Add null checks to client prefs checks

client.prefs. -> client?.prefs?.

code/modules/mob/dead/new_player/login.dm

@@ -37,8 +37,8 @@
 			postfix = "soon"
 		to_chat(src, "Please set up your character and select \"Ready\". The game will start [postfix].")
 
-	if(client.prefs.path)	//Hyper edit: notify of a newer preference version
-		var/savefile/S = new /savefile(client.prefs.path)
+	if(client?.prefs?.path)	//Hyper edit: notify of a newer preference version
+		var/savefile/S = new /savefile(client?.prefs?.path)
 		if(S)
 			S.cd = "/"
 			var/slot

code/modules/mob/dead/new_player/new_player.dm

@@ -32,7 +32,7 @@
 	return
 
 /mob/dead/new_player/proc/new_player_panel()
-	var/output = "<center><p>Welcome, <b>[client ? client.prefs.real_name : "Unknown User"]</b></p>"
+	var/output = "<center><p>Welcome, <b>[client ? client?.prefs?.real_name : "Unknown User"]</b></p>"
 	output += "<p><a href='byond://?src=[REF(src)];show_preferences=1'>Setup Character</a></p>"
 
 	if(SSticker.current_state <= GAME_STATE_PREGAME)
@@ -93,7 +93,7 @@
 		relevant_cap = max(hpc, epc)
 
 	if(href_list["show_preferences"])
-		client.prefs.ShowChoices(src)
+		client?.prefs?.ShowChoices(src)
 		return 1
 
 	if(href_list["ready"])
@@ -122,7 +122,7 @@
 			LateChoices()
 			return
 
-		// if(client.prefs.real_name in client.pastcharacters) //if character has been spawned before
+		// if(client?.prefs?.real_name in client.pastcharacters) //if character has been spawned before
 		// 	to_chat(usr, "<span class='notice'>You have played that character before this round, please select a new one!</span>")
 		// 	return
 
@@ -183,7 +183,7 @@
 
 	if(!ready && href_list["preference"])
 		if(client)
-			client.prefs.process_link(src, href_list)
+			client?.prefs?.process_link(src, href_list)
 	else if(!href_list["late_join"])
 		new_player_panel()
 
@@ -303,7 +303,7 @@
 	observer.client = client
 	observer.set_ghost_appearance()
 	if(observer.client && observer.client.prefs)
-		observer.real_name = observer.client.prefs.real_name
+		observer.real_name = observer.client?.prefs?.real_name
 		observer.name = observer.real_name
 		observer.client.init_verbs()
 	observer.update_icon()
@@ -346,11 +346,11 @@
 	if(jobban_isbanned(src,rank))
 		return JOB_UNAVAILABLE_BANNED
 	if(job.whitelist_type) //whitelisting
-		if(job.whitelist_type == "roleplay" && !client.prefs.roleplayroles)
+		if(job.whitelist_type == "roleplay" && !client?.prefs?.roleplayroles)
 			return JOB_UNAVAILABLE_WHITELIST
-		if(job.whitelist_type == "important" && !client.prefs.importantroles)
+		if(job.whitelist_type == "important" && !client?.prefs?.importantroles)
 			return JOB_UNAVAILABLE_WHITELIST
-		if(job.whitelist_type == "silly" && !client.prefs.sillyroles)
+		if(job.whitelist_type == "silly" && !client?.prefs?.sillyroles)
 			return JOB_UNAVAILABLE_WHITELIST
 	if(QDELETED(src))
 		return JOB_UNAVAILABLE_GENERIC
@@ -554,8 +554,8 @@
 					jobline += "<a class='[position_class]' style='display:block;width:170px' href='byond://?src=[REF(src)];SelectedJob=[job.title]'><font color='lime'><b>[job.title] ([job.current_positions])</b></font></a>"
 				else
 					jobline += "<a class='[position_class]' style='display:block;width:170px' href='byond://?src=[REF(src)];SelectedJob=[job.title]'>[job.title] ([job.current_positions])</a>"
-				if(client && client.prefs && client.prefs.alt_titles_preferences[job.title])
-					jobline += "<br><span style='color:#BBBBBB; font-style: italic;'>(as [client.prefs.alt_titles_preferences[job.title]])</span>"
+				if(client && client.prefs && client?.prefs?.alt_titles_preferences[job.title])
+					jobline += "<br><span style='color:#BBBBBB; font-style: italic;'>(as [client?.prefs?.alt_titles_preferences[job.title]])</span>"
 				dat += jobline
 				categorizedJobs[jobcat]["jobs"] -= job
 
