Ability to directly see c++ code of a blueprint node in-editor

[Philippe_St-Amand]

Having the possibility to observe the c++ code of any blueprint node in the editor would go a long way to help c++ users understand how to do certain things. I actually think this would be one of the best and most efficient way of documenting c++ in UE4 without investing too much time in it. That way, every Blueprint tutorial would also serve as a c++ tutorial, in a way. After all, it’s much easier for c++ users to follow along with blueprint tutorials, than the other way around.

Even better if it could also open the .h file where that blueprint function is declared in VS (or simply display which file it is declared in)

I know a lot of them are in UGameplayStatics, but sometimes I struggle to find some of them.

[HavocX]

This would be great!

[Mattiwatti]

The good news is that this is actually possible!

Add this to your Engine.ini:
[Kismet]
bNativeCodeGenerationTool=true

You’ll now have an extra menu item in the Blueprint editor under File -> Developer -> Generate native code, that lets you compile the blueprint and save the generated .h and .cpp files.

The bad news is… you won’t like what you see. Here’s the .cpp for a blueprint with a single audio component and NO functions or variables:

#include "SoundTest.h"
#include "BP_SoundSphere__pf2355170477.h"
#include "GeneratedCodeHelpers.h"
#include "Runtime/Engine/Classes/Engine/SimpleConstructionScript.h"
#include "Runtime/Engine/Classes/Engine/SCS_Node.h"
#include "Runtime/Engine/Classes/Components/AudioComponent.h"
#include "Runtime/Engine/Classes/Sound/SoundAttenuation.h"
#include "Runtime/Engine/Classes/Components/SceneComponent.h"
#include "Runtime/Engine/Classes/GameFramework/Actor.h"
#include "Runtime/CoreUObject/Classes/Object.h"
#include "Runtime/Engine/Classes/Components/ActorComponent.h"
#include "Runtime/Engine/Classes/Engine/EngineTypes.h"
#include "Runtime/Engine/Classes/Engine/EngineBaseTypes.h"
#include "Runtime/Engine/Classes/EdGraph/EdGraphPin.h"
#include "Runtime/Engine/Classes/Engine/AssetUserData.h"
#include "Runtime/Engine/Classes/Interfaces/Interface_AssetUserData.h"
#include "Runtime/Engine/Classes/GameFramework/PhysicsVolume.h"
#include "Runtime/Engine/Classes/GameFramework/Volume.h"
#include "Runtime/Engine/Classes/Engine/Brush.h"
#include "Runtime/Engine/Classes/Components/BrushComponent.h"
#include "Runtime/Engine/Classes/Components/PrimitiveComponent.h"
#include "Runtime/Engine/Classes/GameFramework/Pawn.h"
#include "Runtime/Engine/Classes/GameFramework/Controller.h"
#include "Runtime/Engine/Classes/GameFramework/PlayerController.h"
#include "Runtime/Engine/Classes/GameFramework/TouchInterface.h"
#include "Runtime/InputCore/Classes/InputCoreTypes.h"
#include "Runtime/Engine/Classes/Engine/Texture2D.h"
#include "Runtime/Engine/Classes/Engine/Texture.h"
#include "Runtime/Engine/Classes/GameFramework/OnlineReplStructs.h"
