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Bubberstation/code/datums/components/effect_remover.dm
SkyratBot 40f7364842 [MIRROR] Refactor cult dagger rune drawing and null rod rune clearing into components + minor rune / blood magic tweaks [MDB IGNORE] (#9662)
* Refactor cult dagger rune drawing and null rod rune clearing into components + minor rune / blood magic tweaks (#62918)

The act of inscribing runes, anchoring / unanchoring cult structures, deconstructing cult girders, and purging cultists of holy water have all been moved off of the cult dagger itself and onto a component, cult_ritual_item.

The act of destroying a cult rune or heretic rune with the null rod have been moved off of their respective items and onto the nullrod itself.

Added a signal, COMSIG_ITEM_ATTACK_EFFECT, for the above purposes.
Various cult spells and dagger interactions have had their code improved slightly.

* Refactor cult dagger rune drawing and null rod rune clearing into components + minor rune / blood magic tweaks

Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>
2021-11-23 12:45:12 -05:00

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/*
* Simple component for something that is able to destroy
* certain effects (such as cult runes) in one attack.
*/
/datum/component/effect_remover
/// Line sent to the user on successful removal.
var/success_feedback
/// Line forcesaid by the user on successful removal.
var/success_forcesay
/// Callback invoked with removal is done.
var/datum/callback/on_clear_callback
/// A typecache of all effects we can clear with our item.
var/list/obj/effect/effects_we_clear
/datum/component/effect_remover/Initialize(
success_forcesay,
success_feedback,
on_clear_callback,
effects_we_clear,
)
. = ..()
if(!isitem(parent))
return COMPONENT_INCOMPATIBLE
if(!effects_we_clear)
stack_trace("[type] was instantiated without any valid removable effects!")
return COMPONENT_INCOMPATIBLE
src.success_feedback = success_feedback
src.success_forcesay = success_forcesay
src.on_clear_callback = on_clear_callback
src.effects_we_clear = typecacheof(effects_we_clear)
/datum/component/effect_remover/RegisterWithParent()
RegisterSignal(parent, COMSIG_ITEM_ATTACK_EFFECT, .proc/try_remove_effect)
/datum/component/effect_remover/UnregisterFromParent()
UnregisterSignal(parent, COMSIG_ITEM_ATTACK_EFFECT)
/*
* Signal proc for [COMSIG_ITEM_ATTACK_EFFECT].
*/
/datum/component/effect_remover/proc/try_remove_effect(datum/source, obj/effect/target, mob/living/user, params)
SIGNAL_HANDLER
if(!isliving(user))
return
if(effects_we_clear[target.type]) // Make sure we get all subtypes and everything
INVOKE_ASYNC(src, .proc/do_remove_effect, target, user)
return COMPONENT_NO_AFTERATTACK
/*
* Actually removes the effect, invoking our on_clear_callback before it's deleted.
*/
/datum/component/effect_remover/proc/do_remove_effect(obj/effect/target, mob/living/user)
var/obj/item/item_parent = parent
if(success_forcesay)
user.say(success_forcesay, forced = item_parent.name)
if(success_feedback)
var/real_feedback = replacetext(success_feedback, "%THEEFFECT", "[target]")
real_feedback = replacetext(real_feedback, "%THEWEAPON", "[item_parent]")
to_chat(user, span_notice(real_feedback))
on_clear_callback?.Invoke(target, user)
qdel(target)