Actually makes it work by /obj/screen --> /atom/movable/screen

code/_onclick/hud/action_button.dm

@@ -235,7 +235,7 @@
 
 	return "WEST[coord_col]:[coord_col_offset],NORTH[coord_row]:-6"
 
-/datum/hud/proc/SetButtonCoords(obj/screen/button,number, supportedcolumns)
+/datum/hud/proc/SetButtonCoords(atom/movable/screen/button,number, supportedcolumns)
 	var/row = round((number-1)/supportedcolumns)
 	var/col = ((number - 1)%(supportedcolumns)) + 1
 	var/x_offset = 32*(col-1) + 4 + 2*col

code/_onclick/hud/alert.dm

@@ -69,7 +69,7 @@
 		thealert.timeout = world.time + thealert.timeout - world.tick_lag
 	return thealert
 
-/mob/proc/alert_timeout(obj/screen/alert/alert, category)
+/mob/proc/alert_timeout(atom/movable/screen/alert/alert, category)
 	if(alert.timeout && alerts[category] == alert && world.time >= alert.timeout)
 		clear_alert(category)
 

code/_onclick/hud/fullscreen.dm

@@ -31,7 +31,7 @@
 			client.screen -= screen
 		qdel(screen)
 
-/mob/proc/clear_fullscreen_after_animate(obj/screen/fullscreen/screen)
+/mob/proc/clear_fullscreen_after_animate(atom/movable/screen/fullscreen/screen)
 	if(client)
 		client.screen -= screen
 	qdel(screen)

code/_onclick/hud/map_popups.dm

@@ -46,7 +46,7 @@
  * Registers screen obj with the client, which makes it visible on the
  * assigned map, and becomes a part of the assigned map's lifecycle.
  */
-/client/proc/register_map_obj(obj/screen/screen_obj)
+/client/proc/register_map_obj(atom/movable/screen/screen_obj)
 	if(!screen_obj.assigned_map)
 		CRASH("Can't register [screen_obj] without 'assigned_map' property.")
 	if(!screen_maps[screen_obj.assigned_map])

code/_onclick/hud/picture_in_picture.dm

@@ -26,7 +26,7 @@
 	QDEL_NULL(button_expand)
 	return ..()
 
-/atom/movable/screen/movable/pic_in_pic/component_click(obj/screen/component_button/component, params)
+/atom/movable/screen/movable/pic_in_pic/component_click(atom/movable/screen/component_button/component, params)
 	if(component == button_x)
 		qdel(src)
 	else if(component == button_expand)

code/_onclick/hud/radial.dm

@@ -159,7 +159,7 @@ GLOBAL_LIST_EMPTY(radial_menus)
 		else
 			SetElement(E,page_choices[i],angle,anim = anim,anim_order = i)
 
-/datum/radial_menu/proc/HideElement(obj/screen/radial/slice/E)
+/datum/radial_menu/proc/HideElement(atom/movable/screen/radial/slice/E)
 	E.cut_overlays()
 	E.alpha = 0
 	E.name = "None"
@@ -168,7 +168,7 @@ GLOBAL_LIST_EMPTY(radial_menus)
 	E.choice = null
 	E.next_page = FALSE
 
-/datum/radial_menu/proc/SetElement(obj/screen/radial/slice/E,choice_id,angle,anim,anim_order)
+/datum/radial_menu/proc/SetElement(atom/movable/screen/radial/slice/E,choice_id,angle,anim,anim_order)
 	//Position
 	var/py = round(cos(angle) * radius) + py_shift
 	var/px = round(sin(angle) * radius)

code/_onclick/hud/screen_objects.dm

@@ -11,7 +11,6 @@
 	icon = 'icons/mob/screen_gen.dmi'
 	layer = HUD_LAYER
 	plane = HUD_PLANE
-	resistance_flags = INDESTRUCTIBLE | LAVA_PROOF | FIRE_PROOF | UNACIDABLE | ACID_PROOF
 	animate_movement = SLIDE_STEPS
 	speech_span = SPAN_ROBOT
 	vis_flags = VIS_INHERIT_PLANE
@@ -34,9 +33,6 @@
 	 */
 	var/del_on_map_removal = TRUE
 
-/atom/movable/screen/take_damage()
-	return
-
 /atom/movable/screen/Destroy()
 	master = null
 	hud = null
@@ -48,7 +44,7 @@
 /atom/movable/screen/orbit()
 	return
 
-/atom/movable/screen/proc/component_click(obj/screen/component_button/component, params)
+/atom/movable/screen/proc/component_click(atom/movable/screen/component_button/component, params)
 	return
 
 /atom/movable/screen/text
@@ -695,7 +691,7 @@
 /atom/movable/screen/component_button
 	var/atom/movable/screen/parent
 
-/atom/movable/screen/component_button/Initialize(mapload, obj/screen/parent)
+/atom/movable/screen/component_button/Initialize(mapload, atom/movable/screen/parent)
 	. = ..()
 	src.parent = parent