#include "Runtime/Engine/Classes/Camera/CameraTypes.h"
#include "Runtime/Engine/Classes/Camera/CameraAnim.h"
#include "Runtime/Engine/Classes/Matinee/InterpGroup.h"
#include "Runtime/Engine/Classes/Matinee/InterpTrack.h"
#include "Runtime/Engine/Classes/Matinee/InterpTrackInst.h"
#include "Runtime/Engine/Classes/Camera/CameraShake.h"
#include "Runtime/Engine/Classes/Engine/Scene.h"
#include "Runtime/Engine/Classes/Engine/TextureCube.h"
#include "Runtime/Engine/Classes/Camera/CameraAnimInst.h"
#include "Runtime/Engine/Classes/Matinee/InterpTrackInstMove.h"
#include "Runtime/Engine/Classes/Matinee/InterpTrackMove.h"
#include "Runtime/Engine/Classes/Matinee/InterpGroupInst.h"
#include "Runtime/Engine/Classes/Camera/PlayerCameraManager.h"
#include "Runtime/Engine/Classes/Particles/EmitterCameraLensEffectBase.h"
#include "Runtime/Engine/Classes/Particles/Emitter.h"
#include "Runtime/Engine/Classes/Particles/ParticleSystemComponent.h"
#include "Runtime/Engine/Classes/Materials/MaterialInterface.h"
#include "Runtime/Engine/Classes/Engine/SubsurfaceProfile.h"
#include "Runtime/Engine/Classes/Materials/Material.h"
#include "Runtime/Engine/Classes/Materials/MaterialExpression.h"
#include "Runtime/Engine/Classes/PhysicalMaterials/PhysicalMaterial.h"
#include "Runtime/Engine/Classes/Vehicles/TireType.h"
#include "Runtime/Engine/Classes/Engine/DataAsset.h"
#include "Runtime/Engine/Classes/PhysicalMaterials/PhysicalMaterialPropertyBase.h"
#include "Runtime/Engine/Classes/PhysicsEngine/PhysicsSettingsEnums.h"
#include "Runtime/Engine/Classes/Engine/BlendableInterface.h"
#include "Runtime/Engine/Public/ParticleHelper.h"
#include "Runtime/Engine/Classes/Components/SkeletalMeshComponent.h"
#include "Runtime/Engine/Classes/Components/SkinnedMeshComponent.h"
#include "Runtime/Engine/Classes/Components/MeshComponent.h"
#include "Runtime/Engine/Classes/Animation/VertexAnim/VertexAnimBase.h"
#include "Runtime/Engine/Classes/Engine/SkeletalMesh.h"
#include "Runtime/Engine/Classes/PhysicsEngine/PhysicsAsset.h"
#include "Runtime/Engine/Classes/PhysicsEngine/BodySetup.h"
#include "Runtime/Engine/Classes/PhysicsEngine/BodyInstance.h"
#include "Runtime/Engine/Classes/PhysicsEngine/BodySetupEnums.h"
#include "Runtime/Engine/Classes/PhysicsEngine/AggregateGeom.h"
#include "Runtime/Engine/Classes/PhysicsEngine/ConvexElem.h"
#include "Runtime/Engine/Classes/PhysicsEngine/ShapeElem.h"
#include "Runtime/Engine/Classes/PhysicsEngine/SphylElem.h"
#include "Runtime/Engine/Classes/PhysicsEngine/BoxElem.h"
#include "Runtime/Engine/Classes/PhysicsEngine/SphereElem.h"
#include "Runtime/Engine/Classes/Animation/Skeleton.h"
#include "Runtime/Engine/Classes/Animation/BlendProfile.h"
#include "Runtime/Engine/Classes/Animation/SmartName.h"
#include "Runtime/Engine/Classes/Engine/SkeletalMeshSocket.h"
#include "Runtime/Engine/Classes/Interfaces/Interface_CollisionDataProvider.h"
#include "Runtime/Engine/Classes/Animation/AnimInstance.h"
