Assmos tweaks/minor additions. (#32400)

* Adds pluoxium formation, makes fusion radioactive and nerfs it, makes noblium cost more energy.

* Review response.

* tanks now melt above 1 Million degrees Kelvin.

code/modules/atmospherics/environmental/LINDA_fire.dm

@@ -1,3 +1,5 @@
+
+
 /atom/proc/temperature_expose(datum/gas_mixture/air, exposed_temperature, exposed_volume)
 	return null
 
@@ -94,7 +96,7 @@
 			AT.fire_act(temperature, volume)
 	return
 
-
+#define INSUFFICIENT(path) (!location.air.gases[path] || location.air.gases[path][MOLES] < 0.5)
 /obj/effect/hotspot/process()
 	if(just_spawned)
 		just_spawned = FALSE
@@ -111,9 +113,7 @@
 	if((temperature < FIRE_MINIMUM_TEMPERATURE_TO_EXIST) || (volume <= 1))
 		qdel(src)
 		return
-
-	//Nothing to burn
-	if(!(location.air) || !(location.air.gases[/datum/gas/plasma] || location.air.gases[/datum/gas/tritium]) || !location.air.gases[/datum/gas/oxygen])
+	if(!location.air || (INSUFFICIENT(/datum/gas/plasma) && INSUFFICIENT(/datum/gas/tritium)) || INSUFFICIENT(/datum/gas/oxygen))
 		qdel(src)
 		return
 
@@ -190,3 +190,4 @@
 	. = ..()
 	if(!isliving(loc))
 		return INITIALIZE_HINT_QDEL
+#undef INSUFFICIENT