Ports https://github.com/tgstation/tgstation/pull/51585

code/modules/antagonists/_common/antag_datum.dm

@@ -23,6 +23,7 @@ GLOBAL_LIST_EMPTY(antagonists)
 	var/show_name_in_check_antagonists = FALSE //Will append antagonist name in admin listings - use for categories that share more than one antag type
 	var/list/blacklisted_quirks = list(/datum/quirk/nonviolent,/datum/quirk/mute) // Quirks that will be removed upon gaining this antag. Pacifist and mute are default.
 	var/threat = 0 // Amount of threat this antag poses, for dynamic mode
+	var/show_to_ghosts = FALSE // Should this antagonist be shown as antag to ghosts? Shouldn't be used for stealthy antagonists like traitors
 
 	var/list/skill_modifiers
 

code/modules/antagonists/abductor/abductor.dm

@@ -7,6 +7,7 @@
 	job_rank = ROLE_ABDUCTOR
 	show_in_antagpanel = FALSE //should only show subtypes
 	threat = 5
+	show_to_ghosts = TRUE
 	var/datum/team/abductor_team/team
 	var/sub_role
 	var/outfit
@@ -32,6 +33,10 @@
 	show_in_antagpanel = TRUE
 	skill_modifiers = list(/datum/skill_modifier/job/affinity/surgery)
 
+/datum/antagonist/abductor/scientist/onemanteam
+	name = "Abductor Solo"
+	outfit = /datum/outfit/abductor/scientist/onemanteam
+
 /datum/antagonist/abductor/create_team(datum/team/abductor_team/new_team)
 	if(!new_team)
 		return

code/modules/antagonists/blob/blob.dm

@@ -2,6 +2,7 @@
 	name = "Blob"
 	roundend_category = "blobs"
 	antagpanel_category = "Blob"
+	show_to_ghosts = TRUE
 	job_rank = ROLE_BLOB
 	threat = 20
 	var/datum/action/innate/blobpop/pop_action

code/modules/antagonists/devil/devil.dm

@@ -92,6 +92,7 @@ GLOBAL_LIST_INIT(devil_suffix, list(" the Red", " the Soulless", " the Master",
 	//Don't delete upon mind destruction, otherwise soul re-selling will break.
 	delete_on_mind_deletion = FALSE
 	threat = 5
+	show_to_ghosts = TRUE
 	var/obligation
 	var/ban
 	var/bane

code/modules/antagonists/disease/disease_datum.dm

@@ -2,6 +2,7 @@
 	name = "Sentient Disease"
 	roundend_category = "diseases"
 	antagpanel_category = "Disease"
+	show_to_ghosts = TRUE
 	var/disease_name = ""
 
 /datum/antagonist/disease/on_gain()

code/modules/antagonists/ert/ert.dm

@@ -12,6 +12,7 @@
 	var/list/name_source
 	threat = -5
 	show_in_antagpanel = FALSE
+	show_to_ghosts = TRUE
 	antag_moodlet = /datum/mood_event/focused
 
 /datum/antagonist/ert/on_gain()

code/modules/antagonists/monkey/monkey.dm

@@ -9,6 +9,7 @@
 	roundend_category = "monkeys"
 	antagpanel_category = "Monkey"
 	threat = 3
+	show_to_ghosts = TRUE
 	var/datum/team/monkey/monkey_team
 	var/monkey_only = TRUE
 

code/modules/antagonists/nightmare/nightmare.dm

@@ -3,3 +3,4 @@
 	show_in_antagpanel = FALSE
 	show_name_in_check_antagonists = TRUE
 	threat = 5
+	show_to_ghosts = TRUE

code/modules/antagonists/ninja/ninja.dm

@@ -3,6 +3,7 @@
 	antagpanel_category = "Ninja"
 	job_rank = ROLE_NINJA
 	show_name_in_check_antagonists = TRUE
+	show_to_ghosts = TRUE
 	antag_moodlet = /datum/mood_event/focused
 	threat = 8
 	var/helping_station = FALSE

code/modules/antagonists/nukeop/nukeop.dm

@@ -6,6 +6,7 @@
 	antag_moodlet = /datum/mood_event/focused
 	threat = 10
 	skill_modifiers = list(/datum/skill_modifier/job/level/wiring)
+	show_to_ghosts = TRUE
 	var/datum/team/nuclear/nuke_team
 	var/always_new_team = FALSE //If not assigned a team by default ops will try to join existing ones, set this to TRUE to always create new team.
 	var/send_to_spawnpoint = TRUE //Should the user be moved to default spawnpoint.

