karlberg
67 lines
2.6 KiB
C++
67 lines
2.6 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/Component/Component.h>
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#include <AzCore/Component/EntityBus.h>
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#include <AzCore/Component/TickBus.h>
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#include <AzCore/Component/TransformBus.h>
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#include <AzFramework/Visibility/EntityBoundsUnionBus.h>
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#include <AzFramework/Visibility/IVisibilitySystem.h>
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namespace AzFramework
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{
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//! Provide a unified hook between entities and the visibility system.
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class EntityVisibilityBoundsUnionSystem
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: public IEntityBoundsUnionRequestBus::Handler
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, private AZ::TickBus::Handler
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{
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public:
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EntityVisibilityBoundsUnionSystem();
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void Connect();
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void Disconnect();
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// EntityBoundsUnionRequestBus overrides ...
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void RefreshEntityLocalBoundsUnion(AZ::EntityId entityId) override;
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AZ::Aabb GetEntityLocalBoundsUnion(AZ::EntityId entityId) const override;
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void ProcessEntityBoundsUnionRequests() override;
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void OnTransformUpdated(AZ::Entity* entity) override;
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private:
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struct EntityVisibilityBoundsUnionInstance
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{
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AZ::Aabb m_localEntityBoundsUnion = AZ::Aabb::CreateNull(); //!< Entity union bounding volume in local space.
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VisibilityEntry m_visibilityEntry; //!< Hook into the IVisibilitySystem interface.
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};
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using UniqueEntities = AZStd::set<AZ::Entity*>;
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using EntityVisibilityBoundsUnionInstanceMapping =
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AZStd::unordered_map<AZ::Entity*, EntityVisibilityBoundsUnionInstance>;
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void OnEntityActivated(AZ::Entity* entity);
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void OnEntityDeactivated(AZ::Entity* entity);
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// TickBus overrides ...
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void OnTick(float deltaTime, AZ::ScriptTimePoint time) override;
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void UpdateVisibilitySystem(AZ::Entity* entity, EntityVisibilityBoundsUnionInstance& instance);
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EntityVisibilityBoundsUnionInstanceMapping m_entityVisibilityBoundsUnionInstanceMapping;
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UniqueEntities m_entityBoundsDirty;
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AZ::EntityActivatedEvent::Handler m_entityActivatedEventHandler;
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AZ::EntityDeactivatedEvent::Handler m_entityDeactivatedEventHandler;
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};
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} // namespace AzFramework
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