Cherrypicks 3 (#382)

* Mobs burn to ashes on excessive heat damage (#26971)

* mobs burn to ashes on excessive heat damage

* remove comment, remove random lines I didn't mean to add

* combine code into behavior

* clean unused

* fix namespace

* drop next to

* fix spawn entities behavior spawning entities outside container

* fix burning to ash not working on all mobs (#27158)

* add ghostnado button to warp menu (#27556)

* add ghostnado button to warp menu

* translator ops

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

* Make arguments and parameters wrap to one variable per line (#27766)

* Fix ghosts getting spawned in nullspace (#27617)

* Add tests for ghost spawn position

* Make ghosts spawn immediately

* Format mind system

* Move ghost spawning to GhostSystem

* Spawn ghost on grid or map

This fixes the ghosts being attached the parent entity instead of the grid.

* Move logging out of the ghost system

* Make round start observer spawn using GhostSystem

* Move GameTicker ghost spawning to GhostSystem

Moved the more robust character name selection code over.
Moved the TimeOfDeath code over.
Added canReturn logic.

* Add overrides and default for ghost spawn coordinates

* Add warning log to ghost spawn fail

* Clean up test

* Dont spawn ghost on map delete

* Minor changes to the role test

* Fix role test failing to spawn ghost

It was failing the map check due to using Nullspace

* Fix ghost tests when running in parallel

Not sure what happened, but it seems to be because they were running simultaneously and overwriting values.

* Clean up ghost tests

* Test that map deletion does not spawn ghosts

* Spawn ghost on the next available map

* Disallow spawning on deleted maps

* Fix map deletion ghost test

* Cleanup

---------

Co-authored-by: Whisper <121047731+QuietlyWhisper@users.noreply.github.com>
Co-authored-by: deltanedas <39013340+deltanedas@users.noreply.github.com>
Co-authored-by: ShadowCommander <shadowjjt@gmail.com>

.editorconfig

@@ -336,7 +336,11 @@ dotnet_naming_symbols.type_parameters_symbols.applicable_kinds = type_parameter
 
 # ReSharper properties
 resharper_braces_for_ifelse = required_for_multiline
+resharper_csharp_wrap_arguments_style = chop_if_long
+resharper_csharp_wrap_parameters_style = chop_if_long
 resharper_keep_existing_attribute_arrangement = true
+resharper_wrap_chained_binary_patterns = chop_if_long
+resharper_wrap_chained_method_calls = chop_if_long
 
 [*.{csproj,xml,yml,yaml,dll.config,msbuildproj,targets,props}]
 indent_size = 2

Content.Client/UserInterface/Systems/Ghost/Controls/GhostTargetWindow.xaml

@@ -1,5 +1,6 @@
 <DefaultWindow xmlns="https://spacestation14.io" Title="{Loc 'ghost-target-window-title'}" MinSize="450 450" SetSize="450 450">
     <BoxContainer Orientation="Vertical" HorizontalExpand="True" SizeFlagsStretchRatio="0.4">
+        <Button Name="GhostnadoButton" Text="{Loc 'ghost-target-window-warp-to-most-followed'}" HorizontalAlignment="Center" Margin="0 4" />
         <LineEdit Name="SearchBar" PlaceHolder="Search" HorizontalExpand="True" Margin="0 4" />
         <ScrollContainer VerticalExpand="True" HorizontalExpand="True" HScrollEnabled="False">
             <BoxContainer Name="ButtonContainer" Orientation="Vertical" VerticalExpand="True" SeparationOverride="5">

Content.Client/UserInterface/Systems/Ghost/Controls/GhostTargetWindow.xaml.cs

@@ -15,11 +15,14 @@ namespace Content.Client.UserInterface.Systems.Ghost.Controls
         private string _searchText = string.Empty;
 
         public event Action<NetEntity>? WarpClicked;
+        public event Action? OnGhostnadoClicked;
 
         public GhostTargetWindow()
         {
             RobustXamlLoader.Load(this);
             SearchBar.OnTextChanged += OnSearchTextChanged;
+
+            GhostnadoButton.OnPressed += _ => OnGhostnadoClicked?.Invoke();
         }
 
         public void UpdateWarps(IEnumerable<GhostWarp> warps)

Content.Client/UserInterface/Systems/Ghost/GhostUIController.cs

@@ -111,6 +111,12 @@ public sealed class GhostUIController : UIController, IOnSystemChanged<GhostSyst
         _net.SendSystemNetworkMessage(msg);
     }
 
+    private void OnGhostnadoClicked()
+    {
+        var msg = new GhostnadoRequestEvent();
+        _net.SendSystemNetworkMessage(msg);
+    }
+
     public void LoadGui()
     {
         if (Gui == null)
@@ -121,7 +127,7 @@ public sealed class GhostUIController : UIController, IOnSystemChanged<GhostSyst
         Gui.GhostRolesPressed += GhostRolesPressed;
         Gui.TargetWindow.WarpClicked += OnWarpClicked;
         Gui.ReturnToRoundPressed += ReturnToRound;
-
+        Gui.TargetWindow.OnGhostnadoClicked += OnGhostnadoClicked;
 
         UpdateGui();
     }

Content.IntegrationTests/Tests/Minds/GhostRoleTests.cs

@@ -1,5 +1,6 @@
 #nullable enable
 using System.Linq;
+using Content.IntegrationTests.Pair;
 using Content.Server.Ghost.Roles;
 using Content.Server.Ghost.Roles.Components;
 using Content.Server.Players;
@@ -26,7 +27,7 @@ public sealed class GhostRoleTests
 ";
 
     /// <summary>
-    /// This is a simple test that just checks if a player can take a ghost roll and then regain control of their
+    /// This is a simple test that just checks if a player can take a ghost role and then regain control of their
     /// original entity without encountering errors.
     /// </summary>
     [Test]
@@ -34,12 +35,15 @@ public sealed class GhostRoleTests
     {
         await using var pair = await PoolManager.GetServerClient(new PoolSettings
         {
+            Dirty = true,
             DummyTicker = false,
             Connected = true
         });
         var server = pair.Server;
         var client = pair.Client;
 
