Merge pull request #7354 from Neerti/status_indicators

Implements Status Indicators

code/__defines/_planes+layers.dm

@@ -138,6 +138,8 @@ What is the naming convention for planes or layers?
 
 #define PLANE_MESONS			30 //Stuff seen with mesons, like open ceilings. This is 30 for downstreams.
 
+#define PLANE_STATUS			31 //Status Indicators that show over mobs' heads when certain things like stuns affect them.
+
 #define PLANE_ADMIN2			33 //Purely for shenanigans (above lighting)
 
 #define PLANE_BUILDMODE			39 //Things that only show up when you have buildmode on

code/__defines/mobs.dm

@@ -398,7 +398,9 @@
 
 #define VIS_CLOAKED			23
 
-#define VIS_COUNT			23 //Must be highest number from above.
+#define VIS_STATUS			24
+
+#define VIS_COUNT			24 //Must be highest number from above.
 
 //Some mob icon layering defines
 #define BODY_LAYER		-100

code/game/atoms_movable.dm

@@ -19,6 +19,8 @@
 	var/icon_scale_x = 1 // Used to scale icons up or down horizonally in update_transform().
 	var/icon_scale_y = 1 // Used to scale icons up or down vertically in update_transform().
 	var/icon_rotation = 0 // Used to rotate icons in update_transform()
+	var/icon_expected_height = 32
+	var/icon_expected_width = 32
 	var/old_x = 0
 	var/old_y = 0
 	var/datum/riding/riding_datum = null
@@ -549,6 +551,14 @@
 		return null
 	return text2num(pickweight(candidates))
 
+// Returns the current scaling of the sprite.
+// Note this DOES NOT measure the height or width of the icon, but returns what number is being multiplied with to scale the icons, if any.
+/atom/movable/proc/get_icon_scale_x()
+	return icon_scale_x
+
+/atom/movable/proc/get_icon_scale_y()
+	return icon_scale_y
+
 /atom/movable/proc/update_transform()
 	var/matrix/M = matrix()
 	M.Scale(icon_scale_x, icon_scale_y)

code/game/gamemodes/technomancer/spells/audible_deception.dm

@@ -83,7 +83,7 @@
 			for(var/mob/living/carbon/M in ohearers(6, T))
 				if(M.get_ear_protection() >= 2)
 					continue
-				M.sleeping = 0
+				M.SetSleeping(0)
 				M.stuttering += 20
 				M.ear_deaf += 30
 				M.Weaken(3)

code/game/machinery/cryo.dm

@@ -235,7 +235,7 @@
 		occupant.set_stat(UNCONSCIOUS)
 		occupant.dir = SOUTH
 		if(occupant.bodytemperature < T0C)
-			occupant.sleeping = max(5, (1/occupant.bodytemperature)*2000)
+			occupant.Sleeping(max(5, (1/occupant.bodytemperature)*2000))
 			occupant.Paralyse(max(5, (1/occupant.bodytemperature)*3000))
 			if(air_contents.gas["oxygen"] > 2)
 				if(occupant.getOxyLoss()) occupant.adjustOxyLoss(-1)

code/game/machinery/jukebox.dm

@@ -146,7 +146,7 @@ datum/track/New(var/title_name, var/audio)
 			for(var/mob/living/carbon/M in ohearers(6, src))
 				if(M.get_ear_protection() >= 2)
 					continue
-				M.sleeping = 0
+				M.SetSleeping(0)
 				M.stuttering += 20
 				M.ear_deaf += 30
 				M.Weaken(3)

code/game/mecha/equipment/weapons/honk.dm

@@ -26,7 +26,7 @@
 				return
 		to_chat(M, "<span class='warning'>Your ears feel like they're bleeding!</span>")
 		playsound(M, 'sound/effects/bang.ogg', 70, 1, 30)
-		M.sleeping = 0
+		M.SetSleeping(0)
 		M.ear_deaf += 30
 		M.ear_damage += rand(5, 20)
 		M.Weaken(3)

code/game/objects/items/devices/megaphone.dm

@@ -138,7 +138,7 @@
 				for(var/mob/living/carbon/M in oviewers(4, T))
 					if(M.get_ear_protection() >= 2)
 						continue
-					M.sleeping = 0
+					M.SetSleeping(0)
 					M.stuttering += 20
 					M.ear_deaf += 30
 					M.Weaken(3)

code/modules/admin/admin.dm

@@ -1465,12 +1465,12 @@ proc/admin_notice(var/message, var/rights)
 