@@ -588,9 +588,9 @@
 		if(QDELETED(src))
 			return
 	if(frn)
-		client.prefs.random_character()
-		client.prefs.real_name = client.prefs.pref_species.random_name(gender,1)
-	client.prefs.copy_to(H)
+		client?.prefs?.random_character()
+		client?.prefs?.real_name = client?.prefs?.pref_species.random_name(gender,1)
+	client?.prefs?.copy_to(H)
 
 	H.dna.update_dna_identity()
 	if(mind)

code/modules/mob/dead/observer/login.dm

@@ -3,16 +3,16 @@
 	if(!. || !client)
 		return FALSE
 
-	ghost_accs = client.prefs.ghost_accs
-	ghost_others = client.prefs.ghost_others
+	ghost_accs = client?.prefs?.ghost_accs
+	ghost_others = client?.prefs?.ghost_others
 	var/preferred_form = null
 
 	if(IsAdminGhost(src))
 		has_unlimited_silicon_privilege = 1
 
-	if(client.prefs.unlock_content)
-		preferred_form = client.prefs.ghost_form
-		ghost_orbit = client.prefs.ghost_orbit
+	if(client?.prefs?.unlock_content)
+		preferred_form = client?.prefs?.ghost_form
+		ghost_orbit = client?.prefs?.ghost_orbit
 
 	var/turf/T = get_turf(src)
 	if (isturf(T))

code/modules/mob/dead/observer/observer.dm

@@ -175,8 +175,8 @@ GLOBAL_VAR_INIT(observer_default_invisibility, INVISIBILITY_OBSERVER)
 /mob/dead/observer/update_icon(new_form)
 	. = ..()
 	if(client) //We update our preferences in case they changed right before update_icon was called.
-		ghost_accs = client.prefs.ghost_accs
-		ghost_others = client.prefs.ghost_others
+		ghost_accs = client?.prefs?.ghost_accs
+		ghost_others = client?.prefs?.ghost_others
 
 	if(hair_overlay)
 		cut_overlay(hair_overlay)
@@ -268,9 +268,9 @@ Works together with spawning an observer, noted above.
 	var/mob/dead/observer/ghost = new(get_turf(src), src)	// Transfer safety to observer spawning proc.
 	SStgui.on_transfer(src, ghost) // Transfer NanoUIs.
 	ghost.can_reenter_corpse = can_reenter_corpse
-	if (client && client.prefs && client.prefs.auto_ooc)
-		if (!(client.prefs.chat_toggles & CHAT_OOC))
-			client.prefs.chat_toggles ^= CHAT_OOC
+	if (client && client.prefs && client?.prefs?.auto_ooc)
+		if (!(client?.prefs?.chat_toggles & CHAT_OOC))
+			client?.prefs?.chat_toggles ^= CHAT_OOC
 	transfer_ckey(ghost, FALSE)
 	ghost.AddElement(/datum/element/ghost_role_eligibility,penalize) // technically already run earlier, but this adds the penalty
 	// needs to be done AFTER the ckey transfer, too
@@ -378,8 +378,8 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 		if(source)
 			var/obj/screen/alert/A = throw_alert("[REF(source)]_notify_cloning", /obj/screen/alert/notify_cloning)
 			if(A)
-				if(client && client.prefs && client.prefs.UI_style)
-					A.icon = ui_style2icon(client.prefs.UI_style)
+				if(client && client.prefs && client?.prefs?.UI_style)
+					A.icon = ui_style2icon(client?.prefs?.UI_style)
 				A.desc = message
 				var/old_layer = source.layer
 				var/old_plane = source.plane
@@ -506,7 +506,7 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 	set name = "View Range"
 	set desc = "Change your view range."
 