+        var mapData = await pair.CreateTestMap();
+
         var entMan = server.ResolveDependency<IEntityManager>();
         var sPlayerMan = server.ResolveDependency<Robust.Server.Player.IPlayerManager>();
         var conHost = client.ResolveDependency<IConsoleHost>();
@@ -51,7 +55,7 @@ public sealed class GhostRoleTests
         EntityUid originalMob = default;
         await server.WaitPost(() =>
         {
-            originalMob = entMan.SpawnEntity(null, MapCoordinates.Nullspace);
+            originalMob = entMan.SpawnEntity(null, mapData.GridCoords);
             mindSystem.TransferTo(originalMindId, originalMob, true);
         });
 
@@ -69,12 +73,12 @@ public sealed class GhostRoleTests
         Assert.That(entMan.HasComponent<GhostComponent>(ghost));
         Assert.That(ghost, Is.Not.EqualTo(originalMob));
         Assert.That(session.ContentData()?.Mind, Is.EqualTo(originalMindId));
-        Assert.That(originalMind.OwnedEntity, Is.EqualTo(originalMob));
+        Assert.That(originalMind.OwnedEntity, Is.EqualTo(originalMob), $"Original mob: {originalMob}, Ghost: {ghost}");
         Assert.That(originalMind.VisitingEntity, Is.EqualTo(ghost));
 
         // Spawn ghost takeover entity.
         EntityUid ghostRole = default;
-        await server.WaitPost(() => ghostRole = entMan.SpawnEntity("GhostRoleTestEntity", MapCoordinates.Nullspace));
+        await server.WaitPost(() => ghostRole = entMan.SpawnEntity("GhostRoleTestEntity", mapData.GridCoords));
 
         // Take the ghost role
         await server.WaitPost(() =>

Content.IntegrationTests/Tests/Minds/GhostTests.cs

@@ -0,0 +1,159 @@
+using System.Numerics;
+using Content.IntegrationTests.Pair;
+using Content.Shared.Ghost;
+using Content.Shared.Mind;
+using Content.Shared.Players;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Player;
+using Robust.UnitTesting;
+
+namespace Content.IntegrationTests.Tests.Minds;
+
+[TestFixture]
+public sealed class GhostTests
+{
+    struct GhostTestData
+    {
+        public IEntityManager SEntMan;
+        public Robust.Server.Player.IPlayerManager SPlayerMan;
+        public Server.Mind.MindSystem SMindSys;
+        public SharedTransformSystem STransformSys = default!;
+
+        public TestPair Pair = default!;
+
+        public TestMapData MapData => Pair.TestMap!;
+
+        public RobustIntegrationTest.ServerIntegrationInstance Server => Pair.Server;
+        public RobustIntegrationTest.ClientIntegrationInstance Client => Pair.Client;
+
+        /// <summary>
+        /// Initial player coordinates. Note that this does not necessarily correspond to the position of the
+        /// <see cref="Player"/> entity.
+        /// </summary>
+        public NetCoordinates PlayerCoords = default!;
+
+        public NetEntity Player = default!;
+        public EntityUid SPlayerEnt = default!;
+
+        public ICommonSession ClientSession = default!;
+        public ICommonSession ServerSession = default!;
+
+        public GhostTestData()
+        {
+        }
+    }
+
+    private async Task<GhostTestData> SetupData()
+    {
+        var data = new GhostTestData();
+
+        // Client is needed to create a session for the ghost system. Creating a dummy session was too difficult.
+        data.Pair = await PoolManager.GetServerClient(new PoolSettings
+        {
+            DummyTicker = false,
+            Connected = true,
+            Dirty = true
+        });
+
+        data.SEntMan = data.Pair.Server.ResolveDependency<IServerEntityManager>();
+        data.SPlayerMan = data.Pair.Server.ResolveDependency<Robust.Server.Player.IPlayerManager>();
+        data.SMindSys = data.SEntMan.System<Server.Mind.MindSystem>();
+        data.STransformSys = data.SEntMan.System<SharedTransformSystem>();
+
+        // Setup map.
+        await data.Pair.CreateTestMap();
+        data.PlayerCoords = data.SEntMan.GetNetCoordinates(data.MapData.GridCoords.Offset(new Vector2(0.5f, 0.5f)).WithEntityId(data.MapData.MapUid, data.STransformSys, data.SEntMan));
+
+        if (data.Client.Session == null)
+            Assert.Fail("No player");
+        data.ClientSession = data.Client.Session!;
+        data.ServerSession = data.SPlayerMan.GetSessionById(data.ClientSession.UserId);
+
+        Entity<MindComponent> mind = default!;
+        await data.Pair.Server.WaitPost(() =>
+        {
+            data.Player = data.SEntMan.GetNetEntity(data.SEntMan.SpawnEntity(null, data.SEntMan.GetCoordinates(data.PlayerCoords)));
+            mind = data.SMindSys.CreateMind(data.ServerSession.UserId, "DummyPlayerEntity");
+            data.SPlayerEnt = data.SEntMan.GetEntity(data.Player);
+            data.SMindSys.TransferTo(mind, data.SPlayerEnt, mind: mind.Comp);
+            data.Server.PlayerMan.SetAttachedEntity(data.ServerSession, data.SPlayerEnt);
+        });
+
+        await data.Pair.RunTicksSync(5);
+
+        Assert.Multiple(() =>
+        {
+            Assert.That(data.ServerSession.ContentData()?.Mind, Is.EqualTo(mind.Owner));
+            Assert.That(data.ServerSession.AttachedEntity, Is.EqualTo(data.SPlayerEnt));
+            Assert.That(data.ServerSession.AttachedEntity, Is.EqualTo(mind.Comp.CurrentEntity),
+                "Player is not attached to the mind's current entity.");
+            Assert.That(data.SEntMan.EntityExists(mind.Comp.OwnedEntity),
+                "The mind's current entity does not exist");
+            Assert.That(mind.Comp.VisitingEntity == null || data.SEntMan.EntityExists(mind.Comp.VisitingEntity),
+                "The minds visited entity does not exist.");
+        });
+
+        Assert.That(data.SPlayerEnt, Is.Not.EqualTo(null));
+
+        return data;
+    }
+
+    /// <summary>
+    /// Test that a ghost gets created when the player entity is deleted.
+    /// 1. Delete mob
+    /// 2. Assert is ghost
+    /// </summary>
+    [Test]
+    public async Task TestGridGhostOnDelete()
+    {
+        var data = await SetupData();
+
+        var oldPosition = data.SEntMan.GetComponent<TransformComponent>(data.SPlayerEnt).Coordinates;
+
+        Assert.That(!data.SEntMan.HasComponent<GhostComponent>(data.SPlayerEnt), "Player was initially a ghost?");
+
+        // Delete entity
+        await data.Server.WaitPost(() => data.SEntMan.DeleteEntity(data.SPlayerEnt));
+        await data.Pair.RunTicksSync(5);
+
+        var ghost = data.ServerSession.AttachedEntity!.Value;
+        Assert.That(data.SEntMan.HasComponent<GhostComponent>(ghost), "Player did not become a ghost");
+
+        // Ensure the position is the same
+        var ghostPosition = data.SEntMan.GetComponent<TransformComponent>(ghost).Coordinates;
+        Assert.That(ghostPosition, Is.EqualTo(oldPosition));
+
+        await data.Pair.CleanReturnAsync();
+    }
+
+    /// <summary>
+    /// Test that a ghost gets created when the player entity is queue deleted.
+    /// 1. Delete mob
+    /// 2. Assert is ghost
+    /// </summary>
+    [Test]
+    public async Task TestGridGhostOnQueueDelete()
+    {
+        var data = await SetupData();
+
+        var oldPosition = data.SEntMan.GetComponent<TransformComponent>(data.SPlayerEnt).Coordinates;
+
+        Assert.That(!data.SEntMan.HasComponent<GhostComponent>(data.SPlayerEnt), "Player was initially a ghost?");
+
+        // Delete entity
+        await data.Server.WaitPost(() => data.SEntMan.QueueDeleteEntity(data.SPlayerEnt));
+        await data.Pair.RunTicksSync(5);
+
+        var ghost = data.ServerSession.AttachedEntity!.Value;
+        Assert.That(data.SEntMan.HasComponent<GhostComponent>(ghost), "Player did not become a ghost");
+
+        // Ensure the position is the same
+        var ghostPosition = data.SEntMan.GetComponent<TransformComponent>(ghost).Coordinates;
+        Assert.That(ghostPosition, Is.EqualTo(oldPosition));
+
+        await data.Pair.CleanReturnAsync();
+    }
+
+}

