To be used as the final step of this guide: https://github.com/LongerWarrior/UEAssetToolkitGenerator/wiki/Generating-FBX

copy_fbx_to_cas.py

from pathlib import Path
import shutil
import argparse

DEFAULT_TYPES = 'SMs,SKMs,AnimSeqs,AnimComps,AnimMonts'


def main(in_path, out_path, internal_name, types):
    in_path = Path(in_path)
    out_path = Path(out_path)
    types = types.split(',')

    for subdirectory in types:
        type_path = in_path / subdirectory / internal_name / "Content"
        for file in type_path.rglob('*.fbx'):
            out_file = out_path / "Game" / file.relative_to(type_path)
            print(f"Copying {file.relative_to(in_path)} to {out_file.relative_to(out_path)}")
            out_file.parent.mkdir(parents=True, exist_ok=True)
            shutil.copy2(file, out_file)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description="Copies only FBX files to your CAS output directory")
    parser.add_argument('indir', type=Path, help="CUE4Parse dump directory")
    parser.add_argument('outdir', type=Path, help="CAS json dump directory")
    parser.add_argument('--internalname', '-n', type=str, default="Game",
                        help="The internal name of the game, should be the same as what you used in CUE4Parse")
    parser.add_argument('--types', '-t', type=str, default=DEFAULT_TYPES,
                        help=f"Comma separated list of types without spaces (default: {DEFAULT_TYPES})")

    args = parser.parse_args()

    main(args.indir, args.outdir, args.internalname, args.types)