Since AngelScript doesn't load the files itself, it cannot support include directly. However, you easily write a simple preprocessor that scans for #include directives and if found adds a second script section with the included file.

When the preprocessor finds an #include it could easily remove it from the original script by substituting the first two characters for //, making the line a comment. That way AngelScript will still be able to compile the script without problems.

Read the following article for more info: Using #include with AngelScript

Regards,
Andreas

It's even easier than that.