Content.IntegrationTests/Tests/Minds/MindTests.EntityDeletion.cs

@@ -1,3 +1,4 @@
+#nullable enable
 using System.Linq;
 using Content.Server.GameTicking;
 using Content.Shared.Ghost;
@@ -77,7 +78,7 @@ public sealed partial class MindTests
         await using var pair = await SetupPair(dirty: true);
         var server = pair.Server;
         var testMap = await pair.CreateTestMap();
-        var coordinates = testMap.GridCoords;
+        var testMap2 = await pair.CreateTestMap();
 
         var entMan = server.ResolveDependency<IServerEntityManager>();
         var mapManager = server.ResolveDependency<IMapManager>();
@@ -91,7 +92,7 @@ public sealed partial class MindTests
         MindComponent mind = default!;
         await server.WaitAssertion(() =>
         {
-            playerEnt = entMan.SpawnEntity(null, coordinates);
+            playerEnt = entMan.SpawnEntity(null, testMap.GridCoords);
             mindId = player.ContentData()!.Mind!.Value;
             mind = entMan.GetComponent<MindComponent>(mindId);
             mindSystem.TransferTo(mindId, playerEnt);
@@ -100,14 +101,20 @@ public sealed partial class MindTests
         });
 
         await pair.RunTicksSync(5);
-        await server.WaitPost(() => mapManager.DeleteMap(testMap.MapId));
+        await server.WaitAssertion(() => mapManager.DeleteMap(testMap.MapId));
         await pair.RunTicksSync(5);
 
         await server.WaitAssertion(() =>
         {
 #pragma warning disable NUnit2045 // Interdependent assertions.
-            Assert.That(entMan.EntityExists(mind.CurrentEntity), Is.True);
-            Assert.That(mind.CurrentEntity, Is.Not.EqualTo(playerEnt));
+            // Spawn ghost on the second map
+            var attachedEntity = player.AttachedEntity;
+            Assert.That(entMan.EntityExists(attachedEntity), Is.True);
+            Assert.That(attachedEntity, Is.Not.EqualTo(playerEnt));
+            Assert.That(entMan.HasComponent<GhostComponent>(attachedEntity));
+            var transform = entMan.GetComponent<TransformComponent>(attachedEntity.Value);
+            Assert.That(transform.MapID, Is.Not.EqualTo(MapId.Nullspace));
+            Assert.That(transform.MapID, Is.Not.EqualTo(testMap.MapId));
 #pragma warning restore NUnit2045
         });
 

Content.Server/Destructible/Thresholds/Behaviors/BurnBodyBehavior.cs

@@ -0,0 +1,32 @@
+using Content.Shared.Body.Components;
+using Content.Shared.Inventory;
+using Content.Shared.Popups;
+using JetBrains.Annotations;
+using Robust.Server.GameObjects;
+
+namespace Content.Server.Destructible.Thresholds.Behaviors;
+
+[UsedImplicitly]
+[DataDefinition]
+public sealed partial class BurnBodyBehavior : IThresholdBehavior
+{
+
+    public void Execute(EntityUid bodyId, DestructibleSystem system, EntityUid? cause = null)
+    {
+        var transformSystem = system.EntityManager.System<TransformSystem>();
+        var inventorySystem = system.EntityManager.System<InventorySystem>();
+        var sharedPopupSystem = system.EntityManager.System<SharedPopupSystem>();
+
+        if (system.EntityManager.TryGetComponent<InventoryComponent>(bodyId, out var comp))
+        {
+            foreach (var item in inventorySystem.GetHandOrInventoryEntities(bodyId))
+            {
+                transformSystem.DropNextTo(item, bodyId);
+            }
+        }
+
+        sharedPopupSystem.PopupCoordinates(Loc.GetString("bodyburn-text-others", ("name", bodyId)), transformSystem.GetMoverCoordinates(bodyId), PopupType.LargeCaution);
+
+        system.EntityManager.QueueDeleteEntity(bodyId);
+    }
+}