-	var/max_view = client.prefs.unlock_content ? GHOST_MAX_VIEW_RANGE_MEMBER : GHOST_MAX_VIEW_RANGE_DEFAULT
+	var/max_view = client?.prefs?.unlock_content ? GHOST_MAX_VIEW_RANGE_MEMBER : GHOST_MAX_VIEW_RANGE_DEFAULT
 	if(client.view == CONFIG_GET(string/default_view))
 		var/list/views = list()
 		for(var/i in 7 to max_view)
@@ -520,7 +520,7 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 /mob/dead/observer/verb/add_view_range(input as num)
 	set name = "Add View Range"
 	set hidden = TRUE
-	var/max_view = client.prefs.unlock_content ? GHOST_MAX_VIEW_RANGE_MEMBER : GHOST_MAX_VIEW_RANGE_DEFAULT
+	var/max_view = client?.prefs?.unlock_content ? GHOST_MAX_VIEW_RANGE_MEMBER : GHOST_MAX_VIEW_RANGE_DEFAULT
 	if(input)
 		client.rescale_view(input, 15, (max_view*2)+1)
 
@@ -573,7 +573,7 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 
 /mob/dead/observer/update_sight()
 	if(client)
-		ghost_others = client.prefs.ghost_others //A quick update just in case this setting was changed right before calling the proc
+		ghost_others = client?.prefs?.ghost_others //A quick update just in case this setting was changed right before calling the proc
 
 	if (!ghostvision)
 		see_invisible = SEE_INVISIBLE_LIVING
@@ -601,11 +601,11 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 				client.images -= GLOB.ghost_images_default
 			if(GHOST_OTHERS_SIMPLE)
 				client.images -= GLOB.ghost_images_simple
-	lastsetting = client.prefs.ghost_others
+	lastsetting = client?.prefs?.ghost_others
 	if(!ghostvision)
 		return
-	if(client.prefs.ghost_others != GHOST_OTHERS_THEIR_SETTING)
-		switch(client.prefs.ghost_others)
+	if(client?.prefs?.ghost_others != GHOST_OTHERS_THEIR_SETTING)
+		switch(client?.prefs?.ghost_others)
 			if(GHOST_OTHERS_DEFAULT_SPRITE)
 				client.images |= (GLOB.ghost_images_default-ghostimage_default)
 			if(GHOST_OTHERS_SIMPLE)
@@ -741,23 +741,23 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 
 	set_ghost_appearance()
 	if(client && client.prefs)
-		deadchat_name = client.prefs.real_name
+		deadchat_name = client?.prefs?.real_name
 
 /mob/dead/observer/proc/set_ghost_appearance()
 	if((!client) || (!client.prefs))
 		return
 
-	if(client.prefs.be_random_name)
-		client.prefs.real_name = random_unique_name(gender)
-	if(client.prefs.be_random_body)
-		client.prefs.random_character(gender)
+	if(client?.prefs?.be_random_name)
+		client?.prefs?.real_name = random_unique_name(gender)
+	if(client?.prefs?.be_random_body)
+		client?.prefs?.random_character(gender)
 
-	if(HAIR in client.prefs.pref_species.species_traits)
-		hair_style = client.prefs.hair_style
-		hair_color = brighten_color(client.prefs.hair_color)
-	if(FACEHAIR in client.prefs.pref_species.species_traits)
-		facial_hair_style = client.prefs.facial_hair_style
-		facial_hair_color = brighten_color(client.prefs.facial_hair_color)
+	if(HAIR in client?.prefs?.pref_species.species_traits)
+		hair_style = client?.prefs?.hair_style
+		hair_color = brighten_color(client?.prefs?.hair_color)
+	if(FACEHAIR in client?.prefs?.pref_species.species_traits)
+		facial_hair_style = client?.prefs?.facial_hair_style
+		facial_hair_color = brighten_color(client?.prefs?.facial_hair_color)
 
 	update_icon()
 

