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[FYI] Rob.Gay #ROBOMERGE-SOURCE: CL 11125898 via CL 11126424 #ROBOMERGE-BOT: (v640-11091645) [CL 11126508 by bob tellez in Main branch]
131 lines
4.0 KiB
C++
131 lines
4.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "Sound/SoundMix.h"
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#include "EngineGlobals.h"
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#include "Engine/Engine.h"
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#include "Styling/CoreStyle.h"
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#include "AudioDeviceManager.h"
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#include "Sound/SoundClass.h"
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#if WITH_EDITOR
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#include "Framework/Notifications/NotificationManager.h"
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#include "Widgets/Notifications/SNotificationList.h"
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#endif
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/*-----------------------------------------------------------------------------
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USoundMix implementation.
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-----------------------------------------------------------------------------*/
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USoundMix::USoundMix(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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bApplyEQ = false;
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InitialDelay = 0.0f;
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Duration = -1.0f;
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FadeInTime = 0.2f;
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FadeOutTime = 0.2f;
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#if WITH_EDITORONLY_DATA
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bChanged = false;
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#endif
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}
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void USoundMix::BeginDestroy()
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{
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if (!GExitPurge && GEngine)
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{
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FAudioDeviceManager* AudioDeviceManager = GEngine->GetAudioDeviceManager();
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if (AudioDeviceManager)
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{
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AudioDeviceManager->RemoveSoundMix(this);
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}
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}
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Super::BeginDestroy();
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}
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FString USoundMix::GetDesc( void )
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{
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return( FString::Printf( TEXT( "Adjusters: %d" ), SoundClassEffects.Num() ) );
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}
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#if WITH_EDITOR
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void USoundMix::PostEditChangeProperty(FPropertyChangedEvent& PropertyChangedEvent)
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{
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if (PropertyChangedEvent.ChangeType != EPropertyChangeType::Interactive && PropertyChangedEvent.MemberProperty)
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{
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if (PropertyChangedEvent.MemberProperty->GetFName() == GET_MEMBER_NAME_CHECKED(USoundMix,SoundClassEffects))
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{
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TArray<USoundClass*> ProblemClasses;
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if (CausesPassiveDependencyLoop(ProblemClasses))
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{
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for (int32 Index = 0; Index < ProblemClasses.Num(); Index++)
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{
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FFormatNamedArguments Arguments;
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Arguments.Add(TEXT("SoundClass"), FText::FromString(ProblemClasses[Index]->GetName()));
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Arguments.Add(TEXT("SoundMix"), FText::FromString(GetName()));
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FNotificationInfo Info(FText::Format(NSLOCTEXT("Engine", "PassiveSoundMixLoop", "Passive dependency created by Sound Class'{SoundClass}' and Sound Mix'{SoundMix}' - results may be undesirable"), Arguments));
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Info.ExpireDuration = 10.0f;
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Info.Image = FCoreStyle::Get().GetBrush(TEXT("MessageLog.Warning"));
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FSlateNotificationManager::Get().AddNotification(Info);
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}
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}
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}
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}
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#if WITH_EDITORONLY_DATA
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bChanged = true;
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#endif
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}
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bool USoundMix::CausesPassiveDependencyLoop(TArray<USoundClass*>& ProblemClasses) const
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{
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ProblemClasses.Empty();
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for (int32 Index = 0; Index < SoundClassEffects.Num(); Index++)
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{
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const FSoundClassAdjuster& CurrentAdjuster = SoundClassEffects[Index];
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// dependency loops are only a problem if volume is decreased,
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// which can potentially deactivate the Sound Mix
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if (CurrentAdjuster.SoundClassObject && CurrentAdjuster.VolumeAdjuster < 1.0f)
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{
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return CheckForDependencyLoop(CurrentAdjuster.SoundClassObject, ProblemClasses, CurrentAdjuster.bApplyToChildren);
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}
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}
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return false;
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}
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bool USoundMix::CheckForDependencyLoop(USoundClass* SoundClass, TArray<USoundClass*>& ProblemClasses, bool CheckChildren) const
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{
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check(SoundClass);
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bool bFoundProblemClass = false;
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// check for circular references to passive sound mixes
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for (int32 Index = 0; Index < SoundClass->PassiveSoundMixModifiers.Num(); Index++)
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{
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const FPassiveSoundMixModifier& CurrentSoundMix = SoundClass->PassiveSoundMixModifiers[Index];
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// Ignore if volume threshold is between 0 and 10 (arbitrarily large upper value) as the Sound Mix will not be deactivated
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if (CurrentSoundMix.SoundMix == this && CurrentSoundMix.MinVolumeThreshold > 0.f && CurrentSoundMix.MaxVolumeThreshold < 10.f)
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{
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ProblemClasses.AddUnique(SoundClass);
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bFoundProblemClass = true;
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}
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}
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// check children if required
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if (CheckChildren)
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{
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for (int32 Index = 0; Index < SoundClass->ChildClasses.Num(); Index++)
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{
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if (SoundClass->ChildClasses[Index] && CheckForDependencyLoop(SoundClass->ChildClasses[Index], ProblemClasses, CheckChildren))
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{
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bFoundProblemClass = true;
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}
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}
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}
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return bFoundProblemClass;
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}
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#endif // WITH_EDITOR
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