More work on adjusting/tweaking/fixing the limb port to make it functional.

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

@@ -1,11 +1,9 @@
 /mob/living/carbon/human/gib()
 
 	for(var/obj/item/organ/I in internal_organs)
-		var/obj/item/organ/current_organ = I.remove()
-		if(current_organ)
-			if(istype(loc,/turf))
-				current_organ.throw_at(get_edge_target_turf(src,pick(alldirs)),rand(1,3),30)
-			current_organ.removed(src)
+		I.removed()
+		if(istype(loc,/turf))
+			I.throw_at(get_edge_target_turf(src,pick(alldirs)),rand(1,3),30)
 
 	for(var/obj/item/organ/external/E in src.organs)
 		if(istype(E, /obj/item/organ/external/chest))

code/modules/mob/living/carbon/human/human_organs.dm

@@ -64,10 +64,11 @@
 
 	for (var/organ in list("l_leg","l_foot","r_leg","r_foot"))
 		var/obj/item/organ/external/E = organs_by_name[organ]
-		if (E.status & ORGAN_DESTROYED)
-			stance_damage += 2 // let it fail even if just foot&leg
-		else if (E.is_malfunctioning() || (E.is_broken() && !(E.status & ORGAN_SPLINTED)) || !E.is_usable())
-			stance_damage += 1
+		if(E)
+			if (E.status & ORGAN_DESTROYED)
+				stance_damage += 2 // let it fail even if just foot&leg
+			else if (E.is_malfunctioning() || (E.is_broken() && !(E.status & ORGAN_SPLINTED)) || !E.is_usable())
+				stance_damage += 1
 
 	// Canes and crutches help you stand (if the latter is ever added)
 	// One cane mitigates a broken leg+foot, or a missing foot.

code/modules/mob/living/carbon/human/species/species.dm

@@ -142,7 +142,10 @@
 
 /datum/species/proc/create_organs(var/mob/living/carbon/human/H) //Handles creation of mob organs.
 
-	//Trying to work out why species changes aren't fixing organs properly.
+	for(var/obj/item/organ/organ in H.contents)
+		if((organ in H.organs) || (organ in H.internal_organs))
+			del(organ)
+
 	if(H.organs)                  H.organs.Cut()
 	if(H.internal_organs)         H.internal_organs.Cut()
 	if(H.organs_by_name)          H.organs_by_name.Cut()

code/modules/mob/mob.dm

@@ -593,7 +593,7 @@ var/list/slot_equipment_priority = list( \
 		if(H.health - H.halloss <= config.health_threshold_softcrit)
 			for(var/name in H.organs_by_name)
 				var/obj/item/organ/external/e = H.organs_by_name[name]
-				if(H.lying)
+				if(e && H.lying)
 					if(((e.status & ORGAN_BROKEN && !(e.status & ORGAN_SPLINTED)) || e.status & ORGAN_BLEEDING) && (H.getBruteLoss() + H.getFireLoss() >= 100))
 						return 1
 						break

code/modules/organs/organ.dm

@@ -226,29 +226,29 @@ var/list/organ_cache = list()
 					take_damage(10,0)
 					return
 
-/obj/item/organ/proc/removed(var/mob/living/carbon/human/target,var/mob/living/user)
+/obj/item/organ/proc/removed(var/mob/living/user)
 
-	if(!istype(target))
+	if(!istype(owner))
 		return
 
-	target.internal_organs_by_name[organ_tag] = null
-	target.internal_organs_by_name -= organ_tag
-	target.internal_organs -= src
+	owner.internal_organs_by_name[organ_tag] = null
+	owner.internal_organs_by_name -= organ_tag
+	owner.internal_organs -= src
 
-	var/obj/item/organ/external/affected = target.get_organ(parent_organ)
-	affected.internal_organs -= src
+	var/obj/item/organ/external/affected = owner.get_organ(parent_organ)
+	if(affected) affected.internal_organs -= src
 
-	loc = target.loc
+	loc = owner.loc
 	rejecting = null
 	var/datum/reagent/blood/organ_blood = locate(/datum/reagent/blood) in reagents.reagent_list
 	if(!organ_blood || !organ_blood.data["blood_DNA"])
-		target.vessel.trans_to(src, 5, 1, 1)
+		owner.vessel.trans_to(src, 5, 1, 1)
 