code/modules/mob/dead/observer/say.dm

@@ -34,7 +34,7 @@
 			to_follow = V.source
 	var/link = FOLLOW_LINK(src, to_follow)
 		// Create map text prior to modifying message for goonchat
-	if (client?.prefs.chat_on_map && (client.prefs.see_chat_non_mob || ismob(speaker)))
+	if (client?.prefs.chat_on_map && (client?.prefs?.see_chat_non_mob || ismob(speaker)))
 		create_chat_message(speaker, message_language, raw_message, spans, message_mode)
 	// Recompose the message, because it's scrambled by default
 	message = compose_message(speaker, message_language, raw_message, radio_freq, spans, message_mode, FALSE, source)

code/modules/mob/living/carbon/human/species.dm

@@ -313,7 +313,7 @@ GLOBAL_LIST_EMPTY(roundstart_races)
 		C.canbearoused = FALSE
 	else
 		if(C.client)
-			C.canbearoused = C.client.prefs.arousable
+			C.canbearoused = C.client?.prefs?.arousable
 	if(ishuman(C))
 		var/mob/living/carbon/human/H = C
 		if(NOGENITALS in H.dna.species.species_traits)

code/modules/mob/living/carbon/human/species_types/mothmen.dm

@@ -21,7 +21,7 @@
 	if(ishuman(C))
 		var/mob/living/carbon/human/H = C
 		if(!H.dna.features["moth_wings"])
-			H.dna.features["moth_wings"] = "[(H.client && H.client.prefs && LAZYLEN(H.client.prefs.features) && H.client.prefs.features["moth_wings"]) ? H.client.prefs.features["moth_wings"] : "Plain"]"
+			H.dna.features["moth_wings"] = "[(H.client && H.client.prefs && LAZYLEN(H.client?.prefs?.features) && H.client?.prefs?.features["moth_wings"]) ? H.client?.prefs?.features["moth_wings"] : "Plain"]"
 			handle_mutant_bodyparts(H)
 
 /datum/species/moth/random_name(gender,unique,lastname)

code/modules/mob/living/carbon/human/whisper.dm

@@ -25,7 +25,7 @@
 	log_whisper("[src.name]/[src.key] : [message]")
 
 	if (src.client)
-		if (src.client.prefs.muted & MUTE_IC)
+		if (src.client?.prefs?.muted & MUTE_IC)
 			to_chat(src, "<span class='danger'>You cannot whisper (muted).</span>")
 			return
 
@@ -54,7 +54,7 @@
 
 	var/list/listening_dead = list()
 	for(var/mob/M in GLOB.player_list)
-		if(M.stat == DEAD && M.client && ((M.client.prefs.chat_toggles & CHAT_GHOSTWHISPER) || (get_dist(M, src) <= 7)))
+		if(M.stat == DEAD && M.client && ((M.client?.prefs?.chat_toggles & CHAT_GHOSTWHISPER) || (get_dist(M, src) <= 7)))
 			listening_dead |= M
 
 	var/list/listening = get_hearers_in_view(1, src)

code/modules/mob/living/emote.dm

@@ -410,7 +410,7 @@
 		return FALSE
 	else if(QDELETED(user))
 		return FALSE
-	else if(user.client && user.client.prefs.muted & MUTE_IC)
+	else if(user.client && user.client?.prefs?.muted & MUTE_IC)
 		to_chat(user, "You cannot send IC messages (muted).")
 		return FALSE
 	else if(!params)

code/modules/mob/living/living.dm

@@ -1105,7 +1105,7 @@
 		if(client)
 			client.move_delay = world.time + movement_delay()
 	lying_prev = lying
-	if(canmove && !intentionalresting && iscarbon(src) && client && client.prefs && client.prefs.autostand)//CIT CHANGE - adds autostanding as a preference
+	if(canmove && !intentionalresting && iscarbon(src) && client && client.prefs && client?.prefs?.autostand)//CIT CHANGE - adds autostanding as a preference
 		addtimer(CALLBACK(src, .proc/resist_a_rest, TRUE), 0) //CIT CHANGE - ditto
 	return canmove
 

