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106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzCore/Component/Component.h>
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#include <AzCore/Component/EntityBus.h>
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namespace AzFramework
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{
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namespace Components
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{
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//////////////////////////////////////////////////////////////////////////
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// Helper functions to make certain functions optional in the class wrapped by
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// EditorComponentAdapter and ComponentAdapter.
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// Make Init() Optional
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template<typename T, typename = void>
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struct ComponentInitHelper
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{
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static void Init([[maybe_unused]] T& controller)
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{
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}
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};
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template<typename T>
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struct ComponentInitHelper<T, AZStd::void_t<decltype(AZStd::declval<T>().Init())>>
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{
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static void Init(T& controller)
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{
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controller.Init();
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}
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};
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template<typename T, typename = void>
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struct ComponentActivateHelper
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{
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static void Activate([[maybe_unused]] T& controller, [[maybe_unused]] const AZ::EntityComponentIdPair& entityComponentIdPair)
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{
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}
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};
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template<typename T>
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struct ComponentActivateHelper<T, AZStd::void_t<decltype(AZStd::declval<T>().Activate(AZ::EntityId()))>>
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{
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static void Activate(T& controller, const AZ::EntityComponentIdPair& entityComponentIdPair)
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{
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controller.Activate(entityComponentIdPair.GetEntityId());
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}
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};
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template<typename T>
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struct ComponentActivateHelper<T, AZStd::void_t<decltype(AZStd::declval<T>().Activate(AZ::EntityComponentIdPair()))>>
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{
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static void Activate(T& controller, const AZ::EntityComponentIdPair& entityComponentIdPair)
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{
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controller.Activate(entityComponentIdPair);
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}
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};
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// Make GetProvidedServices, GetDependentServicesHelper, GetRequiredServices and GetIncompatibleServices optional.
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template<typename T>
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void GetProvidedServicesHelper(AZ::ComponentDescriptor::DependencyArrayType&, const AZStd::false_type&) {}
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template<typename T>
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void GetProvidedServicesHelper(AZ::ComponentDescriptor::DependencyArrayType& services, const AZStd::true_type&)
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{
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T::GetProvidedServices(services);
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}
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template<typename T>
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void GetDependentServicesHelper(AZ::ComponentDescriptor::DependencyArrayType&, const AZStd::false_type&) {}
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template<typename T>
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void GetDependentServicesHelper(AZ::ComponentDescriptor::DependencyArrayType& services, const AZStd::true_type&)
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{
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T::GetDependentServices(services);
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}
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template<typename T>
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void GetRequiredServicesHelper(AZ::ComponentDescriptor::DependencyArrayType&, const AZStd::false_type&) {}
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template<typename T>
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void GetRequiredServicesHelper(AZ::ComponentDescriptor::DependencyArrayType& services, const AZStd::true_type&)
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{
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T::GetRequiredServices(services);
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}
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template<typename T>
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void GetIncompatibleServicesHelper(AZ::ComponentDescriptor::DependencyArrayType&, const AZStd::false_type&) {}
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template<typename T>
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void GetIncompatibleServicesHelper(AZ::ComponentDescriptor::DependencyArrayType& services, const AZStd::true_type&)
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{
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T::GetIncompatibleServices(services);
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}
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} // namespace Components
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} // namespace AzFramework
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