#include "Runtime/Engine/Classes/Animation/AnimationAsset.h"
#include "Runtime/Engine/Classes/Animation/AnimMetaData.h"
#include "Runtime/Engine/Classes/Animation/AnimSequenceBase.h"
#include "Runtime/Engine/Public/Animation/AnimCurveTypes.h"
#include "Runtime/Engine/Classes/Curves/CurveBase.h"
#include "Runtime/Engine/Public/Animation/AnimTypes.h"
#include "Runtime/Engine/Classes/Animation/AnimLinkableElement.h"
#include "Runtime/Engine/Classes/Animation/AnimMontage.h"
#include "Runtime/Engine/Classes/Animation/AnimCompositeBase.h"
#include "Runtime/Engine/Public/AlphaBlend.h"
#include "Runtime/Engine/Classes/Curves/CurveFloat.h"
#include "Runtime/Engine/Classes/Animation/AnimNotifies/AnimNotifyState.h"
#include "Runtime/Engine/Classes/Animation/AnimNotifies/AnimNotify.h"
#include "Runtime/Engine/Classes/Particles/ParticleSystem.h"
#include "Runtime/Engine/Classes/Particles/ParticleEmitter.h"
#include "Runtime/Engine/Classes/Materials/MaterialInstanceDynamic.h"
#include "Runtime/Engine/Classes/Materials/MaterialInstance.h"
#include "Runtime/Engine/Classes/Materials/MaterialInstanceBasePropertyOverrides.h"
#include "Runtime/Engine/Classes/Engine/Font.h"
#include "Runtime/SlateCore/Public/Fonts/CompositeFont.h"
#include "Runtime/SlateCore/Public/Fonts/FontBulkData.h"
#include "Runtime/Engine/Classes/Engine/FontImportOptions.h"
#include "Runtime/SlateCore/Public/Fonts/FontProviderInterface.h"
#include "Runtime/Engine/Classes/Camera/CameraModifier.h"
#include "Runtime/Engine/Classes/Camera/CameraActor.h"
#include "Runtime/Engine/Classes/Camera/CameraComponent.h"
#include "Runtime/Engine/Classes/Camera/CameraModifier_CameraShake.h"
#include "Runtime/Engine/Classes/GameFramework/PlayerState.h"
#include "Runtime/Engine/Classes/GameFramework/Info.h"
#include "Runtime/Engine/Classes/Components/BillboardComponent.h"
#include "Runtime/Engine/Classes/GameFramework/LocalMessage.h"
#include "Runtime/Engine/Classes/GameFramework/EngineMessage.h"
#include "Runtime/Engine/Classes/GameFramework/ForceFeedbackEffect.h"
#include "Runtime/Engine/Classes/Sound/SoundBase.h"
#include "Runtime/Engine/Classes/Sound/SoundConcurrency.h"
#include "Runtime/Engine/Classes/Sound/SoundClass.h"
#include "Runtime/Engine/Classes/Sound/SoundMix.h"
#include "Runtime/Engine/Classes/GameFramework/HUD.h"
#include "Runtime/Engine/Classes/GameFramework/DebugTextInfo.h"
#include "Runtime/Engine/Classes/Engine/Canvas.h"
#include "Runtime/Engine/Classes/Debug/ReporterGraph.h"
#include "Runtime/Engine/Classes/Debug/ReporterBase.h"
#include "Runtime/Engine/Classes/Engine/NetSerialization.h"
#include "Runtime/Engine/Classes/Components/InputComponent.h"
#include "Runtime/Engine/Classes/GameFramework/SpectatorPawn.h"
#include "Runtime/Engine/Classes/GameFramework/DefaultPawn.h"
#include "Runtime/Engine/Classes/Components/StaticMeshComponent.h"
#include "Runtime/Engine/Classes/Engine/StaticMesh.h"
