Fixes defibbed corpse not getting blind overlay despite being in crit.

Brain mobs that are beaten to death can still be inserted inside a brainless human corpse but defibbing the corpse cannot work (the brain is too damaged). On the other hand cloning that corpse will still work.
Deffibing a brainless corpse no longer gives "further attempts may be successful".
Fixes brain mob's container var not being nullified on Destroy().

code/game/objects/items/robot/robot_parts.dm

@@ -187,7 +187,7 @@
 				user << "<span class='warning'>The mmi indicates that their mind is currently inactive; it might change!</span>"
 				return
 
-			if(BM.stat == DEAD || BM.health <= config.health_threshold_dead)
+			if(BM.stat == DEAD || (M.brain && M.brain.damaged_brain))
 				user << "<span class='warning'>Sticking a dead brain into the frame would sort of defeat the purpose!</span>"
 				return
 

code/game/objects/items/weapons/defib.dm

@@ -488,9 +488,12 @@
 							failed = "<span class='warning'>[req_defib ? "[defib]" : "[src]"] buzzes: Resuscitation failed - Heart tissue damage beyond point of no return. Further attempts futile.</span>"
 						else if(total_burn >= 180 || total_brute >= 180)
 							failed = "<span class='warning'>[req_defib ? "[defib]" : "[src]"] buzzes: Resuscitation failed - Severe tissue damage makes recovery of patient impossible via defibrillator. Further attempts futile.</span>"
-						else if(H.get_ghost() || !H.getorgan(/obj/item/organ/internal/brain))
+						else if(H.get_ghost())
 							failed = "<span class='warning'>[req_defib ? "[defib]" : "[src]"] buzzes: Resuscitation failed - No activity in patient's brain. Further attempts may be successful.</span>"
-
+						else
+							var/obj/item/organ/internal/brain/BR = H.getorgan(/obj/item/organ/internal/brain)
+							if(!BR || BR.damaged_brain)
+								failed = "<span class='warning'>[req_defib ? "[defib]" : "[src]"] buzzes: Resuscitation failed - Patient's brain is missing or damaged beyond point of no return. Further attempts futile.</span>"
 
 						if(failed)
 							user.visible_message(failed)

code/modules/mob/living/carbon/brain/MMI.dm

@@ -61,9 +61,9 @@
 		newbrain.brainmob = null
 		brainmob.loc = src
 		brainmob.container = src
-		if(brainmob.health > config.health_threshold_dead)
-			brainmob.stat = CONSCIOUS
-			dead_mob_list -= brainmob //Update dem lists
+		if(!newbrain.damaged_brain) // the brain organ hasn't beaten to death.
+			brainmob.stat = CONSCIOUS //we manually revive the brain mob
+			dead_mob_list -= brainmob
 			living_mob_list += brainmob
 
 		brainmob.reset_perspective()

code/modules/mob/living/carbon/brain/brain.dm

@@ -2,7 +2,7 @@
 
 /mob/living/carbon/brain
 	languages = HUMAN
-	var/obj/item/container = null
+	var/obj/item/device/mmi/container = null
 	var/timeofhostdeath = 0
 	var/emp_damage = 0//Handles a type of MMI damage
 	has_limbs = 0
@@ -21,6 +21,7 @@
 		if(stat!=DEAD)	//If not dead.
 			death(1)	//Brains can die again. AND THEY SHOULD AHA HA HA HA HA HA
 		ghostize()		//Ghostize checks for key so nothing else is necessary.
+	container = null
 	return ..()
 
 /mob/living/carbon/brain/update_canmove()

code/modules/mob/living/carbon/brain/brain_item.dm

@@ -11,6 +11,7 @@
 	origin_tech = "biotech=4"
 	attack_verb = list("attacked", "slapped", "whacked")
 	var/mob/living/carbon/brain/brainmob = null
+	var/damaged_brain = 0 //whether the brain organ is damaged.
 
 /obj/item/organ/internal/brain/Insert(mob/living/carbon/M, special = 0)
 	..()
@@ -58,6 +59,7 @@
 	brainmob << "<span class='notice'>You feel slightly disoriented. That's normal when you're just a brain.</span>"
 
 /obj/item/organ/internal/brain/attackby(obj/item/O, mob/user, params)
+	user.changeNext_move(CLICK_CD_MELEE)
 	if(brainmob)
 		O.attack(brainmob, user) //Oh noooeeeee
 

code/modules/mob/living/carbon/brain/death.dm

@@ -3,7 +3,7 @@
 		return
 	stat = DEAD
 
-	if(!gibbed && container && istype(container, /obj/item/device/mmi))//If not gibbed but in a container.
+	if(!gibbed && container)//If not gibbed but in a container.
 		var/obj/item/device/mmi = container
 		mmi.visible_message("<span class='warning'>[src]'s MMI flatlines!</span>", \
 					"<span class='italics'>You hear something flatline.</span>")
@@ -12,7 +12,7 @@
 	return ..()
 
 /mob/living/carbon/brain/gib(animation = 0)
-	if(container && istype(container, /obj/item/device/mmi))
+	if(container)
 		qdel(container)//Gets rid of the MMI if there is one
 	if(loc)
 		if(istype(loc,/obj/item/organ/internal/brain))

code/modules/mob/living/carbon/brain/life.dm

@@ -8,15 +8,19 @@
 /mob/living/carbon/brain/handle_environment(datum/gas_mixture/environment)
 	return
 
-/mob/living/carbon/brain/proc/handle_temperature_damage(body_part, exposed_temperature, exposed_intensity)
-	return
-
 /mob/living/carbon/brain/update_stat()
 	if(status_flags & GODMODE)
 		return
-	if(stat != DEAD)
-		if(health <= config.health_threshold_dead)
+	if(health <= config.health_threshold_dead)
+		if(stat != DEAD)
 			death()
+		var/obj/item/organ/internal/brain/BR
+		if(container && container.brain)
+			BR = container.brain
+		else if(istype(loc, /obj/item/organ/internal/brain))
+			BR = loc
+		if(BR)
+			BR.damaged_brain = 1 //beaten to a pulp
 
 /* //currently unused feature, since brain outside a mmi is always dead.
 /mob/living/carbon/brain/proc/handle_brain_revival_life()

code/modules/mob/living/death.dm

@@ -36,7 +36,6 @@
 
 /mob/living/death(gibbed)
 	unset_machine()
-	reset_perspective(null)
 	timeofdeath = world.time
 	tod = worldtime2text()
 	if(mind)
@@ -50,7 +49,8 @@
 	stunned = 0
 	weakened = 0
 	sleeping = 0
-	update_sight()
+	blind_eyes(1)
+	reset_perspective(null)
 	hide_fullscreens()
 	update_damage_hud()
 	update_health_hud()

code/modules/mob/transform_procs.dm

@@ -320,7 +320,7 @@
 	for(var/t in organs)
 		qdel(t)
 
-	var/mob/living/silicon/robot/R = new /mob/living/silicon/robot( loc )
+	var/mob/living/silicon/robot/R = new /mob/living/silicon/robot(loc)
 
 	// cyborgs produced by Robotize get an automatic power cell
 	R.cell = new(R)