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[Puzzlemaker]

Yo.

Suggestions for flowing stuff and temperature.

I have done a little flow work(I helped a guy who was coding some cell-based air movement system that also simulated heat) and I thought I would share some ideas... A lot of these may not be valid, but I might as well.

Temperature... Squares with a liquid could have a temperature (maybe 0-7, like liquid).  The temperature of the liquid is based on the temperature stored.  For example, a puddle of heated water that has a temperature of 5, but is only filled up 1 unit out of seven.  It's 1/7th of a full square of water, so the temperature of the the puddle of water is actually only 5/7ths (with 7 being as hot as possible).  This allows water and magma to carry heat in a realistic fashion and expel heat into the surroundings more realistically too, based on the amount of liquid + the temperature of the liquid.  A small puddle of magma wouldn't heat up a square as much as a 7/7 puddle of magma.  I don't know how hard it would be to implement or how CPU intensive it would be.

[Draco18s]

DF already calculates temperature in some fassion, but assuming this adds more detail, then you're adding another byte of data per tile AND another flow.

[Cosmonot]

Flows are something like the second most expensive feature in the game, behind pathfinding, so if temperature isn't already using a flow then it's something you'd have to think about carefully before implementing.

[Puzzlemaker]

When a liquid flows, it will take the temperature with it; the temperature wont flow by itself, it simply stays with the liquid.

[Align]

According to the interview, the flows aren't all that taxing...