code/modules/antagonists/official/official.dm

@@ -4,6 +4,7 @@
 	show_in_antagpanel = FALSE
 	var/datum/objective/mission
 	var/datum/team/ert/ert_team
+	show_to_ghosts = TRUE
 
 /datum/antagonist/official/greet()
 	to_chat(owner, "<B><font size=3 color=red>You are a CentCom Official.</font></B>")

code/modules/antagonists/pirate/pirate.dm

@@ -4,6 +4,7 @@
 	roundend_category = "space pirates"
 	antagpanel_category = "Pirate"
 	threat = 5
+	show_to_ghosts = TRUE
 	var/datum/team/pirate/crew
 
 /datum/antagonist/pirate/greet()

code/modules/antagonists/revenant/revenant_antag.dm

@@ -3,6 +3,7 @@
 	show_in_antagpanel = FALSE
 	show_name_in_check_antagonists = TRUE
 	threat = 5
+	show_to_ghosts = TRUE
 
 /datum/antagonist/revenant/greet()
 	owner.announce_objectives()

code/modules/antagonists/santa/santa.dm

@@ -1,6 +1,8 @@
 /datum/antagonist/santa
 	name = "Santa"
 	show_in_antagpanel = FALSE
+	show_name_in_check_antagonists = TRUE
+	show_to_ghosts = TRUE
 
 /datum/antagonist/santa/on_gain()
 	. = ..()

code/modules/antagonists/slaughter/slaughter_antag.dm

@@ -6,6 +6,7 @@
 	threat = 10
 	job_rank = ROLE_ALIEN
 	show_in_antagpanel = FALSE
+	show_to_ghosts = TRUE
 
 /datum/antagonist/slaughter/on_gain()
 	forge_objectives()

code/modules/antagonists/wizard/wizard.dm

@@ -13,6 +13,7 @@
 	var/move_to_lair = TRUE
 	var/outfit_type = /datum/outfit/wizard
 	var/wiz_age = WIZARD_AGE_MIN /* Wizards by nature cannot be too young. */
+	show_to_ghosts = TRUE
 
 /datum/antagonist/wizard/on_gain()
 	register()

code/modules/antagonists/xeno/xeno.dm

@@ -12,6 +12,7 @@
 	name = "Xenomorph"
 	job_rank = ROLE_ALIEN
 	show_in_antagpanel = FALSE
+	show_to_ghosts = TRUE
 	var/datum/team/xeno/xeno_team
 	threat = 3
 

code/modules/asset_cache/asset_list_items.dm

@@ -369,9 +369,12 @@
 		"dna_extra.gif" 		= 'html/dna_extra.gif'
 	)
 
-/*
 /datum/asset/simple/orbit
 	assets = list(
 		"ghost.png"	= 'html/ghost.png'
 	)
+
+	assets = list(
+		"ghost.png"	= 'html/ghost.png'
+	)
 */

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)

