[MIRROR] Refactors species mutanthands into human component [MDB IGNORE] (#19355)

* Refactors species mutanthands into human component

* wew

---------

Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>
Co-authored-by: Gandalf <9026500+Gandalf2k15@users.noreply.github.com>

code/modules/zombie/items.dm

@@ -1,36 +1,17 @@
-/obj/item/zombie_hand
+/obj/item/mutant_hand/zombie
 	name = "zombie claw"
 	desc = "A zombie's claw is its primary tool, capable of infecting \
 		humans, butchering all other living things to \
 		sustain the zombie, smashing open airlock doors and opening \
 		child-safe caps on bottles."
-	item_flags = ABSTRACT | DROPDEL | HAND_ITEM
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
-	icon = 'icons/effects/blood.dmi'
-	icon_state = "bloodhand_left"
-	var/icon_left = "bloodhand_left"
-	var/icon_right = "bloodhand_right"
+
 	hitsound = 'sound/hallucinations/growl1.ogg'
 	force = 21 // Just enough to break airlocks with melee attacks
-	sharpness = SHARP_EDGED
 	wound_bonus = -30
 	bare_wound_bonus = 15
-	damtype = BRUTE
+	sharpness = SHARP_EDGED
 
-/obj/item/zombie_hand/Initialize(mapload)
-	. = ..()
-	ADD_TRAIT(src, TRAIT_NODROP, HAND_REPLACEMENT_TRAIT)
-
-/obj/item/zombie_hand/visual_equipped(mob/user, slot)
-	. = ..()
-	//these are intentionally inverted
-	var/i = user.get_held_index_of_item(src)
-	if(!(i % 2))
-		icon_state = icon_left
-	else
-		icon_state = icon_right
-
-/obj/item/zombie_hand/afterattack(atom/target, mob/user, proximity_flag)
+/obj/item/mutant_hand/zombie/afterattack(atom/target, mob/user, proximity_flag)
 	. = ..()
 	if(!proximity_flag)
 		return
@@ -59,14 +40,14 @@
 		infection = new()
 		infection.Insert(target)
 
-/obj/item/zombie_hand/suicide_act(mob/living/user)
+/obj/item/mutant_hand/zombie/suicide_act(mob/living/user)
 	user.visible_message(span_suicide("[user] is ripping [user.p_their()] brains out! It looks like [user.p_theyre()] trying to commit suicide!"))
 	var/obj/item/bodypart/head = user.get_bodypart(BODY_ZONE_HEAD)
 	if(head)
 		head.dismember()
 	return BRUTELOSS
 
-/obj/item/zombie_hand/proc/check_feast(mob/living/target, mob/living/user)
+/obj/item/mutant_hand/zombie/proc/check_feast(mob/living/target, mob/living/user)
 	if(target.stat == DEAD)
 		var/hp_gained = target.maxHealth
 		target.investigate_log("has been devoured by a zombie.", INVESTIGATE_DEATHS)