More fixes to make it work

code/modules/antagonists/bloodsucker/bloodsucker_life.dm

@@ -89,6 +89,7 @@
 	owner.current.adjustStaminaLoss(-1.5 + (actual_regen * -7) * mult, 0) // Humans lose stamina damage really quickly. Vamps should heal more.
 	owner.current.adjustCloneLoss(-0.1 * (actual_regen * 2) * mult, 0)
 	owner.current.adjustOrganLoss(ORGAN_SLOT_BRAIN, -1 * (actual_regen * 4) * mult)
+	owner.current.integrating_blood = 0
 	// No Bleeding
 	/*if(ishuman(owner.current)) //NOTE Current bleeding is horrible, not to count the amount of blood ballistics delete.
 		var/mob/living/carbon/human/H = owner.current

code/modules/mob/living/blood.dm

@@ -39,12 +39,13 @@
 		return
 
 	if(bodytemperature >= TCRYO && !(HAS_TRAIT(src, TRAIT_HUSK))) //cryosleep or husked people do not pump the blood.
+		integrating_blood --
 		//Blood regeneration if there is some space
 		if(blood_volume < BLOOD_VOLUME_NORMAL)
 			var/nutrition_ratio = 0
 			if(integrating_blood) //Do we have blood to normalize in our system?
-				integrating_blood --
 				blood_volume ++
+					//vomit(blood = TRUE) //Too much, just too much
 			if(!HAS_TRAIT(src, TRAIT_NOHUNGER))
 				switch(nutrition)
 					if(0 to NUTRITION_LEVEL_STARVING)
@@ -64,9 +65,14 @@
 		else
 			if(integrating_blood)
 				integrating_blood --
+				if(integrating_blood > BLOOD_VOLUME_NORMAL) //Let's not allow too much
+					integrating_blood = BLOOD_VOLUME_NORMAL
+				if(integrating_blood > blood_volume)
+					integrating_blood = BLOOD_VOLUME_NORMAL - 
 		//Effects of bloodloss
 		var/word = pick("dizzy","woozy","faint")
-		switch(blood_volume)
+		var/blood_effect_volume = blood_volume + integrating_blood
+		switch(blood_effect_volume)
 			if(BLOOD_VOLUME_MAXIMUM to BLOOD_VOLUME_EXCESS)
 				if(prob(10))
 					to_chat(src, "<span class='warning'>You feel terribly bloated.</span>")

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

@@ -1365,7 +1365,7 @@ GLOBAL_LIST_EMPTY(roundstart_race_names)
 
 /datum/species/proc/handle_chemicals(datum/reagent/chem, mob/living/carbon/human/H)
 	if(chem.type == exotic_blood && !istype(exotic_blood, /datum/reagent/blood))
-		H.integrating_blood += round(chem.volume, 0.1))
+		H.integrating_blood += round(chem.volume, 0.1)
 		H.reagents.del_reagent(chem.type)
 		return TRUE
 	return FALSE

code/modules/reagents/chemistry/reagents/medicine_reagents.dm

@@ -405,13 +405,10 @@
 	if((HAS_TRAIT(M, TRAIT_NOMARROW)))
 		return
 	if(last_added)
-		M.blood_volume -= last_added
+		M.integrating_blood -= min(M.integrating_blood, last_added)
 		last_added = 0
 	if(M.blood_volume < maximum_reachable)	//Can only up to double your effective blood level.
-		var/amount_to_add = min(M.blood_volume, volume*5)
+		last_added = volume * 5
-		var/new_blood_level = min(M.blood_volume + amount_to_add, maximum_reachable)
-		last_added = new_blood_level - M.blood_volume
-		M.integrating_blood += extra_regen
 	if(prob(33))
 		M.adjustBruteLoss(-0.5*REM, 0)
 		M.adjustFireLoss(-0.5*REM, 0)