UE4 is 'source available' but not Free or Open Source. You certainly can't use a snippet of their code in another project. It is basically the same as the Mathw

UE4 is 'source available' but not Free or Open Source. You certainly can't use a snippet of their code in another project. It is basically the same as the Mathworks giving almost free licences to universities to build mind share, knowing that anything serious requires big cash outlays for licencing.