Why my particlesystemcomponent not working?

Development Asset Creation FX
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1

Greetings!

I’ve been trying to create an Actor that activates a particlesystem if an event happens. The Actor has 2 events, one of them deactivates the particle system the other activates it. First I made a reference to an AEmitter that was placed in the editor and that time it worked fine, but I dont want a reference to another Actor so I tried to make it with particlesystemcomponent and it does not work.

My Code:

/** Header */
UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Portal")
UParticleSystem* ParticleTemplate;

UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Portal")
UParticleSystemComponent* Particle;

/** CPP */
/** Event activating the particle component */
	if (!Particle)
	{
		Particle = UGameplayStatics::SpawnEmitterAttached(ParticleTemplate, RootComponent, NAME_None, GetActorLocation(), GetActorRotation(), EAttachLocation::KeepWorldPosition, false);
	}

	Particle->ActivateSystem(true);

/** Event deactivating the particle component */
if (Particle)
{
	Particle->DeactivateSystem();
}

I hope someone has some suggestions or ideas why this is not working because I’ve been trying to make this happen for a lot of time and I am out of ideas.

Thank you for your time.

Sincerely,
Ákos

2

Remove the ! in front of the particle system. You are checking if the particle system is not equal to null, when you should be checking if it is equal to null instead.

3

You have a logical flow doen slightly incorrect, here i changed it for ya :slight_smile: The problem was that you created the particle first, and then ALWAYS deactivated it, since if(Particle) is always true after you create it.

 /** Header */
 UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Portal")
 UParticleSystem* ParticleTemplate;
 
 UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Portal")
 UParticleSystemComponent* Particle;
 
 /** CPP */
 /** Event activating the particle component */
     // if no particle, create and activate
     if (!Particle)
     {
         Particle = UGameplayStatics::SpawnEmitterAttached(ParticleTemplate, RootComponent, NAME_None, GetActorLocation(), GetActorRotation(), EAttachLocation::KeepWorldPosition, false);

         Particle->ActivateSystem(true);
     } else { // exists, deactivate
         Particle->DeactivateSystem();
    }