Added personal signature system (#382)

* Added personal signature system

* FUCKING RUSSIAN LANUAGE

A HATE LATTERS, HATEEEEEEEEEEEEEEEEEEEEEEE!

* Added locale and sound

Content.Server/_CP14/PersonalSignature/CP14PersonalSignatureComponent.cs

@@ -0,0 +1,10 @@
+using Robust.Shared.Audio;
+
+namespace Content.Server._CP14.PersonalSignature;
+
+[RegisterComponent]
+public sealed partial class CP14PersonalSignatureComponent : Component
+{
+    [DataField]
+    public SoundSpecifier? SignSound;
+}

Content.Server/_CP14/PersonalSignature/CP14PersonalSignatureSystem.cs

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+using System.Diagnostics.CodeAnalysis;
+using Content.Server.Mind;
+using Content.Server.Paper;
+using Content.Shared.Hands.Components;
+using Content.Shared.Paper;
+using Content.Shared.Verbs;
+using Robust.Server.Audio;
+using Robust.Shared.Audio;
+using Robust.Shared.Player;
+
+namespace Content.Server._CP14.PersonalSignature;
+
+public sealed class CP14PersonalSignatureSystem : EntitySystem
+{
+    [Dependency] private readonly AudioSystem _audio = default!;
+    [Dependency] private readonly MindSystem _mind = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<PaperComponent, GetVerbsEvent<AlternativeVerb>>(OnGetVerb);
+    }
+
+    private void OnGetVerb(Entity<PaperComponent> entity, ref GetVerbsEvent<AlternativeVerb> args)
+    {
+        if (!_mind.TryGetMind(args.User, out _, out var mind))
+            return;
+
+        if (mind.CharacterName is null)
+            return;
+
+        if (!CanSign(args.Using, out var signature))
+            return;
+
+        if (HasSign(entity, mind.CharacterName))
+            return;
+
+        args.Verbs.Add(new AlternativeVerb
+        {
+            Text = Loc.GetString("cp-sign-verb"),
+            Act = () =>
+            {
+                Sign(entity, mind.CharacterName, signature.SignSound);
+            },
+        });
+    }
+
+    private bool CanSign(EntityUid? item, [NotNullWhen(true)] out CP14PersonalSignatureComponent? personalSignature)
+    {
+        personalSignature = null;
+        return item is not null && TryComp(item, out personalSignature);
+    }
+
+    private bool HasSign(Entity<PaperComponent> entity, string sign)
+    {
+        foreach (var info in entity.Comp.StampedBy)
+        {
+            if (info.StampedName == sign)
+                return true;
+        }
+
+        return false;
+    }
+
+    private void Sign(Entity<PaperComponent> target, string name, SoundSpecifier? sound)
+    {
+        var info = new StampDisplayInfo
+        {
+            StampedName = name,
+            StampedColor = Color.Gray,
+        };
+
+        if (sound is not null)
+            _audio.PlayEntity(sound, Filter.Pvs(target), target, true);
+
+        target.Comp.StampedBy.Add(info);
+    }
+}

Resources/Locale/en-US/_CP14/presonal-signature/verbs.ftl

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+cp-sign-verb = Sign

Resources/Locale/ru-RU/_CP14/presonal-signature/verbs.ftl

@@ -0,0 +1 @@
+cp-sign-verb = Подписать