alexpete
94 lines
2.7 KiB
C++
94 lines
2.7 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#include <AzCore/RTTI/RTTI.h>
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#include <AzCore/std/string/string.h>
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#include <AzCore/Memory/SystemAllocator.h>
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#include <AzCore/std/containers/vector.h>
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namespace AzFramework
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{
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class Scene final
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{
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public:
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AZ_TYPE_INFO(Scene, "{DB449BB3-7A95-434D-BC61-47ACBB1F3436}");
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AZ_CLASS_ALLOCATOR(Scene, AZ::SystemAllocator, 0);
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explicit Scene(AZStd::string_view name);
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const AZStd::string& GetName();
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// Set the instance of a subsystem associated with this scene.
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template <typename T>
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bool SetSubsystem(T* system);
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// Unset the instance of a subsystem associated with this scene.
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template <typename T>
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bool UnsetSubsystem();
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// Get the instance of a subsystem associated with this scene.
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template <typename T>
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T* GetSubsystem();
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private:
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AZStd::string m_name;
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// Storing keys separate from data to optimize for fast key search.
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AZStd::vector<AZ::TypeId> m_systemKeys;
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AZStd::vector<void*> m_systemPointers;
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};
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template <typename T>
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bool Scene::SetSubsystem(T* system)
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{
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if (GetSubsystem<T>() != nullptr)
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{
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return false;
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}
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m_systemKeys.push_back(T::RTTI_Type());
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m_systemPointers.push_back(system);
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return true;
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}
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template <typename T>
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bool Scene::UnsetSubsystem()
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{
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for (size_t i = 0; i < m_systemKeys.size(); ++i)
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{
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if (m_systemKeys.at(i) == T::RTTI_Type())
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{
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m_systemKeys.at(i) = m_systemKeys.back();
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m_systemKeys.pop_back();
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m_systemPointers.at(i) = m_systemPointers.back();
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m_systemPointers.pop_back();
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return true;
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}
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}
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return false;
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}
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template <typename T>
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T* Scene::GetSubsystem()
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{
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for (size_t i = 0; i < m_systemKeys.size(); ++i)
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{
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if (m_systemKeys.at(i) == T::RTTI_Type())
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{
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return reinterpret_cast<T*>(m_systemPointers.at(i));
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}
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}
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return nullptr;
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}
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} // AzFramework
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