Mike Balfour
5b504086f9
Using the Altitude Gradient as an input to the Height Gradient List can cause infinite recursion since it is both setting and fetching the same height value. Added guards to warn if this occurs and gracefully handles the situation. Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>
100 lines
3.7 KiB
C++
100 lines
3.7 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/Asset/AssetCommon.h>
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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/TransformBus.h>
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#include <AzCore/Jobs/JobManagerBus.h>
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#include <AzCore/Jobs/JobFunction.h>
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#include <AzCore/Math/Vector3.h>
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#include <AzCore/Math/Aabb.h>
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#include <LmbrCentral/Dependency/DependencyMonitor.h>
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#include <LmbrCentral/Dependency/DependencyNotificationBus.h>
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#include <LmbrCentral/Shape/ShapeComponentBus.h>
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#include <AzFramework/Terrain/TerrainDataRequestBus.h>
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#include <TerrainSystem/TerrainSystemBus.h>
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namespace LmbrCentral
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{
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template<typename, typename>
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class EditorWrappedComponentBase;
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}
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namespace Terrain
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{
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class TerrainHeightGradientListConfig
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: public AZ::ComponentConfig
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{
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public:
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AZ_CLASS_ALLOCATOR(TerrainHeightGradientListConfig, AZ::SystemAllocator, 0);
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AZ_RTTI(TerrainHeightGradientListConfig, "{C5FD71A9-0722-4D4C-B605-EBEBF90C628F}", AZ::ComponentConfig);
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static void Reflect(AZ::ReflectContext* context);
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AZStd::vector<AZ::EntityId> m_gradientEntities;
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};
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class TerrainHeightGradientListComponent
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: public AZ::Component
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, private Terrain::TerrainAreaHeightRequestBus::Handler
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, private LmbrCentral::DependencyNotificationBus::Handler
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, private AzFramework::Terrain::TerrainDataNotificationBus::Handler
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{
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public:
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template<typename, typename>
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friend class LmbrCentral::EditorWrappedComponentBase;
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AZ_COMPONENT(TerrainHeightGradientListComponent, "{1BB3BA6C-6D4A-4636-B542-F23ECBA8F2AB}");
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static void GetProvidedServices(AZ::ComponentDescriptor::DependencyArrayType& services);
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static void GetIncompatibleServices(AZ::ComponentDescriptor::DependencyArrayType& services);
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static void GetRequiredServices(AZ::ComponentDescriptor::DependencyArrayType& services);
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static void Reflect(AZ::ReflectContext* context);
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TerrainHeightGradientListComponent(const TerrainHeightGradientListConfig& configuration);
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TerrainHeightGradientListComponent() = default;
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~TerrainHeightGradientListComponent() = default;
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void GetHeight(const AZ::Vector3& inPosition, AZ::Vector3& outPosition, bool& terrainExists) override;
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//////////////////////////////////////////////////////////////////////////
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// AZ::Component interface implementation
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void Activate() override;
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void Deactivate() override;
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bool ReadInConfig(const AZ::ComponentConfig* baseConfig) override;
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bool WriteOutConfig(AZ::ComponentConfig* outBaseConfig) const override;
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//////////////////////////////////////////////////////////////////////////
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// LmbrCentral::DependencyNotificationBus
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void OnCompositionChanged() override;
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//////////////////////////////////////////////////////////////////////////
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// AzFramework::Terrain::TerrainDataNotificationBus
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void OnTerrainDataChanged(const AZ::Aabb& dirtyRegion, TerrainDataChangedMask dataChangedMask) override;
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private:
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TerrainHeightGradientListConfig m_configuration;
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void RefreshMinMaxHeights();
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float m_cachedMinWorldHeight{ 0.0f };
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float m_cachedMaxWorldHeight{ 0.0f };
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AZ::Vector2 m_cachedHeightQueryResolution{ 1.0f, 1.0f };
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AZ::Aabb m_cachedShapeBounds;
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// prevent recursion in case user attaches cyclic dependences
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mutable bool m_isRequestInProgress{ false };
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LmbrCentral::DependencyMonitor m_dependencyMonitor;
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};
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}
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