 	if(check_rights(R_ADMIN|R_MOD|R_EVENT))
 		if (H.paralysis == 0)
-			H.paralysis = 8000
+			H.SetParalysis(8000)
 			msg = "has paralyzed [key_name(H)]."
 			log_and_message_admins(msg)
 		else
 			if(alert(src, "[key_name(H)] is paralyzed, would you like to unparalyze them?",,"Yes","No") == "Yes")
-				H.paralysis = 0
+				H.SetParalysis(0)
 				msg = "has unparalyzed [key_name(H)]."
 				log_and_message_admins(msg)
 

code/modules/client/preference_setup/global/setting_datums.dm

@@ -229,6 +229,18 @@ var/list/_client_preferences_by_type
 	enabled_description =  "Enabled"
 	disabled_description = "Disabled"
 
+/datum/client_preference/status_indicators
+	description = "Status Indicators"
+	key = "SHOW_STATUS"
+	enabled_description = "Show"
+	disabled_description = "Hide"
+
+/datum/client_preference/status_indicators/toggled(mob/preference_mob, enabled)
+	. = ..()
+	if(preference_mob && preference_mob.plane_holder)
+		var/datum/plane_holder/PH = preference_mob.plane_holder
+		PH.set_vis(VIS_STATUS, enabled)
+
 /********************
 * Staff Preferences *
 ********************/

code/modules/client/preferences_toggle_procs.dm

@@ -319,6 +319,19 @@
 		You will have to reload VChat and/or reconnect to the server for these changes to take place. \
 		VChat message persistence is not guaranteed if you change this again before the start of the next round.")
 
+/client/verb/toggle_status_indicators()
+	set name = "Toggle Status Indicators"
+	set category = "Preferences"
+	set desc = "Enable/Disable seeing status indicators over peoples' heads."
+
+	var/pref_path = /datum/client_preference/status_indicators
+	toggle_preference(pref_path)
+	SScharacter_setup.queue_preferences_save(prefs)
+
+	to_chat(src, "You will now [(is_preference_enabled(/datum/client_preference/status_indicators)) ? "see" : "not see"] status indicators.")
+
+	feedback_add_details("admin_verb","TStatusIndicators")
+
 
 // Not attached to a pref datum because those are strict binary toggles
 /client/verb/toggle_examine_mode()

code/modules/flufftext/Hallucination.dm

@@ -168,12 +168,12 @@ mob/living/carbon/proc/handle_hallucinations()
 			if(71 to 72)
 				//Fake death
 //				src.sleeping_willingly = 1
-				src.sleeping = 20
+				SetSleeping(20)
 				hal_crit = 1
 				hal_screwyhud = 1
 				spawn(rand(50,100))
 //					src.sleeping_willingly = 0
-					src.sleeping = 0
+					SetSleeping(0)
 					hal_crit = 0
 					hal_screwyhud = 0
 	handling_hal = 0

code/modules/mob/living/bot/bot.dm

@@ -68,9 +68,9 @@
 	if(health <= 0)
 		death()
 		return
-	weakened = 0
-	stunned = 0
-	paralysis = 0
+	SetWeakened(0)
+	SetStunned(0)
+	SetParalysis(0)
 
 	if(on && !client && !busy)
 		spawn(0)

code/modules/mob/living/carbon/alien/life.dm

@@ -59,7 +59,7 @@
 			adjustHalLoss(-3)
 			if (mind)
 				if(mind.active && client != null)
-					sleeping = max(sleeping-1, 0)
+					AdjustSleeping(-1)
 			blinded = 1
 			set_stat(UNCONSCIOUS)
 		else if(resting)

code/modules/mob/living/carbon/brain/login.dm

@@ -1,3 +1,3 @@
 /mob/living/carbon/brain/Login()
 	..()
-	sleeping = 0
+	SetSleeping(0)

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

@@ -136,7 +136,7 @@
 				to_chat(src, "<span class='danger'>Oh god, everything's spinning!</span>")
 			Confuse(max(0,confuse_dur))
 		if(species.emp_sensitivity & EMP_WEAKEN)
-			if(weaken_dur >= 1) 
+			if(weaken_dur >= 1)
 				to_chat(src, "<span class='danger'>Your limbs go slack!</span>")
 			Weaken(max(0,weaken_dur))
 		//physical damage block, deals (minor-4) 5-15, 10-20, 15-25, 20-30 (extreme-1) of *each* type
@@ -287,7 +287,7 @@
 				M.visible_message("<span class='notice'>[M] shakes [src] trying to wake [T.him] up!</span>", \
 				"<span class='notice'>You shake [src], but [T.he] [T.does] not respond... Maybe [T.he] [T.has] S.S.D?</span>")
 			else if(lying || src.sleeping)
-				src.sleeping = max(0,src.sleeping-5)
+				AdjustSleeping(-5)
 				if(src.sleeping == 0)
 					src.resting = 0
 				M.visible_message("<span class='notice'>[M] shakes [src] trying to wake [T.him] up!</span>", \
@@ -401,7 +401,7 @@
 		to_chat(usr, "<font color='red'>You are already sleeping</font>")
 		return
 	if(alert(src,"You sure you want to sleep for a while?","Sleep","Yes","No") == "Yes")
-		usr.sleeping = 20 //Short nap
+		usr.AdjustSleeping(20)
 
 /mob/living/carbon/Bump(atom/A)
 	if(now_pushing)

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

@@ -237,7 +237,7 @@
 			message = "faints."
 			if(src.sleeping)
 				return //Can't faint while asleep
-			src.sleeping += 10 //Short-short nap
+			Sleeping(10)
 			m_type = 1
 
 		if("cough", "coughs")

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

@@ -1083,7 +1083,7 @@
 			drowsyness = max(0, drowsyness - 1)
 			eye_blurry = max(2, eye_blurry)
 			if (prob(5))
-				sleeping += 1
+				Sleeping(1)
 				Paralyse(5)
 
 		// If you're dirty, your gloves will become dirty, too.
@@ -1230,14 +1230,14 @@
 		if(blinded)
 			overlay_fullscreen("blind", /obj/screen/fullscreen/blind)
 			throw_alert("blind", /obj/screen/alert/blind)
-		
+
 		else
 			clear_fullscreens()
 			clear_alert("blind")
 
 		if(blinded)
 			overlay_fullscreen("blind", /obj/screen/fullscreen/blind)
-		
+
 		else if(!machine)
 			clear_fullscreens()
 

code/modules/mob/living/life.dm

@@ -122,7 +122,7 @@
 
 /mob/living/proc/handle_weakened()
 	if(weakened)
-		weakened = max(weakened-1,0)
+		AdjustWeakened(-1)
 	return weakened
 
 /mob/living/proc/handle_stuttering()
@@ -165,7 +165,7 @@
 		throw_alert("blind", /obj/screen/alert/blind)
 	else
 		clear_alert("blind")
-	
+
 	if(eye_blurry)			//blurry eyes heal slowly
 		eye_blurry = max(eye_blurry-1, 0)
 

code/modules/mob/living/living.dm

@@ -442,6 +442,15 @@ default behaviour is:
 		if(!isnull(M.disable_duration_percent))
 			amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(stunned > 0)
+		add_status_indicator("stunned")
+
+/mob/living/SetStunned(amount)
+	..()
+	if(stunned <= 0)
+		remove_status_indicator("stunned")
+	else
+		add_status_indicator("stunned")
 
 /mob/living/AdjustStunned(amount)
 	if(amount > 0)
@@ -449,12 +458,25 @@ default behaviour is:
 			if(!isnull(M.disable_duration_percent))
 				amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(stunned <= 0)
+		remove_status_indicator("stunned")
+	else
+		add_status_indicator("stunned")
 
 /mob/living/Weaken(amount)
 	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.disable_duration_percent))
 			amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(weakened > 0)
+		add_status_indicator("weakened")
+
+/mob/living/SetWeakened(amount)
+	..()
+	if(weakened <= 0)
+		remove_status_indicator("weakened")
+	else
+		add_status_indicator("weakened")
 
 /mob/living/AdjustWeakened(amount)
 	if(amount > 0)
@@ -462,12 +484,25 @@ default behaviour is:
 			if(!isnull(M.disable_duration_percent))
 				amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(weakened <= 0)
+		remove_status_indicator("weakened")
+	else
+		add_status_indicator("weakened")
 
 /mob/living/Paralyse(amount)
 	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.disable_duration_percent))
 			amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(paralysis > 0)
+		add_status_indicator("paralysis")
+
+/mob/living/SetParalysis(amount)
+	..()
+	if(paralysis <= 0)
+		remove_status_indicator("paralysis")
+	else
+		add_status_indicator("paralysis")
 
 /mob/living/AdjustParalysis(amount)
 	if(amount > 0)
@@ -475,12 +510,25 @@ default behaviour is:
 			if(!isnull(M.disable_duration_percent))
 				amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(paralysis <= 0)
+		remove_status_indicator("paralysis")
+	else
+		add_status_indicator("paralysis")
 
 /mob/living/Sleeping(amount)
 	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.disable_duration_percent))
 			amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(sleeping > 0)
+		add_status_indicator("sleeping")
+
+/mob/living/SetSleeping(amount)
+	..()
+	if(sleeping <= 0)
+		remove_status_indicator("sleeping")
+	else
+		add_status_indicator("sleeping")
 
 /mob/living/AdjustSleeping(amount)
 	if(amount > 0)
@@ -488,12 +536,25 @@ default behaviour is:
 			if(!isnull(M.disable_duration_percent))
 				amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(sleeping <= 0)
+		remove_status_indicator("sleeping")
+	else
+		add_status_indicator("sleeping")
 
 /mob/living/Confuse(amount)
 	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.disable_duration_percent))
 			amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(confused > 0)
+		add_status_indicator("confused")
+
+/mob/living/SetConfused(amount)
+	..()
+	if(confused <= 0)
+		remove_status_indicator("confused")
+	else
+		add_status_indicator("confused")
 
 /mob/living/AdjustConfused(amount)
 	if(amount > 0)
@@ -501,12 +562,25 @@ default behaviour is:
 			if(!isnull(M.disable_duration_percent))
 				amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(confused <= 0)
+		remove_status_indicator("confused")
+	else
+		add_status_indicator("confused")
 
 /mob/living/Blind(amount)
 	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.disable_duration_percent))
 			amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(eye_blind > 0)
+		add_status_indicator("blinded")
+
+/mob/living/SetBlinded(amount)
+	..()
+	if(eye_blind <= 0)
+		remove_status_indicator("blinded")
+	else
+		add_status_indicator("blinded")
 
 /mob/living/AdjustBlinded(amount)
 	if(amount > 0)
@@ -514,6 +588,10 @@ default behaviour is:
 			if(!isnull(M.disable_duration_percent))
 				amount = round(amount * M.disable_duration_percent)
 	..(amount)
+	if(eye_blind <= 0)
+		remove_status_indicator("blinded")
+	else
+		add_status_indicator("blinded")
 
 // ++++ROCKDTBEN++++ MOB PROCS //END
 
@@ -775,10 +853,10 @@ default behaviour is:
 
 	if(pulling) // we were pulling a thing and didn't lose it during our move.
 		var/pull_dir = get_dir(src, pulling)
-		
+
 		if(pulling.anchored || !isturf(pulling.loc))
 			stop_pulling()
-			
+
 		else if(get_dist(src, pulling) > 1 || (moving_diagonally != SECOND_DIAG_STEP && ((pull_dir - 1) & pull_dir))) // puller and pullee more than one tile away or in diagonal position
 			// If it is too far away or across z-levels from old location, stop pulling.
 			if(get_dist(pulling.loc, oldloc) > 1 || pulling.loc.z != oldloc?.z)
@@ -794,7 +872,7 @@ default behaviour is:
 				stop_pulling()
 
 	if(!isturf(loc))
-		return	
+		return
 	else if(lastarea?.has_gravity == 0)
 		inertial_drift()
 	else if(!isspace(loc))
@@ -806,7 +884,7 @@ default behaviour is:
 		if(Process_Spacemove(1))
 			inertia_dir = 0
 			return
-		
+
 		var/locthen = loc
 		spawn(5)
 			if(!anchored && !pulledby && loc == locthen)
@@ -1073,21 +1151,29 @@ default behaviour is:
 /mob/living/proc/is_sentient()
 	return TRUE
 
-/mob/living/update_transform()
-	// First, get the correct size.
-	var/desired_scale_x = icon_scale_x
-	var/desired_scale_y = icon_scale_y
+/mob/living/get_icon_scale_x()
+	. = ..()
 	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.icon_scale_x_percent))
-			desired_scale_x *= M.icon_scale_x_percent
+			. *= M.icon_scale_x_percent
+
+/mob/living/get_icon_scale_y()
+	. = ..()
+	for(var/datum/modifier/M in modifiers)
 		if(!isnull(M.icon_scale_y_percent))
-			desired_scale_y *= M.icon_scale_y_percent
+			. *= M.icon_scale_y_percent
+
+/mob/living/update_transform()
+	// First, get the correct size.
+	var/desired_scale_x = get_icon_scale_x()
+	var/desired_scale_y = get_icon_scale_y()
 
 	// Now for the regular stuff.
 	var/matrix/M = matrix()
 	M.Scale(desired_scale_x, desired_scale_y)
 	M.Translate(0, 16*(desired_scale_y-1))
 	animate(src, transform = M, time = 10)
+	handle_status_indicators()
 
 // This handles setting the client's color variable, which makes everything look a specific color.
 // This proc is here so it can be called without needing to check if the client exists, or if the client relogs.

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

@@ -1,3 +1,3 @@
 /mob/living/silicon/Login()
-	sleeping = 0
+	SetSleeping(0)
 	..()

code/modules/mob/living/silicon/robot/life.dm

@@ -32,7 +32,7 @@
 //	SetStunned(min(stunned, 30))
 	SetParalysis(min(paralysis, 30))
 //	SetWeakened(min(weakened, 20))
-	sleeping = 0
+	SetSleeping(0)
 	adjustBruteLoss(0)
 	adjustToxLoss(0)
 	adjustOxyLoss(0)
@@ -78,7 +78,7 @@
 
 	if(src.sleeping)
 		Paralyse(3)
-		src.sleeping--
+		AdjustSleeping(-1)
 
 	if(src.resting)
 		Weaken(5)

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

@@ -115,25 +115,7 @@
 
 /mob/living/silicon/apply_effect(var/effect = 0,var/effecttype = STUN, var/blocked = 0)
 	return 0//The only effect that can hit them atm is flashes and they still directly edit so this works for now
-/*
-	if(!effect || (blocked >= 2))	return 0
-	switch(effecttype)
-		if(STUN)
-			stunned = max(stunned,(effect/(blocked+1)))
-		if(WEAKEN)
-			weakened = max(weakened,(effect/(blocked+1)))
-		if(PARALYZE)
-			paralysis = max(paralysis,(effect/(blocked+1)))
-		if(IRRADIATE)
-			radiation += min((effect - (effect*getarmor(null, "rad"))), 0)//Rads auto check armor
-		if(STUTTER)
-			stuttering = max(stuttering,(effect/(blocked+1)))
-		if(EYE_BLUR)
-			eye_blurry = max(eye_blurry,(effect/(blocked+1)))
-		if(DROWSY)
-			drowsyness = max(drowsyness,(effect/(blocked+1)))
-	updatehealth()
-	return 1*/
+
 
 /proc/islinked(var/mob/living/silicon/robot/bot, var/mob/living/silicon/ai/ai)
 	if(!istype(bot) || !istype(ai))

code/modules/mob/living/simple_mob/subtypes/animal/space/alien.dm

@@ -64,6 +64,8 @@
 
 	pixel_x = -16
 	old_x = -16
+	icon_expected_width = 64
+	icon_expected_height = 64
 	meat_amount = 5
 
 /mob/living/simple_mob/animal/space/alien/queen
@@ -95,6 +97,8 @@
 
 	pixel_x = -16
 	old_x = -16
+	icon_expected_width = 64
+	icon_expected_height = 64
 
 /mob/living/simple_mob/animal/space/alien/queen/empress/mother
 	name = "alien mother"
@@ -111,6 +115,8 @@
 
 	pixel_x = -32
 	old_x = -32
+	icon_expected_width = 96
+	icon_expected_height = 96
 
 /mob/living/simple_mob/animal/space/alien/death()
 	..()

code/modules/mob/living/simple_mob/subtypes/animal/space/carp.dm

@@ -87,6 +87,8 @@
 
 	pixel_x = -16
 	default_pixel_x = -16
+	icon_expected_width = 64
+	icon_expected_height = 32
 
 	meat_amount = 3
 
@@ -108,6 +110,8 @@
 
 	pixel_y = -16
 	default_pixel_y = -16
+	icon_expected_width = 64
+	icon_expected_height = 64
 
 	meat_amount = 10
 

code/modules/mob/living/simple_mob/subtypes/occult/constructs/juggernaut.dm

@@ -45,7 +45,7 @@
 				"rad" = 100)
 
 /mob/living/simple_mob/construct/juggernaut/Life()
-	weakened = 0
+	SetWeakened(0)
 	..()
 
 /mob/living/simple_mob/construct/juggernaut/bullet_act(var/obj/item/projectile/P)

code/modules/mob/living/status_indicators.dm

@@ -0,0 +1,88 @@
+#define STATUS_INDICATOR_Y_OFFSET 2 // Offset from the edge of the icon sprite, so 32 pixels plus whatever number is here.
+#define STATUS_INDICATOR_ICON_X_SIZE 16 // Don't need to care about the Y size due to the origin being on the bottom side.
+#define STATUS_INDICATOR_ICON_MARGIN 2 // The space between two status indicators.
+
+// 'Status indicators' are icons that display over a mob's head, that visually indicate that the mob is suffering
+// from some kind of effect, such as being stunned, blinded, confused, asleep, etc.
+// The icons are managed automatically by the mob itself, so that their positions will shift if another indicator is added,
+// and it will try to always be above the mob sprite, even for larger sprites like xenos.
+
+/mob/living
+	var/list/status_indicators = null // Will become a list as needed.
+
+// Adds an icon_state, or image overlay, to the list of indicators to be managed automatically.
+// Also initializes the list if one doesn't exist.
+/mob/living/proc/add_status_indicator(image/thing)
+	if(get_status_indicator(thing)) // No duplicates, please.
+		return
+
+	if(!istype(thing, /image))
+		thing = image(icon = 'icons/mob/status_indicators.dmi', icon_state = thing)
+
+	LAZYADD(status_indicators, thing)
+	handle_status_indicators()
+
+// Similar to above but removes it instead, and nulls the list if it becomes empty as a result.
+/mob/living/proc/remove_status_indicator(image/thing)
+	thing = get_status_indicator(thing)
+
+	cut_overlay(thing)
+	LAZYREMOVE(status_indicators, thing)
+	handle_status_indicators()
+
+/mob/living/proc/get_status_indicator(image/thing)
+	if(!istype(thing, /image))
+		for(var/image/I in status_indicators)
+			if(I.icon_state == thing)
+				return I
+	return LAZYACCESS(status_indicators, LAZYFIND(status_indicators, thing))
+
+// Refreshes the indicators over a mob's head. Should only be called when adding or removing a status indicator with the above procs,
+// or when the mob changes size visually for some reason.
+/mob/living/proc/handle_status_indicators()
+	// First, get rid of all the overlays.
+	for(var/thing in status_indicators)
+		cut_overlay(thing)
+
+	if(!LAZYLEN(status_indicators))
+		return
+
+	if(stat == DEAD)
+		return
+
+	// Now put them back on in the right spot.
+	var/our_sprite_x = icon_expected_width * get_icon_scale_x()
+	var/our_sprite_y = icon_expected_height * get_icon_scale_y()
+
+	var/x_offset = our_sprite_x // Add your own offset here later if you want.
+	var/y_offset = our_sprite_y + STATUS_INDICATOR_Y_OFFSET
+
+	// Calculates how 'long' the row of indicators and the margin between them should be.
+	// The goal is to have the center of that row be horizontally aligned with the sprite's center.
+	var/expected_status_indicator_length = (STATUS_INDICATOR_ICON_X_SIZE * status_indicators.len) + (STATUS_INDICATOR_ICON_MARGIN * max(status_indicators.len - 1, 0))
+	var/current_x_position = (x_offset / 2) - (expected_status_indicator_length / 2)
+
+	// In /mob/living's `update_transform()`, the sprite is horizontally shifted when scaled up, so that the center of the sprite doesn't move to the right.
+	// Because of that, this adjustment needs to happen with the future indicator row as well, or it will look bad.
+	current_x_position -= (icon_expected_width / 2) * (get_icon_scale_y() - 1)
+
+	// Now the indicator row can actually be built.
+	for(var/thing in status_indicators)
+		var/image/I = thing
+
+		// This is a semi-HUD element, in a similar manner as medHUDs, in that they're 'above' everything else in the world,
+		// but don't pierce obfuscation layers such as blindness or darkness, unlike actual HUD elements like inventory slots.
+		I.plane = PLANE_STATUS
+		I.layer = HUD_LAYER
+		I.appearance_flags = PIXEL_SCALE|TILE_BOUND|NO_CLIENT_COLOR|RESET_COLOR|RESET_ALPHA|RESET_TRANSFORM|KEEP_APART
+		I.pixel_y = y_offset
+		I.pixel_x = current_x_position
+		add_overlay(I)
+		// Adding the margin space every time saves a conditional check on the last iteration,
+		// and it won't cause any issues since no more icons will be added, and the var is not used for anything else.
+		current_x_position += STATUS_INDICATOR_ICON_X_SIZE + STATUS_INDICATOR_ICON_MARGIN
+
+
+#undef STATUS_INDICATOR_Y_OFFSET
+#undef STATUS_INDICATOR_ICON_X_SIZE
+#undef STATUS_INDICATOR_ICON_MARGIN

code/modules/mob/login.dm

@@ -65,6 +65,10 @@
 	plane_holder.set_ao(VIS_OBJS, ao_enabled)
 	plane_holder.set_ao(VIS_MOBS, ao_enabled)
 
+	// Status indicators
+	var/status_enabled = client.is_preference_enabled(/datum/client_preference/status_indicators)
+	plane_holder.set_vis(VIS_STATUS, status_enabled)
+
 	//set macro to normal incase it was overriden (like cyborg currently does)
 	client.set_hotkeys_macro("macro", "hotkeymode")
 

code/modules/mob/mob_planes.dm

@@ -29,6 +29,8 @@
 	plane_masters[VIS_CH_SPECIAL] 	= new /obj/screen/plane_master{plane = PLANE_CH_SPECIAL}		//"Special" role stuff
 	plane_masters[VIS_CH_STATUS_OOC]= new /obj/screen/plane_master{plane = PLANE_CH_STATUS_OOC}		//OOC status HUD
 
+	plane_masters[VIS_STATUS]		= new /obj/screen/plane_master{plane = PLANE_STATUS}			//Status indicators that show over mob heads.
+
 	plane_masters[VIS_ADMIN1] 		= new /obj/screen/plane_master{plane = PLANE_ADMIN1}			//For admin use
 	plane_masters[VIS_ADMIN2] 		= new /obj/screen/plane_master{plane = PLANE_ADMIN2}			//For admin use
 	plane_masters[VIS_ADMIN3] 		= new /obj/screen/plane_master{plane = PLANE_ADMIN3}			//For admin use

code/modules/organs/pain.dm

@@ -42,7 +42,7 @@ mob/living/carbon/human/proc/handle_pain()
 			maxdam = dam
 	if(damaged_organ && chem_effects[CE_PAINKILLER] < maxdam)
 		if(maxdam > 10 && paralysis)
-			paralysis = max(0, paralysis - round(maxdam/10))
+			AdjustParalysis(-round(maxdam/10))
 		if(maxdam > 50 && prob(maxdam / 5))
 			drop_item()
 		var/burning = damaged_organ.burn_dam > damaged_organ.brute_dam

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Dispenser.dm

@@ -122,8 +122,8 @@
 	if(effective_dose >= strength * 6) // Toxic dose
 		M.add_chemical_effect(CE_ALCOHOL_TOXIC, toxicity*3)
 	if(effective_dose >= strength * 7) // Pass out
-		M.paralysis = max(M.paralysis, 60)
-		M.sleeping  = max(M.sleeping, 90)
+		M.Paralyse(60)
+		M.Sleeping(90)
 
 	if(druggy != 0)
 		M.druggy = max(M.druggy, druggy*3)
@@ -166,8 +166,8 @@
 	if(dose * strength_mod >= strength * 6) // Toxic dose
 		M.add_chemical_effect(CE_ALCOHOL_TOXIC, toxicity)
 	if(dose * strength_mod >= strength * 7) // Pass out
-		M.paralysis = max(M.paralysis, 20)
-		M.sleeping  = max(M.sleeping, 30)
+		M.Paralyse(20)
+		M.Sleeping(30)
 
 	if(druggy != 0)
 		M.druggy = max(M.druggy, druggy)
@@ -465,7 +465,7 @@
 				M.Weaken(2)
 			M.drowsyness = max(M.drowsyness, 20)
 		else
-			M.sleeping = max(M.sleeping, 20)
+			M.Sleeping(20)
 			M.drowsyness = max(M.drowsyness, 60)
 
 /datum/reagent/sulfur

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Food-Drinks.dm

@@ -321,7 +321,7 @@
 				M.Weaken(2)
 			M.drowsyness = max(M.drowsyness, 20)
 		else
-			M.sleeping = max(M.sleeping, 20)
+			M.Sleeping(20)
 			M.drowsyness = max(M.drowsyness, 60)
 
 /datum/reagent/nutriment/mayo
@@ -823,7 +823,7 @@
 	M.adjust_nutrition(nutrition * removed)
 	M.dizziness = max(0, M.dizziness + adj_dizzy)
 	M.drowsyness = max(0, M.drowsyness + adj_drowsy)
-	M.sleeping = max(0, M.sleeping + adj_sleepy)
+	M.AdjustSleeping(adj_sleepy)
 	if(adj_temp > 0 && M.bodytemperature < 310) // 310 is the normal bodytemp. 310.055
 		M.bodytemperature = min(310, M.bodytemperature + (adj_temp * TEMPERATURE_DAMAGE_COEFFICIENT))
 	if(adj_temp < 0 && M.bodytemperature > 310)
@@ -908,7 +908,7 @@
 				M.Weaken(2)
 			M.drowsyness = max(M.drowsyness, 20)
 		else
-			M.sleeping = max(M.sleeping, 20)
+			M.Sleeping(20)
 			M.drowsyness = max(M.drowsyness, 60)
 
 /datum/reagent/drink/juice/lemon
@@ -1491,7 +1491,7 @@
 				M.Weaken(2)
 			M.drowsyness = max(M.drowsyness, 20)
 		else
-			M.sleeping = max(M.sleeping, 20)
+			M.Sleeping(20)
 			M.drowsyness = max(M.drowsyness, 60)
 
 /datum/reagent/drink/milkshake/chocoshake
@@ -2153,7 +2153,7 @@
 	..()
 	M.dizziness = max(0, M.dizziness - 5)
 	M.drowsyness = max(0, M.drowsyness - 3)
-	M.sleeping = max(0, M.sleeping - 2)
+	M.AdjustSleeping(-2)
 	if(M.bodytemperature > 310)
 		M.bodytemperature = max(310, M.bodytemperature - (5 * TEMPERATURE_DAMAGE_COEFFICIENT))
 	if(alien == IS_TAJARA)

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Other.dm

@@ -197,7 +197,7 @@
 	M.drowsyness = 0
 	M.stuttering = 0
 	M.SetConfused(0)
-	M.sleeping = 0
+	M.SetSleeping(0)
 	M.jitteriness = 0
 	M.radiation = 0
 	M.ExtinguishMob()

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Toxins.dm

@@ -170,7 +170,7 @@
 /datum/reagent/toxin/cyanide/affect_blood(var/mob/living/carbon/M, var/alien, var/removed)
 	..()
 	M.adjustOxyLoss(20 * removed)
-	M.sleeping += 1
+	M.Sleeping(1)
 
 /datum/reagent/toxin/mold
 	name = "Mold"
@@ -645,7 +645,7 @@
 			else
 				M.Weaken(2)
 		else
-			M.sleeping = max(M.sleeping, 20)
+			M.Sleeping(20)
 		M.drowsyness = max(M.drowsyness, 60)
 
 /datum/reagent/chloralhydrate
@@ -689,7 +689,7 @@
 			M.Weaken(30)
 			M.Confuse(40)
 		else
-			M.sleeping = max(M.sleeping, 30)
+			M.Sleeping(30)
 
 	if(effective_dose > 1 * threshold)
 		M.adjustToxLoss(removed)

code/modules/virus2/effect.dm

@@ -404,7 +404,7 @@
 	stage = 2
 
 /datum/disease2/effect/blind/activate(var/mob/living/carbon/mob,var/multiplier)
-	mob.eye_blind = max(mob.eye_blind, 4)
+	mob.SetBlinded(4)
 
 /datum/disease2/effect/cough
 	name = "Severe Cough"

code/modules/xenoarcheaology/finds/special.dm

@@ -194,7 +194,7 @@
 			'sound/hallucinations/turn_around1.ogg',\
 			'sound/hallucinations/turn_around2.ogg',\
 			), 50, 1, -3)
-			M.sleeping = max(M.sleeping,rand(5,10))
+			M.Sleeping(rand(5, 10))
 			src.loc = null
 	else
 		STOP_PROCESSING(SSobj, src)

code/modules/xenoarcheaology/tools/suspension_generator.dm

@@ -21,7 +21,7 @@
 
 		var/turf/T = get_turf(suspension_field)
 		for(var/mob/living/M in T)
-			M.weakened = max(M.weakened, 3)
+			M.Weaken(3)
 			cell.charge -= power_use
 			if(prob(5))
 				to_chat(M, "<span class='warning'>[pick("You feel tingly","You feel like floating","It is hard to speak","You can barely move")].</span>")
@@ -208,7 +208,7 @@
 
 	for(var/mob/living/M in T)
 		to_chat(M, "<span class='info'>You no longer feel like floating.</span>")
-		M.weakened = min(M.weakened, 3)
+		M.Weaken(3)
 
 	src.visible_message("<font color='blue'>[bicon(src)] [src] deactivates with a gentle shudder.</font>")
 	qdel(suspension_field)

polaris.dme

@@ -2064,6 +2064,7 @@
 #include "code\modules\mob\living\login.dm"
 #include "code\modules\mob\living\logout.dm"
 #include "code\modules\mob\living\say.dm"
+#include "code\modules\mob\living\status_indicators.dm"
 #include "code\modules\mob\living\bot\bot.dm"
 #include "code\modules\mob\living\bot\cleanbot.dm"
 #include "code\modules\mob\living\bot\ed209bot.dm"