Mike Balfour
40f41689ee
This represents the very beginnings of the Terrain System presented in Sig-Content RFC 4 ( https://github.com/o3de/sig-content/blob/main/rfcs/rfc-4-terrain-system.md ). There is some basic working functionality in this PR, but the system as a whole should not be considered working yet. The gem is disabled by default in all projects. All of the code below is contained in the Terrain Gem, which is disabled by default. The following components exist and can be experimented with, but should not be expected to be functionally complete yet: Terrain World - level component for enabling terrain Terrain World Debugger - level component for enabling terrain debugging features Terrain Layer Spawner - component for defining a region of terrain Terrain Height Gradient List - component for defining a list of gradients to use as terrain heights Signed-off-by: Mike Balfour <82224783+mbalfour-amzn@users.noreply.github.com>
102 lines
3.9 KiB
C++
102 lines
3.9 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, Sampler sampleFilter) override;
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void GetNormal(const AZ::Vector3& inPosition, AZ::Vector3& outNormal, Sampler sampleFilter) 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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///////////////////////////////////////////
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void GetNormalSynchronous(float x, float y, AZ::Vector3& normal);
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void RefreshMinMaxHeights();
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float GetHeight(float x, float y);
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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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LmbrCentral::DependencyMonitor m_dependencyMonitor;
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};
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}
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