This repository provides a sample implementation for custom gravity in Godot 4.
Check out the video I made about this implementation too!
A Gravity object, e.g. PointGravity, is attached to objects that exhibits gravitational forces. It requires a BoundingShape (on collision layer 2). Physical gravity wells also require a FalloffModel.
A BalancePoint is attached to a gravity-affected object. The object collects gravitational forces acting upon it. Its owner (e.g. Player.gd) uses this information to provide gravitationally correct controls.