Port DeltaV syndicate objective "teach a lesson"

Content.Server/_DeltaV/Objectives/Components/TeachLessonConditionComponent.cs

@@ -0,0 +1,11 @@
+using Content.Server.DeltaV.Objectives.Systems;
+using Content.Server.Objectives.Components;
+
+namespace Content.Server.DeltaV.Objectives.Components;
+
+/// <summary>
+/// Requires that a target dies once and only once.
+/// Depends on <see cref="TargetObjectiveComponent"/> to function.
+/// </summary>
+[RegisterComponent, Access(typeof(TeachLessonConditionSystem))]
+public sealed partial class TeachLessonConditionComponent : Component;

Content.Server/_DeltaV/Objectives/Systems/TeachLessonConditionSystem.cs

@@ -0,0 +1,46 @@
+using Content.Server.DeltaV.Objectives.Components;
+using Content.Server.Objectives.Components;
+using Content.Server.Objectives.Systems;
+using Content.Shared.Mind;
+using Content.Shared.Mobs;
+
+namespace Content.Server.DeltaV.Objectives.Systems;
+
+/// <summary>
+/// Handles teach a lesson condition logic, does not assign target.
+/// </summary>
+public sealed class TeachLessonConditionSystem : EntitySystem
+{
+    [Dependency] private readonly CodeConditionSystem _codeCondition = default!;
+    [Dependency] private readonly SharedMindSystem _mind = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<MobStateChangedEvent>(OnMobStateChanged);
+    }
+
+    // TODO: subscribe by ref at some point in the future
+    private void OnMobStateChanged(MobStateChangedEvent args)
+    {
+        if (args.NewMobState != MobState.Dead)
+            return;
+
+        // Get the mind of the entity that just died (if it has one)
+        if (!_mind.TryGetMind(args.Target, out var mindId, out _))
+            return;
+
+        // Get all TeachLessonConditionComponent entities
+        var query = EntityQueryEnumerator<TeachLessonConditionComponent, TargetObjectiveComponent>();
+
+        while (query.MoveNext(out var uid, out _, out var targetObjective))
+        {
+            // Check if this objective's target matches the entity that died
+            if (targetObjective.Target != mindId)
+                continue;
+
+            _codeCondition.SetCompleted(uid);
+        }
+    }
+}

Resources/Locale/en-US/_DeltaV/Objectives/Conditions/teach-person.ftl

@@ -0,0 +1 @@
+objective-condition-teach-person-title = Teach {$targetName}, {CAPITALIZE($job)} a lesson

Resources/Prototypes/Objectives/objectiveGroups.yml

@@ -28,6 +28,7 @@
   weights:
     KillRandomPersonObjective: 1
     KillRandomHeadObjective: 0.25
+    TeachLessonRandomPersonObjective: 1 #Harmony objective
 
 - type: weightedRandom
   id: TraitorObjectiveGroupState

Resources/Prototypes/_DeltaV/Objectives/traitor.yml

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+# Base
+# teach lesson
+- type: entity
+  abstract: true
+  parent: BaseTargetObjective
+  id: BaseTeachLessonObjective
+  components:
+  - type: Objective
+    unique: false
+    icon:
+      sprite: Objects/Weapons/Melee/fireaxe.rsi
+      state: icon
+  - type: TeachLessonCondition
+  - type: CodeCondition
+  - type: ObjectiveBlacklistRequirement
+    blacklist:
+      components:
+      - SocialObjective
+
+# Kill
+- type: entity
+  parent: [BaseTraitorObjective, BaseTeachLessonObjective]
+  id: TeachLessonRandomPersonObjective
+  description: Kill them, and show everyone we mean business. They only need to die once.
+  components:
+  - type: Objective
+    difficulty: 1.75
+    unique: false
+  - type: TargetObjective
+    title: objective-condition-teach-person-title
+  - type: PickRandomPerson