cocos2d-x 完美适配iphone、ipad（包括retina模式）

项目中需要同时适配iphone和ipad。美术提供的iphone的图是640x960的，ipad的图是768x1024的。发布的时候，项目肯定会分开发布iphone版和ipad版，但是开发过程中，我需要看到ipad上的效果，所以开发过程中不可能分开。

联想到高低清可以用-hd后缀区分，我就想到将所有ipad的768x1024图后面全部加-ipad后缀，程序中在ipad上就让它加载-ipad后缀的图。

现在来看看我的实现：（主要模仿的-hd的实现方式）

1、首先宏定义 -ipad

找到libs/cocos2dx/include/ccConfig.h，加入宏定义代码：

#ifndef CC_IPAD_DISPLAY_FILename_SUFFIX

#define CC_IPAD_DISPLAY_FILename_SUFFIX  "-ipad"

#endif

2、修改底层读取文件的地方，如果是ipad设备就添加后缀-ipad

打开libs/cocos2dx/platform/ios/CCFileUtils_ios.mm文件

找到下面函数，并做修改

static const char *static_ccRemoveHDSuffixFromFile( const char *pszPath){

#if CC_IS_RETinA_DISPLAY_SUPPORTED

if(cocos2d::CC_CONTENT_SCALE_FACTOR() == 2 ) {

//........

}

//这里添加下面的代码：支持ipad图片 ------开始--------

if( UI_user_iNTERFACE_I@L_446_15@m() ==UIUserInterfaceI@L_446_15@mPad){

NSString *path = [NSString StringWithUTF8String: pszPath];

NSString *name = [path lastPathComponent];

NSString *suffix = [NSString StringWithUTF8String: CC_IPAD_DISPLAY_FILename_SUFFIX];

// check if path already has the suffix.

if( [name rangeOfString: suffix].LOCATIOn != NsnotFound ) {

CCLOG("cocos2d: Filename(%@) contains %@ suffix. Removing it. See cocos2d issue #1040",path,CC_RETinA_DISPLAY_FILename_SUFFIX);

NSString *newLastname = [name StringByreplacingoccurrencesOfString: suffix withString:@""];

NSString *pathWithoutLastname = [path StringBydeletingLastPathComponent];

return [[pathWithoutLastname StringByAppendingPathComponent:newLastname] UTF8String];

}

}

//支持ipad图片 ------结束--------

#endif // CC_IS_RETinA_DISPLAY_SUPPORTED

};

 

找到下面函数，并修改：

static NSString* getDoubleResolutionImage(NSString* path)

{

#if CC_IS_RETinA_DISPLAY_SUPPORTED

 

if( cocos2d::CC_CONTENT_SCALE_FACTOR() == 2 )

{

//.......

}

//这里添加支持ipad图片。--------开始----------

if( UI_user_iNTERFACE_I@L_446_15@m() ==UIUserInterfaceI@L_446_15@mPad )

{

NSString *pathWithoutExtension = [path StringBydeletingPathExtension];

NSString *name = [pathWithoutExtension lastPathComponent];

NSString *suffix = [NSString StringWithUTF8String: CC_IPAD_DISPLAY_FILename_SUFFIX];

// check if path already has the suffix.

if( [name rangeOfString: suffix].LOCATIOn != NsnotFound ) {

CCLOG("cocos2d: WARNING Filename(%@) already has the suffix %@. Using it.",name,CC_RETinA_DISPLAY_FILename_SUFFIX);

return path;

}

NSString *extension = [path pathExtension];

if( [extension isEqualToString:@"ccz"] || [extension isEqualToString:@"gz"] )

{

// All ccz / gz files should be in the format filename.xxx.ccz

// so we need to pull off the .xxx part of the extension as well

extension = [NSString StringWithFormat:@"%@.%@",[pathWithoutExtension pathExtension],extension];

pathWithoutExtension = [pathWithoutExtension StringBydeletingPathExtension];

}

NSString *reTinaName = [pathWithoutExtension StringByAppendingString: suffix];

reTinaName = [reTinaName StringByAppendingPathExtension:extension];

NSFileManager *fileManager = [[[NSFileManager alloc] init] autorelease];

if( [fileManager fileExistsAtPath:reTinaName] )

return reTinaName;

CCLOG("cocos2d: CCFileUtils: Warning HD file not found: %@",[reTinaName lastPathComponent] );

}

//这里添加支持ipad图片。--------结束----------

#endif // CC_IS_RETinA_DISPLAY_SUPPORTED

return path;

}