salglu works like normal now again and adds more sanity

code/modules/mob/living/blood.dm

@@ -40,27 +40,28 @@
 
 	if(bodytemperature >= TCRYO && !(HAS_TRAIT(src, TRAIT_HUSK))) //cryosleep or husked people do not pump the blood.
 		if(integrating_blood > 0)
-			integrating_blood = max(integrating_blood - 1, 0)
-			//Blood regeneration if there is some space
-			if(blood_volume < BLOOD_VOLUME_NORMAL)
-				var/nutrition_ratio = 0
+			var/integrated_blood = max(integrating_blood - 1, 0)
+			integrating_blood = integrated_blood
+			if(blood_volume < BLOOD_VOLUME_MAXIMUM)
 				blood_volume ++
-				if(!HAS_TRAIT(src, TRAIT_NOHUNGER))
-					switch(nutrition)
-						if(0 to NUTRITION_LEVEL_STARVING)
-							nutrition_ratio = 0.2
-						if(NUTRITION_LEVEL_STARVING to NUTRITION_LEVEL_HUNGRY)
-							nutrition_ratio = 0.4
-						if(NUTRITION_LEVEL_HUNGRY to NUTRITION_LEVEL_FED)
-							nutrition_ratio = 0.6
-						if(NUTRITION_LEVEL_FED to NUTRITION_LEVEL_WELL_FED)
-							nutrition_ratio = 0.8
-						else
-							nutrition_ratio = 1
-					if(satiety > 80)
-						nutrition_ratio *= 1.25
-					adjust_nutrition(-nutrition_ratio * HUNGER_FACTOR)
-					blood_volume = min(BLOOD_VOLUME_NORMAL, blood_volume + 0.5 * nutrition_ratio)
+		if(blood_volume < BLOOD_VOLUME_NORMAL)
+			var/nutrition_ratio = 0
+			if(!HAS_TRAIT(src, TRAIT_NOHUNGER))
+				switch(nutrition)
+					if(0 to NUTRITION_LEVEL_STARVING)
+						nutrition_ratio = 0.2
+					if(NUTRITION_LEVEL_STARVING to NUTRITION_LEVEL_HUNGRY)
+						nutrition_ratio = 0.4
+					if(NUTRITION_LEVEL_HUNGRY to NUTRITION_LEVEL_FED)
+						nutrition_ratio = 0.6
+					if(NUTRITION_LEVEL_FED to NUTRITION_LEVEL_WELL_FED)
+						nutrition_ratio = 0.8
+					else
+						nutrition_ratio = 1
+				if(satiety > 80)
+					nutrition_ratio *= 1.25
+				adjust_nutrition(-nutrition_ratio * HUNGER_FACTOR)
+				blood_volume = min(BLOOD_VOLUME_NORMAL, blood_volume + 0.5 * nutrition_ratio)
 
 		//Effects of bloodloss
 		var/word = pick("dizzy","woozy","faint")
@@ -390,8 +391,7 @@
 		H.handle_blood()
 
 /mob/living/proc/AddIntegrationBlood(value, force)
-	var/species_maxblood = BLOOD_VOLUME_NORMAL
-	if(isslimeperson(src) || isvampire(src))
-		species_maxblood = BLOOD_VOLUME_MAXIMUM
-	if(blood_volume + integrating_blood < species_maxblood || force)
+	if(value < 0 && integrating_blood < value) //Remove the normal blood of the carbon if we can't afford it with integrating_blood
+		blood_volume = min(blood_volume, value)
+	if(integrating_blood < blood_volume + BLOOD_VOLUME_NORMAL || force)
 		integrating_blood += value

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

@@ -1273,3 +1273,6 @@
 	var/mob/living/carbon/C = usr
 	if(I.can_give())
 		C.give(src)
+
+/mob/living/carbon/proc/functional_blood()
+	return blood_volume + integrating_blood

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

@@ -182,3 +182,8 @@
 	destination.underwear = underwear
 	destination.undershirt = undershirt
 	destination.socks = socks
+
+/mob/living/carbon/human/AddIntegrationBlood(value, force)
+	if(NOBLOOD in dna.species.species_traits) //Can't lose blood if your species doesn't have any
+		return
+	. = ..()