Good day.
I am not sure if this is the right place to ask this question.
I have copied and modified two existing epic games unreal engine PCG nodes to use some of my own custom code to create what is known as a hexagonal close packing 3D-2D grid or matrix of points. This code exists within a very small plugin I have created to be used in the Unreal engine application.
These modifications keep to a large extent the existing code that is copyrighted to epic games with the text
// Copyright Epic Games, Inc. All Rights Reserved.
that is at the top of the code for these nodes.
What I am asking is, as it is not clear to me in the EULA and elsewhere, when I copy and modify the existing code of any Epic Games Unreal Engine engine PCG node, and wish to submit it free on Github or as a epic games market place plugin for others to use, where do I stand in regards to copyright rules. I wish to submit this plugin as a GNU license, but because it is a modification of an existing Epic games product that retains a high percentage of the existing code, I don’t know if I can do this.
If any one can help me on this, it would be much appreciated.
Thank you.