108 lines
2.3 KiB
C++
108 lines
2.3 KiB
C++
// Copyright (C) 2017 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#include <Nazara/Core/Endianness.hpp>
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namespace Ndk
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{
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/*!
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* \ingroup NDK
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* \brief Builds a component id based on a name
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* \return Identifier for the component
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*
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* \param name Name to generate id from
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*/
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///TODO: constexpr with the C++14
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template<unsigned int N>
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ComponentId BuildComponentId(const char (&name)[N])
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{
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static_assert(N-1 <= sizeof(ComponentId), "Name too long for this size of component id");
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ComponentId componentId = 0;
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for (unsigned int i = 0; i < N; ++i)
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componentId |= static_cast<ComponentId>(name[i]) << i*8;
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return componentId;
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}
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/*!
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* \ingroup NDK
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* \brief Gets the component id of a component
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* \return Identifier for the component
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*/
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template<typename ComponentType>
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ComponentIndex GetComponentIndex()
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{
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return ComponentType::componentIndex;
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}
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/*!
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* \ingroup NDK
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* \brief Gets the system id of a system
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* \return Identifier for the system
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*/
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template<typename SystemType>
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SystemIndex GetSystemIndex()
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{
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return SystemType::systemIndex;
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}
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/*!
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* \ingroup NDK
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* \brief Initializes the a component
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* \return Identifier for the component
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*
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* \param name Name to generate id from
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*/
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template<typename ComponentType, unsigned int N>
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ComponentIndex InitializeComponent(const char (&name)[N])
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{
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ComponentType::componentIndex = ComponentType::RegisterComponent(name);
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return ComponentType::componentIndex;
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}
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/*!
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* \ingroup NDK
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* \brief Initializes the a system
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* \return Identifier for the system
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*/
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template<typename SystemType>
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SystemIndex InitializeSystem()
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{
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SystemType::systemIndex = SystemType::RegisterSystem();
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return SystemType::systemIndex;
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}
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/*!
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* \brief Checks whether the parameter is a component
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* \return true If it is the case
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*
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* \param component Component to check
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*/
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template<typename ComponentType, typename C>
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bool IsComponent(C& component)
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{
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return component.GetIndex() == GetComponentIndex<ComponentType>();
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}
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/*!
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* \brief Checks whether the parameter is a system
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* \return true If it is the case
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*
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* \param system System to check
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*/
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template<typename SystemType, typename S>
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bool IsSystem(S& system)
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{
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return system.GetIndex() == GetSystemIndex<SystemType>();
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}
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}
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