#include "Runtime/Engine/Classes/Components/SphereComponent.h"
#include "Runtime/Engine/Classes/Components/ShapeComponent.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavAreas/NavArea.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavigationTypes.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavAreas/NavArea_Obstacle.h"
#include "Runtime/Engine/Classes/GameFramework/PawnMovementComponent.h"
#include "Runtime/Engine/Classes/GameFramework/NavMovementComponent.h"
#include "Runtime/Engine/Classes/GameFramework/MovementComponent.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavigationData.h"
#include "Runtime/Engine/Classes/AI/Navigation/RecastNavMesh.h"
#include "Runtime/Engine/Classes/GameFramework/FloatingPawnMovement.h"
#include "Runtime/AIModule/Classes/AIController.h"
#include "Runtime/AIModule/Classes/Perception/AIPerceptionComponent.h"
#include "Runtime/AIModule/Classes/Perception/AIPerceptionTypes.h"
#include "Runtime/AIModule/Classes/Perception/AISense.h"
#include "Runtime/AIModule/Classes/Perception/AIPerceptionSystem.h"
#include "Runtime/AIModule/Classes/Perception/AISenseEvent.h"
#include "Runtime/AIModule/Classes/Perception/AISenseConfig.h"
#include "Runtime/AIModule/Classes/Navigation/PathFollowingComponent.h"
#include "Runtime/AIModule/Classes/AIResourceInterface.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavFilters/NavigationQueryFilter.h"
#include "Runtime/GameplayTasks/Classes/GameplayTask.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BlackboardData.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BlackboardComponent.h"
#include "Runtime/AIModule/Classes/BehaviorTree/Blackboard/BlackboardKeyType.h"
#include "Runtime/AIModule/Classes/BrainComponent.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BehaviorTree.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BTCompositeNode.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BTNode.h"
#include "Runtime/GameplayTasks/Classes/GameplayTaskOwnerInterface.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BTService.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BTAuxiliaryNode.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BTDecorator.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BehaviorTreeTypes.h"
#include "Runtime/AIModule/Classes/BehaviorTree/BTTaskNode.h"
#include "Runtime/AIModule/Classes/AITypes.h"
#include "Runtime/GameplayTasks/Classes/GameplayTasksComponent.h"
#include "Runtime/GameplayTasks/Classes/GameplayTaskResource.h"
#include "Runtime/AIModule/Classes/Actions/PawnActionsComponent.h"
#include "Runtime/AIModule/Classes/Actions/PawnAction.h"
#include "Runtime/AIModule/Classes/Perception/AIPerceptionListenerInterface.h"
#include "Runtime/AIModule/Classes/GenericTeamAgentInterface.h"
#include "Runtime/Engine/Public/VisualLogger/VisualLoggerDebugSnapshotInterface.h"
#include "Runtime/Engine/Classes/GameFramework/SpectatorPawnMovement.h"
