Inventory2/player/PushbackArea.cs

public partial class PushbackArea : Area3D
{
	[Export] public float PushForce { get; set; } = 24.0f;

	Player _player;
	float _radius;
	public override void _Ready()
	{
		_player = GetParent<Player>();
		_radius = ((CapsuleShape3D)GetNode<CollisionShape3D>("CollisionShape3D").Shape).Radius;
	}

	public override void _PhysicsProcess(double delta)
	{
		foreach (var area in GetOverlappingAreas()) {
			var offset = (GlobalPosition - area.GlobalPosition) with { Y = 0 };
			var directions = offset.Normalized();
			var distance   = offset.Length() / (_radius * 2);
			var force = (1 - distance) * PushForce * (float)delta;
			_player.Velocity += directions * force;
		}
	}
}