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

@@ -0,0 +1,78 @@
+/datum/orbit_menu
+	var/mob/dead/observer/owner
+
+/datum/orbit_menu/New(mob/dead/observer/new_owner)
+	if(!istype(new_owner))
+		qdel(src)
+	owner = new_owner
+
+/datum/orbit_menu/ui_interact(mob/user, ui_key = "main", datum/tgui/ui = null, force_open = FALSE, datum/tgui/master_ui = null, datum/ui_state/state = GLOB.observer_state)
+	if (!ui)
+		ui = new(user, src, ui_key, "Orbit", "Orbit", 350, 700, master_ui, state)
+		ui.open()
+
+/datum/orbit_menu/ui_act(action, list/params, datum/tgui/ui, datum/ui_state/state)
+	if (..())
+		return
+
+	if (action == "orbit")
+		var/list/pois = getpois(skip_mindless = 1)
+		var/atom/movable/poi = pois[params["name"]]
+		if (poi != null)
+			owner.ManualFollow(poi)
+			ui.close()
+
+/datum/orbit_menu/ui_data(mob/user)
+	var/list/data = list()
+
+	var/list/alive = list()
+	var/list/antagonists = list()
+	var/list/dead = list()
+	var/list/ghosts = list()
+	var/list/misc = list()
+	var/list/npcs = list()
+
+	var/list/pois = getpois(skip_mindless = 1)
+	for (var/name in pois)
+		var/list/serialized = list()
+		serialized["name"] = name
+
+		var/poi = pois[name]
+
+		var/mob/M = poi
+		if (istype(M))
+			if (isobserver(M))
+				ghosts += list(serialized)
+			else if (M.stat == DEAD)
+				dead += list(serialized)
+			else if (M.mind == null)
+				npcs += list(serialized)
+			else
+				var/number_of_orbiters = M.orbiters?.orbiters?.len
+				if (number_of_orbiters)
+					serialized["orbiters"] = number_of_orbiters
+
+				var/datum/mind/mind = M.mind
+				var/was_antagonist = FALSE
+
+				for (var/_A in mind.antag_datums)
+					var/datum/antagonist/A = _A
+					if (A.show_to_ghosts)
+						was_antagonist = TRUE
+						serialized["antag"] = A.name
+						antagonists += list(serialized)
+						break
+
+				if (!was_antagonist)
+					alive += list(serialized)
+		else
+			misc += list(serialized)
+
+	data["alive"] = alive
+	data["antagonists"] = antagonists
+	data["dead"] = dead
+	data["ghosts"] = ghosts
+	data["misc"] = misc
+	data["npcs"] = npcs
+
+	return data

tgstation.dme

@@ -2319,6 +2319,8 @@
 #include "code\modules\mob\dead\observer\observer.dm"
 #include "code\modules\mob\dead\observer\observer_movement.dm"
 #include "code\modules\mob\dead\observer\say.dm"
+#include "code\modules\mob\dead\observer\observer_say.dm"
+#include "code\modules\mob\dead\observer\orbit.dm"
 #include "code\modules\mob\living\blood.dm"
 #include "code\modules\mob\living\bloodcrawl.dm"
 #include "code\modules\mob\living\damage_procs.dm"

