How to create a custom Effector2D

Hi,

I am currently working with a Tilemap and the PlatformEffector2D. I would like to create a situation where some GameObjects are able to move through platforms in one direction, and other GameObjects are able to move through the same platforms in a different direction.

The current PlatformEffector2D does not allow multiple instances of the component to be added.

This post here: https://forum.unity.com/threads/area-effector-2d-with-varying-force-strength.467482/#post-3042641 states you can write your own custom Effector, but I'm unsure how to proceed.

I can't browse the code for the existing Effectors are they are in C++. I tried creating my own class which extended Effector2D, to try and understand how it might interact, but I cannot add this class to a GameObject as it gives the following error: "The script don't inherit a native class that can manage a script".

Any help would be much appreciated.

Cheers