#include "Runtime/Engine/Classes/Engine/LatentActionManager.h"
#include "Runtime/Engine/Classes/GameFramework/HapticFeedbackEffect.h"
#include "Runtime/Engine/Classes/Engine/NetConnection.h"
#include "Runtime/Engine/Classes/Engine/Player.h"
#include "Runtime/Engine/Classes/Engine/Channel.h"
#include "Runtime/Engine/Classes/Engine/NetDriver.h"
#include "Runtime/Engine/Classes/Engine/World.h"
#include "Runtime/Engine/Classes/Engine/ChildConnection.h"
#include "Runtime/Engine/Classes/GameFramework/PlayerInput.h"
#include "Runtime/Engine/Classes/GameFramework/CheatManager.h"
#include "Runtime/Engine/Classes/Engine/DebugCameraController.h"
#include "Runtime/Engine/Classes/Components/DrawFrustumComponent.h"
#include "Runtime/Engine/Classes/Matinee/InterpTrackInstDirector.h"
#include "Runtime/Engine/Classes/GameFramework/DamageType.h"
#include "Runtime/Engine/Classes/GameFramework/Character.h"
#include "Runtime/Engine/Classes/GameFramework/CharacterMovementComponent.h"
#include "Runtime/Engine/Classes/GameFramework/RootMotionSource.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavigationAvoidanceTypes.h"
#include "Runtime/Engine/Public/AI/RVOAvoidanceInterface.h"
#include "Runtime/Engine/Classes/Interfaces/NetworkPredictionInterface.h"
#include "Runtime/Engine/Classes/Components/CapsuleComponent.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavAgentInterface.h"
#include "Runtime/Engine/Classes/AI/Navigation/NavRelevantInterface.h"
#include "Runtime/Engine/Classes/Components/ChildActorComponent.h"
#include "BP_SoundSphere__pf2355170477.h"
#include "Runtime/Engine/Classes/Sound/SoundWave.h"
#include "Runtime/Engine/Classes/Sound/SoundGroups.h"
void ABP_SoundSphere_C__pf2355170477::__CustomDynamicClassInitialization(UDynamicClass* InDynamicClass)
{
	ensure(0 == InDynamicClass->ReferencedConvertedFields.Num());
	ensure(0 == InDynamicClass->MiscConvertedSubobjects.Num());
	ensure(0 == InDynamicClass->UsedAssets.Num());
	ensure(0 == InDynamicClass->DynamicBindingObjects.Num());
	ensure(0 == InDynamicClass->ComponentTemplates.Num());
	ensure(0 == InDynamicClass->Timelines.Num());
	ensure(nullptr == InDynamicClass->AnimClassImplementation);
	// List of all referenced assets
	InDynamicClass->UsedAssets.Add(LoadObject<UObject>(nullptr, TEXT("/Game/Sound/SoundAttenuation.SoundAttenuation")));
	InDynamicClass->UsedAssets.Add(LoadObject<UObject>(nullptr, TEXT("/Engine/BasicShapes/Sphere.Sphere")));
	InDynamicClass->UsedAssets.Add(LoadObject<UObject>(nullptr, TEXT("/Game/StarterContent/Materials/M_Metal_Gold.M_Metal_Gold")));
}
ABP_SoundSphere_C__pf2355170477::ABP_SoundSphere_C__pf2355170477(const FObjectInitializer& ObjectInitializer) : Super(ObjectInitializer)
{
	if(HasAnyFlags(RF_ClassDefaultObject) && (ABP_SoundSphere_C__pf2355170477::StaticClass() == GetClass()))
	{
		ABP_SoundSphere_C__pf2355170477::__CustomDynamicClassInitialization(CastChecked<UDynamicClass>(GetClass()));
	}
	
