Connected models. (they should look like full-block mana pools. They're just cosmetic.) logic:

If there is a bathtub on any face of another bathtub, do not render the connecting faces. (Mana is considered a face.) Corners should still be rendered.
They won't store mana.
If there is a square of bathtubs, the edge between them should not be rendered.

If you want better detail, I can explain
I just was getting really fed up with trying to do modeling, which I have no idea how to do, period

allow sitting in it, like a minecart?

Like a mana pool.
On Sun, Jan 3, 2016 at 4:39 AM Azutte [email protected] wrote:

allow sitting in it, like a minecart?

—
Reply to this email directly or view it on GitHub
#34 (comment)
.

You can stand in them like a hopper. But not sit in them like a minecart.

I don't think you can sit in regular mana pools.