code/modules/mob/living/say.dm

@@ -249,7 +249,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 		deaf_message = "<span class='notice'>You can't hear yourself!</span>"
 		deaf_type = 2 // Since you should be able to hear yourself without looking
 		// Create map text prior to modifying message for goonchat
-	if (client?.prefs.chat_on_map && stat != UNCONSCIOUS && (client.prefs.see_chat_non_mob || ismob(speaker)) && can_hear())
+	if (client?.prefs.chat_on_map && stat != UNCONSCIOUS && (client?.prefs?.see_chat_non_mob || ismob(speaker)) && can_hear())
 		create_chat_message(speaker, message_language, raw_message, spans, message_mode)
 	if (client?.prefs.radiosounds && stat != UNCONSCIOUS && can_hear() && radio_freq)
 		playsound_local(src,'sound/voice/radio.ogg', 30, 0)
@@ -281,9 +281,9 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 		if(!M.client || !client) //client is so that ghosts don't have to listen to mice
 			continue
 		if(get_dist(M, source) > 7 || M.z != z) //they're out of range of normal hearing
-			if(eavesdropping_modes[message_mode] && !(M.client.prefs.chat_toggles & CHAT_GHOSTWHISPER)) //they're whispering and we have hearing whispers at any range off
+			if(eavesdropping_modes[message_mode] && !(M.client?.prefs?.chat_toggles & CHAT_GHOSTWHISPER)) //they're whispering and we have hearing whispers at any range off
 				continue
-			if(!(M.client.prefs.chat_toggles & CHAT_GHOSTEARS)) //they're talking normally and we have hearing at any range off
+			if(!(M.client?.prefs?.chat_toggles & CHAT_GHOSTEARS)) //they're talking normally and we have hearing at any range off
 				continue
 		listening |= M
 		the_dead[M] = TRUE
@@ -306,7 +306,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 	//speech bubble
 	var/list/speech_bubble_recipients = list()
 	for(var/mob/M in listening)
-		if(M.client && !M.client.prefs.chat_on_map)
+		if(M.client && !M.client?.prefs?.chat_on_map)
 			speech_bubble_recipients.Add(M.client)
 	var/image/I = image('icons/mob/talk.dmi', src, "[bubble_type][say_test(message)]", FLY_LAYER)
 	I.appearance_flags = APPEARANCE_UI_IGNORE_ALPHA
@@ -321,7 +321,7 @@ GLOBAL_LIST_INIT(department_radio_keys, list(
 
 /mob/living/proc/can_speak_basic(message, ignore_spam = FALSE) //Check BEFORE handling of xeno and ling channels
 	if(client)
-		if(client.prefs.muted & MUTE_IC)
+		if(client?.prefs?.muted & MUTE_IC)
 			to_chat(src, "<span class='danger'>You cannot speak in IC (muted).</span>")
 			return 0
 		if(!ignore_spam && client.handle_spam_prevention(message,MUTE_IC))

code/modules/mob/living/silicon/ai/ai.dm

@@ -830,7 +830,7 @@
 		jobpart = "Unknown"
 
 	var/rendered = "<i><span class='game say'>[start]<span class='name'>[hrefpart][namepart] ([jobpart])</a> </span><span class='message'>[treated_message]</span></span></i>"
-	if (client?.prefs.chat_on_map && (client.prefs.see_chat_non_mob || ismob(speaker)))
+	if (client?.prefs.chat_on_map && (client?.prefs?.see_chat_non_mob || ismob(speaker)))
 		create_chat_message(speaker, message_language, raw_message, spans, message_mode)
 
 	show_message(rendered, MSG_AUDIBLE)

code/modules/mob/living/silicon/ai/say.dm

@@ -151,7 +151,7 @@
 		if(!only_listener)
 			// Play voice for all mobs in the z level
 			for(var/mob/M in GLOB.player_list)
-				if(M.client && M.can_hear() && (M.client.prefs.toggles & SOUND_ANNOUNCEMENTS))
+				if(M.client && M.can_hear() && (M.client?.prefs?.toggles & SOUND_ANNOUNCEMENTS))
 					var/turf/T = get_turf(M)
 					if(T.z == z_level)
 						SEND_SOUND(M, voice)

