UAttributeSet::PreGameplayEffectExecute

function GameplayAbilities Since unknown

#include "AttributeSet.h"

Access: public Specifiers: virtual

Description

Called immediately before a GameplayEffect execution modifies an attribute's base value, giving the AttributeSet a chance to inspect or reject the change. Return false to throw out the modification entirely.

Caveats & Gotchas

• Only fires for 'execute' modifications (instant effects), not for duration-based effects that apply their magnitude through an aggregator; use PreAttributeChange for those.
• Data.EvaluatedData.Magnitude can be modified in place before returning true, letting you clamp or rescale the incoming change.

Signature

virtual bool PreGameplayEffectExecute(struct FGameplayEffectModCallbackData &Data) { return true; }

Parameters

Name	Type	Description	Default
Data	FGameplayEffectModCallbackData&	Callback context describing the effect execution in progress, including the target attribute and evaluated magnitude.	—

Return Type

bool

Example

Reject negative damage C++

bool UMyHealthSet::PreGameplayEffectExecute(FGameplayEffectModCallbackData& Data)
{
    if (Data.EvaluatedData.Attribute == GetDamageAttribute() && Data.EvaluatedData.Magnitude < 0.f)
    {
        return false;
    }
    return true;
}

Version History

Introduced in: unknown

Version	Status	Notes
5.6	stable	—

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