code_imp: pref holder & improve pref viewer

code/__HELPERS/bitflags.dm

@@ -1,7 +1,7 @@
 #define HASBIT(CONTAINER, FLAG)     ((CONTAINER) & (FLAG))
 
-#define SETBIT(CONTAINER, FLAG)     (CONTAINER |= (FLAG))
+#define SETBIT(CONTAINER, FLAG)     ((CONTAINER) |= (FLAG))
 
-#define CLEARBIT(CONTAINER, FLAG)   (CONTAINER &= ~(FLAG))
+#define CLEARBIT(CONTAINER, FLAG)   ((CONTAINER) &= ~(FLAG))
 
-#define TOGGLEBIT(CONTAINER, FLAG)  (CONTAINER ^= (FLAG))
+#define TOGGLEBIT(CONTAINER, FLAG)  ((CONTAINER) ^= (FLAG))

code/__HELPERS/global_lists.dm

@@ -25,6 +25,7 @@
 
 	init_subtypes(/datum/surgery_step, GLOB.surgery_steps)
 	init_subtypes(/obj/item/slimepotion, GLOB.slime_potions)
+	init_subtypes(/datum/preference_info, GLOB.preferences_info)
 	// Different bodies
 	__init_body_accessory(/datum/body_accessory/body)
 	// Different tails

code/datums/components/pref_holder.dm

@@ -0,0 +1,49 @@
+/datum/component/pref_holder
+    var/list/preferences
+
+/datum/component/pref_holder/Destroy(force)
+    LAZYNULL(preferences)
+
+    return ..()
+
+/datum/component/pref_holder/Initialize(list/preferences)
+	var/mob/target = parent
+
+	if(!istype(target))
+		return COMPONENT_INCOMPATIBLE
+
+	src.preferences = preferences || forge_preferences()
+
+/datum/component/pref_holder/RegisterWithParent()
+    RegisterSignal(parent, COMSIG_BODY_TRANSFER_TO, PROC_REF(on_mind_transfer))
+
+/datum/component/pref_holder/UnregisterFromParent()
+    UnregisterSignal(parent, COMSIG_BODY_TRANSFER_TO)
+
+/datum/component/pref_holder/proc/on_mind_transfer(mob/source)
+    SIGNAL_HANDLER
+
+    preferences = forge_preferences()
+
+/datum/component/pref_holder/proc/forge_preferences()
+	var/mob/mob = parent
+
+	if(!mob.client)
+		return
+
+	var/list/prefs
+
+	for(var/datum/preference_info/pref as anything in GLOB.preferences_info)
+		var/datum/preference_toggle/toggle = pref.get_preference_toggle()
+
+		if(!toggle)
+			continue
+
+		if(!HASBIT(mob.client.prefs.toggles, toggle.preftoggle_bitflag) \
+        && !HASBIT(mob.client.prefs.toggles2, toggle.preftoggle_bitflag)
+        )   
+			continue
+
+		LAZYADD(prefs, new pref.type)
+
+	return prefs

code/datums/elements/pref_viewer.dm

@@ -0,0 +1,42 @@
+/datum/element/pref_viewer
+    element_flags = ELEMENT_DETACH_ON_HOST_DESTROY
+    var/list/preferences_to_show
+
+/datum/element/pref_viewer/Destroy(force)
+    LAZYNULL(preferences_to_show)
+
+    return ..()
+
+/datum/element/pref_viewer/Attach(
+	mob/target,
+	list/preferences_to_show
+	)
+	. = ..()
+
+	if(!istype(target))
+		return ELEMENT_INCOMPATIBLE
+
+	src.preferences_to_show = preferences_to_show
+	RegisterSignal(target, COMSIG_MOB_RUN_EXAMINATE, PROC_REF(on_examine))
+
+/datum/element/pref_viewer/Detach(mob/target)
+	. = ..()
+
+	UnregisterSignal(target, COMSIG_MOB_RUN_EXAMINATE)
+
+/datum/element/pref_viewer/proc/on_examine(mob/source, mob/target, list/result)
+    SIGNAL_HANDLER
+
+    if(!istype(target) || !target.client || !target.GetComponent(/datum/component/pref_holder))
+        return
+
+    INVOKE_ASYNC(src, PROC_REF(modify_examine), target, result)
+
+/datum/element/pref_viewer/proc/modify_examine(mob/target, list/result)
+	var/datum/component/pref_holder/holder = target.GetComponent(/datum/component/pref_holder)
+
+	for(var/datum/preference_info/info as anything in holder.preferences)
+		if(!is_type_in_list(info, preferences_to_show))
+			continue
+
+		LAZYADD(result, info.get_examine_text())

code/datums/mind.dm

@@ -148,7 +148,6 @@
 
 
 /datum/mind/proc/transfer_to(mob/living/new_character)
-
 	if(!istype(new_character))
 		stack_trace("transfer_to(): Some idiot has tried to transfer_to() a non mob/living mob.")
 

code/modules/antagonists/changeling/changeling_datum.dm

@@ -161,17 +161,17 @@ GLOBAL_LIST_INIT(possible_changeling_IDs, list("Alpha","Beta","Gamma","Delta","E
 	var/obj/item/organ/internal/brain/ling_brain = carbon_user.get_organ_slot(INTERNAL_ORGAN_BRAIN)
 	ling_brain?.decoy_brain = TRUE
 
-	user.AddComponent( \
-		/datum/component/pref_viewer, \
+	user.AddElement( \
+		/datum/element/pref_viewer, \
 		list(/datum/preference_info/take_out_of_the_round_without_obj), \
 	)
 
