Ways to protect products in scripting languages ​​without source code encryption?

Question

Law in IT

I have a need to distribute my engine, but it is impossible to encrypt the sources (and there is not much sense), is it possible to protect yourself from the resale of the engine legally?
And what you need to do? Is an open license enough or is it worth registering somehow (for example, "LLC")?

Answer 1

I think if they want to modify the files, they will do it. And in general, you can make api to the engine for use in someone else's code. Yes, and fenced with documents and protect the code - these are different concepts.