Blindness, Narcolepsy, Pacifism, and uncontrollable sneezing (#11489)

* start work

* blindness actually works now

* doc

* doc you too.

* i desire to sneeze my lungs out

* no punchie

* s

Co-authored-by: moonheart08 <moonheart08@users.noreply.github.com>

Content.Shared/Traits/Assorted/PermanentBlindnessSystem.cs

@@ -0,0 +1,41 @@
+using Content.Shared.Examine;
+using Content.Shared.Eye.Blinding;
+using Content.Shared.IdentityManagement;
+using Robust.Shared.Network;
+
+namespace Content.Shared.Traits.Assorted;
+
+/// <summary>
+/// This handles permanent blindness, both the examine and the actual effect.
+/// </summary>
+public sealed class PermanentBlindnessSystem : EntitySystem
+{
+    [Dependency] private readonly INetManager _net = default!;
+    [Dependency] private readonly SharedBlindingSystem _blinding = default!;
+
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<PermanentBlindnessComponent, ComponentStartup>(OnStartup);
+        SubscribeLocalEvent<PermanentBlindnessComponent, ComponentShutdown>(OnShutdown);
+        SubscribeLocalEvent<PermanentBlindnessComponent, ExaminedEvent>(OnExamined);
+    }
+
+    private void OnExamined(EntityUid uid, PermanentBlindnessComponent component, ExaminedEvent args)
+    {
+        if (args.IsInDetailsRange && !_net.IsClient)
+        {
+            args.PushMarkup(Loc.GetString("permanent-blindness-trait-examined", ("target", Identity.Entity(uid, EntityManager))));
+        }
+    }
+
+    private void OnShutdown(EntityUid uid, PermanentBlindnessComponent component, ComponentShutdown args)
+    {
+        _blinding.AdjustBlindSources(uid, false);
+    }
+
+    private void OnStartup(EntityUid uid, PermanentBlindnessComponent component, ComponentStartup args)
+    {
+        _blinding.AdjustBlindSources(uid, true);
+    }
+}