Im making a sort of remake of Super Monkey Ball 2 (Gamecube) / Neverball (PC) is simillar too, but i have already encountred problems:
In SMB (Super Monkey Ball 2) or Neverball, you dont move the ball, you move all the level, and the ball just use gravity for roll.
But in SMB / Neverball, the Level rotation pivot point is allways placed on bottom of the ball, for get allways the same rotation force, and for not get catapulted.
This is my problem, i have already vertex parented an empty to my ball, but i dont know how to make my empty the rotation pivot for the Level (dont forget, the empty may move with the ball, but the level can only rotate):
I give you some pictures:
Here is my main scene, the level is actually just a plane for testing.
You can see the vertex parented empty at bottom of the ball (the empty is vertex parented to the center of the ball).
In the game, if my ball is here, the level must rotate like this:
If you have a idea for making this (a sort of rotation-only parent...) i will be verry happy.