Fix blindfold round cleanup bug (#9821)

* Blindness public api

* fix blinding round cleanup bug

Content.Client/Eye/Blinding/BlindingSystem.cs

@@ -3,6 +3,14 @@ using Content.Shared.Eye.Blinding;
 using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
 using Robust.Client.Player;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Content.Shared.Administration;
+using Content.Shared.Administration.Events;
+using Content.Shared.GameTicking;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Network;
 
 namespace Content.Client.Eye.Blinding;
 
@@ -25,6 +33,8 @@ public sealed class BlindingSystem : EntitySystem
         SubscribeLocalEvent<BlindableComponent, PlayerAttachedEvent>(OnPlayerAttached);
         SubscribeLocalEvent<BlindableComponent, PlayerDetachedEvent>(OnPlayerDetached);
 
+        SubscribeNetworkEvent<RoundRestartCleanupEvent>(RoundRestartCleanup);
+
         _overlay = new();
     }
 
@@ -52,4 +62,9 @@ public sealed class BlindingSystem : EntitySystem
             _overlayMan.RemoveOverlay(_overlay);
         }
     }
+
+    private void RoundRestartCleanup(RoundRestartCleanupEvent ev)
+    {
+        _lightManager.Enabled = true;
+    }
 }

Content.Shared/Eye/Blinding/SharedBlindingSystem.cs

@@ -1,6 +1,7 @@
 using Content.Shared.Inventory.Events;
 using Content.Shared.Inventory;
 using Content.Shared.Item;
+using JetBrains.Annotations;
 
 namespace Content.Shared.Eye.Blinding
 {
@@ -24,7 +25,7 @@ namespace Content.Shared.Eye.Blinding
             component.IsActive = true;
             if (!TryComp<BlindableComponent>(args.Equipee, out var blindComp))
                 return;
-            blindComp.Sources++;
+            AdjustBlindSources(args.Equipee, true, blindComp);
         }
 
         private void OnUnequipped(EntityUid uid, BlindfoldComponent component, GotUnequippedEvent args)
@@ -34,7 +35,22 @@ namespace Content.Shared.Eye.Blinding
             component.IsActive = false;
             if (!TryComp<BlindableComponent>(args.Equipee, out var blindComp))
                 return;
-            blindComp.Sources--;
+            AdjustBlindSources(args.Equipee, false, blindComp);
+        }
+
+        [PublicAPI]
+        public void AdjustBlindSources(EntityUid uid, bool Add, BlindableComponent? blindable = null)
+        {
+            if (!Resolve(uid, ref blindable, false))
+                return;
+
+            if (Add)
+            {
+                blindable.Sources++;
+            } else
+            {
+                blindable.Sources--;
+            }
         }
     }
 }