changes suggested by kevin

code/__DEFINES/traits.dm

@@ -363,6 +363,3 @@
 #define MAPPING_HELPER_TRAIT "mapping-helper"
 /// Trait associated with mafia
 #define MAFIA_TRAIT "mafia"
-
-/// snowflake blood process (slimes)
-#define TRAIT_SNOWFLAKE_BLOOD_PROCESS "snowflake_blood_process"

code/modules/mob/living/blood.dm

@@ -39,7 +39,7 @@
 		return
 
 	if(bodytemperature >= TCRYO && !(HAS_TRAIT(src, TRAIT_HUSK))) //cryosleep or husked people do not pump the blood.
-		if(!HAS_TRAIT(src, TRAIT_SNOWFLAKE_BLOOD_PROCESS))
+		if(species.handle_blood()) // if this returns TRUE, then the species is not handling blood itself and we can control everything
 			if(integrating_blood > 0)
 				var/blood_integrated = max(integrating_blood - 1, 0)
 				var/blood_diff = integrating_blood - blood_integrated

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

@@ -2452,6 +2452,13 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 		return TRUE
 	return FALSE
 
+////////////////
+//Blood Stuff///
+////////////////
+// true = handle blood normally, false = do not (and then handle blood in this proc instead please!!)
+/datum/species/proc/handle_blood()
+	return TRUE
+
 ////////////////
 //Tail Wagging//
 ////////////////

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

@@ -55,9 +55,9 @@
 	//update blood color to body color
 	exotic_blood_color = "#" + H.dna.features["mcolor"]
 
-/datum/species/jelly/spec_life(mob/living/carbon/human/H, delta_time, times_fired)
+/datum/species/jelly/handle_blood(mob/living/carbon/human/H, delta_time, times_fired)
 	if(H.stat == DEAD) //can't farm slime jelly from a dead slime/jelly person indefinitely
-		return
+		return TRUE // we dont handle blood when dead
 
 	if(H.blood_volume <= 0)
 		H.blood_volume += 2.5 * delta_time
@@ -80,6 +80,8 @@
 	if(regrowth)
 		regrowth.UpdateButtonIcon()
 
+	return FALSE // to let living/handle_blood know that the species is handling blood instead
+
 /datum/species/jelly/proc/Cannibalize_Body(mob/living/carbon/human/H)
 	var/list/limbs_to_consume = list(BODY_ZONE_R_ARM, BODY_ZONE_L_ARM, BODY_ZONE_R_LEG, BODY_ZONE_L_LEG) - H.get_missing_limbs()
 	var/obj/item/bodypart/consumed_limb