Bullet flyby sounds (#8317)

Content.Server/Stunnable/Components/StunOnCollideComponent.cs

@@ -23,5 +23,10 @@ namespace Content.Server.Stunnable.Components
 
         [DataField("runSpeedMultiplier")]
         public float RunSpeedMultiplier = 1f;
+
+        /// <summary>
+        /// Fixture we track for the collision.
+        /// </summary>
+        [ViewVariables, DataField("fixture")] public string FixtureID = "projectile";
     }
 }

Content.Server/Stunnable/StunOnCollideSystem.cs

@@ -41,6 +41,8 @@ namespace Content.Server.Stunnable
         }
         private void HandleCollide(EntityUid uid, StunOnCollideComponent component, StartCollideEvent args)
         {
+            if (args.OurFixture.ID != component.FixtureID) return;
+
             TryDoCollideStun(uid, component, args.OtherFixture.Body.Owner);
         }