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Bubberstation/code/datums/elements/hat_wearer.dm
Waterpig d3d3a12540 The big fix for pixel_x and pixel_y use cases. (#90124)
## About The Pull Request

516 requires float layered overlays to be using pixel_w and pixel_z
instead of pixel_x and pixel_y respectively, unless we want
visual/layering errors. This makes sense, as w,z are for visual effects
only. Sadly seems we were not entirely consistent in this, and many
things seem to have been using x,y incorrectly.

This hopefully fixes that, and thus also fixes layering issues. Complete
1:1 compatibility not guaranteed.

I did the lazy way suggested to me by SmArtKar to speed it up (Runtiming
inside apply_overlays), and this is still included in the PR to flash
out possible issues in a TM (Plus I will need someone to grep the
runtimes for me after the TM period to make sure nothing was missed).
After this is done I'll remove all these extra checks.

Lints will probably be failing for a bit, got to wait for [this
update](4b77cd487d)
to them to make it into release. Or just unlint the lines, though that's
probably gonna produce code debt

## Why It's Good For The Game

Fixes this massive 516 mess, hopefully.

closes #90281

## Changelog
🆑
refactor: Changed many of our use cases for pixel_x and pixel_y
correctly into pixel_w and pixel_z, fixing layering issues in the
process.
/🆑

---------

Co-authored-by: SmArtKar <44720187+SmArtKar@users.noreply.github.com>
Co-authored-by: SmArtKar <master.of.bagets@gmail.com>
2025-03-28 14:18:45 +00:00

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/**
* # mobs that can wear hats!
*/
/datum/element/hat_wearer
element_flags = ELEMENT_DETACH_ON_HOST_DESTROY|ELEMENT_BESPOKE
argument_hash_start_idx = 2
///offsets of hats we will wear
var/list/offsets
///signals to remove the hat on
var/list/remove_hat_signals
///traits we check before adding the hat
var/traits_prevent_checks
/datum/element/hat_wearer/Attach(datum/target, offsets = list(), remove_hat_signals = list(), traits_prevent_checks = list())
. = ..()
if (!isliving(target))
return ELEMENT_INCOMPATIBLE
src.offsets = offsets
src.traits_prevent_checks = traits_prevent_checks
RegisterSignal(target, COMSIG_ATOM_UPDATE_OVERLAYS, PROC_REF(on_overlays_updated))
RegisterSignal(target, COMSIG_ATOM_EXITED, PROC_REF(exited))
RegisterSignal(target, COMSIG_ATOM_ENTERED, PROC_REF(on_entered))
RegisterSignal(target, COMSIG_ATOM_ATTACKBY, PROC_REF(on_attack_by))
if(!length(remove_hat_signals))
return
RegisterSignals(target, remove_hat_signals, PROC_REF(remove_hat))
/datum/element/hat_wearer/Detach(datum/target)
var/obj/item/hat = (locate(/obj/item/clothing/head) in target)
if(hat)
hat.forceMove(get_turf(target))
UnregisterSignal(target, list(
COMSIG_ATOM_UPDATE_OVERLAYS,
COMSIG_ATOM_EXITED,
COMSIG_ATOM_ENTERED,
COMSIG_ATOM_ATTACKBY,
))
if(length(remove_hat_signals))
UnregisterSignal(target, remove_hat_signals)
return ..()
/datum/element/hat_wearer/proc/on_overlays_updated(atom/source, list/overlays)
SIGNAL_HANDLER
var/obj/item/hat = (locate(/obj/item/clothing/head) in source)
if(isnull(hat))
return
var/mutable_appearance/hat_overlay = mutable_appearance(hat.worn_icon, hat.icon_state)
hat_overlay.pixel_w = offsets[1]
hat_overlay.pixel_z = offsets[2]
overlays += hat_overlay
/datum/element/hat_wearer/proc/exited(atom/movable/source, atom/movable/exited)
SIGNAL_HANDLER
if(!istype(exited, /obj/item/clothing/head))
return
source.update_appearance(UPDATE_OVERLAYS)
/datum/element/hat_wearer/proc/on_entered(atom/movable/source, atom/movable/arrived, atom/old_loc, list/atom/old_locs)
SIGNAL_HANDLER
if(!istype(arrived, /obj/item/clothing/head))
return
for(var/obj/item/clothing/head/already_worn in source)
if(already_worn == arrived)
continue
already_worn.forceMove(get_turf(source))
source.update_appearance(UPDATE_OVERLAYS)
/datum/element/hat_wearer/proc/on_attack_by(atom/movable/source, obj/item/item, mob/living/attacker)
SIGNAL_HANDLER
if(!istype(item, /obj/item/clothing/head))
return
for(var/trait_check in traits_prevent_checks)
if(HAS_TRAIT(source, trait_check))
source.balloon_alert(attacker, "not possible right now!")
return COMPONENT_NO_AFTERATTACK
INVOKE_ASYNC(src, PROC_REF(place_hat), source, item, attacker)
return COMPONENT_NO_AFTERATTACK
/datum/element/hat_wearer/proc/place_hat(atom/movable/source, obj/item/item, mob/living/attacker)
if(!do_after(attacker, delay = 3 SECONDS, target = source))
source.balloon_alert(attacker, "must stay still!")
return
item.forceMove(source)
/datum/element/hat_wearer/proc/remove_hat(atom/movable/source)
SIGNAL_HANDLER
var/obj/our_hat = locate(/obj/item/clothing/head) in source
if(isnull(our_hat))
return
our_hat.forceMove(source.drop_location())