Content.Server/Destructible/Thresholds/Behaviors/SpawnEntitiesBehavior.cs

@@ -23,7 +23,10 @@ namespace Content.Server.Destructible.Thresholds.Behaviors
         public float Offset { get; set; } = 0.5f;
 
         [DataField("transferForensics")]
-        public bool DoTransferForensics = false;
+        public bool DoTransferForensics;
+
+        [DataField]
+        public bool SpawnInContainer;
 
         public void Execute(EntityUid owner, DestructibleSystem system, EntityUid? cause = null)
         {
@@ -49,7 +52,9 @@ namespace Content.Server.Destructible.Thresholds.Behaviors
 
                     if (EntityPrototypeHelpers.HasComponent<StackComponent>(entityId, system.PrototypeManager, system.ComponentFactory))
                     {
-                        var spawned = system.EntityManager.SpawnEntity(entityId, position.Offset(getRandomVector()));
+                        var spawned = SpawnInContainer
+                            ? system.EntityManager.SpawnNextToOrDrop(entityId, owner)
+                            : system.EntityManager.SpawnEntity(entityId, position.Offset(getRandomVector()));
                         system.StackSystem.SetCount(spawned, count);
 
                         TransferForensics(spawned, system, owner);
@@ -58,7 +63,9 @@ namespace Content.Server.Destructible.Thresholds.Behaviors
                     {
                         for (var i = 0; i < count; i++)
                         {
-                            var spawned = system.EntityManager.SpawnEntity(entityId, position.Offset(getRandomVector()));
+                            var spawned = SpawnInContainer
+                                ? system.EntityManager.SpawnNextToOrDrop(entityId, owner)
+                                : system.EntityManager.SpawnEntity(entityId, position.Offset(getRandomVector()));
 
                             TransferForensics(spawned, system, owner);
                         }

Content.Server/GameTicking/GameTicker.GamePreset.cs

@@ -283,40 +283,18 @@ namespace Content.Server.GameTicking
                 }
             }
 
-            var xformQuery = GetEntityQuery<TransformComponent>();
-            var coords = _transform.GetMoverCoordinates(position, xformQuery);
-
-            var ghost = Spawn(ObserverPrototypeName, coords);
-
-            // Try setting the ghost entity name to either the character name or the player name.
-            // If all else fails, it'll default to the default entity prototype name, "observer".
-            // However, that should rarely happen.
-            if (!string.IsNullOrWhiteSpace(mind.CharacterName))
-                _metaData.SetEntityName(ghost, mind.CharacterName);
-            else if (!string.IsNullOrWhiteSpace(mind.Session?.Name))
-                _metaData.SetEntityName(ghost, mind.Session.Name);
-
-            var ghostComponent = Comp<GhostComponent>(ghost);
-
-            if (mind.TimeOfDeath.HasValue)
-            {
-                _ghost.SetTimeOfDeath(ghost, mind.TimeOfDeath!.Value, ghostComponent);
-            }
+            var ghost = _ghost.SpawnGhost((mindId, mind), position, canReturn);
+            if (ghost == null)
+                return false;
 
             if (playerEntity != null)
                 _adminLogger.Add(LogType.Mind, $"{EntityManager.ToPrettyString(playerEntity.Value):player} ghosted{(!canReturn ? " (non-returnable)" : "")}");
 
-            _ghost.SetCanReturnToBody(ghostComponent, canReturn);
-
-            if (canReturn)
-                _mind.Visit(mindId, ghost, mind);
-            else
-                _mind.TransferTo(mindId, ghost, mind: mind);
-
             var player = mind.Session;
             var userId = player?.UserId;
             if (userId.HasValue && !_ghostSystem._deathTime.TryGetValue(userId.Value, out _))
                 _ghostSystem._deathTime[userId.Value] = _gameTiming.CurTime;
+            
             return true;
         }
 

Content.Server/GameTicking/GameTicker.Spawning.cs

@@ -9,6 +9,7 @@ using Content.Server.Speech.Components;
 using Content.Server.Station.Components;
 using Content.Shared.Chat;
 using Content.Shared.Database;
+using Content.Shared.Mind;
 using Content.Shared.Players;
 using Content.Shared.Mind;
 using Content.Shared.Preferences;
@@ -59,7 +60,9 @@ namespace Content.Server.GameTicking
             return spawnableStations;
         }
 
-        private void SpawnPlayers(List<ICommonSession> readyPlayers, Dictionary<NetUserId, HumanoidCharacterProfile> profiles, bool force)
+        private void SpawnPlayers(List<ICommonSession> readyPlayers,
+            Dictionary<NetUserId, HumanoidCharacterProfile> profiles,
+            bool force)
         {
             // Allow game rules to spawn players by themselves if needed. (For example, nuke ops or wizard)
             RaiseLocalEvent(new RulePlayerSpawningEvent(readyPlayers, profiles, force));
@@ -120,10 +123,17 @@ namespace Content.Server.GameTicking
             RefreshLateJoinAllowed();
 
             // Allow rules to add roles to players who have been spawned in. (For example, on-station traitors)
-            RaiseLocalEvent(new RulePlayerJobsAssignedEvent(assignedJobs.Keys.Select(x => _playerManager.GetSessionById(x)).ToArray(), profiles, force));
+            RaiseLocalEvent(new RulePlayerJobsAssignedEvent(
+                assignedJobs.Keys.Select(x => _playerManager.GetSessionById(x)).ToArray(),
+                profiles,
+                force));
         }
 
-        private void SpawnPlayer(ICommonSession player, EntityUid station, string? jobId = null, bool lateJoin = true, bool silent = false)
+        private void SpawnPlayer(ICommonSession player,
+            EntityUid station,
+            string? jobId = null,
+            bool lateJoin = true,
+            bool silent = false)
         {
             var character = GetPlayerProfile(player);
 
@@ -136,7 +146,12 @@ namespace Content.Server.GameTicking
             SpawnPlayer(player, character, station, jobId, lateJoin, silent);
         }
 
