really, i dont think that sphere with huge mass would be looking like explotion... the larger radius you would change, the large center would move up

sorry for my english, i'd try to make shema

1)

q 0
------

q - object
0 - little sphere

2)

as radius increased

|------|
\----/
q \--/
--

something like this, so sphere wouldnt touch near object


my solution is to make mix from lite-c's "c_scan" and newton's "add_force": we scan for near objects, calculate the force and apply it, as i made in my wrapper