The loader doesn't actually work #1
Description
_Load calls base._Load, but ResourceFormatLoader doesn't actually implement this method, so it just returns null for all resources. I happened upon your code while searching for a solution to a different problem, and I'm not sure how to fix your case. My task was to remap resources from res:// to another, user-specified folder, and what I did was to get an absolute path of the requested resource, and then call ResourceLoader.Load with absolute path, bypassing my own loader. But since your loader needs to check all loaded files, this hack won't work, and will just lead to endless recursion.