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134 lines
4.2 KiB
C++
134 lines
4.2 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/TickBus.h>
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#include <AzCore/Asset/AssetManager.h>
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#include <AzCore/RTTI/BehaviorContext.h>
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#include <ScriptEvents/Internal/BehaviorContextBinding/ScriptEventBinding.h>
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#include "ScriptEventsAsset.h"
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namespace ScriptEvents
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{
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namespace Internal
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{
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//! This is the internal object that represents a ScriptEvent.
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//! It provides the binding between the BehaviorContext and the messaging functionality.
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//! It is ref counted so that it remains alive as long as anything is referencing it, this can happen
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//! when multiple scripts or script canvas graphs are sending or receiving events defined in a given script event.
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class ScriptEventRegistration
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: public AZ::Data::AssetBus::Handler
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, public AZ::SystemTickBus::Handler
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{
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public:
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AZ_RTTI(ScriptEventRegistration, "{B8801400-65CD-49D5-B797-58E56D705A0A}");
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AZ_CLASS_ALLOCATOR(ScriptEventRegistration, AZ::SystemAllocator, 0);
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AZ::AttributeArray* m_currentAttributes;
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ScriptEventRegistration() = default;
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virtual ~ScriptEventRegistration();
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ScriptEventRegistration(AZ::Data::AssetId scriptEventAssetId)
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{
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Init(scriptEventAssetId);
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}
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void Init(AZ::Data::AssetId scriptEventAssetId);
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bool GetMethod(AZStd::string_view eventName, AZ::BehaviorMethod*& outMethod);
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AZ::BehaviorEBus* GetBehaviorBus(AZ::u32 version = (std::numeric_limits<AZ::u32>::max)())
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{
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if (version == (std::numeric_limits<AZ::u32>::max)())
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{
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return m_behaviorEBus[m_maxVersion];
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}
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return m_behaviorEBus[version];
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}
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void CompleteRegistration(AZ::Data::Asset<AZ::Data::AssetData> asset);
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AZStd::string GetBusName() const
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{
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return m_busName;
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}
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bool IsReady() const { return m_isReady; }
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protected:
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void OnSystemTick() override;
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private:
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AZ::u32 m_maxVersion = 0;
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AZ::Data::AssetId m_assetId;
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AZStd::string m_busName;
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AZStd::unordered_map<AZ::u32, AZ::BehaviorEBus*> m_behaviorEBus; // version, ebus
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AZ::Data::Asset<ScriptEvents::ScriptEventsAsset> m_asset;
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AZStd::unordered_map<AZ::Data::AssetId, AZStd::unique_ptr<ScriptEventBinding>> m_scriptEventBindings;
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bool m_isReady = false;
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// AZ::Data::AssetBus::Handler
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void OnAssetReady(AZ::Data::Asset<AZ::Data::AssetData> asset) override;
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void OnAssetReloaded(AZ::Data::Asset<AZ::Data::AssetData> asset) override;
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//
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// Reference count for intrusive_ptr
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template<class T>
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friend struct AZStd::IntrusivePtrCountPolicy;
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mutable unsigned int m_refCount = 0;
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AZ_FORCE_INLINE void add_ref() { ++m_refCount; }
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AZ_FORCE_INLINE void release()
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{
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AZ_Assert(m_refCount > 0, "Reference count logic error, trying to release reference when there are none left.");
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if (--m_refCount == 0)
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{
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AZ::Data::AssetBus::Handler::BusDisconnect();
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delete this;
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}
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}
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AZStd::string m_previousName;
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int m_previousVersion;
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};
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class OnScopeEnd
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{
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public:
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using ScopeEndFunctor = std::function<void()>;
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private:
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ScopeEndFunctor m_functor;
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public:
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OnScopeEnd(ScopeEndFunctor&& functor)
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: m_functor(AZStd::move(functor))
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{}
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OnScopeEnd(const ScopeEndFunctor& functor)
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: m_functor(functor)
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{}
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~OnScopeEnd()
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{
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m_functor();
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}
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};
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}
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}
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