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141 lines
6.1 KiB
C++
141 lines
6.1 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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#include "AudioAreaEnvironmentComponent.h"
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#include <AzCore/Interface/Interface.h>
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#include <AzCore/Component/Entity.h>
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#include <AzCore/Math/MathUtils.h>
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#include <AzCore/Math/Transform.h>
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#include <AzCore/Serialization/EditContext.h>
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#include <AzCore/Serialization/SerializeContext.h>
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#include <AzFramework/Physics/PhysicsSystem.h>
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#include <AzFramework/Physics/Collision/CollisionEvents.h>
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#include <AzFramework/Physics/Common/PhysicsSimulatedBody.h>
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#include <LmbrCentral/Audio/AudioProxyComponentBus.h>
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#include <LmbrCentral/Shape/ShapeComponentBus.h>
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#include <ISystem.h>
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namespace LmbrCentral
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{
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AudioAreaEnvironmentComponent::AudioAreaEnvironmentComponent()
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: m_onTriggerEnterHandler([this]([[maybe_unused]] AzPhysics::SimulatedBodyHandle bodyHandle,
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const AzPhysics::TriggerEvent& triggerEvent)
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{
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OnTriggerEnter(triggerEvent);
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})
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, m_onTriggerExitHandler([this]([[maybe_unused]] AzPhysics::SimulatedBodyHandle bodyHandle,
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const AzPhysics::TriggerEvent& triggerEvent)
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{
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OnTriggerExit(triggerEvent);
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})
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{
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}
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//=========================================================================
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void AudioAreaEnvironmentComponent::Reflect(AZ::ReflectContext* context)
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{
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if (auto serializeContext = azrtti_cast<AZ::SerializeContext*>(context))
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{
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serializeContext->Class<AudioAreaEnvironmentComponent, AZ::Component>()
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->Version(1)
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->Field("Broad-phase Trigger Area entity", &AudioAreaEnvironmentComponent::m_broadPhaseTriggerArea)
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->Field("Environment name", &AudioAreaEnvironmentComponent::m_environmentName)
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->Field("Environment fade distance", &AudioAreaEnvironmentComponent::m_environmentFadeDistance)
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;
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}
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}
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//=========================================================================
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void AudioAreaEnvironmentComponent::Activate()
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{
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m_environmentId = INVALID_AUDIO_ENVIRONMENT_ID;
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if (!m_environmentName.empty())
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{
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Audio::AudioSystemRequestBus::BroadcastResult(m_environmentId, &Audio::AudioSystemRequestBus::Events::GetAudioEnvironmentID, m_environmentName.c_str());
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}
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if (m_broadPhaseTriggerArea.IsValid())
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{
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if (auto* physicsSystem = AZ::Interface<AzPhysics::SystemInterface>::Get())
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{
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AZStd::pair<AzPhysics::SceneHandle, AzPhysics::SimulatedBodyHandle> foundBody = physicsSystem->FindAttachedBodyHandleFromEntityId(m_broadPhaseTriggerArea);
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if (foundBody.first != AzPhysics::InvalidSceneHandle)
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{
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AzPhysics::SimulatedBodyEvents::RegisterOnTriggerEnterHandler(
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foundBody.first, foundBody.second, m_onTriggerEnterHandler);
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AzPhysics::SimulatedBodyEvents::RegisterOnTriggerExitHandler(
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foundBody.first, foundBody.second, m_onTriggerExitHandler);
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}
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}
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}
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}
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//=========================================================================
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void AudioAreaEnvironmentComponent::Deactivate()
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{
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m_onTriggerEnterHandler.Disconnect();
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m_onTriggerExitHandler.Disconnect();
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}
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//=========================================================================
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void AudioAreaEnvironmentComponent::OnTransformChanged(const AZ::Transform& /*local*/, const AZ::Transform& world)
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{
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if (m_environmentId == INVALID_AUDIO_ENVIRONMENT_ID)
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{
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AZ_WarningOnce("AudioAreaEnvironmentComponent", m_environmentId != INVALID_AUDIO_ENVIRONMENT_ID,
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"AudioAreaEnvironmentComponent - Invalid Environment being used!");
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return;
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}
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const AZ::EntityId* busEntityId = AZ::TransformNotificationBus::GetCurrentBusId();
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if (!busEntityId)
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{
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AZ_ErrorOnce("AudioAreaEnvironmentComponent", busEntityId != nullptr,
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"AudioAreaEnvironmentComponent - Bus Id is null!");
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return;
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}
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AZ::Vector3 entityPos = world.GetTranslation();
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float distanceFromShape = 0.f;
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ShapeComponentRequestsBus::EventResult(distanceFromShape, GetEntityId(), &ShapeComponentRequestsBus::Events::DistanceFromPoint, entityPos);
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// Calculate a fade value to pass as the environment amount for the entity.
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// Linear fade is fine, the audio middleware can be authored to translate this into custom curves.
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float fadeValue = AZ::GetClamp(distanceFromShape, 0.f, m_environmentFadeDistance);
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fadeValue = (1.f - (fadeValue / m_environmentFadeDistance));
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AudioProxyComponentRequestBus::Event(*busEntityId, &AudioProxyComponentRequestBus::Events::SetEnvironmentAmount, m_environmentId, fadeValue);
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}
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//=========================================================================
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void AudioAreaEnvironmentComponent::OnTriggerEnter(const AzPhysics::TriggerEvent& triggerEvent)
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{
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AZ::EntityId enteringEntityId = triggerEvent.m_otherBody->GetEntityId();
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AZ::TransformNotificationBus::MultiHandler::BusConnect(enteringEntityId);
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}
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//=========================================================================
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void AudioAreaEnvironmentComponent::OnTriggerExit(const AzPhysics::TriggerEvent& triggerEvent)
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{
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AZ::EntityId exitingEntityId = triggerEvent.m_otherBody->GetEntityId();
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AZ::TransformNotificationBus::MultiHandler::BusDisconnect(exitingEntityId);
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if (m_environmentId != INVALID_AUDIO_ENVIRONMENT_ID)
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{
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// When entities fully exit the broad-phase trigger area, set the environment amount to zero to ensure no effects linger on the entity.
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AudioProxyComponentRequestBus::Event(exitingEntityId, &AudioProxyComponentRequestBus::Events::SetEnvironmentAmount, m_environmentId, 0.f);
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}
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}
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} // namespace LmbrCentral
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