Figures can now be activated remotely (space-wizards#32769)

* First commit

* I'm silly

* weh

* will this work?

* Better design

* Fixes!

* rider :(

* L rider

Content.Server/Chat/SpeakOnTriggerComponent.cs

@@ -0,0 +1,17 @@
+using Content.Shared.Dataset;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server.Chat;
+
+/// <summary>
+///     Makes the entity speak when triggered. If the item has UseDelay component, the system will respect that cooldown.
+/// </summary>
+[RegisterComponent]
+public sealed partial class SpeakOnTriggerComponent : Component
+{
+    /// <summary>
+    ///     The identifier for the dataset prototype containing messages to be spoken by this entity.
+    /// </summary>
+    [DataField(required: true)]
+    public ProtoId<LocalizedDatasetPrototype> Pack = string.Empty;
+}

Content.Server/Chat/Systems/SpeakOnTriggerSystem.cs

@@ -0,0 +1,42 @@
+using Content.Server.Explosion.EntitySystems;
+using Content.Shared.Timing;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Server.Chat.Systems;
+
+public sealed class SpeakOnTriggerSystem : EntitySystem
+{
+    [Dependency] private readonly UseDelaySystem _useDelay = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly ChatSystem _chat = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<SpeakOnTriggerComponent, TriggerEvent>(OnTrigger);
+    }
+
+    private void OnTrigger(Entity<SpeakOnTriggerComponent> ent, ref TriggerEvent args)
+    {
+        TrySpeak(ent);
+        args.Handled = true;
+    }
+
+    private void TrySpeak(Entity<SpeakOnTriggerComponent> ent)
+    {
+        // If it doesn't have the use delay component, still send the message.
+        if (TryComp<UseDelayComponent>(ent.Owner, out var useDelay) && _useDelay.IsDelayed((ent.Owner, useDelay)))
+            return;
+
+        if (!_prototypeManager.TryIndex(ent.Comp.Pack, out var messagePack))
+            return;
+
+        var message = Loc.GetString(_random.Pick(messagePack.Values));
+        _chat.TrySendInGameICMessage(ent.Owner, message, InGameICChatType.Speak, true);
+
+        if (useDelay != null)
+            _useDelay.TryResetDelay((ent.Owner, useDelay));
+    }
+}