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Bubberstation/code/datums/elements/chewable.dm
Mothblocks 92b32c3f00 Refactor /obj/item/food/chewable into a chewable element (#58243)
* Refactor /obj/item/food/chewable into a chewable component

* Element, always process
2021-04-12 16:18:00 +02:00

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/// Anything with this element will provide the reagents inside the
/// item to the user when it is equipped.
/datum/element/chewable
element_flags = ELEMENT_DETACH | ELEMENT_BESPOKE
id_arg_index = 2
/// The amount to metabolize per second
var/metabolization_amount = REAGENTS_METABOLISM
/// A bitfield of valid slots. If this is not provided, then it will
/// use the `slot_flags` of the item.
var/slots_to_check
/// The objects with this element that are currently being processed
var/list/processing = list()
/datum/element/chewable/Attach(datum/target, metabolization_amount, slots_to_check)
. = ..()
if (!isitem(target))
return ELEMENT_INCOMPATIBLE
var/obj/item/target_item = target
if (metabolization_amount)
src.metabolization_amount = metabolization_amount
src.slots_to_check = slots_to_check || target_item.slot_flags
RegisterSignal(target, COMSIG_ITEM_DROPPED, .proc/on_dropped)
RegisterSignal(target, COMSIG_ITEM_EQUIPPED, .proc/on_equipped)
/datum/element/chewable/Detach(datum/source, force)
processing -= source
UnregisterSignal(source, list(COMSIG_ITEM_DROPPED, COMSIG_ITEM_EQUIPPED))
/datum/element/chewable/process(delta_time)
if (processing.len == 0)
return PROCESS_KILL
for (var/obj/item/item as anything in processing)
var/mob/chewer = item.loc
if (!istype(chewer) || !item.reagents?.total_volume)
processing -= item
continue
handle_reagents(item, delta_time)
/datum/element/chewable/proc/handle_reagents(obj/item/item, delta_time)
var/datum/reagents/reagents = item.reagents
var/metabolism_amount = metabolization_amount * delta_time
if (!reagents.trans_to(item.loc, metabolism_amount, methods = INGEST))
reagents.remove_any(metabolism_amount)
/datum/element/chewable/proc/on_dropped(datum/source)
SIGNAL_HANDLER
processing -= source
/datum/element/chewable/proc/on_equipped(datum/source, mob/equipper, slot)
SIGNAL_HANDLER
if (slot & slots_to_check)
processing += source
START_PROCESSING(SSdcs, src)
else
processing -= source