Add noir glasses (#36923)

hardboiled

Content.Client/Overlays/BlackAndWhiteOverlaySystem.cs

@@ -0,0 +1,34 @@
+using Content.Shared.Inventory.Events;
+using Content.Shared.Overlays;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+
+namespace Content.Client.Overlays;
+
+public sealed partial class BlackAndWhiteOverlaySystem : EquipmentHudSystem<BlackAndWhiteOverlayComponent>
+{
+    [Dependency] private readonly IOverlayManager _overlayMan = default!;
+
+    private BlackAndWhiteOverlay _overlay = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        _overlay = new();
+    }
+
+    protected override void UpdateInternal(RefreshEquipmentHudEvent<BlackAndWhiteOverlayComponent> component)
+    {
+        base.UpdateInternal(component);
+
+        _overlayMan.AddOverlay(_overlay);
+    }
+
+    protected override void DeactivateInternal()
+    {
+        base.DeactivateInternal();
+
+        _overlayMan.RemoveOverlay(_overlay);
+    }
+}