karlberg
61 lines
2.4 KiB
C++
61 lines
2.4 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/ComponentBus.h>
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namespace AZ
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{
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class Aabb;
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}
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namespace AzFramework
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{
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//! Provides an interface to retrieve and update the union of all Aabbs on a single Entity.
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//! @note This will be the combination/union of all individual Component Aabbs.
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class IEntityBoundsUnion
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{
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public:
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AZ_RTTI(IEntityBoundsUnion, "{106968DD-43C0-478E-8045-523E0BF5D0F5}");
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//! Requests the cached union of component Aabbs to be recalculated as one may have changed.
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//! @note This is used to drive event driven updates to the visibility system.
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virtual void RefreshEntityLocalBoundsUnion(AZ::EntityId entityId) = 0;
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//! Returns the cached union of all component Aabbs.
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virtual AZ::Aabb GetEntityLocalBoundsUnion(AZ::EntityId entityId) const = 0;
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//! Writes the current changes made to all entities (transforms and bounds) to the visibility system.
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//! @note During normal operation this is called every frame in OnTick but can
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//! also be called explicitly (e.g. For testing purposes).
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virtual void ProcessEntityBoundsUnionRequests() = 0;
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//! Notifies the EntityBoundsUnion system that an entities transform has been modified.
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//! @param entity the entity whose transform has been modified.
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virtual void OnTransformUpdated(AZ::Entity* entity) = 0;
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protected:
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~IEntityBoundsUnion() = default;
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};
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// EBus wrapper for ScriptCanvas
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class IEntityBoundsUnionTraits
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: public AZ::EBusTraits
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{
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public:
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static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Single;
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static const AZ::EBusAddressPolicy AddressPolicy = AZ::EBusAddressPolicy::Single;
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};
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using IEntityBoundsUnionRequestBus = AZ::EBus<IEntityBoundsUnion, IEntityBoundsUnionTraits>;
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} // namespace AzFramework
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