Reagent code issues

[QuietlyWhisper]

While looking at the issue with tricordrazine, we found similar code issues with the iron reagent

• reagents effects are not properly scaling with reagent metabolize rate
• Reagents will try to heal damage that doesnt exist, which reduces overall healing on one type because it tries to split between all damage types in the group
• Reagents will always use the last metabolizing rate of the reagent, according to the organ
  • I.e the heart metabolizes medicine, poison, narcotics, and will always take the metabolism rate of the last defined reagent tag on the organ, which for iron for example, is poison

Related to #26618

Maints can read more specifics @ https://discord.com/channels/310555209753690112/1193403928096821358/1224899739905163357

[SlamBamActionman]

For the second bulletpoint, this could be/is intended. The lineup of specialized Brute meds work specifically because Bicardine splits its healing across the various damage types.

While I am not opposed to reworking the meds to be more reliable it might also be a guidebook issue. It's really not obvious that "Heals 3 Brute" or "Heals 3 Heat" do not equal the same individual heal amounts.

[K-Dynamic]

While I am not opposed to reworking the meds to be more reliable it might also be a guidebook issue. It's really not obvious that "Heals 3 Brute" or "Heals 3 Heat" do not equal the same individual heal amounts.

It's misleading since it's basically a hidden mechanic

(Also I'm not sure if I ever came across a 'heal X heat' statement for most meds because caustic is part of heat - so it's weird heat meds heal all other heat damage equally, as though it's a description issue)

[QuietlyWhisper]

For the second bulletpoint, this could be/is intended. The lineup of specialized Brute meds work specifically because Bicardine splits its healing across the various damage types.

While I am not opposed to reworking the meds to be more reliable it might also be a guidebook issue. It's really not obvious that "Heals 3 Brute" or "Heals 3 Heat" do not equal the same individual heal amounts.

If this was intended, I'd mark it as a balance issue because a lot of chems are underpowered due to it, they should at minimum split into the existing damage types and not just waste away. Tricordrazine is ridiculously underutilised due to it's chemical cost not being worth less than 1 point of healing per unit for single damage types.

[QuietlyWhisper]

It's misleading since it's basically a hidden mechanic

It's also extremely misleading in the guidebook, yes. Even more so when you consider that because reagent scaling is also borked, the healing value it per metabolism tick rather than per unit. I.e 0.5 = 1u of effect in most chems