77 lines
2.1 KiB
C++
77 lines
2.1 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 Prerequisites.hpp
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#include <NDK/Algorithm.hpp>
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#include <type_traits>
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namespace Ndk
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{
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/*!
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* \ingroup NDK
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* \class Ndk::Component<ComponentType>
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* \brief NDK class that represents a component for an entity which interacts with a system
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*
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* \remark This class is meant to be derived as CRTP: "Component<Subtype>"
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*/
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/*!
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* \brief Constructs a Component object by default
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*/
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template<typename ComponentType>
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Component<ComponentType>::Component() :
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BaseComponent(GetComponentIndex<ComponentType>())
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{
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}
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template<typename ComponentType>
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Component<ComponentType>::~Component() = default;
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/*!
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* \brief Clones the component
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* \return The clone newly created
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*
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* \remark The component to clone should be trivially copy constructible
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*/
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template<typename ComponentType>
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std::unique_ptr<BaseComponent> Component<ComponentType>::Clone() const
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{
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///FIXME: Pas encore supporté par GCC (4.9.2)
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//static_assert(std::is_trivially_copy_constructible<ComponentType>::value, "ComponentType must be copy-constructible");
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return std::make_unique<ComponentType>(static_cast<const ComponentType&>(*this));
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}
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/*!
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* \brief Registers the component by assigning it an index
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*/
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template<typename ComponentType>
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ComponentIndex Component<ComponentType>::RegisterComponent(ComponentId id)
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{
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//We use the lambda to create a factory function
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auto factory = []() -> BaseComponent*
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{
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return nullptr; //< Temporary workaround to allow non-default-constructed components, will be updated for serialization
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//return new ComponentType;
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};
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return BaseComponent::RegisterComponent(id, factory);
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}
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/*!
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* \brief Registers the component by assigning it an index based on the name
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*/
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template<typename ComponentType>
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template<unsigned int N>
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ComponentIndex Component<ComponentType>::RegisterComponent(const char (&name)[N])
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{
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// We convert the string to a number which will be used as unique identifier
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ComponentId id = BuildComponentId(name);
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return RegisterComponent(id);
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}
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}
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