	auto __Local__0 = CastChecked<UStaticMeshComponent>(GetDefaultSubobjectByName(TEXT("StaticMeshComponent0")));
	__Local__0->StaticMesh = CastChecked<UStaticMesh>(CastChecked<UDynamicClass>(ABP_SoundSphere_C__pf2355170477::StaticClass())->UsedAssets[1], ECastCheckedType::NullAllowed);
	__Local__0->bUseDefaultCollision = false;
	__Local__0->OverrideMaterials = TArray<UMaterialInterface*> ();
	__Local__0->OverrideMaterials.Reserve(1);
	__Local__0->OverrideMaterials.Add(CastChecked<UMaterialInterface>(CastChecked<UDynamicClass>(ABP_SoundSphere_C__pf2355170477::StaticClass())->UsedAssets[2], ECastCheckedType::NullAllowed));
	static TWeakObjectPtr<UProperty> __Local__2{};
	const UProperty* __Local__1 = __Local__2.Get();
	if (nullptr == __Local__1)
	{
		__Local__1 = (FBodyInstance::StaticStruct())->FindPropertyByName(FName(TEXT("CollisionProfileName")));
		check(__Local__1);
		__Local__2 = __Local__1;
	}
	auto& __Local__3 = (*(__Local__1->ContainerPtrToValuePtr<FName >(&(__Local__0->BodyInstance), 0)));
	__Local__3 = FName(TEXT("BlockAllDynamic"));
	static TWeakObjectPtr<UProperty> __Local__5{};
	const UProperty* __Local__4 = __Local__5.Get();
	if (nullptr == __Local__4)
	{
		__Local__4 = (FBodyInstance::StaticStruct())->FindPropertyByName(FName(TEXT("MassInKgOverride")));
		check(__Local__4);
		__Local__5 = __Local__4;
	}
	auto& __Local__6 = (*(__Local__4->ContainerPtrToValuePtr<float >(&(__Local__0->BodyInstance), 0)));
	__Local__6 = 109.456337f;
	static TWeakObjectPtr<UProperty> __Local__8{};
	const UProperty* __Local__7 = __Local__8.Get();
	if (nullptr == __Local__7)
	{
		__Local__7 = (FBodyInstance::StaticStruct())->FindPropertyByName(FName(TEXT("ObjectType")));
		check(__Local__7);
		__Local__8 = __Local__7;
	}
	auto& __Local__9 = (*(__Local__7->ContainerPtrToValuePtr<TEnumAsByte<ECollisionChannel> >(&(__Local__0->BodyInstance), 0)));
	__Local__9 = ECollisionChannel::ECC_WorldDynamic;
	__Local__0->Mobility = EComponentMobility::Movable;
	bpv__AudioComponent__pf = CreateDefaultSubobject<UAudioComponent>(TEXT("AudioComponent"));
	bpv__AudioComponent__pf->CreationMethod = EComponentCreationMethod::Native;
	bpv__AudioComponent__pf->AttachToComponent(__Local__0, FAttachmentTransformRules::KeepRelativeTransform );
	bpv__AudioComponent__pf->AttenuationSettings = CastChecked<USoundAttenuation>(CastChecked<UDynamicClass>(ABP_SoundSphere_C__pf2355170477::StaticClass())->UsedAssets[0], ECastCheckedType::NullAllowed);
}
void ABP_SoundSphere_C__pf2355170477::PostLoadSubobjects(FObjectInstancingGraph* OuterInstanceGraph)
{
	Super::PostLoadSubobjects(OuterInstanceGraph);
	if(bpv__AudioComponent__pf)
	{
		bpv__AudioComponent__pf->CreationMethod = EComponentCreationMethod::Native;
	}
}
void ABP_SoundSphere_C__pf2355170477::__StaticDependenciesAssets(TArray<FBlueprintDependencyData>& AssetsToLoad)
{
	AssetsToLoad.Add({FName(TEXT("/Game/Sound/SoundAttenuation")), FName(TEXT("SoundAttenuation")), FName(TEXT("/Script/Engine")), FName(TEXT("SoundAttenuation"))});
	AssetsToLoad.Add({FName(TEXT("/Engine/BasicShapes/Sphere")), FName(TEXT("Sphere")), FName(TEXT("/Script/Engine")), FName(TEXT("StaticMesh"))});
	AssetsToLoad.Add({FName(TEXT("/Game/StarterContent/Materials/M_Metal_Gold")), FName(TEXT("M_Metal_Gold")), FName(TEXT("/Script/Engine")), FName(TEXT("Material"))});
}
struct FRegisterHelper__ABP_SoundSphere_C__pf2355170477
{
	FRegisterHelper__ABP_SoundSphere_C__pf2355170477()
	{
		FConvertedBlueprintsDependencies::Get().RegisterClass(TEXT("/Game/Sound/BP_SoundSphere"), &ABP_SoundSphere_C__pf2355170477::__StaticDependenciesAssets);
	}
	static FRegisterHelper__ABP_SoundSphere_C__pf2355170477 Instance;
};
FRegisterHelper__ABP_SoundSphere_C__pf2355170477 FRegisterHelper__ABP_SoundSphere_C__pf2355170477::Instance;
void ABP_SoundSphere_C__pf2355170477::bpf__UserConstructionScript__pf()
{
}