 /datum/antagonist/changeling/on_body_transfer(mob/living/old_body, mob/living/new_body)
 	. = ..()
-	qdel(old_body.GetComponent(/datum/component/pref_viewer))
+	old_body.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/changeling/handle_last_instance_removal()
-	qdel(owner.current.GetComponent(/datum/component/pref_viewer))
+	owner.current.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/changeling/remove_innate_effects(mob/living/mob_override)
 	var/mob/living/user = ..()

code/modules/antagonists/space_ninja/ninja_datum.dm

@@ -115,17 +115,17 @@
 	var/mob/living/user = ..()
 	user.faction = list(ROLE_NINJA)
 
-	user.AddComponent( \
-		/datum/component/pref_viewer, \
+	user.AddElement( \
+		/datum/element/pref_viewer, \
 		list(/datum/preference_info/take_out_of_the_round_without_obj), \
 	)
 
 /datum/antagonist/ninja/handle_last_instance_removal()
-	qdel(owner.current.GetComponent(/datum/component/pref_viewer))
+	owner.current.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/ninja/on_body_transfer(mob/living/old_body, mob/living/new_body)
 	. = ..()
-	qdel(old_body.GetComponent(/datum/component/pref_viewer))
+	old_body.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/ninja/proc/change_species(mob/living/mob_to_change = null) // This should be used to fully to remove robo-limbs & change species for lack of sprites
 	human_ninja = ishuman(mob_to_change) ? mob_to_change : null

code/modules/antagonists/traitor/datum_traitor.dm

@@ -39,17 +39,17 @@
 	datum_owner.AddComponent(/datum/component/codeword_hearing, GLOB.syndicate_code_phrase_regex, "codephrases", src)
 	datum_owner.AddComponent(/datum/component/codeword_hearing, GLOB.syndicate_code_response_regex, "coderesponses", src)
 
-	datum_owner.AddComponent( \
-		/datum/component/pref_viewer, \
+	datum_owner.AddElement( \
+		/datum/element/pref_viewer, \
 		list(/datum/preference_info/take_out_of_the_round_without_obj), \
 	)
 
 /datum/antagonist/traitor/on_body_transfer(mob/living/old_body, mob/living/new_body)
 	. = ..()
-	qdel(old_body.GetComponent(/datum/component/pref_viewer))
+	old_body.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/traitor/handle_last_instance_removal()
-	qdel(owner.current.GetComponent(/datum/component/pref_viewer))
+	owner.current.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/traitor/remove_innate_effects(mob/living/mob_override)
 	. = ..()

code/modules/antagonists/vampire/vampire_datum.dm

@@ -114,17 +114,17 @@
 			//slaved.leave_serv_hud(mob_override.mind)
 			//.mind.som = null
 
-	user.AddComponent( \
-		/datum/component/pref_viewer, \
+	user.AddElement( \
+		/datum/element/pref_viewer, \
 		list(/datum/preference_info/take_out_of_the_round_without_obj), \
 	)
 
 /datum/antagonist/vampire/on_body_transfer(mob/living/old_body, mob/living/new_body)
 	. = ..()
-	qdel(old_body.GetComponent(/datum/component/pref_viewer))
+	old_body.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/vampire/handle_last_instance_removal()
-	qdel(owner.current.GetComponent(/datum/component/pref_viewer))
+	owner.current.RemoveElement(/datum/element/pref_viewer)
 
 /datum/antagonist/vampire/remove_innate_effects(mob/living/mob_override, transformation = FALSE)
 	var/mob/living/user = ..()

code/modules/client/preference/preference_info.dm

@@ -1,3 +1,5 @@
+GLOBAL_LIST_INIT(preferences_info, list())
+
 /datum/preference_info
     var/name
 

code/modules/mob/mob.dm

@@ -39,6 +39,8 @@
 	if(can_strip())
 		ADD_TRAIT(src, TRAIT_CAN_STRIP, GENERIC_TRAIT)
 
+	AddComponent(/datum/component/pref_holder)
+
 /mob/vv_edit_var(var_name, var_value)
 	switch(var_name)
 		if(NAMEOF(src, focus))

code/modules/mob/new_player/new_player.dm

@@ -639,7 +639,7 @@
 		GLOB.human_names_list += new_character.real_name
 
 
-	new_character.key = key		//Manually transfer the key to log them in
+	new_character.key = key		// Manually transfer the key to log them in
 
 	return new_character
 

paradise.dme

@@ -498,8 +498,8 @@
 #include "code\datums\components\paintable.dm"
 #include "code\datums\components\pellet_cloud.dm"
 #include "code\datums\components\persistent_overlay.dm"
-#include "code\datums\components\pref_viewer.dm"
 #include "code\datums\components\proximity_monitor.dm"
+#include "code\datums\components\pref_holder.dm"
 #include "code\datums\components\radioactivity.dm"
 #include "code\datums\components\ritual_object.dm"
 #include "code\datums\components\shielded.dm"
@@ -592,6 +592,7 @@
 #include "code\datums\elements\devil_banishment.dm"
 #include "code\datums\elements\devil_regen.dm"
 #include "code\datums\elements\diona_internals.dm"
+#include "code\datums\elements\pref_viewer.dm"
 #include "code\datums\elements\falling_hazard.dm"
 #include "code\datums\elements\footstep.dm"
 #include "code\datums\elements\give_turf_traits.dm"