How to use sluices with liquids

[flareofghast]

Hi,
I think I am having trouble with my sluices, specifically lava with stone sluice. I have grates enabled on all connections but the only sluices that seem to generate loot are the ones where the lava drops down. Is this correct?
Is there a better way to do it?

[flareofghast]

I think I figured out the why, not sure if it's what you intended.
I believe the flow is calculated on the horizontal plane in line with the block, but the fluid flows on top of the block, so when you have sluices together with grates they don't detect the liquid because it's looking for the lava next to the block not on top.
I think to replicate real sluices it should check for flowing liquid on top with a grate not the falling liquid to it's sides.
Possibly for flow it should check liquid on top and number of grates? Or if you want to ensure that the liquid is actually flowing and not blocked by other blocks you could check the cardinal dirs above to ensure the same liquid is there.

[flareofghast]

created this #351