holiday and quirk support

code/datums/traits/_quirk.dm

@@ -1,20 +1,33 @@
 //every quirk in this folder should be coded around being applied on spawn
 //these are NOT "mob quirks" like GOTTAGOFAST, but exist as a medium to apply them and other different effects
 /datum/quirk
+	/// The name of the quirk
 	var/name = "Test Quirk"
+	/// The description of the quirk
 	var/desc = "This is a test quirk."
+	/// What the quirk is worth in preferences, zero = neutral / free
 	var/value = 0
 	var/human_only = TRUE
+	/// Text displayed when this quirk is assigned to a mob (and not transferred)
 	var/gain_text
+	/// Text displayed when this quirk is removed from a mob (and not transferred)
 	var/lose_text
-	var/medical_record_text //This text will appear on medical records for the trait. Not yet implemented
-	var/antag_removal_text // Text will be given to the quirk holder if they get an antag that has it blacklisted.
+	/// This text will appear on medical records for the trait.
+	var/medical_record_text
+	/// Text will be given to the quirk holder if they get an antag that has it blacklisted.
+	var/antag_removal_text
 	var/mood_quirk = FALSE //if true, this quirk affects mood and is unavailable if moodlets are disabled
-	var/mob_trait //if applicable, apply and remove this mob trait
+	/// if applicable, apply and remove this mob trait
+	var/mob_trait
 	/// should we immediately call on_spawn or add a timer to trigger
 	var/on_spawn_immediate = TRUE
+	/// Reference to the mob currently tied to this quirk datum. Quirks are not singletons.
 	var/mob/living/quirk_holder
 	var/processing_quirk = FALSE
+	/// A lazylist of items people can receive from mail who have this quirk enabled
+	/// The base weight for the each quirk's mail goodies list to be selected is 5
+	/// then the item selected is determined by pick(selected_quirk.mail_goodies)
+	var/list/mail_goodies
 
 /datum/quirk/New(mob/living/quirk_mob, spawn_effects)
 	if(!quirk_mob || (human_only && !ishuman(quirk_mob)) || quirk_mob.has_quirk(type))

code/datums/traits/negative.dm

@@ -9,6 +9,12 @@
 	antag_removal_text = "Your antagonistic nature has removed your blood deficiency."
 	medical_record_text = "Patient requires regular treatment for blood loss due to low production of blood."
 
+/datum/quirk/blooddeficiency/add()
+	RegisterSignal(quirk_holder, COMSIG_SPECIES_GAIN, PROC_REF(update_mail))
+
+	var/mob/living/carbon/human/human_holder = quirk_holder
+	update_mail(new_species = human_holder.dna.species)
+
 /datum/quirk/blooddeficiency/on_process()
 	var/mob/living/carbon/human/H = quirk_holder
 	if(NOBLOOD in H.dna.species.species_traits) //can't lose blood if your species doesn't have any
@@ -16,6 +22,24 @@
 	else
 		quirk_holder.blood_volume -= 0.2
 
+/datum/quirk/blooddeficiency/proc/update_mail(datum/source, datum/species/new_species, datum/species/old_species)
+	SIGNAL_HANDLER
+
+	mail_goodies.Cut()
+
+	if(isnull(new_species.exotic_blood)) // && isnull(new_species.exotic_bloodtype)) // We don't really support your blood yet :(
+		if(NOBLOOD in new_species.inherent_traits)
+			return
+
+		mail_goodies += /obj/item/reagent_containers/blood/OMinus
+		return
+
+	for(var/obj/item/reagent_containers/blood/blood_bag as anything in typesof(/obj/item/reagent_containers/blood))
+		var/right_blood_type = !isnull(new_species.exotic_bloodtype) && initial(blood_bag.blood_type) == new_species.exotic_bloodtype
+//		var/right_blood_reagent = !isnull(new_species.exotic_blood) && initial(blood_bag.unique_blood) == new_species.exotic_blood
+		if(right_blood_type) // || right_blood_reagent)
+			mail_goodies += blood_bag
+
 /datum/quirk/depression
 	name = "Depression"
 	desc = "You sometimes just hate life."