Bullet impact effects (#9530)

Content.Shared/Projectiles/SharedProjectileSystem.cs

@@ -1,4 +1,6 @@
+using Robust.Shared.Map;
 using Robust.Shared.Physics.Dynamics;
+using Robust.Shared.Serialization;
 
 namespace Content.Shared.Projectiles
 {
@@ -20,5 +22,39 @@ namespace Content.Shared.Projectiles
                 return;
             }
         }
+
+        public void SetShooter(SharedProjectileComponent component, EntityUid uid)
+        {
+            if (component.Shooter == uid) return;
+
+            component.Shooter = uid;
+            Dirty(component);
+        }
+
+        [NetSerializable, Serializable]
+        protected sealed class ProjectileComponentState : ComponentState
+        {
+            public ProjectileComponentState(EntityUid shooter, bool ignoreShooter)
+            {
+                Shooter = shooter;
+                IgnoreShooter = ignoreShooter;
+            }
+
+            public EntityUid Shooter { get; }
+            public bool IgnoreShooter { get; }
+        }
+
+        [Serializable, NetSerializable]
+        protected sealed class ImpactEffectEvent : EntityEventArgs
+        {
+            public string Prototype;
+            public EntityCoordinates Coordinates;
+
+            public ImpactEffectEvent(string prototype, EntityCoordinates coordinates)
+            {
+                Prototype = prototype;
+                Coordinates = coordinates;
+            }
+        }
     }
 }