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Bubberstation/code/datums/elements/rust.dm
SkyratBot 59b73c3d65 [MIRROR] Cleans up thermite component code [MDB IGNORE] (#20686)
* Cleans up thermite component code (#74825)

## About The Pull Request

Nothing too interesting to be quite honest, just cleans up the thermite
component code a bit because it was a bit weird.

## Why It's Good For The Game

This probably fixes a few rare bugs where the thermite overlay
disappears due to an update_icon call. Slightly neater code.
Also, adds an examine message to thermite walls because small QoL stuff
is neat.

## Changelog

🆑
qol: Thermited walls now get an examine message telling you they are, in
fact, thermited.
/🆑

---------

Co-authored-by: san7890 <the@ san7890.com>

* Cleans up thermite component code

---------

Co-authored-by: ChungusGamer666 <82850673+ChungusGamer666@users.noreply.github.com>
Co-authored-by: san7890 <the@ san7890.com>
2023-04-21 17:21:21 -04:00

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/**
* Adding this element to an atom will have it automatically render an overlay.
* The overlay can be specified in new as the first paramter; if not set it defaults to rust_overlay's rust_default
*/
/datum/element/rust
element_flags = ELEMENT_BESPOKE | ELEMENT_DETACH_ON_HOST_DESTROY // Detach for turfs
argument_hash_start_idx = 2
/// The rust image itself, since the icon and icon state are only used as an argument
var/image/rust_overlay
/datum/element/rust/Attach(atom/target, rust_icon = 'icons/effects/rust_overlay.dmi', rust_icon_state = "rust_default")
. = ..()
if(!isatom(target))
return ELEMENT_INCOMPATIBLE
if(!rust_overlay)
rust_overlay = image(rust_icon, rust_icon_state)
ADD_TRAIT(target, TRAIT_RUSTY, ELEMENT_TRAIT(type))
RegisterSignal(target, COMSIG_ATOM_UPDATE_OVERLAYS, PROC_REF(apply_rust_overlay))
RegisterSignal(target, COMSIG_PARENT_EXAMINE, PROC_REF(handle_examine))
RegisterSignals(target, list(COMSIG_ATOM_SECONDARY_TOOL_ACT(TOOL_WELDER), COMSIG_ATOM_SECONDARY_TOOL_ACT(TOOL_RUSTSCRAPER)), PROC_REF(secondary_tool_act))
// Unfortunately registering with parent sometimes doesn't cause an overlay update
target.update_appearance()
/datum/element/rust/Detach(atom/source)
. = ..()
UnregisterSignal(source, COMSIG_ATOM_UPDATE_OVERLAYS)
UnregisterSignal(source, COMSIG_PARENT_EXAMINE)
UnregisterSignal(source, list(COMSIG_ATOM_SECONDARY_TOOL_ACT(TOOL_WELDER), COMSIG_ATOM_SECONDARY_TOOL_ACT(TOOL_RUSTSCRAPER)))
REMOVE_TRAIT(source, TRAIT_RUSTY, ELEMENT_TRAIT(type))
source.update_appearance()
/datum/element/rust/proc/handle_examine(datum/source, mob/user, list/examine_text)
SIGNAL_HANDLER
examine_text += span_notice("[source] is very rusty, you could probably <i>burn</i> or <i>scrape</i> it off.")
/datum/element/rust/proc/apply_rust_overlay(atom/parent_atom, list/overlays)
SIGNAL_HANDLER
if(rust_overlay)
overlays += rust_overlay
/// Because do_after sleeps we register the signal here and defer via an async call
/datum/element/rust/proc/secondary_tool_act(atom/source, mob/user, obj/item/item)
SIGNAL_HANDLER
INVOKE_ASYNC(src, PROC_REF(handle_tool_use), source, user, item)
return COMPONENT_BLOCK_TOOL_ATTACK
/// We call this from secondary_tool_act because we sleep with do_after
/datum/element/rust/proc/handle_tool_use(atom/source, mob/user, obj/item/item)
switch(item.tool_behaviour)
if(TOOL_WELDER)
if(!item.tool_start_check(user, amount=5))
return
user.balloon_alert(user, "burning off rust...")
if(!item.use_tool(source, user, 5 SECONDS))
return
user.balloon_alert(user, "burned off rust")
Detach(source)
return
if(TOOL_RUSTSCRAPER)
if(!item.tool_start_check(user))
return
user.balloon_alert(user, "scraping off rust...")
if(!item.use_tool(source, user, 2 SECONDS))
return
user.balloon_alert(user, "scraped off rust")
Detach(source)
return