-        private void SpawnPlayer(ICommonSession player, HumanoidCharacterProfile character, EntityUid station, string? jobId = null, bool lateJoin = true, bool silent = false)
+        private void SpawnPlayer(ICommonSession player,
+            HumanoidCharacterProfile character,
+            EntityUid station,
+            string? jobId = null,
+            bool lateJoin = true,
+            bool silent = false)
         {
             // Can't spawn players with a dummy ticker!
             if (DummyTicker)
@@ -244,7 +259,9 @@ namespace Content.Server.GameTicking
                 restrictedRoles.UnionWith(jobBans);
 
             // Pick best job best on prefs.
-            jobId ??= _stationJobs.PickBestAvailableJobWithPriority(station, character.JobPriorities, true,
+            jobId ??= _stationJobs.PickBestAvailableJobWithPriority(station,
+                character.JobPriorities,
+                true,
                 restrictedRoles);
             // If no job available, stay in lobby, or if no lobby spawn as observer
             if (jobId is null)
@@ -253,7 +270,9 @@ namespace Content.Server.GameTicking
                 {
                     JoinAsObserver(player);
                 }
-                _chatManager.DispatchServerMessage(player, Loc.GetString("game-ticker-player-no-jobs-available-when-joining"));
+
+                _chatManager.DispatchServerMessage(player,
+                    Loc.GetString("game-ticker-player-no-jobs-available-when-joining"));
                 return;
             }
 
@@ -267,7 +286,7 @@ namespace Content.Server.GameTicking
             _mind.SetUserId(newMind, data.UserId);
 
             var jobPrototype = _prototypeManager.Index<JobPrototype>(jobId);
-            var job = new JobComponent { Prototype = jobId };
+            var job = new JobComponent {Prototype = jobId};
             _roles.MindAddRole(newMind, job, silent: silent);
             var jobName = _jobs.MindTryGetJobName(newMind);
 
@@ -311,12 +330,11 @@ namespace Content.Server.GameTicking
             if (lateJoin && !silent)
             {
                 _chatSystem.DispatchStationAnnouncement(station,
-                    Loc.GetString(
-                        "latejoin-arrival-announcement",
-                    ("character", MetaData(mob).EntityName),
+                    Loc.GetString("latejoin-arrival-announcement",
+                        ("character", MetaData(mob).EntityName),
                         ("gender", character.Gender), // WD-EDIT
-                        ("job", CultureInfo.CurrentCulture.TextInfo.ToTitleCase(jobName))
-                    ), Loc.GetString("latejoin-arrival-sender"),
+                        ("job", CultureInfo.CurrentCulture.TextInfo.ToTitleCase(jobName))),
+                    Loc.GetString("latejoin-arrival-sender"),
                     playDefaultSound: false);
             }
 
@@ -328,14 +346,17 @@ namespace Content.Server.GameTicking
             _stationJobs.TryAssignJob(station, jobPrototype, player.UserId);
 
             if (lateJoin)
-                _adminLogger.Add(LogType.LateJoin, LogImpact.Medium, $"Player {player.Name} late joined as {character.Name:characterName} on station {Name(station):stationName} with {ToPrettyString(mob):entity} as a {jobName:jobName}.");
+                _adminLogger.Add(LogType.LateJoin,
+                    LogImpact.Medium,
+                    $"Player {player.Name} late joined as {character.Name:characterName} on station {Name(station):stationName} with {ToPrettyString(mob):entity} as a {jobName:jobName}.");
             else
-                _adminLogger.Add(LogType.RoundStartJoin, LogImpact.Medium, $"Player {player.Name} joined as {character.Name:characterName} on station {Name(station):stationName} with {ToPrettyString(mob):entity} as a {jobName:jobName}.");
+                _adminLogger.Add(LogType.RoundStartJoin,
+                    LogImpact.Medium,
+                    $"Player {player.Name} joined as {character.Name:characterName} on station {Name(station):stationName} with {ToPrettyString(mob):entity} as a {jobName:jobName}.");
 
             // Make sure they're aware of extended access.
             if (Comp<StationJobsComponent>(station).ExtendedAccess
-                && (jobPrototype.ExtendedAccess.Count > 0
-                    || jobPrototype.ExtendedAccessGroups.Count > 0))
+                && (jobPrototype.ExtendedAccess.Count > 0 || jobPrototype.ExtendedAccessGroups.Count > 0))
             {
                 _chatManager.DispatchServerMessage(player, Loc.GetString("job-greet-crew-shortages"));
             }
@@ -357,14 +378,20 @@ namespace Content.Server.GameTicking
                 }
                 else
                 {
-                    _chatManager.DispatchServerMessage(player, Loc.GetString("latejoin-arrivals-direction-time",
-                        ("time", $"{arrival:mm\\:ss}")));
+                    _chatManager.DispatchServerMessage(player,
+                        Loc.GetString("latejoin-arrivals-direction-time", ("time", $"{arrival:mm\\:ss}")));
                 }
             }
 
             // We raise this event directed to the mob, but also broadcast it so game rules can do something now.
             PlayersJoinedRoundNormally++;
-            var aev = new PlayerSpawnCompleteEvent(mob, player, jobId, lateJoin, PlayersJoinedRoundNormally, station, character);
+            var aev = new PlayerSpawnCompleteEvent(mob,
+                player,
+                jobId,
+                lateJoin,
+                PlayersJoinedRoundNormally,
+                station,
+                character);
             RaiseLocalEvent(mob, aev, true);
         }
 
@@ -485,32 +512,24 @@ namespace Content.Server.GameTicking
             if (DummyTicker)
                 return;
 
-            var mind = player.GetMind();
+            Entity<MindComponent?>? mind = player.GetMind();
             if (mind == null)
             {
-                mind = _mind.CreateMind(player.UserId);
+                var name = GetPlayerProfile(player).Name;
+                var (mindId, mindComp) = _mind.CreateMind(player.UserId, name);
+                mind = (mindId, mindComp);
                 _mind.SetUserId(mind.Value, player.UserId);
                 _roles.MindAddRole(mind.Value, new ObserverRoleComponent());
             }
 
-            var name = GetPlayerProfile(player).Name;
-
-            var ghost = SpawnObserverMob();
-            _metaData.SetEntityName(ghost, name);
-            _ghost.SetCanReturnToBody(ghost, false);
-            _mind.TransferTo(mind.Value, ghost);
-            _adminLogger.Add(LogType.LateJoin, LogImpact.Low, $"{player.Name} late joined the round as an Observer with {ToPrettyString(ghost):entity}.");
+            var ghost = _ghost.SpawnGhost(mind.Value);
+            _adminLogger.Add(LogType.LateJoin,
+                LogImpact.Low,
+                $"{player.Name} late joined the round as an Observer with {ToPrettyString(ghost):entity}.");
         }
 
