/diy/ — What's the best way to make a folding gaming table?

File: table.jpg (403 KB, 1206x1216)

Basically, I want something like picrel that can fold in half for storage and transport. Recessed play surface, skirt rails for accessories, dining table cover, etc. There are some offerings online (and I've seen some diy solutions), but they all seem to fail on at least one point.

In any case, what is the best way to handle the legs? I'm mainly concerned with maintaining rigidity in the center section. I don't want it to sag or wobble significantly in the center.