Trouble creating custom node for blueprint

[Teatime]

Hello everyone,

I am trying to create a custom node for blueprint that creates an instance of a given class in the memory so I can use it for reference later. I have been working with blueprints since my c++ knowledge is pretty bad I know Java and Python, but the syntax in C++ is a mystery at this time.

So I made an inventory system, where I originally created an extension of AActor class “InventoryItem” and created an extension of that class for different types of items with a struct and some variables describing the item.

The problem became apparent when I tried to reference these objects in blueprints, because of course they can’t be referenced without first being created. So I discovered that with AActor classes you need to spawn them in the world to be able to reference them… Spawning the objects in the world seems, less than optimal, and I would like a way to simply create an instance of it in the computer’s memory for reference later without spawning an actor.

So it seems I need to extend directly from the UObject class, but this class has no blueprint function to create an instance in memory.

I found this page: A new, community-hosted Unreal Engine Wiki - Announcements and Releases - Unreal Engine Forums

But I can’t figure out how to get it to work…

Anyone know how to solve this? REALLY need some help

[Teatime]

I get this weird error which is probably obvious to anyone but me:

CreateNewObject.h

#pragma

#include “EdGraph/EdGraphNode.h”
#include “CreateNewObject.generated.h”

UCLASS(Abstract,NotPlaceable)
class MYPROJECT_API UCreateNewObject : public UEdGraphNode
{
GENERATED_UCLASS_BODY()
UFUNCTION(BlueprintPure, meta = (HidePin = “WorldContextObject”, DefaultToSelf = “WorldContextObject”, DisplayName = “Create Object From Blueprint”, CompactNodeTitle = “Create”, Keywords = “create new object from blueprint”), Category = Game)
static UObject* NewObjectFromBlueprint(UObject* WorldContextObject, TSubclassOf<UObject> UC);

};

Gives error on [UCLASS(Abstract, Not Placeable)] “This declaration has no storage class or type specifier”

And on [class MYPROJECT_API UCreateNewObject : public UEdGraphNode] “Expected a ;”

CreateNewObject.cpp

// Fill out your copyright notice in the Description page of Project Settings.

#include “MyProject.h”
#include “CreateNewObject.h”

UCreateNewObject::UCreateNewObject(const class FObjectInitializer& ObjectInitializer)
: Super(ObjectInitializer)
{

}

UObject* UCreateNewObject::NewObjectFromBlueprint(UObject* WorldContextObject, TSubclassOf<UObject> UC)
{
UWorld* World = GEngine->GetWorldFromContextObject(WorldContextObject);
UObject* tempObject = StaticConstructObject(UC);

return tempObject;

}

Gives error on [UCreateNewObject] “Name followed by ‘::’ must be a class or namespace name”

If someone can give me some pointers it is greatly appreciated!

[djTomServo]

Bumping, I’m having a similar issue. Trying to create a plugin for some custom hardware using the LeapMotionController plugin as a template, but I’m not really clear on the proper way to add code to a plugin, and when I try just duplicating the code in the LeapMotionController files, I get the same error (trying to follow the same pattern as LeapMotionTypes.h).