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Aurora.3/code/datums/observation/dir_set.dm
Fluffy ab23fbdb70 Function overloads condensation (#18939)
Unified most of the procs into one definition, so there are no duplicate
around the codebase.
Marked some of the above as overridable if a good enough case can be
made for them (eg. external dependency or unlikely to be used).
2024-04-19 21:19:41 +00:00

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// Observer Pattern Implementation: Direction Set
// Registration type: /atom
//
// Raised when: An /atom changes dir using the set_dir() proc.
//
// Arguments that the called proc should expect:
// /atom/dir_changer: The instance that changed direction
// /old_dir: The dir before the change.
// /new_dir: The dir after the change.
GLOBAL_DATUM_INIT(dir_set_event, /singleton/observ/dir_set, new)
/singleton/observ/dir_set
name = "Direction Set"
expected_type = /atom
/singleton/observ/dir_set/register(var/atom/dir_changer, var/datum/listener, var/proc_call)
. = ..()
// Listen to the parent if possible.
if(. && istype(dir_changer.loc, /atom/movable)) // We don't care about registering to turfs.
register(dir_changer.loc, dir_changer, TYPE_PROC_REF(/atom, recursive_dir_set))