[2 lines] fix blinding (#9690)

* Adds blinding + blindfolds (#8688)

* Adds blinding + blindfolds

* Don't break examining lol

* moment

* fix toggle lights behavior

* move checks around

* Sloth review

* Added a salvage funny

* review

* woops

* Switch circle shader

Co-authored-by: wrexbe <wrexbe@protonmail.com>

* resolve merge conflict

Co-authored-by: wrexbe <wrexbe@protonmail.com>

Content.Client/Eye/Blinding/BlindingSystem.cs

@@ -0,0 +1,55 @@
+
+using Content.Shared.Eye.Blinding;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+
+namespace Content.Client.Eye.Blinding;
+
+public sealed class BlindingSystem : EntitySystem
+{
+    [Dependency] private readonly IPlayerManager _player = default!;
+    [Dependency] private readonly IOverlayManager _overlayMan = default!;
+    [Dependency] ILightManager _lightManager = default!;
+
+
+    private BlindOverlay _overlay = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<BlindableComponent, ComponentInit>(OnBlindInit);
+        SubscribeLocalEvent<BlindableComponent, ComponentShutdown>(OnBlindShutdown);
+
+        SubscribeLocalEvent<BlindableComponent, PlayerAttachedEvent>(OnPlayerAttached);
+        SubscribeLocalEvent<BlindableComponent, PlayerDetachedEvent>(OnPlayerDetached);
+
+        _overlay = new();
+    }
+
+    private void OnPlayerAttached(EntityUid uid, BlindableComponent component, PlayerAttachedEvent args)
+    {
+        _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnPlayerDetached(EntityUid uid, BlindableComponent component, PlayerDetachedEvent args)
+    {
+        _overlayMan.RemoveOverlay(_overlay);
+        _lightManager.Enabled = true;
+    }
+
+    private void OnBlindInit(EntityUid uid, BlindableComponent component, ComponentInit args)
+    {
+        if (_player.LocalPlayer?.ControlledEntity == uid)
+            _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnBlindShutdown(EntityUid uid, BlindableComponent component, ComponentShutdown args)
+    {
+        if (_player.LocalPlayer?.ControlledEntity == uid)
+        {
+            _overlayMan.RemoveOverlay(_overlay);
+        }
+    }
+}