103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
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/*********************************************************************
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* \file SHSystemManager.h
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* \author Daniel Chua Yee Chen
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* \brief Declaration for the SHSystemManager class.
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* SHSystemManager is the interface class where users of the engine create
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* the systems that gives the components their functionality. This also ensures that the Init and Exit functions are ran at the appropriate time
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*
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* \copyright Copyright (c) 2021 DigiPen Institute of Technology. Reproduction
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or disclosure of this file or its contents without the prior written
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consent of DigiPen Institute of Technology is prohibited.
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*********************************************************************/
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#ifndef SH_SYSTEM_MANAGER_H
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#define SH_SYSTEM_MANAGER_H
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#include <unordered_map>
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#include <memory>
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#include <string>
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#include <cassert>
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#include "../System/SHSystem.h"
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namespace SHADE
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{
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class SHSystemManager
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{
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//type definition for the container we use to store our system
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using SystemContainer = std::unordered_map<std::string, std::unique_ptr<SHSystem>>;
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private:
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static SystemContainer systemContainer;
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public:
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/*!*************************************************************************
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* This class is used as a static class.
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* No objects of this type should be created
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***************************************************************************/
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SHSystemManager() = delete;
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~SHSystemManager() = delete;
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/**************************************************************************
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* \brief
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* Create a system of type T and map it to a name.
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* throws an error if a system with the same name already exists.
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* \param name
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* name of the system
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* \return
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* none
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***************************************************************************/
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template<typename T>
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static std::enable_if_t<std::is_base_of_v<SHSystem, T>, void> CreateSystem(std::string const& name)
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{
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if (systemContainer.find(name) != systemContainer.end())
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{
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assert("System Creation Error: System with the same name already exist.");
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}
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systemContainer.emplace(name, std::make_unique<T>());
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}
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/**************************************************************************
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* \brief
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* Get a pointer to the System with a specified name.
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* \param name
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* Name of the system in the map
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* \return
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* Base System pointer.
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***************************************************************************/
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static SHSystem* GetSystem(std::string name);
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/**************************************************************************
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* \brief
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* Call the Init function of all systems.
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* \return
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* none
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***************************************************************************/
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static void Init() noexcept;
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/**************************************************************************
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* \brief
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* Call the Exit function of all systems.
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* \return
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***************************************************************************/
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static void Exit() noexcept;
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protected:
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};
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}
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#endif
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