Merge pull request #12229 from Arturlang/TGUI-3.0

[READY]TGUI 3.0

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

@@ -54,6 +54,7 @@ GLOBAL_VAR_INIT(observer_default_invisibility, INVISIBILITY_OBSERVER)
 	// Used for displaying in ghost chat, without changing the actual name
 	// of the mob
 	var/deadchat_name
+	var/datum/orbit_menu/orbit_menu
 	var/datum/spawners_menu/spawners_menu
 
 /mob/dead/observer/Initialize(mapload, mob/body)
@@ -161,6 +162,7 @@ GLOBAL_VAR_INIT(observer_default_invisibility, INVISIBILITY_OBSERVER)
 
 	updateallghostimages()
 
+	QDEL_NULL(orbit_menu)
 	QDEL_NULL(spawners_menu)
 	return ..()
 
@@ -490,10 +492,10 @@ This is the proc mobs get to turn into a ghost. Forked from ghostize due to comp
 	set name = "Orbit" // "Haunt"
 	set desc = "Follow and orbit a mob."
 
-	var/list/mobs = getpois(skip_mindless=1)
-	var/input = input("Please, select a mob!", "Haunt", null, null) as null|anything in mobs
-	var/mob/target = mobs[input]
-	ManualFollow(target)
+	if(!orbit_menu)
+		orbit_menu = new(src)
+
+	orbit_menu.ui_interact(src)
 
 // This is the ghost's follow verb with an argument
 /mob/dead/observer/proc/ManualFollow(atom/movable/target)