The Rat King [Antag] (#8706)

* vending machine go spit

* who's da rat, bozo

* fixes

* crown + fixes

* aaaa

* aa

* lololol

* removing vending shit + most annoying fix alive

* paul review

* moony fixes

* sloth review

* Minor diseasesystem fix

* inverse moment

* A

* Also reduce args allocations

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/Disease/Components/DiseaseCarrierComponent.cs

@@ -1,13 +1,14 @@
 using System.Linq;
 using Content.Shared.Disease;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.Set;
 
 namespace Content.Server.Disease.Components
 {
-    [RegisterComponent]
     /// <summary>
-    /// Allows the enity to be infected with diseases.
+    /// Allows the entity to be infected with diseases.
     /// Please use only on mobs.
     /// </summary>
+    [RegisterComponent]
     public sealed class DiseaseCarrierComponent : Component
     {
         /// <summary>
@@ -15,22 +16,33 @@ namespace Content.Server.Disease.Components
         /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
         public List<DiseasePrototype> Diseases = new();
+
         /// <summary>
         /// The carrier's resistance to disease
         /// </summary>
         [DataField("diseaseResist")]
         [ViewVariables(VVAccess.ReadWrite)]
         public float DiseaseResist = 0f;
+
         /// <summary>
         /// Diseases the carrier has had, used for immunity.
-        /// <summary>
+        /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
         public List<DiseasePrototype> PastDiseases = new();
+
         /// <summary>
         /// All the diseases the carrier has or has had.
         /// Checked against when trying to add a disease
-        /// <summary>
+        /// </summary>
         [ViewVariables(VVAccess.ReadWrite)]
         public List<DiseasePrototype> AllDiseases => PastDiseases.Concat(Diseases).ToList();
+
+        /// <summary>
+        /// A list of diseases which the entity does not
+        /// exhibit direct symptoms from. They still transmit
+        /// these diseases, just without symptoms.
+        /// </summary>
+        [ViewVariables, DataField("carrierDiseases", customTypeSerializer: typeof(PrototypeIdHashSetSerializer<DiseasePrototype>))]
+        public HashSet<string>? CarrierDiseases;
     }
 }