Adds Handheld Radio/Listener system (#1457)

* re-do of old PR that got fuckied upp

* simplify foreach as suggested

* pass distance to PassSpeechData for a check, remove GetListenRange()

* adds RadioQuery instead of subscribing/unsubscribing

* change SpreadMessage to accept owner rather than component

* change RadioQuery to EntityQuery

* remove declared EntityQuery (oops, didn't know what shadowcommander meant)

* refactor ListeningSystem & refactor added chat logic into listen sys

* IGNORE the oopsie STOP LOOKING

Content.Server/GameObjects/Components/ListeningComponent.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Content.Server.GameObjects.Components.Interactable;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Server.Interfaces;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Content.Server.GameObjects.Components
+{
+    [RegisterComponent]
+    public class ListeningComponent : Component
+    {
+
+        public override string Name => "Listening";
+
+        public void PassSpeechData(string speech, IEntity source, float distance)
+        {
+            
+            foreach (var listener in Owner.GetAllComponents<IListen>())
+            {
+                if (distance > listener.GetListenRange()) { continue; }
+                listener.HeardSpeech(speech, source);
+            }
+        }
+    }
+}

Content.Server/GameObjects/Components/RadioComponent.cs

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+using System;
+using System.Collections.Generic;
+using System.Text;
+using Content.Server.GameObjects.EntitySystems;
+using Content.Server.Interfaces;
+using Content.Server.Interfaces.Chat;
+using Content.Server.Interfaces.GameObjects.Components.Interaction;
+using Content.Shared.Interfaces.GameObjects.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Components;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.Interactable
+{
+    [RegisterComponent]
+    class RadioComponent : Component, IUse, IListen
+    {
+#pragma warning disable 649
+        [Dependency] private readonly IEntitySystemManager _entitySystemManager = default!;
+        [Dependency] private readonly IServerNotifyManager _notifyManager = default!;
+#pragma warning restore 649
+
+        public override string Name => "Radio";
+
+        private bool _radioOn;
+        private int _listenRange = 7;
+        private RadioSystem _radioSystem = default!;
+
+        [ViewVariables]
+        public bool RadioOn
+        {
+            get => _radioOn;
+            private set
+            {
+                _radioOn = value;
+                Dirty();
+            }
+        }
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            _radioSystem = _entitySystemManager.GetEntitySystem<RadioSystem>();
+
+            RadioOn = false;
+        }
+
+        public void PassOnMessage(string message)
+        {
+            if(RadioOn)
+            {
+                _radioSystem.SpreadMessage(Owner, message);
+            }
+        }
+
+        public void Speaker(string message)
+        {
+            var chat = IoCManager.Resolve<IChatManager>();
+            chat.EntitySay(Owner, message);
+        }
+
+        public bool UseEntity(UseEntityEventArgs eventArgs)
+        {
+            RadioOn = !RadioOn;
+            if(RadioOn)
+            {
+                _notifyManager.PopupMessage(Owner, eventArgs.User, "The radio is now on.");
+            }
+            else
+            {
+                _notifyManager.PopupMessage(Owner, eventArgs.User, "The radio is now off.");
+            }
+            return true;
+        }
+
+        public void HeardSpeech(string speech, IEntity source)
+        {
+            PassOnMessage(speech);
+        }
+
+        public int GetListenRange()
+        {
+            return _listenRange;
+        }
+    }
+}

Content.Server/GameObjects/EntitySystems/ListeningSystem.cs

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+using Content.Server.GameObjects.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using Robust.Shared.Interfaces.Map;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    class ListeningSystem : EntitySystem
+    {
+#pragma warning disable 649
+        [Dependency] private readonly IMapManager _mapManager;
+        [Dependency] private readonly IEntitySystemManager _entitySystemManager;
+#pragma warning restore 649
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            EntityQuery = new TypeEntityQuery(typeof(ListeningComponent));
+        }
+
+        public void PingListeners(IEntity source, GridCoordinates sourcePos, string message)
+        {
+            foreach (var listener in RelevantEntities)
+            {
+                var dist = sourcePos.Distance(_mapManager, listener.Transform.GridPosition);
+
+                listener.GetComponent<ListeningComponent>()
+                        .PassSpeechData(message, source, dist);
+            }
+        }
+    }
+}

Content.Server/GameObjects/EntitySystems/RadioSystem.cs

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+using Content.Server.GameObjects.Components.Interactable;
+using JetBrains.Annotations;
+using Microsoft.CodeAnalysis.CSharp.Syntax;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameObjects.Systems;
+using Robust.Shared.Interfaces.GameObjects;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    class RadioSystem : EntitySystem
+    {
+        private List<string> _messages;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            EntityQuery = new TypeEntityQuery(typeof(RadioComponent));
+            _messages = new List<string>();
+        }
+
+        public void SpreadMessage(IEntity source, string message)
+        {
+            if (_messages.Contains(message))
+            {
+                return;
+            }
+
+            _messages.Add(message);
+
+            foreach (var radioEntity in RelevantEntities)
+            {
+                var radio = radioEntity.GetComponent<RadioComponent>();
+                if (radioEntity == source || !radio.RadioOn)
+                {
+                    continue;
+                }
+
+                radio.Speaker(message);
+            }
+
+            _messages.Remove(message);
+        }
+    }
+}