Buildable vendors.

code/game/machinery/machine_frame.dm

@@ -318,7 +318,8 @@ to destroy them and players will be able to make replacements.
 		"HydroDrobe" =							/obj/machinery/economy/vending/hydrodrobe,
 		"JaniDrobe" =							/obj/machinery/economy/vending/janidrobe,
 		"LawDrobe" =							/obj/machinery/economy/vending/lawdrobe,
-		"TrainDrobe" =							/obj/machinery/economy/vending/traindrobe)
+		"TrainDrobe" =							/obj/machinery/economy/vending/traindrobe,
+		"CrewVend 3000" =						/obj/machinery/economy/vending/custom)
 	var/static/list/unique_vendors = list(
 		"ShadyCigs Ultra" =						/obj/machinery/economy/vending/cigarette/beach,
 		"SyndiMed Plus" =						/obj/machinery/economy/vending/wallmed/syndicate)
@@ -338,7 +339,10 @@ to destroy them and players will be able to make replacements.
 	build_path = typepath
 	board_name = "[type] Vendor"
 	format_board_name()
-	req_components = list(initial(typepath.refill_canister) = 1)
+	if(initial(typepath.refill_canister))
+		req_components = list(initial(typepath.refill_canister) = 1)
+	else
+		req_components = list()
 
 /obj/item/circuitboard/slot_machine
 	board_name = "Slot Machine"

code/game/machinery/merch_vendor.dm

@@ -34,10 +34,10 @@
 			var/pp = replacetext(replacetext("[merch.typepath]", "/obj/item/", ""), "/", "-")
 			imagelist[pp] = "[icon2base64(icon(initial(I.icon), initial(I.icon_state), SOUTH, 1))]"
 
-/obj/machinery/economy/merch/attackby__legacy__attackchain(obj/item/I, mob/user)
+/obj/machinery/economy/merch/item_interaction(mob/living/user, obj/item/I, list/modifiers)
 	if(isspacecash(I))
 		insert_cash(I, user)
-		return TRUE
+		return ITEM_INTERACT_COMPLETE
 
 	return ..()
 

code/game/machinery/vendors/custom_vendors.dm

@@ -0,0 +1,73 @@
+/obj/machinery/economy/vending/custom
+	name = "\improper CrewVend 3000"
+	refill_canister = null
+	always_deconstruct = TRUE
+	var/obj/item/eftpos/linked_pos
+
+/obj/machinery/economy/vending/custom/Destroy()
+	if(!isnull(linked_pos))
+		linked_pos.linked_vendors -= src
+		linked_pos = null
+	return ..()
+
+/obj/machinery/economy/vending/custom/locked()
+	return isnull(linked_pos) || linked_pos.transaction_locked
+
+/obj/machinery/economy/vending/custom/get_vendor_account()
+	return linked_pos?.linked_account || ..()
+
+/obj/machinery/economy/vending/custom/item_interaction(mob/living/user, obj/item/used, list/modifiers)
+	if(istype(used, /obj/item/eftpos))
+		visible_message("[src] beeps as [user] links it to [used].", "You hear something beep.")
+		if(!isnull(linked_pos))
+			linked_pos.linked_vendors -= src
+		linked_pos = used
+		var/obj/item/eftpos/pos = used
+		pos.linked_vendors += src
+		return ITEM_INTERACT_COMPLETE
+	else if(isnull(linked_pos))
+		to_chat(user, "<span style='warning'>You need to link a point of sale device first!</span>")
+		return ITEM_INTERACT_COMPLETE
+	else if(locked())
+		return ..()
+	else if(used.tool_behaviour == TOOL_CROWBAR)
+		return ..()
+	if(!user.canUnEquip(used, FALSE))
+		to_chat(user, "<span style='warning'>\The [used] is stuck to your hand!</span>")
+		return ITEM_INTERACT_COMPLETE
+
+	for(var/datum/data/vending_product/physical/record in physical_product_records)
+		if(record.get_amount_left() == 0)
+			physical_product_records -= record
+			qdel(record)
+		else if(isitem(record.items[1]))
+			var/obj/item/existing = record.items[1]
+			if(existing.should_stack_with(used))
+				record.items += used
+				user.unequip_to(used, null, TRUE, TRUE)
+				user.visible_message("[user] puts [used] into [src].", "You put [used] into [src].")
+				return ITEM_INTERACT_COMPLETE
+
+	var/price = tgui_input_number(user, "How much do you want to sell [used] for?")
+	if(isnum(price))
+		var/datum/data/vending_product/physical/record = new(used.name, used.icon, used.icon_state)
+		record.items += used
+		record.price = price
+		physical_product_records += record
+		SStgui.update_uis(src, TRUE)
+		user.unequip_to(used, null, TRUE, TRUE)
+		user.visible_message("[user] puts [used] into [src].", "You put [used] into [src].")
+	return ITEM_INTERACT_COMPLETE
+
+/obj/machinery/economy/vending/custom/crowbar_act(mob/user, obj/item/I)
+	if(!isnull(linked_pos) && linked_pos.transaction_locked)
+		user.visible_message("[user] tries to pry [src] apart, but fails.", "The lock on [src] resists your efforts to pry it apart.")
+		return TRUE
+	return ..()
+
+/obj/machinery/economy/vending/custom/delayed_vend(datum/data/vending_product/R, mob/user)
+	. = ..()
+	if(istype(R, /datum/data/vending_product/physical) && R.get_amount_left() == 0)
+		physical_product_records -= R
+		physical_hidden_records -= R
+		SStgui.update_uis(src, TRUE)

code/game/machinery/vendors/generic_vendors.dm

@@ -156,29 +156,17 @@
 	return TRUE
 
 /obj/machinery/economy/vending/coffee/do_vend(datum/data/vending_product/R, mob/user)
-	if(..())
+	var/obj/item/reagent_containers/drinks/vended = ..()
+	if(!istype(vended))
 		return
-	var/obj/item/reagent_containers/drinks/vended = new R.product_path()
 
 	if(istype(vended, /obj/item/reagent_containers/drinks/mug))
-		var/put_on_turf = TRUE
-		if(user && iscarbon(user) && user.Adjacent(src))
-			if(user.put_in_hands(vended))
-				put_on_turf = FALSE
-		if(put_on_turf)
-			var/turf/T = get_turf(src)
-			vended.forceMove(T)
 		return
 
 	vended.reagents.trans_to(inserted_item, vended.reagents.total_volume)
 	if(vended.reagents.total_volume)
-		var/put_on_turf = TRUE
 		if(user && iscarbon(user) && user.Adjacent(src))
-			if(user.put_in_hands(vended))
-				put_on_turf = FALSE
-		if(put_on_turf)
-			var/turf/T = get_turf(src)
-			vended.forceMove(T)
+			user.put_in_hands(vended)
 	else
 		qdel(vended)