add: Diona passive blood regen (ss220-space#4945)

* no more blood regen

* some fixes

* Update diona.dm

* some more..

* missing tabulation

code/datums/components/aura_healing.dm

@@ -174,7 +174,7 @@
 			var/mob/living/simple_animal/animal_candidate = candidate
 			animal_candidate.adjustHealth(-simple_heal * seconds_per_tick, updating_health = FALSE)
 
-		if(candidate.blood_volume < BLOOD_VOLUME_NORMAL)
+		if(candidate.blood_volume < BLOOD_VOLUME_NORMAL && !isdiona(candidate))
 			candidate.blood_volume += blood_heal * seconds_per_tick
 
 		var/external_organ_heal_done = FALSE

code/datums/diseases/viruses/advance/symptoms/blood.dm

@@ -35,7 +35,7 @@ Bonus
 				if(prob(10))
 					to_chat(M, span_notice("You can hear own heartbeat"))
 				check = TRUE
-	if(check == TRUE && (M.blood_volume < BLOOD_VOLUME_NORMAL) && !(NO_BLOOD in M.dna.species.species_traits))
+	if(check == TRUE && (M.blood_volume < BLOOD_VOLUME_NORMAL) && !(NO_BLOOD in M.dna.species.species_traits) && !isdiona(M))
 		M.blood_volume += 0.4
 		M.adjust_nutrition(-2)
 	return

code/game/gamemodes/clockwork/clockwork_structures.dm

@@ -204,7 +204,7 @@
 				if(M.health < M.maxHealth)
 					M.adjustHealth(-8)
 
-			if(ishuman(L) && L.blood_volume < BLOOD_VOLUME_NORMAL)
+			if(ishuman(L) && L.blood_volume < BLOOD_VOLUME_NORMAL && !isdiona(L))
 				L.blood_volume += 1
 
 /obj/structure/clockwork/functional/beacon/Destroy()

code/game/gamemodes/cult/blood_magic.dm

@@ -716,7 +716,7 @@
 					return
 
 				//Blood restoration
-				if(H.dna && !(NO_BLOOD in H.dna.species.species_traits) && H.dna.species.exotic_blood == null)
+				if(H.dna && !(NO_BLOOD in H.dna.species.species_traits) && H.dna.species.exotic_blood == null  && !isdiona(H))
 					if(H.blood_volume < BLOOD_VOLUME_SAFE)
 						var/restore_blood = BLOOD_VOLUME_SAFE - H.blood_volume
 						if(uses * 2 < restore_blood)

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

@@ -89,9 +89,22 @@
 	H.clear_alert("nolight")
 
 /datum/species/diona/handle_reagents(mob/living/carbon/human/H, datum/reagent/R)
-	if(R.id == "glyphosate" || R.id == "atrazine")
-		H.adjustToxLoss(3) //Deal aditional damage
-		return TRUE
+
+	switch(R.id)
+
+		if("glyphosate", "atrazine")
+			H.adjustToxLoss(3) //Deal additional damage
+			return TRUE
+		if("iron")
+			H.reagents.remove_reagent(R.id, R.metabolization_rate * H.metabolism_efficiency * H.digestion_ratio)
+			return FALSE
+		if("salglu_solution")
+			if(prob(33))
+				H.adjustBruteLoss(-1)
+				H.adjustFireLoss(-1)
+			H.reagents.remove_reagent(R.id, R.metabolization_rate * H.metabolism_efficiency * H.digestion_ratio)
+			return FALSE
+
 	return ..()
 
 /datum/species/diona/handle_life(mob/living/carbon/human/H)
@@ -118,6 +131,10 @@
 			update |= H.heal_damages(tox = 1, oxy = 1, updating_health = FALSE)
 			if(update)
 				H.updatehealth()
+			if(H.blood_volume < BLOOD_VOLUME_NORMAL)
+				H.blood_volume += 0.4
+		else if(light_amount < 0.2)
+			H.blood_volume -= 0.1
 
 	if(!is_vamp && H.nutrition < NUTRITION_LEVEL_STARVING + 50)
 		H.adjustBruteLoss(2)

code/modules/reagents/chemistry/reagents/medicine.dm

@@ -1431,7 +1431,7 @@
 					var/mob/living/carbon/human/H = M
 					for(var/obj/item/organ/internal/I as anything in M.internal_organs) // 56 healing to all internal organs.
 						I.heal_internal_damage(8)
-					if(H.blood_volume < BLOOD_VOLUME_NORMAL * 0.9)// If below 90% blood, regenerate 210 units total
+					if(H.blood_volume < BLOOD_VOLUME_NORMAL * 0.9 && !isdiona(H))// If below 90% blood, regenerate 210 units total
 						H.blood_volume += 30
 					for(var/datum/disease/critical/heart_failure/HF in H.diseases)
 						HF.cure() //Won't fix a stopped heart, but it will sure fix a critical one. Shock is not fixed as healing will fix it