-        #region Mob Spawning Helpers
-        private EntityUid SpawnObserverMob()
-        {
-            var coordinates = GetObserverSpawnPoint();
-            return EntityManager.SpawnEntity(ObserverPrototypeName, coordinates);
-        }
-        #endregion
-
         #region Spawn Points
+
         public EntityCoordinates GetObserverSpawnPoint()
         {
             _possiblePositions.Clear();
@@ -531,8 +550,7 @@ namespace Content.Server.GameTicking
                 var query = AllEntityQuery<MapGridComponent>();
                 while (query.MoveNext(out var uid, out var grid))
                 {
-                    if (!metaQuery.TryGetComponent(uid, out var meta) ||
-                        meta.EntityPaused)
+                    if (!metaQuery.TryGetComponent(uid, out var meta) || meta.EntityPaused || TerminatingOrDeleted(uid))
                     {
                         continue;
                     }
@@ -553,8 +571,7 @@ namespace Content.Server.GameTicking
                 {
                     var gridXform = Transform(gridUid);
 
-                    return new EntityCoordinates(gridUid,
-                        gridXform.InvWorldMatrix.Transform(toMap.Position));
+                    return new EntityCoordinates(gridUid, gridXform.InvWorldMatrix.Transform(toMap.Position));
                 }
 
                 return spawn;
@@ -570,8 +587,9 @@ namespace Content.Server.GameTicking
             {
                 var mapUid = _mapManager.GetMapEntityId(map);
 
-                if (!metaQuery.TryGetComponent(mapUid, out var meta) ||
-                    meta.EntityPaused)
+                if (!metaQuery.TryGetComponent(mapUid, out var meta)
+                    || meta.EntityPaused
+                    || TerminatingOrDeleted(mapUid))
                 {
                     continue;
                 }
@@ -584,6 +602,7 @@ namespace Content.Server.GameTicking
             _sawmill.Warning("Found no observer spawn points!");
             return EntityCoordinates.Invalid;
         }
+
         #endregion
     }
 
@@ -601,7 +620,11 @@ namespace Content.Server.GameTicking
         public bool LateJoin { get; }
         public EntityUid Station { get; }
 
-        public PlayerBeforeSpawnEvent(ICommonSession player, HumanoidCharacterProfile profile, string? jobId, bool lateJoin, EntityUid station)
+        public PlayerBeforeSpawnEvent(ICommonSession player,
+            HumanoidCharacterProfile profile,
+            string? jobId,
+            bool lateJoin,
+            EntityUid station)
         {
             Player = player;
             Profile = profile;
@@ -629,7 +652,13 @@ namespace Content.Server.GameTicking
         // Ex. If this is the 27th person to join, this will be 27.
         public int JoinOrder { get; }
 
-        public PlayerSpawnCompleteEvent(EntityUid mob, ICommonSession player, string? jobId, bool lateJoin, int joinOrder, EntityUid station, HumanoidCharacterProfile profile)
+        public PlayerSpawnCompleteEvent(EntityUid mob,
+            ICommonSession player,
+            string? jobId,
+            bool lateJoin,
+            int joinOrder,
+            EntityUid station,
+            HumanoidCharacterProfile profile)
         {
             Mob = mob;
             Player = player;

Content.Server/Ghost/GhostSystem.cs

@@ -29,6 +29,7 @@ using Robust.Server.Player;
 using Content.Shared._White;
 using Robust.Shared.Configuration;
 using Robust.Shared.Network;
+using Robust.Shared.Map;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
@@ -55,11 +56,19 @@ namespace Content.Server.Ghost
         [Dependency] private readonly VisibilitySystem _visibilitySystem = default!;
         [Dependency] private readonly IChatManager _chatManager = default!;
         [Dependency] private readonly IAdminLogManager _adminLogger = default!;
+        [Dependency] private readonly MetaDataSystem _metaData = default!;
+        [Dependency] private readonly IMapManager _mapManager = default!;
+
+        private EntityQuery<GhostComponent> _ghostQuery;
+        private EntityQuery<PhysicsComponent> _physicsQuery;
 
         public override void Initialize()
         {
             base.Initialize();
 
+            _ghostQuery = GetEntityQuery<GhostComponent>();
+            _physicsQuery = GetEntityQuery<PhysicsComponent>();
+
             SubscribeLocalEvent<GhostComponent, ComponentStartup>(OnGhostStartup);
             SubscribeLocalEvent<GhostComponent, MapInitEvent>(OnMapInit);
             SubscribeLocalEvent<GhostComponent, ComponentShutdown>(OnGhostShutdown);
@@ -75,6 +84,7 @@ namespace Content.Server.Ghost
             SubscribeNetworkEvent<GhostWarpsRequestEvent>(OnGhostWarpsRequest);
             SubscribeNetworkEvent<GhostReturnToBodyRequest>(OnGhostReturnToBodyRequest);
             SubscribeNetworkEvent<GhostWarpToTargetRequestEvent>(OnGhostWarpToTargetRequest);
+            SubscribeNetworkEvent<GhostnadoRequestEvent>(OnGhostnadoRequest);
 
             SubscribeNetworkEvent<GhostReturnToRoundRequest>(OnGhostReturnToRoundRequest);
 
