[MIRROR] Trash Eater Signals (#12006)

Co-authored-by: Will <7099514+Willburd@users.noreply.github.com>

code/game/objects/trash_eating.dm

@@ -1,6 +1,13 @@
 // checks for when items are consumed by trash/ore eater
 /obj/item/proc/on_trash_eaten(var/mob/living/user)
 	SHOULD_CALL_PARENT(TRUE)
+
+	var/signal_results = SEND_SIGNAL(src, COMSIG_ITEM_TRASH_EATEN, user) | SEND_SIGNAL(user, COMSIG_MOB_TRASH_EATING, src)
+	if(signal_results & COMSIG_ITEM_TRASH_EAT_DENY) // A component attached to the item or the mob said we cannot eat this
+		return FALSE
+	if(signal_results & COMSIG_ITEM_TRASH_EAT_FORCED) // Ignore everything including blacklist, prefs and adminbus. Component is handling the rules.
+		return TRUE
+
 	if(is_type_in_list(src, GLOB.item_vore_blacklist) && !user.adminbus_trash) //If someone has adminbus, they can eat whatever they want.
 		to_chat(user, span_warning("You are not allowed to eat this."))
 		return FALSE
@@ -11,10 +18,22 @@
 		to_chat(user, span_warning("You really should not be eating this."))
 		message_admins("[key_name(user)] has attempted to ingest an uplink item. ([user ? ADMIN_JMP(user) : "null"])")
 		return FALSE
+
 	return TRUE
 
-/obj/item/proc/after_trash_eaten(var/mob/living/user) // Override for post-swallow messages
-	to_chat(src, span_notice("You can taste the flavor of garbage. Delicious."))
+/// Override this for post-swallow messages. Returns true if components on mob or item allow trash eating messages
+/obj/proc/after_trash_eaten(var/mob/living/user)
+	SHOULD_CALL_PARENT(TRUE)
+	SEND_GLOBAL_SIGNAL(COMSIG_GLOB_ITEM_TRASH_EATEN, src, user)
+	var/signal_results = SEND_SIGNAL(src, COMSIG_ITEM_AFTER_TRASH_EAT, user) | SEND_SIGNAL(user, COMSIG_MOB_AFTER_TRASH_EATING, src)
+	if(signal_results & COMSIG_ITEM_AFTER_TRASH_EAT_HIDE_MESSAGE)
+		return FALSE // Deny messages
+	return TRUE
+
+/obj/item/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
+	to_chat(user, span_notice("You can taste the flavor of garbage. Delicious."))
 
 // PAI
 /obj/item/paicard/on_trash_eaten(var/mob/living/user)
@@ -27,6 +46,8 @@
 	return TRUE
 
 /obj/item/paicard/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the sweet flavor of digital friendship."))
 	if(pai && pai.client && isbelly(loc))
 		var/obj/belly/B = loc
@@ -42,6 +63,8 @@
 	return TRUE
 
 /obj/item/book/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the dry flavor of knowledge."))
 
 // PDA
@@ -68,6 +91,8 @@
 	return TRUE
 
 /obj/item/pda/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the sweet flavor of delicious technology."))
 
 // ID
@@ -91,6 +116,8 @@
 	return TRUE
 
 /obj/item/card/id/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the delicious flavour of a person's whole identity."))
 
 // Shoes
@@ -112,79 +139,123 @@
 	return TRUE
 
 /obj/item/capture_crystal/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	if(bound_mob && (bound_mob in contents))
 		if(isbelly(loc))
 			to_chat(user, span_notice("You can taste the the power of command."))
 
 // Most trash has no special check, so the rest of these are just after_trash_eaten()
 /obj/item/flashlight/flare/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of spicy cardboard."))
 
 /obj/item/flame/match/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of spicy cardboard."))
 
 /obj/item/storage/box/matches/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of spicy cardboard."))
 
 /obj/item/flashlight/glowstick/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You found out the glowy juice only tastes like regret."))
 
 /obj/item/trash/cigbutt/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of bitter ash. Classy."))
 
 /obj/item/clothing/mask/smokable/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	if(lit)
 		to_chat(user, span_notice("You can taste the flavor of burning ash. Spicy!"))
 	else
 		to_chat(user, span_notice("You can taste the flavor of aromatic rolling paper and funny looks."))
 
 /obj/item/paper/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the dry flavor of bureaucracy."))
 
 /obj/item/dice/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the bitter flavor of cheating."))
 
 /obj/item/roulette_ball/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the bitter flavor of cheating."))
 
 /obj/item/lipstick/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of couture and style. Toddler at the make-up bag style."))
 
 /obj/item/soap/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the bitter flavor of verbal purification."))
 
 /obj/item/spacecash/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of wealth and reckless waste."))
 
 /obj/item/storage/wallet/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of wealth and reckless waste."))
 
 /obj/item/broken_bottle/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of pain. This can't possibly be healthy for your guts."))
 
 /obj/item/material/shard/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the flavor of pain. This can't possibly be healthy for your guts."))
 
 /obj/item/light/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	if(status == LIGHT_BROKEN)
 		to_chat(user, span_notice("You can taste the flavor of pain. This can't possibly be healthy for your guts."))
 	else
 		to_chat(user, span_notice("You can taste the flavor of really bad ideas."))
 
 /obj/item/bikehorn/tinytether/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You feel a rush of power swallowing such a large, err, tiny structure."))
 
 /obj/item/mmi/digital/posibrain/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the sweet flavor of digital friendship. Or maybe it is something else."))
 
 /obj/item/aicard/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the sweet flavor of digital friendship. Or maybe it is something else."))
 
 /obj/item/reagent_containers/food/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	if(!reagents?.total_volume)
 		to_chat(user, span_notice("You can taste the flavor of garbage and leftovers. Delicious?"))
 	else
 		to_chat(user, span_notice("You can taste the flavor of gluttonous waste of food."))
 
 /obj/item/clothing/accessory/collar/after_trash_eaten(var/mob/living/user)
+	if(!..(user))
+		return
 	to_chat(user, span_notice("You can taste the submissiveness in the wearer of [src]!"))