This is the online documentation for Colossus Entertainments Pixie Game Engine

System.h Go to the documentation of this file. #ifndef __System_H__ #define __System_H__ // It shouldn't be possible to create copies of Systems, and therefore the copy constructor // and assignment operators have been made private with no implementation. Unfortunately, // this will cause compiler warning for derived classes, when the compiler tries to // automatically generate the copy constructor and assignment operator. To make sure we get // a clean build without having to declare a copy constructor and assignment operator in // every derived class, those two warnings are disabled for every file that includes System.h #pragma warning( disable : 4511) // copy constructor could not be generated #pragma warning( disable : 4512) // assignment operator could not be generated // Includes #include "Engine.h" // External declares // System class System { friend class SystemManager; friend class Engine; public: bool IsInitialized(); bool IsStarted(); bool IsRunning(); protected: System(); virtual ~System(); virtual void Initialize(); virtual void Start(); virtual void Stop(); virtual void Terminate(); private: void SetInitialized(bool initialized); void SetStarted(bool started); private: bool initialized_; bool started_; // The following will generate a compiler error if there is an attempt // to create a second instance of the class private: System(const System&); const System& operator=(const System&); }; // Helper macros for creating singletons #define SYSTEM_IMPLEMENTATION(implementationName) \ private: \ static implementationName* Create##implementationName##Instance() \ { \ return new implementationName; \ } \ public: \ static void Register() \ { \ Engine::GetInstance()->RegisterSystem( \ #implementationName, \ (void*)Create##implementationName##Instance); \ } #define IMPLEMENT_GETINSTANCE(className) \ inline className* GetInstance_##className(bool assertExists = true) \ { \ static className* instance=0; \ if (instance) \ { \ return instance; \ } \ \ if (!assertExists && !Engine::GetInstance()->IsSystemPresent(#className)) \ { \ return 0; \ } \ \ instance=(className*)Engine::GetInstance()->GetSystem(#className); \ return instance; \ } \ #endif /* __System_H__ */