Salvage magnet revamp (#23119)

* Generic offering window

* More work

* weh

* Parity

* Progression meter

* magnet

* rona

* PG asteroid work

* code red

* Asteroid spawnings

* clams

* a

* Marker fixes

* More fixes

* Workings of biome asteroids

* A

* Fix this loading code

* a

* Fix masking

* weh

* Fixes

* Magnet claiming

* toe

* petogue

* magnet

* Bunch of fixes

* Fix default

* Fixes

* asteroids

* Fix offerings

* Localisation and a bunch of fixes

* a

* Fixes

* Preliminary draft

* Announcement fixes

* Fixes and bump spawn rate

* Fix asteroid spawns and UI

* More fixes

* Expeditions fix

* fix

* Gravity

* Fix announcement rounding

* a

* Offset tweak

* sus

* jankass

* Fix merge

Content.Server/Salvage/Magnet/SalvageMagnetComponent.cs

@@ -0,0 +1,7 @@
+namespace Content.Server.Salvage.Magnet;
+
+[RegisterComponent]
+public sealed partial class SalvageMagnetComponent : Component
+{
+
+}

Content.Server/Salvage/Magnet/SalvageMagnetDataComponent.cs

@@ -0,0 +1,57 @@
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom;
+
+namespace Content.Server.Salvage.Magnet;
+
+/// <summary>
+/// Added to the station to hold salvage magnet data.
+/// </summary>
+[RegisterComponent]
+public sealed partial class SalvageMagnetDataComponent : Component
+{
+    // May be multiple due to splitting.
+
+    /// <summary>
+    /// Entities currently magnetised.
+    /// </summary>
+    [DataField]
+    public List<EntityUid>? ActiveEntities;
+
+    /// <summary>
+    /// If the magnet is currently active when does it end.
+    /// </summary>
+    [DataField(customTypeSerializer:typeof(TimeOffsetSerializer))]
+    public TimeSpan? EndTime;
+
+    [DataField(customTypeSerializer:typeof(TimeOffsetSerializer))]
+    public TimeSpan NextOffer;
+
+    /// <summary>
+    /// How long salvage will be active for before despawning.
+    /// </summary>
+    [DataField]
+    public TimeSpan ActiveTime = TimeSpan.FromMinutes(6);
+
+    /// <summary>
+    /// Cooldown between offerings after one ends.
+    /// </summary>
+    [DataField]
+    public TimeSpan OfferCooldown = TimeSpan.FromMinutes(3);
+
+    /// <summary>
+    /// Seeds currently offered
+    /// </summary>
+    [DataField]
+    public List<int> Offered = new();
+
+    [DataField]
+    public int OfferCount = 6;
+
+    [DataField]
+    public int ActiveSeed;
+
+    /// <summary>
+    /// Final countdown announcement.
+    /// </summary>
+    [DataField]
+    public bool Announced;
+}

Content.Server/Salvage/Magnet/SalvageMagnetTargetComponent.cs

@@ -0,0 +1,14 @@
+namespace Content.Server.Salvage.Magnet;
+
+/// <summary>
+/// Indicates the entity is a salvage target for tracking.
+/// </summary>
+[RegisterComponent]
+public sealed partial class SalvageMagnetTargetComponent : Component
+{
+    /// <summary>
+    /// Entity that spawned us.
+    /// </summary>
+    [DataField]
+    public EntityUid DataTarget;
+}

Content.Server/Salvage/Magnet/SalvageMobRestrictionsComponent.cs

@@ -0,0 +1,12 @@
+namespace Content.Server.Salvage.Magnet;
+
+// This is dumb
+/// <summary>
+/// Deletes the attached entity if the linked entity is deleted.
+/// </summary>
+[RegisterComponent]
+public sealed partial class SalvageMobRestrictionsComponent : Component
+{
+    [DataField, ViewVariables(VVAccess.ReadWrite)]
+    public EntityUid LinkedEntity;
+}