-	if(target && user && vital)
-		user.attack_log += "\[[time_stamp()]\]<font color='red'> removed a vital organ ([src]) from [target.name] ([target.ckey]) (INTENT: [uppertext(user.a_intent)])</font>"
-		target.attack_log += "\[[time_stamp()]\]<font color='orange'> had a vital organ ([src]) removed by [user.name] ([user.ckey]) (INTENT: [uppertext(user.a_intent)])</font>"
-		msg_admin_attack("[user.name] ([user.ckey]) removed a vital organ ([src]) from [target.name] ([target.ckey]) (INTENT: [uppertext(user.a_intent)]) (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[user.x];Y=[user.y];Z=[user.z]'>JMP</a>)")
-		target.death()
+	if(owner && user && vital)
+		user.attack_log += "\[[time_stamp()]\]<font color='red'> removed a vital organ ([src]) from [owner.name] ([owner.ckey]) (INTENT: [uppertext(user.a_intent)])</font>"
+		owner.attack_log += "\[[time_stamp()]\]<font color='orange'> had a vital organ ([src]) removed by [user.name] ([user.ckey]) (INTENT: [uppertext(user.a_intent)])</font>"
+		msg_admin_attack("[user.name] ([user.ckey]) removed a vital organ ([src]) from [owner.name] ([owner.ckey]) (INTENT: [uppertext(user.a_intent)]) (<A HREF='?_src_=holder;adminplayerobservecoodjump=1;X=[user.x];Y=[user.y];Z=[user.z]'>JMP</a>)")
+		owner.death()
 
 /obj/item/organ/proc/replaced(var/mob/living/carbon/human/target,var/obj/item/organ/external/affected)
 
@@ -314,10 +314,3 @@ var/list/organ_cache = list()
 	if(!robotic && user.a_intent == "help" && user.zone_sel.selecting == "mouth")
 		bitten(user)
 		return
-
-/obj/item/organ/proc/remove(var/mob/user)
-	if(user)
-		src.loc = get_turf(user)
-	else
-		src.loc = get_turf(owner)
-	return src

code/modules/organs/organ_alien.dm

@@ -107,14 +107,14 @@
 	organ_tag = "brain"
 	desc = "A disgusting space slug."
 
-/obj/item/organ/borer/removed(var/mob/living/target,var/mob/living/user)
+/obj/item/organ/borer/removed(var/mob/living/user)
 
 	..()
 
-	var/mob/living/simple_animal/borer/B = target.has_brain_worms()
+	var/mob/living/simple_animal/borer/B = owner.has_brain_worms()
 	if(B)
 		B.leave_host()
-		B.ckey = target.ckey
+		B.ckey = owner.ckey
 
 	spawn(0)
 		del(src)

code/modules/organs/organ_external.dm

@@ -28,7 +28,7 @@
 	var/list/obj/item/organ/external/children
 
 	// Internal organs of this body part
-	var/list/obj/item/organ/internal_organs
+	var/list/internal_organs = list()
 
 	var/damage_msg = "\red You feel an intense pain"
 	var/broken_description
@@ -620,7 +620,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 
 	if(parent)
 		parent.children -= src
-	src.removed(owner)
+	src.removed()
 
 	if(parent)
 		spawn(1)
@@ -808,7 +808,7 @@ Note that amputating the affected organ does in fact remove the infection from t
 		H.drop_item()
 	W.loc = owner
 
-/obj/item/organ/external/removed(var/mob/living/user)
+/obj/item/organ/external/removed()
 
 	var/is_robotic = status & ORGAN_ROBOT
 	..()
@@ -823,12 +823,12 @@ Note that amputating the affected organ does in fact remove the infection from t
 
 	// Attached organs also fly off.
 	for(var/obj/item/organ/external/O in children)
-		O.removed(owner)
+		O.removed()
 		O.loc = src //TODO: generate entire limb icons from contents.
 
 	// Grab all the internal giblets too.
 	for(var/obj/item/organ/organ in internal_organs)
-		organ.removed(user)
+		organ.removed()
 		organ.loc = src
 
 	release_restraints()

code/modules/projectiles/guns/launcher/crossbow.dm

@@ -105,14 +105,14 @@
 	current_user = user
 	user.visible_message("[user] begins to draw back the string of [src].","<span class='notice'>You begin to draw back the string of [src].</span>")
 	tension = 1
-	
+
 	while(bolt && tension && current_user == user)
 		if(!do_after(user, 25)) //crossbow strings don't just magically pull back on their own.
 			user.visible_message("[usr] stops drawing and relaxes the string of [src].","<span class='warning'>You stop drawing back and relax the string of [src].</span>")
 			tension = 0
 			icon_state = "crossbow"
 			return
-		
+
 		tension++
 		icon_state = "crossbow-drawn"
 
@@ -120,7 +120,7 @@
 			tension = max_tension
 			usr << "[src] clunks as you draw the string to its maximum tension!"
 			return
-		
+
 		user.visible_message("[usr] draws back the string of [src]!","<span class='notice'>You continue drawing back the string of [src]!</span>")
 
 /obj/item/weapon/gun/launcher/crossbow/proc/increase_tension(var/mob/user as mob)

code/modules/surgery/organs_internal.dm

@@ -304,12 +304,9 @@
 
 		// Extract the organ!
 		if(target.op_stage.current_organ)
-			var/obj/item/organ/I = target.internal_organs_by_name[target.op_stage.current_organ]
-			var/obj/item/organ/O
-			if(I && istype(I))
-				O = I.remove(user)
-				if(O && istype(O))
-					O.removed(target,user)
+			var/obj/item/organ/O = target.internal_organs_by_name[target.op_stage.current_organ]
+			if(O && istype(O))
+				O.removed(user)
 			target.op_stage.current_organ = null
 
 	fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)