Anomaly Cores (#21306)

* add first anomaly core

* meme

* 5 min to 10 min
fix yml

* fix

* Update doc

* no static price

Content.Server/Anomaly/Components/AnomalyCoreComponent.cs

@@ -0,0 +1,42 @@
+using Content.Server.Anomaly.Effects;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
+namespace Content.Server.Anomaly.Components;
+
+/// <summary>
+/// This component exists for a limited time, and after it expires it modifies the entity, greatly reducing its value and changing its visuals
+/// </summary>
+[RegisterComponent, Access(typeof(AnomalyCoreSystem))]
+public sealed partial class AnomalyCoreComponent : Component
+{
+
+    /// <summary>
+    /// Amount of time required for the core to decompose into an inert core
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public double TimeToDecay = 600;
+
+    /// <summary>
+    /// The moment of core decay. It is set during entity initialization.
+    /// </summary>
+    [DataField(customTypeSerializer: typeof(TimeOffsetSerializer)), ViewVariables(VVAccess.ReadWrite)]
+    public TimeSpan DecayMoment;
+
+    /// <summary>
+    /// The starting value of the entity.
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public double StartPrice = 10000;
+
+    /// <summary>
+    /// The value of the object sought during decaying
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public double EndPrice = 200;
+
+    /// <summary>
+    /// Has the core decayed?
+    /// </summary>
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public bool IsDecayed;
+}