csb的数据加密
FlatBuffers 是一个开源的、跨平台的、高效的、提供了多种语言接口的序列化工具库。
cocos2d-x\cocos\editor-support\cocostudio\CSParseBinary_generated.h
有时间再深入研究
运行逻辑分析
加载csb的代码
#include "cocostudio/CocoStudio.h" Node* node = CSLoader::createNode("test.csb"); this->addChild(node); 复制代码
内部逻辑分析：
- 判断文件名后缀，是csb，进行解析
- 将csb关联的plist加入到cache中
auto textures = csparsebinary->textures(); int textureSize = textures->size(); for (int i = 0; i < textureSize; ++i) { // 参数是xxx.plist SpriteFrameCache::getInstance()->addSpriteFramesWithFile(textures->Get(i)->c_str()); } 复制代码
- 序列化节点树
// 根据csb里面的名字，创建对应的NodeReader Ref* ref = ObjectFactory::getInstance()->createObject(readername); NodeReaderProtocol* reader = dynamic_cast<NodeReaderProtocol*>(ref); // 创建对应的node reader->createNodeWithFlatBuffers(); // 具体的序列化node逻辑 Ref* ObjectFactory::createObject(const std::string &name) { Ref *o = nullptr; do { // _typeMap里面存储了序列化映射，通过name找到类的工厂单例 const TInfo t = _typeMap[name]; if (t._fun != nullptr) { o = t._fun(); }else if (t._func != nullptr) { o = t._func(); } } while (0); return o; } typedef cocos2d::Ref* (*Instance)(void); typedef std::function<cocos2d::Ref* (void)> InstanceFunc; struct CC_DLL TInfo { TInfo(const std::string& type, Instance ins = nullptr); TInfo(const std::string& type, InstanceFunc ins = nullptr); TInfo(const TInfo &t); TInfo& operator= (const TInfo &t); std::string _class; Instance _fun; InstanceFunc _func; }; 复制代码
ObjectFactory是个单例，在CCSGUIReader的构造函数中进行了类型的注册
#define CREATE_CLASS_WIDGET_READER_INFO(className) \ cocos2d::ObjectFactory::TInfo(#className, &className::createInstance) #define IMPLEMENT_CLASS_NODE_READER_INFO(className) \ cocos2d::Ref* className::createInstance(void) \ { \ return className::getInstance(); \ } \ cocos2d::ObjectFactory::TInfo className::__Type(#className, &className::createInstance); GUIReader::GUIReader(): m_strFilePath("") { ObjectFactory* factoryCreate = ObjectFactory::getInstance(); factoryCreate->registerType(CREATE_CLASS_WIDGET_READER_INFO(ButtonReader)); } 复制代码
每种类型Reader都继承自NodeReaderProtocol
class NodeReaderProtocol{ // 纯虚函数，生成最终的node virtual Node* createNodeWithFlatBuffers(opts)=0; // 组装属性 virtual void setPropsWithFlatBuffers()=0; } class SpriteReader : public cocos2d::Ref, public NodeReaderProtocol{ Node* createNodeWithFlatBuffers(){ Sprite* sprite = Sprite::create(); setPropsWithFlatBuffers(sprite); return sprite; } void setPropsWithFlatBuffers(Sprite* sprite){ string path; int resourceType; switch(resourceType):{ // 普通的纹理 case 0:{ sprite->setTexture(path); break; } // plist合图 case 1:{ SpriteFrame* spriteFrame = SpriteFrameCache::getInstance()->getSpriteFrameByName(path); sprite->setSpriteFrame(spriteFrame); break; } } } } 复制代码
Sprite接口调用堆栈
create(const std::string& filename) initWithFile(const std::string& filename) initWithTexture(Texture2D *texture, const Rect& rect, bool rotated) setTexture(Texture2D *texture) setTexture(const std::string &filename) setTexture(Texture2D *texture) setSpriteFrame(SpriteFrame *spriteFrame) setTexture(Texture2D *texture) 复制代码
setTexture是最终的归宿
