Re-adds appendicitis (#10000)

Time to piss off 99 med mains.

code/modules/organs/internal/_internal.dm

@@ -8,6 +8,7 @@
 	var/toxin_type = "undefined"
 	var/relative_size = 25 //Used for size calcs
 	var/on_mob_icon
+	var/list/possible_modifications = list("Normal","Assisted","Mechanical") //this is used in the character setup
 
 	min_broken_damage = 10 //Internal organs are frail, man.
 

code/modules/organs/internal/appendix.dm

@@ -2,4 +2,49 @@
 	name = "appendix"
 	icon_state = "appendix"
 	parent_organ = BP_GROIN
-	organ_tag = BP_APPENDIX
+	organ_tag = BP_APPENDIX
+	possible_modifications = list ("Normal","Removed")
+	var/inflamed = 0
+
+/obj/item/organ/internal/appendix/update_icon()
+	..()
+	if(inflamed)
+		icon_state = "[icon_state]inflamed"
+		name = "inflamed [name]"
+
+/obj/item/organ/internal/appendix/process()
+	..()
+	if(inflamed && owner)
+		inflamed++
+		if(prob(5))
+			if(owner.can_feel_pain())
+				owner.custom_pain("You feel a stinging pain in your abdomen!")
+				owner.visible_message("<B>\The [owner]</B> winces slightly.")
+				var/obj/item/organ/external/O = owner.get_organ(parent_organ)
+				if(O)
+					O.add_pain(10)
+		if(inflamed > 200)
+			if(prob(3))
+				take_internal_damage(0.1)
+				if(owner.can_feel_pain())
+					owner.visible_message("<B>\The [owner]</B> winces painfully.")
+					var/obj/item/organ/external/O = owner.get_organ(parent_organ)
+					if(O)
+						O.add_pain(25)
+				owner.adjustToxLoss(1)
+		if(inflamed > 400)
+			if(prob(1))
+				germ_level += rand(2,6)
+				owner.vomit()
+		if(inflamed > 600)
+			if(prob(1))
+				if(owner.can_feel_pain())
+					owner.custom_pain("You feel a stinging pain in your abdomen!")
+					owner.Weaken(10)
+
+				var/obj/item/organ/external/E = owner.get_organ(parent_organ)
+				E.sever_artery()
+				E.germ_level = max(INFECTION_LEVEL_TWO, E.germ_level)
+				owner.adjustToxLoss(25)
+				removed()
+				qdel(src)