Get Blueprint Animation variables in C++?

Development Pipeline & Plugins Editor Scripting
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4

I have two options for you. First is the way I suggested already. It’s the answer usually given:

…

Second Option:

    if (USkeletalMeshComponent *Mesh = MyActor->FindComponentByClass<USkeletalMeshComponent>())
    {
        if (UAnimInstance *AnimInst = Mesh->GetAnimInstance())
        {
            UFloatProperty* MyFloatProp = FindField<UFloatProperty>(AnimInst->GetClass(), AnimPropName);
            if (MyFloatProp != NULL)
            {
               float FloatVal = MyFloatProp->GetPropertyValue_InContainer(AnimInst);
               MyFloatProp->SetPropertyValue_InContainer(AnimInst, 180.0f);
               FloatVal = MyFloatProp->GetPropertyValue_InContainer(AnimInst);
            }
        }
    }

I put a way to get and to set in there.

This technique also works with regular blueprints, not just anim blueprints and with other types:

   UBoolProperty* BoolProp = FindField<UBoolProperty>(MyActor->GetClass(), PropName);
    if (BoolProp != NULL)
    {
        bool BoolVal = BoolProp->GetPropertyValue_InContainer(Actor1);
        BoolProp->SetPropertyValue_InContainer(Actor1, true);
    }

The names are just simple FName data types:

FName PropName = TEXT("MyBoolVariable");
FName AnimPropName = TEXT("MyFloatVariable");

Here’s the source I got it from: