/obj/screen --> /atom/movable/screen

code/modules/mob/living/living.dm

@@ -548,7 +548,7 @@
 	var/severity = 0
 	var/healthpercent = (health/maxHealth) * 100
 	if(hud_used?.healthdoll) //to really put you in the boots of a simplemob
-		var/obj/screen/healthdoll/living/livingdoll = hud_used.healthdoll
+		var/atom/movable/screen/healthdoll/living/livingdoll = hud_used.healthdoll
 		switch(healthpercent)
 			if(100 to INFINITY)
 				livingdoll.icon_state = "living0"
@@ -579,7 +579,7 @@
 			UNLINT(livingdoll.filters += filter(type="alpha", icon = mob_mask))
 			livingdoll.filters += filter(type="drop_shadow", size = -1)
 	if(severity > 0)
-		overlay_fullscreen("brute", /obj/screen/fullscreen/brute, severity)
+		overlay_fullscreen("brute", /atom/movable/screen/fullscreen/brute, severity)
 	else
 		clear_fullscreen("brute")
 
@@ -869,11 +869,11 @@
 			clear_alert("gravity")
 		else
 			if(has_gravity >= GRAVITY_DAMAGE_TRESHOLD)
-				throw_alert("gravity", /obj/screen/alert/veryhighgravity)
+				throw_alert("gravity", /atom/movable/screen/alert/veryhighgravity)
 			else
-				throw_alert("gravity", /obj/screen/alert/highgravity)
+				throw_alert("gravity", /atom/movable/screen/alert/highgravity)
 	else
-		throw_alert("gravity", /obj/screen/alert/weightless)
+		throw_alert("gravity", /atom/movable/screen/alert/weightless)
 	if(!override && !is_flying())
 		INVOKE_ASYNC(src, /atom/movable.proc/float, !has_gravity)
 
@@ -1159,7 +1159,7 @@
 		visible_message("<span class='warning'>[src] catches fire!</span>", \
 						"<span class='userdanger'>You're set on fire!</span>")
 		new/obj/effect/dummy/lighting_obj/moblight/fire(src)
-		throw_alert("fire", /obj/screen/alert/fire)
+		throw_alert("fire", /atom/movable/screen/alert/fire)
 		update_fire()
 		SEND_SIGNAL(src, COMSIG_LIVING_IGNITED,src)
 		return TRUE