Your idea sounds good, but do not quite understand, Make that a character (invisible) se mueva a traves del pipe y que un objeto que contenga la animación siga al personaje invisible with lua? But how controlled the scaling problem? the animation would follow being a size 1:1
I think that i will scale the images/frames of the cloned character (the one with the animation) with external program (there are 5 scenes with this system with different sizes).
Now, i have this,
http://youtu.be/4KDCN0klrMo, with a "scale disabled" cloned character.
I want use the move action, because a frame by frame animation dont give this smoothness in the movement.
I will post the outcome