Refactor AccentManager to be an entity system, makes accents ECS. (#4825)

Content.Server/Speech/AccentSystem.cs

@@ -0,0 +1,49 @@
+using System.Text.RegularExpressions;
+using Content.Server.Chat.Managers;
+using Content.Server.Speech.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.Speech
+{
+    public class AccentSystem : EntitySystem
+    {
+        [Dependency] private readonly IChatManager _chatManager = default!;
+
+        public static readonly Regex SentenceRegex = new(@"(?<=[\.!\?])");
+
+        public override void Initialize()
+        {
+            _chatManager.RegisterChatTransform(AccentHandler);
+        }
+
+        public string AccentHandler(IEntity player, string message)
+        {
+            var accentEvent = new AccentGetEvent(player.Uid, message);
+
+            RaiseLocalEvent(player.Uid, accentEvent);
+
+            return accentEvent.Message;
+        }
+    }
+
+    public class AccentGetEvent : EntityEventArgs
+    {
+        /// <summary>
+        ///     The entity to apply the accent to.
+        /// </summary>
+        public EntityUid Entity { get; }
+
+        /// <summary>
+        ///     The message to apply the accent transformation to.
+        ///     Modify this to apply the accent.
+        /// </summary>
+        public string Message { get; set; }
+
+        public AccentGetEvent(EntityUid entity, string message)
+        {
+            Entity = entity;
+            Message = message;
+        }
+    }
+}