[2.0.73] Setting required fluid per mining operation to 0.1 shows as 0.0

[Quezler]

When a resource has `minable.fluid_amount` set to 1 you can see in the tooltip of a drill placed on it that it takes 0.1 per mining operation, but when you select the resource entity it shows 0.0, so there is a rounding error somewhere.

Steps to reproduce:
- change the `minable.fluid_amount` of uranium from 10 to 1
- place a drill on an uranium patch
- look at the sidebar of the drill
- look at the sidebar of the ore

Expected behavior:
- the sidebar of the ore also shows as 0.1

[Rseding91]

Thanks for the report however this is correct. A "mining operation" on a drill is 10 ores so it requires 0.1 fluid for 10 ores. On the ore itself it requires only 0.1 / 10 fluid per individual ore or 0.01 fluid. This rounds down and shows 0 in the tooltip.

[Quezler]

Thanks for the report however this is correct. A "mining operation" on a drill is 10 ores so it requires 0.1 fluid for 10 ores. On the ore itself it requires only 0.1 / 10 fluid per individual ore or 0.01 fluid. This rounds down and shows 0 in the tooltip.

but that would mean the uranium drill & ore tooltips are wrong then since it shows 1 for both, so i still kinda feel like this is a rounding error:

[Rseding91]

Hmm, actually I was wrong. They are both using the / 10 value however one just puts "the number" and one through a bunch of generic name-and-count logic eventually converts to an integer before showing.

[Rseding91]

I looked into this more and I don't see a solution that makes it "work" nicely in all cases. The GUI and logic was never meant to have fluid amounts that small because it starts adding decimals to a bunch of places - and decimals are by their nature repeating/long - so no number of decimals is ever "correct" for all cases.

The value to be shown is 1 / 10 which can't be represented in binary floating point format and so is actually 0.099999 and some change. This gets rounded down and shown as 0 in the GUI with 1 decimal place.

The solution is to not make ores take that little fluid.