@@ -319,7 +329,7 @@ namespace Content.Server.Ghost
         private void OnGhostReturnToBodyRequest(GhostReturnToBodyRequest msg, EntitySessionEventArgs args)
         {
             if (args.SenderSession.AttachedEntity is not {Valid: true} attached
-                || !TryComp(attached, out GhostComponent? ghost)
+                || !_ghostQuery.TryComp(attached, out var ghost)
                 || !ghost.CanReturnToBody
                 || !TryComp(attached, out ActorComponent? actor))
             {
@@ -335,7 +345,7 @@ namespace Content.Server.Ghost
         private void OnGhostWarpsRequest(GhostWarpsRequestEvent msg, EntitySessionEventArgs args)
         {
             if (args.SenderSession.AttachedEntity is not {Valid: true} entity
-                || !HasComp<GhostComponent>(entity))
+                || !_ghostQuery.HasComp(entity))
             {
                 Log.Warning($"User {args.SenderSession.Name} sent a {nameof(GhostWarpsRequestEvent)} without being a ghost.");
                 return;
@@ -348,7 +358,7 @@ namespace Content.Server.Ghost
         private void OnGhostWarpToTargetRequest(GhostWarpToTargetRequestEvent msg, EntitySessionEventArgs args)
         {
             if (args.SenderSession.AttachedEntity is not {Valid: true} attached
-                || !TryComp(attached, out GhostComponent? _))
+                || !_ghostQuery.HasComp(attached))
             {
                 Log.Warning($"User {args.SenderSession.Name} tried to warp to {msg.Target} without being a ghost.");
                 return;
@@ -362,17 +372,37 @@ namespace Content.Server.Ghost
                 return;
             }
 
-            if ((TryComp(target, out WarpPointComponent? warp) && warp.Follow) || HasComp<MobStateComponent>(target))
+            WarpTo(attached, target);
+        }
+
+        private void OnGhostnadoRequest(GhostnadoRequestEvent msg, EntitySessionEventArgs args)
+        {
+            if (args.SenderSession.AttachedEntity is not {} uid
+                || !_ghostQuery.HasComp(uid))
             {
-                _followerSystem.StartFollowingEntity(attached, target);
+                Log.Warning($"User {args.SenderSession.Name} tried to ghostnado without being a ghost.");
                 return;
             }
 
-            var xform = Transform(attached);
-            _transformSystem.SetCoordinates(attached, xform, Transform(target).Coordinates);
-            _transformSystem.AttachToGridOrMap(attached, xform);
-            if (TryComp(attached, out PhysicsComponent? physics))
-                _physics.SetLinearVelocity(attached, Vector2.Zero, body: physics);
+            if (_followerSystem.GetMostFollowed() is not {} target)
+                return;
+
+            WarpTo(uid, target);
+        }
+
+        private void WarpTo(EntityUid uid, EntityUid target)
+        {
+            if ((TryComp(target, out WarpPointComponent? warp) && warp.Follow) || HasComp<MobStateComponent>(target))
+            {
+                _followerSystem.StartFollowingEntity(uid, target);
+                return;
+            }
+
+            var xform = Transform(uid);
+            _transformSystem.SetCoordinates(uid, xform, Transform(target).Coordinates);
+            _transformSystem.AttachToGridOrMap(uid, xform);
+            if (_physicsQuery.TryComp(uid, out var physics))
+                _physics.SetLinearVelocity(uid, Vector2.Zero, body: physics);
         }
 
         private IEnumerable<GhostWarp> GetLocationWarps()
@@ -444,5 +474,59 @@ namespace Content.Server.Ghost
 
             return ghostBoo.Handled;
         }
+
+        public EntityUid? SpawnGhost(Entity<MindComponent?> mind, EntityUid targetEntity,
+            bool canReturn = false)
+        {
+            _transformSystem.TryGetMapOrGridCoordinates(targetEntity, out var spawnPosition);
+            return SpawnGhost(mind, spawnPosition, canReturn);
+        }
+
+        public EntityUid? SpawnGhost(Entity<MindComponent?> mind, EntityCoordinates? spawnPosition = null,
+            bool canReturn = false)
+        {
+            if (!Resolve(mind, ref mind.Comp))
+                return null;
+
+            // Test if the map is being deleted
+            var mapUid = spawnPosition?.GetMapUid(EntityManager);
+            if (mapUid == null || TerminatingOrDeleted(mapUid.Value))
+                spawnPosition = null;
+
+            spawnPosition ??= _ticker.GetObserverSpawnPoint();
+
+            if (!spawnPosition.Value.IsValid(EntityManager))
+            {
+                Log.Warning($"No spawn valid ghost spawn position found for {mind.Comp.CharacterName}"
+                    + " \"{ToPrettyString(mind)}\"");
+                _minds.TransferTo(mind.Owner, null, createGhost: false, mind: mind.Comp);
+                return null;
+            }
+
+            var ghost = SpawnAtPosition(GameTicker.ObserverPrototypeName, spawnPosition.Value);
+            var ghostComponent = Comp<GhostComponent>(ghost);
+
+            // Try setting the ghost entity name to either the character name or the player name.
+            // If all else fails, it'll default to the default entity prototype name, "observer".
+            // However, that should rarely happen.
+            if (!string.IsNullOrWhiteSpace(mind.Comp.CharacterName))
+                _metaData.SetEntityName(ghost, mind.Comp.CharacterName);
+            else if (!string.IsNullOrWhiteSpace(mind.Comp.Session?.Name))
+                _metaData.SetEntityName(ghost, mind.Comp.Session.Name);
+
+            if (mind.Comp.TimeOfDeath.HasValue)
+            {
+                SetTimeOfDeath(ghost, mind.Comp.TimeOfDeath!.Value, ghostComponent);
+            }
+
+            SetCanReturnToBody(ghostComponent, canReturn);
+
+            if (canReturn)
+                _minds.Visit(mind.Owner, ghost, mind.Comp);
+            else
+                _minds.TransferTo(mind.Owner, ghost, mind: mind.Comp);
+            Log.Debug($"Spawned ghost \"{ToPrettyString(ghost)}\" for {mind.Comp.CharacterName}.");
+            return ghost;
+        }
     }
 }

