Spawn blueprint from C++

Development Programming & Scripting Blueprint
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1

I would like to spawn just a simple, solid cube at a set location. I have tried many examples and have been through all of the questions/answers, but am still unable to do it.

Can someone please provide me with a full working example?

I have created a blueprint via the editor and called it ‘Cube-Blueprint’. I know I can get the reference to the blueprint and have tried to use it… unsuccessfully.

I have also tried without using the blueprint… and here it is:

Here is my actor .h

#pragma once

#include "GameFramework/Actor.h"
#include "FloatingActor.generated.h"

UCLASS()
class EARTHQUAKES_API AFloatingActor : public AActor
{
	GENERATED_BODY()
	
public:	

	// Sets default values for this component's properties
	AFloatingActor(const class FObjectInitializer& PCIP);

};

Here is my actor .cpp

#include "FloatingActor.h"

// Sets default values
AFloatingActor::AFloatingActor(const class FObjectInitializer& PCIP)
	
{
	SetActorHiddenInGame(false);
}

In another class, within the BeginPlay(), I do this:

void AMapWall::BeginPlay()
{
	Super::BeginPlay();

	
	UWorld* const World = GetWorld();
	if (World) {
		for (int i = 0; i < 5; i++)
		{

			UStaticMesh* newComp = ConstructObject<UStaticMesh>(UStaticMesh::StaticClass(), this, FName("A_BOX"));
		
			FVector Location = FVector(-746.0, 30, 50 * i);
			AActor* actor = World->SpawnActor(AFloatingActor::StaticClass(), &Location);
			actor->AddComponent(FName("A_BOX"), false, FTransform(), NULL);
		}

	}

}

I get my 5 actors created and visible in the “World Outliner” window, but they are not visible in the game and they do not have an mesh or anything else…

What am I doing wrong? Can I just instantiate the blueprint “Cube_Blueprint” that I created with the editor?

2

Hello rich2020,

I already had this put together from setting it up for another user but it seems like it’ll be useful here as well.

http:///

This contains 2 classes, MySpawner and MyActor. When it comes to spawning a blueprint, with the current setup, MySpawner is set to spawn anything that is based off the AMyActor class (line 84/85). When you make a blueprint based off the MySpawner class and drag an instance into the level, you can select what it should spawn in the Details panel.

Hope this helps!

3

Thank you.

4

lines 84/85 and 112 are eyes opener… thank your very much