Wires are now actually hidden by floor tiles. (#181)

Content.Client/GameObjects/Components/SubFloorHideComponent.cs

@@ -0,0 +1,50 @@
+using Content.Shared.Maps;
+using SS14.Client.Interfaces.GameObjects.Components;
+using SS14.Shared.GameObjects;
+using SS14.Shared.GameObjects.Components.Transform;
+
+namespace Content.Client.GameObjects.Components
+{
+    /// <summary>
+    ///     Simple component that automatically hides the sibling <see cref="ISpriteComponent"/> when the tile it's on
+    ///     is not a sub floor (plating).
+    /// </summary>
+    /// <seealso cref="ContentTileDefinition.IsSubFloor"/>
+    public sealed class SubFloorHideComponent : Component
+    {
+        private SnapGridComponent _snapGridComponent;
+
+        public override string Name => "SubFloorHide";
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            _snapGridComponent = Owner.GetComponent<SnapGridComponent>();
+        }
+
+        public override void Startup()
+        {
+            base.Startup();
+
+            _snapGridComponent.OnPositionChanged += SnapGridOnPositionChanged;
+            Owner.EntityManager.RaiseEvent(Owner, new SubFloorHideDirtyEvent());
+        }
+
+        public override void Shutdown()
+        {
+            base.Shutdown();
+
+            _snapGridComponent.OnPositionChanged -= SnapGridOnPositionChanged;
+        }
+
+        private void SnapGridOnPositionChanged()
+        {
+            Owner.EntityManager.RaiseEvent(Owner, new SubFloorHideDirtyEvent());
+        }
+    }
+
+    internal sealed class SubFloorHideDirtyEvent : EntitySystemMessage
+    {
+    }
+}