tgui/packages/tgui/interfaces/Orbit.js

@@ -0,0 +1,188 @@
+import { createSearch } from 'common/string';
+import { Box, Button, Input, Section } from '../components';
+import { Window } from '../layouts';
+import { useBackend, useLocalState } from '../backend';
+
+const PATTERN_DESCRIPTOR = / \[(?:ghost|dead)\]$/;
+const PATTERN_NUMBER = / \(([0-9]+)\)$/;
+
+const searchFor = searchText => createSearch(searchText, thing => thing.name);
+
+const compareString = (a, b) => a < b ? -1 : a > b;
+
+const compareNumberedText = (a, b) => {
+  const aName = a.name;
+  const bName = b.name;
+
+  // Check if aName and bName are the same except for a number at the end
+  // e.g. Medibot (2) and Medibot (3)
+  const aNumberMatch = aName.match(PATTERN_NUMBER);
+  const bNumberMatch = bName.match(PATTERN_NUMBER);
+
+  if (aNumberMatch
+    && bNumberMatch
+    && aName.replace(PATTERN_NUMBER, "") === bName.replace(PATTERN_NUMBER, "")
+  ) {
+    const aNumber = parseInt(aNumberMatch[1], 10);
+    const bNumber = parseInt(bNumberMatch[1], 10);
+
+    return aNumber - bNumber;
+  }
+
+  return compareString(aName, bName);
+};
+
+const BasicSection = (props, context) => {
+  const { act } = useBackend(context);
+  const { searchText, source, title } = props;
+  const things = source.filter(searchFor(searchText));
+  things.sort(compareNumberedText);
+  return source.length > 0 && (
+    <Section title={title}>
+      {things.map(thing => (
+        <Button
+          key={thing.name}
+          content={thing.name.replace(PATTERN_DESCRIPTOR, "")}
+          onClick={() => act("orbit", {
+            name: thing.name,
+          })} />
+      ))}
+    </Section>
+  );
+};
+
+const OrbitedButton = (props, context) => {
+  const { act } = useBackend(context);
+  const { color, thing } = props;
+
+  return (
+    <Button
+      color={color}
+      onClick={() => act("orbit", {
+        name: thing.name,
+      })}>
+      {thing.name}
+      {thing.orbiters && (
+        <Box inline ml={1}>
+          {"("}{thing.orbiters}{" "}
+          <Box
+            as="img"
+            src="ghost.png"
+            opacity={0.7} />
+          {")"}
+        </Box>
+      )}
+    </Button>
+  );
+};
+
+export const Orbit = (props, context) => {
+  const { act, data } = useBackend(context);
+  const {
+    alive,
+    antagonists,
+    dead,
+    ghosts,
+    misc,
+    npcs,
+  } = data;
+
+  const [searchText, setSearchText] = useLocalState(context, "searchText", "");
+
+  const collatedAntagonists = {};
+  for (const antagonist of antagonists) {
+    if (collatedAntagonists[antagonist.antag] === undefined) {
+      collatedAntagonists[antagonist.antag] = [];
+    }
+    collatedAntagonists[antagonist.antag].push(antagonist);
+  }
+
+  const sortedAntagonists = Object.entries(collatedAntagonists);
+  sortedAntagonists.sort((a, b) => {
+    return compareString(a[0], b[0]);
+  });
+
+  const orbitMostRelevant = searchText => {
+    for (const source of [
+      sortedAntagonists.map(([_, antags]) => antags),
+      alive, ghosts, dead, npcs, misc,
+    ]) {
+      const member = source
+        .filter(searchFor(searchText))
+        .sort(compareNumberedText)[0];
+      if (member !== undefined) {
+        act("orbit", { name: member.name });
+        break;
+      }
+    }
+  };
+
+  return (
+    <Window>
+      <Window.Content>
+        <Section>
+          <Input
+            fluid
+            value={searchText}
+            onInput={(_, value) => setSearchText(value)}
+            onEnter={(_, value) => orbitMostRelevant(value)} />
+        </Section>
+
+        {antagonists.length > 0 && (
+          <Section title="Ghost-Visible Antagonists">
+            {sortedAntagonists.map(([name, antags]) => (
+              <Section key={name} title={name} level={2}>
+                {antags
+                  .filter(searchFor(searchText))
+                  .sort(compareNumberedText)
+                  .map(antag => (
+                    <OrbitedButton
+                      key={antag.name}
+                      color="bad"
+                      thing={antag}
+                    />
+                  ))}
+              </Section>
+            ))}
+          </Section>
+        )}
+
+        <Section title="Alive">
+          {alive
+            .filter(searchFor(searchText))
+            .sort(compareNumberedText)
+            .map(thing => (
+              <OrbitedButton
+                key={thing.name}
+                color="good"
+                thing={thing} />
+            ))}
+        </Section>
+
+        <BasicSection
+          title="Ghosts"
+          source={ghosts}
+          searchText={searchText}
+        />
+
+        <BasicSection
+          title="Dead"
+          source={dead}
+          searchText={searchText}
+        />
+
+        <BasicSection
+          title="NPCs"
+          source={npcs}
+          searchText={searchText}
+        />
+
+        <BasicSection
+          title="Misc"
+          source={misc}
+          searchText={searchText}
+        />
+      </Window.Content>
+    </Window>
+  );
+};