Drinks can now carry diseases, Wipe down your glasses with rags bartenders! (#52421)

* Drinks can now infect you, Wipe down your glasses with rags bartenders!

* Apply suggestions from code review

Co-authored-by: Rohesie <rohesie@gmail.com>

* Update code/datums/components/infective.dm

Co-authored-by: Rohesie <rohesie@gmail.com>

* Update code/datums/components/infective.dm

Co-authored-by: Rohesie <rohesie@gmail.com>

Co-authored-by: Rohesie <rohesie@gmail.com>

code/__DEFINES/dcs/signals.dm

@@ -627,6 +627,12 @@
 ///from base of obj/item/reagent_containers/food/snacks/attack(): (mob/living/eater, mob/feeder)
 #define COMSIG_FOOD_EATEN "food_eaten"
 
+//Drink
+
+///from base of obj/item/reagent_containers/food/drinks/attack(): (mob/living/M, mob/user)
+#define COMSIG_DRINK_DRANK "drink_drank"
+///from base of obj/item/reagent_containers/glass/attack(): (mob/M, mob/user)
+#define COMSIG_GLASS_DRANK "glass_drank"
 //Gibs
 
 ///from base of /obj/effect/decal/cleanable/blood/gibs/streak(): (list/directions, list/diseases)

code/datums/components/infective.dm

@@ -1,5 +1,4 @@
 /datum/component/infective
-	dupe_mode = COMPONENT_DUPE_ALLOWED
 	var/list/datum/disease/diseases //make sure these are the static, non-processing versions!
 	var/expire_time
 	var/required_clean_types = CLEAN_TYPE_DISEASE
@@ -26,6 +25,10 @@
 		RegisterSignal(parent, COMSIG_ITEM_EQUIPPED, .proc/try_infect_equipped)
 		if(istype(parent, /obj/item/reagent_containers/food/snacks))
 			RegisterSignal(parent, COMSIG_FOOD_EATEN, .proc/try_infect_eat)
+		else if(istype(parent, /obj/item/reagent_containers/food/drinks))
+			RegisterSignal(parent, COMSIG_DRINK_DRANK, .proc/try_infect_drink)
+		else if(istype(parent, /obj/item/reagent_containers/glass))
+			RegisterSignal(parent, COMSIG_GLASS_DRANK, .proc/try_infect_drink)
 	else if(istype(parent, /obj/effect/decal/cleanable/blood/gibs))
 		RegisterSignal(parent, COMSIG_GIBS_STREAK, .proc/try_infect_streak)
 
@@ -34,6 +37,13 @@
 		eater.ForceContractDisease(V)
 	try_infect(feeder, BODY_ZONE_L_ARM)
 
+/datum/component/infective/proc/try_infect_drink(datum/source, mob/living/drinker, mob/living/feeder)
+	for(var/disease in diseases)
+		drinker.ForceContractDisease(disease)
+	var/appendage_zone = feeder.held_items.Find(source)
+	appendage_zone = appendage_zone == 0 ? BODY_ZONE_CHEST : appendage_zone % 2 ? BODY_ZONE_R_ARM : BODY_ZONE_L_ARM
+	try_infect(feeder, appendage_zone)
+
 /datum/component/infective/proc/clean(datum/source, clean_types)
 	if(clean_types & required_clean_types)
 		qdel(src)

code/modules/food_and_drinks/drinks/drinks.dm

@@ -44,12 +44,23 @@
 		M.visible_message("<span class='danger'>[user] fed [M] the contents of [src].</span>", \
 			"<span class='userdanger'>[user] fed you the contents of [src].</span>")
 		log_combat(user, M, "fed", reagents.log_list())
-
+	SEND_SIGNAL(src, COMSIG_DRINK_DRANK, M, user)
 	var/fraction = min(gulp_size/reagents.total_volume, 1)
 	checkLiked(fraction, M)
 	reagents.expose(M, INGEST, fraction)
 	reagents.trans_to(M, gulp_size, transfered_by = user)
 	playsound(M.loc,'sound/items/drink.ogg', rand(10,50), TRUE)
+	if(iscarbon(M))
+		var/mob/living/carbon/carbon_drinker = M
+		var/list/diseases = carbon_drinker.get_static_viruses()
+		if(LAZYLEN(diseases))
+			var/list/datum/disease/diseases_to_add = list()
+			for(var/d in diseases)
+				var/datum/disease/malady = d
+				if(malady.spread_flags & DISEASE_SPREAD_CONTACT_FLUIDS)
+					diseases_to_add += malady
+			if(LAZYLEN(diseases_to_add))
+				AddComponent(/datum/component/infective, diseases_to_add)
 	return TRUE
 
 /*

code/modules/reagents/reagent_containers/glass.dm

@@ -48,8 +48,20 @@
 				log_combat(user, M, "fed", reagents.log_list())
 			else
 				to_chat(user, "<span class='notice'>You swallow a gulp of [src].</span>")
+			SEND_SIGNAL(src, COMSIG_GLASS_DRANK, M, user)
 			addtimer(CALLBACK(reagents, /datum/reagents.proc/trans_to, M, 5, TRUE, TRUE, FALSE, user, FALSE, INGEST), 5)
 			playsound(M.loc,'sound/items/drink.ogg', rand(10,50), TRUE)
+			if(iscarbon(M))
+				var/mob/living/carbon/carbon_drinker = M
+				var/list/diseases = carbon_drinker.get_static_viruses()
+				if(LAZYLEN(diseases))
+					var/list/datum/disease/diseases_to_add = list()
+					for(var/d in diseases)
+						var/datum/disease/malady = d
+						if(malady.spread_flags & DISEASE_SPREAD_CONTACT_FLUIDS)
+							diseases_to_add += malady
+					if(LAZYLEN(diseases_to_add))
+						AddComponent(/datum/component/infective, diseases_to_add)
 
 /obj/item/reagent_containers/glass/afterattack(obj/target, mob/user, proximity)
 	. = ..()