Legion core healing nerf + legion core fix (#11068)

* fixed being able to preserve inert cores

* balance change

* Update buffs.dm

* Update regenerative_core.dm

* made the cooldown not ridiculously long due to an oversight

* fixes

* nitpick

code/datums/status_effects/buffs.dm

@@ -548,6 +548,7 @@
 	status_type = STATUS_EFFECT_REPLACE
 	alert_type = /atom/movable/screen/alert/status_effect/regenerative_core
 	var/power = 1
+	var/duration_mod = 1
 	var/alreadyinfected = FALSE
 
 /datum/status_effect/regenerative_core/on_apply()
@@ -557,10 +558,11 @@
 		alreadyinfected = TRUE
 	ADD_TRAIT(owner, TRAIT_IGNOREDAMAGESLOWDOWN, "legion_core_trait")
 	ADD_TRAIT(owner, TRAIT_NECROPOLIS_INFECTED, "legion_core_trait")
-	if(owner.z == 5)
-		power = 2
-	owner.adjustBruteLoss(-50 * power)
-	owner.adjustFireLoss(-50 * power)
+	if(is_mining_level(owner.z))
+		power = 5
+		duration_mod = 2
+	owner.adjustBruteLoss(-20 * power)
+	owner.adjustFireLoss(-20 * power)
 	owner.cure_nearsighted()
 	owner.ExtinguishMob()
 	owner.fire_stacks = 0
@@ -572,7 +574,7 @@
 		var/mob/living/carbon/human/humi = owner
 		humi.coretemperature = humi.get_body_temp_normal()
 	owner.restoreEars()
-	duration = rand(150, 450) * power
+	duration = rand(150, 450) * duration_mod
 	return TRUE
 
 /datum/status_effect/regenerative_core/on_remove()

code/modules/mining/equipment/regenerative_core.dm

@@ -15,7 +15,9 @@
 	if(C.preserved)
 		to_chat(user, "<span class='notice'>[M] is already stabilised.")
 		return
-
+	if(C.inert)
+		to_chat(user, "<span class='notice'>[M] is inert, it's not worth it to stabilize a nonfunctional one.")
+		return
 	C.preserved()
 	to_chat(user, "<span class='notice'>You inject [M] with the stabilizer. It will no longer go inert.</span>")
 	qdel(src)
@@ -42,7 +44,6 @@
 		go_inert()
 
 /obj/item/organ/regenerative_core/proc/preserved(implanted = 0)
-	inert = FALSE
 	preserved = TRUE
 	update_icon()
 	desc = "All that remains of a hivelord. It is preserved, allowing you to use it to heal completely without danger of decay."