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93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project
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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 <ForceRegionForces.h>
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#include <PhysX/ColliderComponentBus.h>
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#include <PhysX/ForceRegionComponentBus.h>
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#include <LmbrCentral/Shape/SplineComponentBus.h>
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#include <AzCore/Component/TransformBus.h>
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#include <AzCore/EBus/Results.h>
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#include <AzCore/RTTI/ReflectContext.h>
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namespace PhysX
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{
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namespace Pipeline
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{
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class MeshAsset;
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}
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//! Force region internal representation. Computes net force exerted on bodies in a force region.
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class ForceRegion : private AZ::TransformNotificationBus::MultiHandler
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, private LmbrCentral::SplineComponentNotificationBus::Handler
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, private PhysX::ForceRegionRequestBus::Handler
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, private Physics::ColliderComponentEventBus::Handler
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{
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public:
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AZ_CLASS_ALLOCATOR(ForceRegion, AZ::SystemAllocator, 0);
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AZ_TYPE_INFO(ForceRegion, "{A04BF43D-242B-4B67-AEE9-201FBD36DFEB}");
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static void Reflect(AZ::ReflectContext* context);
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ForceRegion() = default;
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ForceRegion(const ForceRegion& forceRegion);
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void Activate(AZ::EntityId entityId);
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void Deactivate();
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//! Add a force to this force region and activate it.
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void AddAndActivateForce(AZStd::unique_ptr<BaseForce> force);
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//! Computes net force exerted on an entity.
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AZ::Vector3 CalculateNetForce(const EntityParams& entity) const;
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//! Removes all forces in force region.
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void ClearForces();
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//! Get region parameters - entity ID, position, rotation, spline, AABB
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PhysX::RegionParams GetRegionParams() const;
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private:
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// ForceRegionRequestBus
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void AddForceWorldSpace(const AZ::Vector3& direction, float magnitude) override;
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void AddForceLocalSpace(const AZ::Vector3& direction, float magnitude) override;
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void AddForcePoint(float magnitude) override;
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void AddForceSplineFollow(float dampingRatio, float frequency, float targetSpeed, float lookAhead) override;
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void AddForceSimpleDrag(float dragCoefficient, float volumeDensity) override;
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void AddForceLinearDamping(float damping) override;
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// SplineComponentNotificationBus
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void OnSplineChanged() override;
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// TransformNotificationBus
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void OnTransformChanged(const AZ::Transform& local, const AZ::Transform& world) override;
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// Physics::ColliderComponentEventBus
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void OnColliderChanged() override;
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AZ::EntityId m_entityId; ///< Entity id of the volume.
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AZ::Transform m_worldTransform; ///< The world transform of the volume.
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AZStd::vector<AZStd::unique_ptr<BaseForce>> m_forces; ///< List of forces attached to the volume.
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PhysX::RegionParams m_regionParams;
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};
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namespace ForceRegionUtil
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{
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//! Creates a structure with params about the force region used to calculate a resulting force.
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RegionParams CreateRegionParams(AZ::EntityId entityId);
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//! Creates a structure with params about en entity used to calculate a resulting force.
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EntityParams CreateEntityParams(AZ::EntityId entityId);
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//! Gets aggregated Aabb of all colliders assigned to entity.
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AZ::Aabb GetForceRegionAabb(AZ::EntityId entityId);
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}
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}
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