Content.Server/Mind/MindSystem.cs

@@ -1,6 +1,7 @@
 using System.Diagnostics.CodeAnalysis;
 using Content.Server.Administration.Logs;
 using Content.Server.GameTicking;
+using Content.Server.Ghost;
 using Content.Server.Mind.Commands;
 using Content.Shared.Database;
 using Content.Shared.Ghost;
@@ -9,10 +10,8 @@ using Content.Shared.Mind.Components;
 using Content.Shared.Players;
 using Robust.Server.GameStates;
 using Robust.Server.Player;
-using Robust.Shared.Map.Components;
 using Robust.Shared.Network;
 using Robust.Shared.Player;
-using Robust.Shared.Timing;
 using Robust.Shared.Utility;
 
 namespace Content.Server.Mind;
@@ -22,8 +21,7 @@ public sealed class MindSystem : SharedMindSystem
     [Dependency] private readonly GameTicker _gameTicker = default!;
     [Dependency] private readonly IAdminLogManager _adminLogger = default!;
     [Dependency] private readonly IPlayerManager _players = default!;
-    [Dependency] private readonly MetaDataSystem _metaData = default!;
-    [Dependency] private readonly SharedGhostSystem _ghosts = default!;
+    [Dependency] private readonly GhostSystem _ghosts = default!;
     [Dependency] private readonly SharedTransformSystem _transform = default!;
     [Dependency] private readonly PvsOverrideSystem _pvsOverride = default!;
 
@@ -63,8 +61,8 @@ public sealed class MindSystem : SharedMindSystem
             && !Terminating(visiting))
         {
             TransferTo(mindId, visiting, mind: mind);
-            if (TryComp(visiting, out GhostComponent? ghost))
-                _ghosts.SetCanReturnToBody(ghost, false);
+            if (TryComp(visiting, out GhostComponent? ghostComp))
+                _ghosts.SetCanReturnToBody(ghostComp, false);
             return;
         }
 
@@ -74,40 +72,13 @@ public sealed class MindSystem : SharedMindSystem
         if (!component.GhostOnShutdown || mind.Session == null || _gameTicker.RunLevel == GameRunLevel.PreRoundLobby)
             return;
 
-        var xform = Transform(uid);
-        var gridId = xform.GridUid;
-        var spawnPosition = Transform(uid).Coordinates;
-
-        // Use a regular timer here because the entity has probably been deleted.
-        Timer.Spawn(0, () =>
-        {
-            // Make extra sure the round didn't end between spawning the timer and it being executed.
-            if (_gameTicker.RunLevel == GameRunLevel.PreRoundLobby)
-                return;
-
-            // Async this so that we don't throw if the grid we're on is being deleted.
-            if (!HasComp<MapGridComponent>(gridId))
-                spawnPosition = _gameTicker.GetObserverSpawnPoint();
-
-            // TODO refactor observer spawning.
-            // please.
-            if (!spawnPosition.IsValid(EntityManager))
-            {
-                // This should be an error, if it didn't cause tests to start erroring when they delete a player.
-                Log.Warning($"Entity \"{ToPrettyString(uid)}\" for {mind.CharacterName} was deleted, and no applicable spawn location is available.");
-                TransferTo(mindId, null, createGhost: false, mind: mind);
-                return;
-            }
-
-            var ghost = Spawn(GameTicker.ObserverPrototypeName, spawnPosition);
-            var ghostComponent = Comp<GhostComponent>(ghost);
-            _ghosts.SetCanReturnToBody(ghostComponent, false);
-
+        var ghost = _ghosts.SpawnGhost((mindId, mind), uid);
+        if (ghost != null)
             // Log these to make sure they're not causing the GameTicker round restart bugs...
             Log.Debug($"Entity \"{ToPrettyString(uid)}\" for {mind.CharacterName} was deleted, spawned \"{ToPrettyString(ghost)}\".");
-            _metaData.SetEntityName(ghost, mind.CharacterName ?? string.Empty);
-            TransferTo(mindId, ghost, mind: mind);
-        });
+        else
+            // This should be an error, if it didn't cause tests to start erroring when they delete a player.
+            Log.Warning($"Entity \"{ToPrettyString(uid)}\" for {mind.CharacterName} was deleted, and no applicable spawn location is available.");
     }
 
     public override bool TryGetMind(NetUserId user, [NotNullWhen(true)] out EntityUid? mindId, [NotNullWhen(true)] out MindComponent? mind)

Content.Shared/Follower/FollowerSystem.cs

@@ -266,6 +266,27 @@ public sealed class FollowerSystem : EntitySystem
             StopFollowingEntity(player, uid, followed);
         }
     }
+
+    /// <summary>
+    /// Get the most followed entity.
+    /// </summary>
+    public EntityUid? GetMostFollowed()
+    {
+        EntityUid? picked = null;
+        int most = 0;
+        var query = EntityQueryEnumerator<FollowedComponent>();
+        while (query.MoveNext(out var uid, out var comp))
+        {
+            var count = comp.Following.Count;
+            if (count > most)
+            {
+                picked = uid;
+                most = count;
+            }
+        }
+
+        return picked;
+    }
 }
 
 public abstract class FollowEvent : EntityEventArgs

Content.Shared/Ghost/SharedGhostSystem.cs

@@ -125,6 +125,12 @@ namespace Content.Shared.Ghost
         }
     }
 
+    /// <summary>
+    /// A client to server request for their ghost to be warped to the most followed entity.
+    /// </summary>
+    [Serializable, NetSerializable]
+    public sealed class GhostnadoRequestEvent : EntityEventArgs;
+
     /// <summary>
     /// A client to server request for their ghost to return to body
     /// </summary>

Resources/Locale/en-US/burning/bodyburn.ftl

@@ -0,0 +1 @@
+bodyburn-text-others = {$name} burns to ash!

Resources/Locale/en-US/ghost/ghost-gui.ftl

@@ -19,6 +19,7 @@ ghost-gui-toggle-hearing-popup-off = You can now only hear radio and nearby mess
 
 ghost-target-window-title = Ghost Warp
 ghost-target-window-current-button = Warp: {$name}
+ghost-target-window-warp-to-most-followed = Warp to Most Followed
 
 ghost-roles-window-title = Ghost Roles
 ghost-roles-window-request-role-button = Request

Resources/Prototypes/Entities/Mobs/base.yml

@@ -60,6 +60,21 @@
         damage: 400
       behaviors:
       - !type:GibBehavior { }
+    - trigger:
+        !type:DamageTypeTrigger
+        damageType: Heat
+        damage: 1500
+      behaviors:
+      - !type:SpawnEntitiesBehavior
+        spawnInContainer: true
+        spawn:
+          Ash:
+            min: 1
+            max: 1
+      - !type:BurnBodyBehavior { }
+      - !type:PlaySoundBehavior
+        sound:
+          collection: MeatLaserImpact
   - type: RadiationReceiver
   - type: Stamina
   - type: MobState