[MIRROR] Adds a food trash element (#574)

* Adds a food trash element (#53225)

adds a food trash element, for dumping trash when u eat food

unused now, needed for food refactor. spawns trash in your hands (or on the floor) when the food this is attached to is eaten.

* Adds a food trash element

Co-authored-by: Qustinnus <Floydje123@hotmail.com>

code/datums/elements/food/food_trash.dm

@@ -0,0 +1,37 @@
+// If an item has the food_trash element it will drop an item when it is consumed.
+/datum/element/food_trash
+	element_flags = ELEMENT_BESPOKE
+	id_arg_index = 2
+	/// The type of trash that is spawned by this element
+	var/trash
+
+/datum/element/food_trash/Attach(datum/target, atom/trash)
+	. = ..()
+	if(!isatom(target))
+		return ELEMENT_INCOMPATIBLE
+	src.trash = trash
+	RegisterSignal(target, COMSIG_FOOD_CONSUMED, .proc/generate_trash)
+
+/datum/element/food_trash/Detach(datum/target)
+	. = ..()
+	UnregisterSignal(target, COMSIG_FOOD_CONSUMED)
+
+/datum/element/food_trash/proc/generate_trash(datum/source, mob/living/eater, mob/living/feeder)
+	SIGNAL_HANDLER
+
+	///cringy signal_handler shouldnt be needed if you dont want to return but oh well
+	INVOKE_ASYNC(src, .proc/async_generate_trash, source)
+
+/datum/element/food_trash/proc/async_generate_trash(datum/source)
+	var/datum/component/edible/edible_component = source
+
+	var/obj/item/trash_item = new trash()
+
+	var/atom/edible_object = edible_component.parent
+
+	var/mob/living/mob_location = edible_object.loc //The foods location
+
+	if(istype(mob_location))
+		mob_location.put_in_hands(trash_item)
+	else
+		trash_item.forceMove(get_turf(edible_component.parent))