116 lines
2.4 KiB
C++
116 lines
2.4 KiB
C++
// Copyright (C) 2020 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 <Nazara/Core/Error.hpp>
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namespace Ndk
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{
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/*!
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* \brief Constructs a BaseComponent object with an index
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*
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* \param index Index of the component
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*/
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inline BaseComponent::BaseComponent(ComponentIndex index) :
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m_componentIndex(index),
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m_entity(nullptr)
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{
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}
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/*!
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* \brief Gets the entity owning this component
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* \return A handle to the entity owning this component, may be invalid if no entity owns it.
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*/
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inline const EntityHandle& BaseComponent::GetEntity() const
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{
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return m_entity;
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}
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/*!
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* \brief Gets the index of the component
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* \return Index of the component
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*/
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inline ComponentIndex BaseComponent::GetIndex() const
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{
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return m_componentIndex;
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}
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/*!
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* \brief Gets the maximal index of the components
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* \return Index of the maximal component
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*/
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inline ComponentIndex BaseComponent::GetMaxComponentIndex()
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{
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return static_cast<ComponentIndex>(s_entries.size());
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}
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/*!
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* \brief Registers a component
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* \return Index of the registered component
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*
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* \param id Index of the component
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* \param factory Factory to create the component
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*
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* \remark Produces a NazaraAssert if the identifier is already in use
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*/
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inline ComponentIndex BaseComponent::RegisterComponent(ComponentId id, Factory factoryFunc)
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{
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// We add our component to the end
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ComponentIndex index = static_cast<ComponentIndex>(s_entries.size());
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s_entries.resize(index + 1);
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// We retrieve it and affect it
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ComponentEntry& entry = s_entries.back();
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entry.factory = factoryFunc;
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entry.id = id;
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// We ensure that id is not already in use
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NazaraAssert(s_idToIndex.find(id) == s_idToIndex.end(), "This id is already in use");
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s_idToIndex[id] = index;
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return index;
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}
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/*!
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* \brief Sets the entity on which the component operates
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*/
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inline void BaseComponent::SetEntity(Entity* entity)
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{
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if (m_entity != entity)
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{
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if (m_entity)
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OnDetached();
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m_entity = entity;
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if (m_entity)
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OnAttached();
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}
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}
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/*!
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* \brief Initializes the BaseComponent
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* \return true
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*/
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inline bool BaseComponent::Initialize()
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{
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// Nothing to do
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return true;
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}
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/*!
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* \brief Uninitializes the BaseComponent
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*/
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inline void BaseComponent::Uninitialize()
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{
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s_entries.clear();
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s_idToIndex.clear();
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}
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}
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