Paradox Clone (#35794)

* polymorph fixes

* paradox clone

* forensics cleanup

* bump doors

* 4

* attribution

* polymorphn't

* clean up objectives

* Update Resources/ServerInfo/Guidebook/Antagonist/MinorAntagonists.xml

* review

* add virtual items to blacklist

* allow them to roll sleeper agent

Content.Server/GameTicking/Rules/Components/ParadoxCloneRuleComponent.cs

@@ -0,0 +1,23 @@
+using Content.Shared.Cloning;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.GameTicking.Rules.Components;
+
+/// <summary>
+///     Gamerule component for spawning a paradox clone antagonist.
+/// </summary>
+[RegisterComponent]
+public sealed partial class ParadoxCloneRuleComponent : Component
+{
+    /// <summary>
+    ///     Cloning settings to be used.
+    /// </summary>
+    [DataField]
+    public ProtoId<CloningSettingsPrototype> Settings = "BaseClone";
+
+    /// <summary>
+    ///     Visual effect spawned when gibbing at round end.
+    /// </summary>
+    [DataField]
+    public EntProtoId GibProto = "MobParadoxTimed";
+}

Content.Server/GameTicking/Rules/ParadoxCloneRuleSystem.cs

@@ -0,0 +1,83 @@
+using Content.Server.Antag;
+using Content.Server.Cloning;
+using Content.Server.GameTicking.Rules.Components;
+using Content.Server.Objectives.Components;
+using Content.Shared.GameTicking.Components;
+using Content.Shared.Gibbing.Components;
+using Content.Shared.Mind;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Server.GameTicking.Rules;
+
+public sealed class ParadoxCloneRuleSystem : GameRuleSystem<ParadoxCloneRuleComponent>
+{
+    [Dependency] private readonly SharedTransformSystem _transform = default!;
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly SharedMindSystem _mind = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly CloningSystem _cloning = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<ParadoxCloneRuleComponent, AntagSelectEntityEvent>(OnAntagSelectEntity);
+    }
+
+    protected override void Started(EntityUid uid, ParadoxCloneRuleComponent component, GameRuleComponent gameRule, GameRuleStartedEvent args)
+    {
+        base.Started(uid, component, gameRule, args);
+
+        // check if we got enough potential cloning targets, otherwise cancel the gamerule so that the ghost role does not show up
+        var allHumans = _mind.GetAliveHumans();
+
+        if (allHumans.Count == 0)
+        {
+            Log.Info("Could not find any alive players to create a paradox clone from! Ending gamerule.");
+            ForceEndSelf(uid, gameRule);
+        }
+    }
+
+    // we have to do the spawning here so we can transfer the mind to the correct entity and can assign the objectives correctly
+    private void OnAntagSelectEntity(Entity<ParadoxCloneRuleComponent> ent, ref AntagSelectEntityEvent args)
+    {
+        if (args.Session?.AttachedEntity is not { } spawner)
+            return;
+
+        if (!_prototypeManager.TryIndex(ent.Comp.Settings, out var settings))
+        {
+            Log.Error($"Used invalid cloning settings {ent.Comp.Settings} for ParadoxCloneRule");
+            return;
+        }
+
+        // get possible targets
+        var allHumans = _mind.GetAliveHumans();
+
+        // we already checked when starting the gamerule, but someone might have died since then.
+        if (allHumans.Count == 0)
+        {
+            Log.Warning("Could not find any alive players to create a paradox clone from!");
+            return;
+        }
+
+        // pick a random player
+        var playerToClone = _random.Pick(allHumans);
+        var bodyToClone = playerToClone.Comp.OwnedEntity;
+
+        if (bodyToClone == null || !_cloning.TryCloning(bodyToClone.Value, _transform.GetMapCoordinates(spawner), settings, out var clone))
+        {
+            Log.Error($"Unable to make a paradox clone of entity {ToPrettyString(bodyToClone)}");
+            return;
+        }
+
+        var targetComp = EnsureComp<TargetOverrideComponent>(clone.Value);
+        targetComp.Target = playerToClone.Owner; // set the kill target
+
+        var gibComp = EnsureComp<GibOnRoundEndComponent>(clone.Value);
+        gibComp.SpawnProto = ent.Comp.GibProto;
+        gibComp.PreventGibbingObjectives = new() { "ParadoxCloneKillObjective" }; // don't gib them if they killed the original.
+
+        args.Entity = clone;
+    }
+}

Content.Server/Gibbing/Systems/GibOnRoundEndSystem.cs

@@ -0,0 +1,55 @@
+using Content.Shared.GameTicking;
+using Content.Shared.Gibbing.Components;
+using Content.Shared.Mind;
+using Content.Shared.Objectives.Systems;
+using Content.Server.Body.Systems;
+
+namespace Content.Server.Gibbing.Systems;
+public sealed class GibOnRoundEndSystem : EntitySystem
+{
+    [Dependency] private readonly BodySystem _body = default!;
+    [Dependency] private readonly SharedMindSystem _mind = default!;
+    [Dependency] private readonly SharedObjectivesSystem _objectives = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        // this is raised after RoundEndTextAppendEvent, so they can successfully greentext before we gib them
+        SubscribeLocalEvent<RoundEndMessageEvent>(OnRoundEnd);
+    }
+
+    private void OnRoundEnd(RoundEndMessageEvent args)
+    {
+        var gibQuery = EntityQueryEnumerator<GibOnRoundEndComponent>();
+
+        // gib everyone with the component
+        while (gibQuery.MoveNext(out var uid, out var gibComp))
+        {
+            var gib = false;
+            // if they fulfill all objectives given in the component they are not gibbed
+            if (_mind.TryGetMind(uid, out var mindId, out var mindComp))
+            {
+                foreach (var objectiveId in gibComp.PreventGibbingObjectives)
+                {
+                    if (!_mind.TryFindObjective((mindId, mindComp), objectiveId, out var objective)
+                        || !_objectives.IsCompleted(objective.Value, (mindId, mindComp)))
+                    {
+                        gib = true;
+                        break;
+                    }
+                }
+            }
+            else
+                gib = true;
+
+            if (!gib)
+                continue;
+
+            if (gibComp.SpawnProto != null)
+                SpawnAtPosition(gibComp.SpawnProto, Transform(uid).Coordinates);
+
+            _body.GibBody(uid, splatModifier: 5f);
+        }
+    }
+}

Content.Server/Roles/ParadoxCloneRoleComponent.cs

@@ -0,0 +1,9 @@
+using Content.Shared.Roles;
+
+namespace Content.Server.Roles;
+
+/// <summary>
+///     Added to mind role entities to tag that they are a paradox clone.
+/// </summary>
+[RegisterComponent]
+public sealed partial class ParadoxCloneRoleComponent : BaseMindRoleComponent;