Diseases (#7057)

* Disease system first pass

* Renamed HealthChange

* First working version of diseases (wtf???)

* Fix the cursed yaml initialization

* Pop-Up effect

* Generic status effect

* Create copy of prototype

* CureDiseaseEffect

* Disease resistance

* Spaceacillin

* Nerf spaceacillin now that we know it works

* Sneezing, Coughing, Snoughing

* Fix queuing, prevent future issues

* Disease protection

* Disease outbreak event

* Disease Reagent Cure

* Chem cause disease effect

* Disease artifacts

* Try infect when interacting with diseased

* Diseases don't have to be infectious

* Talking without a mask does a snough

* Temperature cure

* Bedrest

* DiseaseAdjustReagent

* Tweak how disease statuses work to be a bit less shit

* A few more diseases

* Natural immunity (can't get the same disease twice)

* Polished up some diseases, touched up spaceacillin production

* Rebalanced transmission

* Edit a few diseases, make disease cures support a minimum value

* Nitrile gloves, more disease protection sources

* Health scanner shows diseased status

* Clean up disease system

* Traitor item

* Mouth swabs

* Disease diagnoser machine

* Support for clean samples

* Vaccines + fixes

* Pass on disease resistant clothes

* More work on non-infectious diseases & vaccines

* Handle dead bodies

* Added the relatively CBT visualizer

* Pass over diseases and their populators

* Comment stuff

* Readability cleanup

* Add printing sound to diagnoser, fix printing bug

* vaccinator sound, seal up some classes

* Make disease protection equip detection not shit (thanks whoever wrote addaccentcomponent)

* Mirror review

* More review stuff

* More mirror review stuff

* Refactor snoughing

* Redid report creator

* Fix snough messages, new vaccinator sound

* Mirror review naming

* Woops, forgot the artifact

* Add recipes and fills

* Rebalance space cold and robovirus

* Give lizarb disease interaction stuff

* Tweak some stuff and move things around

* Add diseases to mice (since animal vectors are interesting and can be used to make vaccines)

* Remove unused reagent

Content.Server/StationEvents/Events/DiseaseOutbreak.cs

@@ -0,0 +1,62 @@
+using System.Linq;
+using Content.Server.Chat.Managers;
+using Content.Server.Disease.Components;
+using Content.Server.Disease;
+using Content.Shared.Disease;
+using Robust.Shared.Random;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.StationEvents.Events;
+/// <summary>
+/// Infects a couple people
+/// with a random disease that isn't super deadly
+/// </summary>
+public sealed class DiseaseOutbreak : StationEvent
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly IEntityManager _entityManager = default!;
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly IChatManager _chatManager = default!;
+
+    /// <summary>
+    /// Disease prototypes I decided were not too deadly for a random event
+    /// </summary>
+    public readonly IReadOnlyList<string> NotTooSeriousDiseases = new[]
+    {
+        "SpaceCold",
+        "VanAusdallsRobovirus",
+        "VentCough",
+        "AMIV"
+    };
+    public override string Name => "DiseaseOutbreak";
+    public override float Weight => WeightNormal;
+    protected override float EndAfter => 1.0f;
+    /// <summary>
+    /// Finds 2-5 random entities that can host diseases
+    /// and gives them a randomly selected disease.
+    /// They all get the same disease.
+    /// </summary>
+    public override void Startup()
+    {
+        base.Startup();
+
+        var targetList = _entityManager.EntityQuery<DiseaseCarrierComponent>().ToList();
+        _random.Shuffle(targetList);
+
+        var toInfect = _random.Next(2, 5);
+
+        var diseaseName = _random.Pick(NotTooSeriousDiseases);
+
+        if (!_prototypeManager.TryIndex(diseaseName, out DiseasePrototype? disease) || disease == null)
+            return;
+
+        foreach (var target in targetList)
+        {
+            if (toInfect-- == 0)
+                break;
+
+            EntitySystem.Get<DiseaseSystem>().TryAddDisease(target, disease);
+        }
+        _chatManager.DispatchStationAnnouncement(Loc.GetString("station-event-disease-outbreak-announcement"));
+    }
+}

Content.Server/StationEvents/Events/VentClog.cs

@@ -42,7 +42,7 @@ public sealed class VentClog : StationEvent
     public readonly IReadOnlyList<string> SafeishVentChemicals = new[]
     {
         "Water", "Iron", "Oxygen", "Tritium", "Plasma", "SulfuricAcid", "Blood", "SpaceDrugs", "SpaceCleaner", "Flour",
-        "Nutriment", "Sugar", "SpaceLube", "Ethanol", "Mercury", "Ephedrine", "WeldingFuel"
+        "Nutriment", "Sugar", "SpaceLube", "Ethanol", "Mercury", "Ephedrine", "WeldingFuel", "VentCrud"
     };
 
     public override void Startup()