OO

[britlion]

This cannot be done with a linked list?
sprite.x(nr)
sprite.pointer(nr)
or similar?

Yes, I think that would work. We don't really have good garbage collected tools for dynamic memory structures at the moment - and that's one of the things SP1 uses, built into the code. It would be possible to build a sprite system with its own system, but that would be rather a shame to have it locked in there.