Turning a few components into elements. (#12325)

* Turning a few components into elements. * eh
2020-05-24 22:06:27 +02:00
parent 02f467654e
commit ce1f1bdf5e
20 changed files with 116 additions and 100 deletions
@@ -0,0 +1,18 @@
+/datum/element/empprotection
+	element_flags = ELEMENT_DETACH | ELEMENT_BESPOKE
+	id_arg_index = 2
+	var/flags = NONE
+
+/datum/element/empprotection/Attach(datum/target, _flags)
+	. = ..()
+	if(. == ELEMENT_INCOMPATIBLE || !isatom(target))
+		return ELEMENT_INCOMPATIBLE
+	flags = _flags
+	RegisterSignal(target, COMSIG_ATOM_EMP_ACT, .proc/getEmpFlags)
+
+/datum/element/empprotection/Detach(atom/target)
+	UnregisterSignal(target, COMSIG_ATOM_EMP_ACT)
+	return ..()
+
+/datum/element/empprotection/proc/getEmpFlags(datum/source, severity)
+	return flags
@@ -0,0 +1,30 @@
+/datum/element/forced_gravity
+	element_flags = ELEMENT_BESPOKE
+	id_arg_index = 2
+	var/gravity
+	var/ignore_space
+
+/datum/element/forced_gravity/Attach(datum/target, gravity=1, ignore_space=FALSE)
+	. = ..()
+	if(!isatom(target))
+		return ELEMENT_INCOMPATIBLE
+
+	src.gravity = gravity
+	src.ignore_space = ignore_space
+
+	RegisterSignal(target, COMSIG_ATOM_HAS_GRAVITY, .proc/gravity_check)
+	if(isturf(target))
+		RegisterSignal(target, COMSIG_TURF_HAS_GRAVITY, .proc/turf_gravity_check)
+
+/datum/element/forced_gravity/Detach(datum/source, force)
+	. = ..()
+	var/static/list/signals_b_gone = list(COMSIG_ATOM_HAS_GRAVITY, COMSIG_TURF_HAS_GRAVITY)
+	UnregisterSignal(source, signals_b_gone)
+
+/datum/element/forced_gravity/proc/gravity_check(datum/source, turf/location, list/gravs)
+	if(!ignore_space && isspaceturf(location))
+		return
+	gravs += gravity
+
+/datum/element/forced_gravity/proc/turf_gravity_check(datum/source, atom/checker, list/gravs)
+	return gravity_check(null, source, gravs)
@@ -0,0 +1,37 @@
+/datum/element/tactical
+	element_flags = ELEMENT_BESPOKE|ELEMENT_DETACH
+	id_arg_index = 2
+	var/allowed_slot
+
+/datum/element/tactical/Attach(datum/target, allowed_slot)
+	. = ..()
+	if(. == ELEMENT_INCOMPATIBLE || !isitem(target))
+		return ELEMENT_INCOMPATIBLE
+
+	src.allowed_slot = allowed_slot
+	RegisterSignal(target, COMSIG_ITEM_EQUIPPED, .proc/modify)
+	RegisterSignal(target, COMSIG_ITEM_DROPPED, .proc/unmodify)
+
+/datum/element/tactical/Detach(datum/target)
+	UnregisterSignal(target, list(COMSIG_ITEM_EQUIPPED, COMSIG_ITEM_DROPPED))
+	unmodify()
+	return ..()
+
+/datum/element/tactical/proc/modify(obj/item/source, mob/user, slot)
+	if(allowed_slot && slot != allowed_slot)
+		unmodify()
+		return
+
+	var/image/I = image(icon = source.icon, icon_state = source.icon_state, loc = user)
+	I.copy_overlays(source)
+	I.override = TRUE
+	source.add_alt_appearance(/datum/atom_hud/alternate_appearance/basic/everyone, "sneaking_mission", I)
+	I.layer = ABOVE_MOB_LAYER
+
+/datum/element/tactical/proc/unmodify(obj/item/source, mob/user)
+	if(!user)
+		if(!ismob(source.loc))
+			return
+		user = source.loc
+
+	user.remove_alt_appearance("sneaking_mission")