Ambient sound system (#4552)

* Ambient sound system

Client-side system that plays audio from nearby objects that are randomly sampled.

* Decent

* Tweaks

* Tweaks

* Comment this out for now

* reduce VM sound

* Fix rolloff

* Fixes

* Volume tweak

Content.Shared/Audio/AmbientSoundComponent.cs

@@ -0,0 +1,46 @@
+using System;
+using Content.Shared.Sound;
+using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Shared.Audio
+{
+    [RegisterComponent]
+    [NetworkedComponent]
+    public sealed class AmbientSoundComponent : Component
+    {
+        public override string Name => "AmbientSound";
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        [DataField("enabled")]
+        public bool Enabled { get; set; } = true;
+
+        [DataField("sound")]
+        public SoundSpecifier Sound = default!;
+
+        /// <summary>
+        /// How far away this ambient sound can potentially be heard.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        [DataField("range")]
+        public float Range = 2f;
+
+        /// <summary>
+        /// Applies this volume to the sound being played.
+        /// </summary>
+        [ViewVariables(VVAccess.ReadWrite)]
+        [DataField("volume")]
+        public float Volume = -10f;
+    }
+
+    [Serializable, NetSerializable]
+    public sealed class AmbientSoundComponentState : ComponentState
+    {
+        public bool Enabled { get; init; }
+        public float Range { get; init; }
+        public float Volume { get; init; }
+    }
+}