Bullet flyby sounds (#8317)

Content.Shared/Projectiles/SharedProjectileSystem.cs

@@ -0,0 +1,24 @@
+using Robust.Shared.Physics.Dynamics;
+
+namespace Content.Shared.Projectiles
+{
+    public abstract class SharedProjectileSystem : EntitySystem
+    {
+        public const string ProjectileFixture = "projectile";
+
+        public override void Initialize()
+        {
+            base.Initialize();
+            SubscribeLocalEvent<SharedProjectileComponent, PreventCollideEvent>(PreventCollision);
+        }
+
+        private void PreventCollision(EntityUid uid, SharedProjectileComponent component, PreventCollideEvent args)
+        {
+            if (component.IgnoreShooter && args.BodyB.Owner == component.Shooter)
+            {
+                args.Cancel();
+                return;
+            }
+        }
+    }
+}