Blueprint Variant

Shows how to extend BlueprintAssets (Adds a FireSword based on an existing other sword’s visual Blueprint).

Blueprint Variant

The main part of this example is how a BlueprintVariant is used to extend the Blueprint of an existing sword.

class UBlueprintVariant_MyFireSwordVisual : UGothicModExt_BlueprintClassVariant
{
  default SourceClass = n"Blueprint'/Game/Items/Weapon/1Handed/BP_ItMw_1H_Sword_Bastard_02_Visual.BP_ItMw_1H_Sword_Bastard_02_Visual_C'";

  UFUNCTION(BlueprintOverride)
  void ModifyVariant()
  {
    // ...

    UNiagaraComponent FireFX = AddComponentToTemplate(UNiagaraComponent, n"FireFX");

    FireFX.Asset = BlueprintVariantAssets::GetFireSystem();
    FireFX.RelativeLocation = FVector(0.0, 0.0, 40.0);
    FireFX.RelativeScale3D = FVector(1.0, 1.0, 5.0);
  }
}

This snipped loads the Blueprint given in SourceClass, creates a new BlueprintClass and calls ModifyVariant, which you can override to modify the newly generated class. Here, a new NiagaraComponent is added to the new BlueprintClass.

Keep in mind that this will create a new class, it will not modify the SourceClass in any way.

You can then access your newly created BlueprintClass via

UBlueprintVariant_MyFireSwordVisual.DefaultObject.VariantClassPath

View this example on GitHub