fishops nerf real (#25148)

* refactor ops

* inherit dna and fiber when fish hydrated

* :trollface:

* kid named finger

* :trollface:

* move rehydrating to shared :trollface:

* nobody noticed the popup being missing all this time

* method ops

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/Chemistry/EntitySystems/RehydratableSystem.cs

@@ -0,0 +1,49 @@
+using Content.Shared.Chemistry.Components;
+using Content.Shared.FixedPoint;
+using Content.Shared.Popups;
+using Robust.Shared.Random;
+
+namespace Content.Shared.Chemistry.EntitySystems;
+
+public sealed class RehydratableSystem : EntitySystem
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly SharedPopupSystem _popup = default!;
+    [Dependency] private readonly SharedSolutionContainerSystem _solutions = default!;
+    [Dependency] private readonly SharedTransformSystem _xform = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<RehydratableComponent, SolutionContainerChangedEvent>(OnSolutionChange);
+    }
+
+    private void OnSolutionChange(Entity<RehydratableComponent> ent, ref SolutionContainerChangedEvent args)
+    {
+        var quantity = _solutions.GetTotalPrototypeQuantity(ent, ent.Comp.CatalystPrototype);
+        if (quantity != FixedPoint2.Zero && quantity >= ent.Comp.CatalystMinimum)
+        {
+            Expand(ent);
+        }
+    }
+
+    // Try not to make this public if you can help it.
+    private void Expand(Entity<RehydratableComponent> ent)
+    {
+        var (uid, comp) = ent;
+
+        var randomMob = _random.Pick(comp.PossibleSpawns);
+
+        var target = Spawn(randomMob, Transform(uid).Coordinates);
+        _popup.PopupEntity(Loc.GetString("rehydratable-component-expands-message", ("owner", uid)), target);
+
+        _xform.AttachToGridOrMap(target);
+        var ev = new GotRehydratedEvent(target);
+        RaiseLocalEvent(uid, ref ev);
+
+        // prevent double hydration while queued
+        RemComp<RehydratableComponent>(uid);
+        QueueDel(uid);
+    }
+}