radio falloff

Content.Server/Radio/EntitySystems/RadioSystem.cs

@@ -14,6 +14,9 @@
 using Robust.Shared.Random;
 using Robust.Shared.Replays;
 using Robust.Shared.Utility;
+// ES START
+using Content.Server._ES.Radio;
+// ES END
 
 namespace Content.Server.Radio.EntitySystems;
 
@@ -28,6 +31,9 @@ public sealed class RadioSystem : EntitySystem
     [Dependency] private readonly IPrototypeManager _prototype = default!;
     [Dependency] private readonly IRobustRandom _random = default!;
     [Dependency] private readonly ChatSystem _chat = default!;
+// ES START
+    [Dependency] private readonly ESRadioSystem _esRadio = default!;
+// ES END
 
     // set used to prevent radio feedback loops.
     private readonly HashSet<string> _messages = new();
@@ -145,6 +151,26 @@ public void SendRadioMessage(EntityUid messageSource, string message, RadioChann
             RaiseLocalEvent(receiver, ref attemptEv);
             if (attemptEv.Cancelled)
                 continue;
+// ES START
+            var distortedMessage = _esRadio.DistortMessage(radioSource, receiver, FormattedMessage.EscapeText(message));
+            var distortedWrappedMessage = Loc.GetString(speech.Bold ? "chat-radio-message-wrap-bold" : "chat-radio-message-wrap",
+                ("color", channel.Color),
+                ("fontType", speech.FontId),
+                ("fontSize", speech.FontSize),
+                ("verb", Loc.GetString(_random.Pick(speech.SpeechVerbStrings))),
+                ("channel", $"\\[{channel.LocalizedName}\\]"),
+                ("name", name),
+                ("message", distortedMessage));
+
+            chat = new ChatMessage(
+                ChatChannel.Radio,
+                distortedMessage,
+                distortedWrappedMessage,
+                NetEntity.Invalid,
+                null);
+            chatMsg = new MsgChatMessage { Message = chat };
+            ev = new RadioReceiveEvent(message, messageSource, channel, radioSource, chatMsg);
+// ES END
 
             // send the message
             RaiseLocalEvent(receiver, ref ev);

Content.Server/_ES/Radio/Components/ESRadioFalloffComponent.cs

@@ -0,0 +1,18 @@
+using Content.Shared.Dataset;
+using Robust.Shared.Prototypes;
+
+namespace Content.Server._ES.Radio.Components;
+
+[RegisterComponent]
+[Access(typeof(ESRadioSystem))]
+public sealed partial class ESRadioFalloffComponent : Component
+{
+    [DataField]
+    public float MaxClearSendDistance = 15f;
+
+    [DataField]
+    public float MaxSendDistance = 50f;
+
+    [DataField]
+    public ProtoId<LocalizedDatasetPrototype> FalloffInterjectionDataset = "ESRadioFalloffInterjections";
+}

Content.Server/_ES/Radio/ESRadioSystem.cs

@@ -0,0 +1,85 @@
+using System.Text;
+using Content.Server._ES.Radio.Components;
+using Content.Server.Radio;
+using Robust.Server.GameObjects;
+using Robust.Shared.Prototypes;
+using Robust.Shared.Random;
+
+namespace Content.Server._ES.Radio;
+
+public sealed class ESRadioSystem : EntitySystem
+{
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+    [Dependency] private readonly TransformSystem _transform = default!;
+
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<ESRadioFalloffComponent, RadioReceiveAttemptEvent>(OnFalloffReceiveAttempt);
+    }
+
+    private void OnFalloffReceiveAttempt(Entity<ESRadioFalloffComponent> ent, ref RadioReceiveAttemptEvent args)
+    {
+        if (args.Cancelled)
+            return;
+
+        if (_transform.InRange(args.RadioSource, args.RadioReceiver, ent.Comp.MaxSendDistance))
+            return;
+        args.Cancelled = true;
+    }
+
+    public string DistortMessage(Entity<ESRadioFalloffComponent?> receiver, EntityUid sender, string message)
+    {
+        var msg = message;
+
+        if (!Resolve(receiver, ref receiver.Comp, false))
+            return msg;
+
+        var receiverXform = Transform(receiver);
+        var senderXform = Transform(sender);
+
+        if (!receiverXform.Coordinates.TryDistance(EntityManager, _transform, senderXform.Coordinates, out var distance))
+            return msg;
+
+        var distortion = (distance - receiver.Comp.MaxClearSendDistance) / (receiver.Comp.MaxSendDistance - receiver.Comp.MaxClearSendDistance);
+        if (distortion < 0) // only distort if we're in the range.
+            return msg;
+
+        var muffleChance = MathHelper.Lerp(0.05f, 0.4f, distortion);
+
+        var outputMsg = new StringBuilder();
+        foreach (var letter in msg.AsSpan())
+        {
+            if (!char.IsLetterOrDigit(letter))
+            {
+                outputMsg.Append(letter);
+                continue;
+            }
+
+            if (_random.Prob(muffleChance))
+                outputMsg.Append('~');
+            else
+                outputMsg.Append(letter);
+        }
+
+        msg = outputMsg.ToString();
+        outputMsg.Clear();
+
+        var interjectionChance = Math.Clamp(MathHelper.Lerp(-0.1f, 0.5f, distortion), 0, 1);
+        var interjection = _prototypeManager.Index(receiver.Comp.FalloffInterjectionDataset);
+        foreach (var word in msg.Split(' '))
+        {
+            if (_random.Prob(interjectionChance))
+            {
+                outputMsg.Append(Loc.GetString(_random.Pick(interjection.Values)));
+                outputMsg.Append(' ');
+            }
+
+            outputMsg.Append(word);
+            outputMsg.Append(' ');
+        }
+
+        return outputMsg.ToString().TrimEnd();
+    }
+}

Resources/Locale/en-US/_ES/radio/falloff.ftl

@@ -0,0 +1,5 @@
+es-radio-falloff-interjection-1 = [italic]--BZZT--[/italic]
+es-radio-falloff-interjection-2 = [italic]--KRSSH--[/italic]
+es-radio-falloff-interjection-3 = [italic]--CRACKLE--[/italic]
+es-radio-falloff-interjection-4 = [italic]--PSSSHT--[/italic]
+es-radio-falloff-interjection-5 = [italic]--PZZAT--[/italic]

Resources/Prototypes/Entities/Clothing/Ears/headsets.yml

@@ -26,6 +26,9 @@
   - type: GuideHelp
     guides:
     - Radio
+# ES START
+  - type: ESRadioFalloff
+# ES END
 
 - type: entity
   parent: ClothingHeadset

Resources/Prototypes/_ES/Datasets/radio.yml

@@ -0,0 +1,5 @@
+- type: localizedDataset
+  id: ESRadioFalloffInterjections
+  values:
+    prefix: es-radio-falloff-interjection-
+    count: 5