[MIRROR] Halon combustion releases resin foam and pluoxium. Halon is formed by electrolysing BZ, and the reaction is much quicker.

[Steals-The-PRs]

Mirrored on Nova: NovaSector/NovaSector#1773
Original PR: tgstation/tgstation#81887

About The Pull Request

Original PRs: #69196 and #74472

Applies both of those PRs to this PR.
Doesn't apply the firefighter backpack halon requirement changes since absolutely no one liked that.

Halon combustion will combust into 2.5 moles of pluoxium per mole of halon consumed, and release atmos resin. The resin will not only help choke out fires, but it will also help seal rooms from fires, or seal fires from other rooms. Halon formation now requires electrolysing BZ instead of CO2 and N2O. The electrolysis is much faster. 2 moles of halon and 0.2 moles of oxygen is released with 91.2321kJ of thermal energy per mole of BZ electrolysed. Halon combustion starts at 343.15K instead of 373.15K.

Resin foam no longer consumes halon and pluoxium. The resin foam released from halon combustion is a special type that lasts longer to ensure the halon can spread and not block itself when combusting.

Why It's Good For The Game

I have only seen one, maybe two rounds ever where someone created halon, and 0 rounds where it was actually used. The main reason why it (at least I think) isn't used is because it takes a rather large amount of effort and time for something that is only going to be used in a fraction of rounds. Preemptively spending that much effort every round, where most of the time it doesn't get used, will get boring and repetitive for pretty much anyone very quickly. Creating it as a response to a fire is going to take too long because you need to build a special cooling chamber and a contraption to ensure low pressure, and then wait for it to react slowly.

This PR tries to resolve this by changing the requirement to BZ, making the electrolysis much quicker and scales with temperature instead of inversely with pressure, and making it combust into pluoxium. BZ is a gas that takes a little effort to make, but is probably the most frequently made gas and is likely already available when there is an emergency. With the BZ requirement combined with electrolysis speed change, creating halon is just a matter of dumping BZ into an electrolyser, turning the electrolyser on then extracting the halon, which can be reasonably done as a response to a plasmaflood or whatever.

Halon combusting into pluoxium also makes halon not a dead end on the tree of gases. By letting halon combust into pluoxium, atmospheric technicians may persue halon to create pluoxium, which should let it feel less of a waste of time if someone decides to make it and there's no emergency that calls for the use of it. Halon combustion releasing resin foam conveys a visual effect that it is strong at choking fires. Reducing the temperature allows it to react earlier to a spreading fire, so it can block it before it spreads.

Changelog

🆑 Pickle-Coding
balance: Halon combustion releases 2.5 moles of pluoxium per mole of halon consumed.
balance: Halon combustion no longer releases carbon dioxide.
balance: Halon combustion releases resin foam.
balance: Halon formation requirements changed to require electrolysing BZ instead of N2O and CO2.
balance: Halon formation changed to no longer slow down at higher pressures. It instead accelerates at higher temperatures. It is much faster overall.
balance: Halon formation releases 91.2321kJ of thermal energy per mole of halon consumed.
/:cl: