>>You put them into different layers. Duh.
> Not possible if you follow your list. Only layer 27 is for "the dragon".

There's layer 26 for stuff behind dragons. Stuff includes dragons :-)

>> But I don't buy that we need that fine-grained control. Most objects work fine both before and after similar objects.
> But that fine-grained control for some very special corner cases is exactly the reason behind the request to scrap categories lnked to drawing order.

Well, I'm separating the z-position from miscellaneous stuff like does-grow that shouldn't have been tied with it. The drawing position is just a result from the ingame position. For fine-grained control of special cases there'll be plenty of room between the z-positions used by the standard objects. Apparently that means more room for dragons. That's fine, I like dragons. ;-) The engine will probably only impose two hardcoded z positions: The landscape at 0 and global particles at a yet-to-be determined number between 6 and 2147483646. As I wrote above: We will have to strike a balance between reserving enough layers for unforeseen uses and small, easy-to-remember numbers. Suggestions welcome.