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This page mirrors your UMF style: simple examples with short explanations.

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Accessing the Component

UAttributeManagerComponent* Attr = FindComponentByClass<UAttributeManagerComponent>();

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Reading Attribute Values

float Health = Attr->GetAttributeValue("Health");
float Stamina = Attr->GetAttributeValue(FName("Stamina"));

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Modifying Attributes

Attr->AddToAttribute("Health", 25.f);
Attr->SubtractFromAttribute("Stamina", 10.f);
Attr->SetAttributeValue("Defense", 50.f);
Under the hood:
  • Modifiers are validated
  • Link definitions re-evaluate
  • Replication updates clients
  • Relevant events fire

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Applying Effects

Attr->ApplyEffect(EffectDefinition, Instigator);
Effects come from UEffectDefinition assets.

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XP & Leveling

Attr->AddXP("Logging", 50.f);
int32 NewLevel = Attr->GetAttributeLevel("Logging");
XP uses curve tables defined in the profile’s progression config.

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Listening for Events

Typical method: 
Attr->OnAttributeChanged.AddDynamic(this, &ThisClass::HandleChange);
Or performance version (preferred): 
Attr->OnAttributeChangedNative.AddUObject(this, &ThisClass::HandleChange);

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Full C++ Example

void AMyCharacter::ConsumeStamina(float Amount)
{
    if (auto* Attr = FindComponentByClass<UAttributeManagerComponent>())
    {
        Attr->SubtractFromAttribute("Stamina", Amount);

        if (Attr->GetAttributeValue("Stamina") <= 0)
        {
            // Character is exhausted
        }
    }
}

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Developer Notes

  • All internal maps use FName handles for speed.
  • Modifiers and effects are executed in deterministic order.
  • C++ offers better performance for rapid-fire attribute updates (combat, stamina drain).
  • Every call is multiplayer-safe by default.