code/modules/mob/login.dm

@@ -13,7 +13,7 @@
 		create_mob_hud()
 	if(hud_used)
 		hud_used.show_hud(hud_used.hud_version)
-		hud_used.update_ui_style(ui_style2icon(client.prefs.UI_style))
+		hud_used.update_ui_style(ui_style2icon(client?.prefs?.UI_style))
 
 	next_move = 1
 

code/modules/mob/mob.dm

@@ -488,11 +488,11 @@ mob/visible_message(message, self_message, blind_message, vision_distance = DEFA
 	if(!ckey)
 		return
 	SEND_SIGNAL(new_mob, COMSIG_MOB_PRE_PLAYER_CHANGE, new_mob, src)
-	if (client && client.prefs && client.prefs.auto_ooc)
-		if (client.prefs.chat_toggles & CHAT_OOC && isliving(new_mob))
-			client.prefs.chat_toggles ^= CHAT_OOC
-		if (!(client.prefs.chat_toggles & CHAT_OOC) && isdead(new_mob))
-			client.prefs.chat_toggles ^= CHAT_OOC
+	if (client && client.prefs && client?.prefs?.auto_ooc)
+		if (client?.prefs?.chat_toggles & CHAT_OOC && isliving(new_mob))
+			client?.prefs?.chat_toggles ^= CHAT_OOC
+		if (!(client?.prefs?.chat_toggles & CHAT_OOC) && isdead(new_mob))
+			client?.prefs?.chat_toggles ^= CHAT_OOC
 	new_mob.ckey = ckey
 	new_mob.client?.init_verbs()
 	if(send_signal)

code/modules/mob/mob_helpers.dm

@@ -401,8 +401,8 @@ It's fairly easy to fix if dealing with single letters but not so much with comp
 			if(source)
 				var/obj/screen/alert/notify_action/A = O.throw_alert("[REF(source)]_notify_action", /obj/screen/alert/notify_action)
 				if(A)
-					if(O.client.prefs && O.client.prefs.UI_style)
-						A.icon = ui_style2icon(O.client.prefs.UI_style)
+					if(O.client.prefs && O.client?.prefs?.UI_style)
+						A.icon = ui_style2icon(O.client?.prefs?.UI_style)
 					A.desc = message
 					A.action = action
 					A.target = source

code/modules/mob/say.dm

@@ -90,7 +90,7 @@
 
 
 	if (src.client)
-		if(src.client.prefs.muted & MUTE_DEADCHAT)
+		if(src.client?.prefs?.muted & MUTE_DEADCHAT)
 			to_chat(src, "<span class='danger'>You cannot talk in deadchat (muted).</span>")
 			return
 

code/modules/mob/say_vr.dm

@@ -36,7 +36,7 @@ proc/get_top_level_mob(var/mob/S)
 	if(jobban_isbanned(user, "emote"))
 		to_chat(user, "You cannot send subtle emotes (banned).")
 		return FALSE
-	else if(user.client && user.client.prefs.muted & MUTE_IC)
+	else if(user.client && user.client?.prefs?.muted & MUTE_IC)
 		to_chat(user, "You cannot send IC messages (muted).")
 		return FALSE
 	else if(!params)
@@ -69,7 +69,7 @@ proc/get_top_level_mob(var/mob/S)
 		if(!M.client || isnewplayer(M))
 			continue
 		var/T = get_turf(src)
-		if(M.stat == DEAD && M.client && (M.client.prefs.chat_toggles & CHAT_GHOSTSIGHT) && !(M in viewers(T, null)))
+		if(M.stat == DEAD && M.client && (M.client?.prefs?.chat_toggles & CHAT_GHOSTSIGHT) && !(M in viewers(T, null)))
 			M.show_message(message)
 
 	if(emote_type == EMOTE_AUDIBLE)
@@ -100,7 +100,7 @@ proc/get_top_level_mob(var/mob/S)
 	if(jobban_isbanned(user, "emote"))
 		to_chat(user, "You cannot send subtle emotes (banned).")
 		return FALSE
-	else if(user.client && user.client.prefs.muted & MUTE_IC)
+	else if(user.client && user.client?.prefs?.muted & MUTE_IC)
 		to_chat(user, "You cannot send IC messages (muted).")
 		return FALSE
 	else if(!params)