swap bodypart species checking to bitmap, fix surgery for monkey body… (#60280)

* swap bodypart species checking to bitmap, fix surgery for monkey bodyparts on monkeys

* fix part_origin so it is used correctly

* remove tabs, change DEFAULT_BODY to NULL_BODY

* add requested documentation

Co-authored-by: whitecas18 <whitecas18@students.ecu.edu>

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

@@ -141,6 +141,11 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 	/// The body temperature limit the body can take before it starts taking damage from cold.
 	var/bodytemp_cold_damage_limit = BODYTEMP_COLD_DAMAGE_LIMIT
 
+	///the species that body parts are surgically compatible with (found in _DEFINES/mobs.dm)
+	///current acceptable bitfields are HUMAN_BODY, ALIEN_BODY, LARVA_BODY, MONKEY_BODY, or NONE
+	var/allowed_animal_origin = HUMAN_BODY
+
+
 	///Species-only traits. Can be found in [code/__DEFINES/DNA.dm]
 	var/list/species_traits = list()
 	///Generic traits tied to having the species.
@@ -207,6 +212,8 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 	///List of visual overlays created by handle_body()
 	var/list/body_vis_overlays = list()
 
+
+
 ///////////
 // PROCS //
 ///////////

code/modules/mob/living/carbon/human/species_types/monkeys.dm

@@ -10,6 +10,7 @@
 	mutant_bodyparts = list("tail_monkey" = "Monkey")
 	skinned_type = /obj/item/stack/sheet/animalhide/monkey
 	meat = /obj/item/food/meat/slab/monkey
+	allowed_animal_origin = MONKEY_BODY
 	knife_butcher_results = list(/obj/item/food/meat/slab/monkey = 5, /obj/item/stack/sheet/animalhide/monkey = 1)
 	species_traits = list(HAS_FLESH,HAS_BONE,NO_UNDERWEAR,LIPS,NOEYESPRITES,NOBLOODOVERLAY,NOTRANSSTING, NOAUGMENTS)
 	inherent_traits = list(
@@ -43,6 +44,7 @@
 	payday_modifier = 1.5
 
 
+
 /datum/species/monkey/random_name(gender,unique,lastname)
 	var/randname = "monkey ([rand(1,999)])"