And this is a pretty good outcome all things considered. I tried it on UT’s BaseUTCharacter and ended up with 64 files totalling over 2 MB.

If you want to improve your C++ skills, this might not be the best way to do it.

[SaxonRah]

@Mattiwatti;544088

The good news is that this is actually possible!
If you want to improve your C++ skills, this might not be the best way to do it.

This is not what he was asking for. At-least I don’t believe it is. I think they want a document viewer for the C++ code of the nodes of a blueprint. Not getting generated c++ code.

Like being able to see how the blueprint function jump is implemented in C++ for example.

While this is kinda not really supported except highly indirect and not really what you’re asking for, but you can click on this button
This allows you to see this blueprints parent C++ file in visual studio. while it only works with the parent class and shows you a header if you’re in a bp only prj but it gives you an idea where things are located so you can use github to look at the code. but if you have a c++ prj i am pretty sure this button opens it up in your VS project as read only and you can see it’s source too not only header, but i cant remember if this is true or if its only for your created C++ classes

&stc=1

[Mattiwatti]

@SaxonRah;544103

This is not what he was asking for. At-least I don’t believe it is. I think they want a document viewer for the C++ code of the nodes of a blueprint. Not getting generated c++ code.

Like being able to see how the blueprint function jump is implemented in C++ for example.

While this is kinda not really supported except highly indirect and not really what you’re asking for, but you can click on this button
This allows you to see this blueprints parent C++ file in visual studio. while it only works with the parent class and shows you a header if you’re in a bp only prj but it gives you an idea where things are located so you can use github to look at the code. but if you have a c++ prj i am pretty sure this button opens it up in your VS project as read only and you can see it’s source too not only header, but i cant remember if this is true or if its only for your created C++ classes

In that case, yes, that link is probably the next best thing. It indeed opens up the header file in VS. You can navigate to the cpp instantly with something like Resharper or Visual Assist X though. I think VS itself is also supposed to be able to do that, but it fails half the time.

As for viewing code in the editor itself, there is the CodeView plugin, which is a very promising idea in theory, but unfortunately it has very limited functionality.

You can see C++ functions but not variables, and the function list does not have any parameter or return type info. It’s useful as a ‘what does this class do’ kind of overview, but no more than that. It would be a great tool if it was improved a bit.

Edit: why did the forum make my screenshot so tiny? Now I have two images. Oh well.

[rYuxq]

About the idea of converting blueprints into C++ and viewing their source code:

I created a clean project with just one blueprint where I would put just a tiny little bit of blueprint-nodes. Just barely those that I wanted to undetstand. The code you get is preaty neat, nothing complicated.
But I realized that that code is mostly useless, because blueprints call functions and use variables that are only accessible through blueprints (they are not, but if you access them from your own C++ code, your code breaks). Why can’t the nodes use the same functions we would use with C++??
But I still got to learn a little from viewing the blueprints code though.

In short: I agree with you though, the fastest way of learning Unreal C++ would be being able to see the C++ implementation of a node.
If Epic staff can not deliver, we gotta do it ourselves xD At least for my part: I will document the implementation of every node as I need them in C++. Hopefully, I will be able to do it the right way xD

[HateDread]

@rYuxq;544115

About the idea of converting blueprints into C++ and viewing their source code:

I created a clean project with just one blueprint where I would put just a tiny little bit of blueprint-nodes. Just barely those that I wanted to undetstand. The code you get is preaty neat, nothing complicated.
But I realized that that code is mostly useless, because blueprints call functions and use variables that are only accessible through blueprints (they are not, but if you access them from your own C++ code, your code breaks). Why can’t the nodes use the same functions we would use with C++??
But I still got to learn a little from viewing the blueprints code though.

In short: I agree with you though, the fastest way of learning Unreal C++ would be being able to see the C++ implementation of a node.
If Epic staff can not deliver, we gotta do it ourselves xD At least for my part: I will document the implementation of every node as I need them in C++. Hopefully, I will be able to do it the right way xD

For most of them, can’t you just right-click on a node and select “Goto code definition”? It might just open the file it’s in, not to the specific function, but it’s easy enough to find from there!

[Philippe_St-Amand]

Just to clear things up, I am not referring to the new BP-to-c++ generator feature. I want to look at the original implementation of each individual node

@SaxonRah;544103

While this is kinda not really supported except highly indirect and not really what you’re asking for, but you can click on this button
This allows you to see this blueprints parent C++ file in visual studio.

It gives you the parent class of the blueprint class, but not the class in which the functions of each node is declared.

I’d like to be able to right-click on a “Create Session” node, for example, and click a button that takes me to that UFUNCTION’s header/cpp file. That way, I can see how Epic themselves implemented the creation of an online session. And I don’t have to die of old age twice while looking for documentation on how to do this in c++

[SGPMAPPING]

It’s still on 2022! We would love to have a plugin to see what a blueprint looks like in C++. Mostly for the noobs like me who learned the code thanks to the intuitive Blueprint interface