public float gravity;
    public bool invertGravity;

    public void Attract(Rigidbody rb)
    {
        Vector3 direction = (transform.position - rb.position).normalized;

        if (invertGravity) direction = -direction;

        Vector3 gravityForce = direction * gravity;

        rb.AddForce(gravityForce, ForceMode.Acceleration);
    }