Simple issue with z-index [SOLVED]

Just a super simple tunnel with perspective, the only problem is that it is only possible to sort entities (w/ for each ordered) ascending or descending, so I´m unable to send the recently created overlapping circles to their correct z position (as seen in the gif), I would like them to be behind the bigger circles, to give kind of a "tunnel effect".

This could be easily solved if there would be a way to set an specific z-index, but it is not the case (I guess this feature´s still in the to-do list...)

Any help would be greatly appreciated!

Event sheet

Circle spawner with sine continuously creates growing circles, as simple as that. Also, this might be a bit cpu intensive so I would happily accept optimisation tips!

If you put the most recent circles behind the older, larger ones then they won't even be visible. You should use rings instead of circles. To get the z-ordering right, just send the newly created object immediately to the back -- there's no need to continuously order them.

Oh you´re totally right. I was wondering if I should have used rings from the beginning, though they might require to be way bigger sprites, I´ll see, thanks!