutionSize(designResolutionSize.width, designResolutionSize.height,kResolutionNoBorder);
CCSize frameSize = pEGLView->getFrameSize();

std::vector<std::string> resDirOrders;

// if the frame's height is larger than the height of medium resource size, select large resource.
if (frameSize.width > mediumResource.size.width)
{
    resDirOrders.push_back(largeResource.directory);
    pDirector->setContentScaleFactor(largeResource.size.width/designResolutionSize.width);
}
// if the frame's height is larger than the height of small resource size, select medium resource.
else if (frameSize.width > smallResource.size.width)
{
    resDirOrders.push_back(mediumResource.directory);
    pDirector->setContentScaleFactor(mediumResource.size.width/designResolutionSize.width);

}
// if the frame's height is smaller than the height of medium resource size, select small resource.
else
{
    resDirOrders.push_back(smallResource.directory);
    pDirector->setContentScaleFactor(smallResource.size.width/designResolutionSize.width);
}
CCFileUtils::sharedFileUtils()->setSearchPaths(resDirOrders);

// turn on display FPS
pDirector->setDisplayStats(false);

// set FPS. the default value is 1.0/60 if you don't call this
pDirector->setAnimationInterval(1.0 / 60);

// create a scene. it's an autorelease object
CCScene *pScene = GameLayer::scene();

// run
pDirector->runWithScene(pScene);

return true;
}

Answer 1

其实这是因为你的资源（资产）大小（分辨率）与你设置的设计分辨率不匹配。您的资产具有不同的纵横比，设计分辨率具有不同的纵横比。

我从来没有在我的游戏中真正使用过 contentScaleFactor。如果所有资产的比例相同，只需将设计分辨率设置为资产的相同分辨率即可。如果您使用 kResolutionExactFit 策略，Cocos2d-x 会自动重新缩放到设备屏幕。

我认为你应该阅读Detailed explanation of cocos2d-x multi-resolution support。这篇文章写的很好。