fission rectors but with less goto (#37435)

* mm code

* size detection and setup

* it actually compiles now

* smore changes

* fixes, additions

* making things buildable pt 1

* buildability pt2

* grammar, because i was making this at 3 in the morning

* file seperation and fixes

* adds a new reagent

* placeholder sprites pt1

* conflict resolution (i hope)

* more icons, reactor assembly works on spawned obj

need to add things to material construction menus, as well as make datum code a bit better.

* rework to fuel mechanics, constructability additions

* fixes, changes, stuff

* cargo orders, construciton, bugs

* runtime fixes, errors and isues. it just werks.

* Update datums.dm

* ENGAGE HYPERSHITCODE THRUSTERS!!!1!111!!

* suggested changes pt1

* changes pt2

goto goto goto while true

* SCRAM actually works now. better controller examine text.

* FIX IT FIX IT FIX IT FIX IT

* the candle the burns twice as long burns half as bright (fuel number change)

* nerf starter

* new cargo order

* reactor UI

* UI refactor

* reactor UI functional

* construction fixes

* fuel creation UI

* deconstruction

* adjustable units

* new fuelrod subtype

* fuel recycling

* rads

* meltdown framework

* rads, guide

* finishing touches

* UI autoclose, explosion changes

* oops wrong side

* nevermind i'm dumb

* explosion tweak

* ex_act

* seconds are 2 digits

* more rod icons

* more heatcap

* TWO SECONDS

* file rename

* updated control rod code for 2 secs

* sprite changes, system changes, ui changes

* reactor controller sounds

* scram sound manually

* post-review code fixes

* BEGONE SUBSYSTEM, CURSE YE TO THE SHADOWS

* movment fix

* UI recolred to look more similar

* case icon updates

* enhanced detection of reactor construction, fixed runtimes

* fixes lmao

* changed sprites, overlay reworks

* changed controller sprites

* nu reactor ui

* new fuel machine UI

* more ui, expanded funcs, changed radium's role

* regenerate calcium nerf

* meltdowns are slower

* nu sprites

* areas, runtimes, guides, oh my!

* new reagent! runtime fix!

* removed old files

* updated corium, tweaked meltdowns

* removed gotos

---------

Co-authored-by: west3436 <66280799+west3436@users.noreply.github.com>

code/modules/mob/living/carbon/human/life/handle_environment.dm

@@ -65,6 +65,8 @@
 
 	if(environment.molar_density(GAS_PLASMA) > MOLES_PLASMA_VISIBLE / CELL_VOLUME)
 		plasma_effects()
+	if(environment.molar_density(GAS_RADON)*CELL_VOLUME > 0.025)
+		radon_effects()
 
 // Helper proc to map body temperatures to its corresponding heat/cold damage value
 /mob/living/carbon/human/proc/get_body_temperature_damage(var/temperature)