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Bubberstation/code/datums/components/heirloom.dm
MrMelbert 0f68572a58 Fixes runtime errors that occur when mindless mobs examine heirlooms, + code improvements (#64827)
Mindless mobs (such as observers without an initialized mind) examining family heirlooms would cause runtime errors due to the user.mind.has_antag_datum(...) line.

    Rearranges the examine proc to prevent runtimes from occurring due to mindless mobs examining heirlooms. Adds an observer check at the beginning, just for sanity sake, even though it doesn't matter functionally.
    Renamed the proc to on_examine for clarity
    Auto doc'd the proc + comments
    Handled a reference on Destroy
2022-02-11 14:00:31 -08:00

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/// Heirloom component. For use with the family heirloom quirk, tracks that an item is someone's family heirloom.
/datum/component/heirloom
/// The mind that actually owns our heirloom.
var/datum/mind/owner
/// Flavor. The family name of the owner of the heirloom.
var/family_name
/datum/component/heirloom/Initialize(new_owner, new_family_name)
if(!isitem(parent))
return COMPONENT_INCOMPATIBLE
owner = new_owner
family_name = new_family_name
RegisterSignal(parent, COMSIG_PARENT_EXAMINE, .proc/on_examine)
/datum/component/heirloom/Destroy(force, silent)
owner = null
return ..()
/**
* Signal proc for [COMSIG_PARENT_EXAMINE].
*
* Shows who owns the heirloom on examine.
*/
/datum/component/heirloom/proc/on_examine(datum/source, mob/user, list/examine_list)
SIGNAL_HANDLER
var/datum/mind/examiner_mind = user.mind
if(examiner_mind == owner)
examine_list += span_notice("It is your precious [family_name] family heirloom. Keep it safe!")
return
var/datum/antagonist/obsessed/our_creeper = examiner_mind?.has_antag_datum(/datum/antagonist/obsessed)
if(our_creeper?.trauma.obsession == owner)
examine_list += span_nicegreen("This must be [owner]'s family heirloom! It smells just like them...")
return
examine_list += span_notice("It is the [family_name] family heirloom, belonging to [owner].")