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.Server/Traits/Assorted/NarcolepsySystem.cs

@@ -0,0 +1,53 @@
+using Content.Shared.Bed.Sleep;
+using Content.Shared.StatusEffect;
+using Robust.Shared.Random;
+
+namespace Content.Server.Traits.Assorted;
+
+/// <summary>
+/// This handles narcolepsy, causing the affected to fall asleep uncontrollably at a random interval.
+/// </summary>
+public sealed class NarcolepsySystem : EntitySystem
+{
+    private const string StatusEffectKey = "ForcedSleep"; // Same one used by N2O and other sleep chems.
+
+    [Dependency] private readonly StatusEffectsSystem _statusEffects = default!;
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        SubscribeLocalEvent<NarcolepsyComponent, ComponentStartup>(SetupNarcolepsy);
+    }
+
+    private void SetupNarcolepsy(EntityUid uid, NarcolepsyComponent component, ComponentStartup args)
+    {
+        component.NextIncidentTime =
+            _random.NextFloat(component.TimeBetweenIncidents.X, component.TimeBetweenIncidents.Y);
+    }
+
+    public override void Update(float frameTime)
+    {
+        base.Update(frameTime);
+
+        foreach (var narcolepsy in EntityQuery<NarcolepsyComponent>())
+        {
+            narcolepsy.NextIncidentTime -= frameTime;
+
+            if (narcolepsy.NextIncidentTime >= 0)
+                continue;
+
+            // Set the new time.
+            narcolepsy.NextIncidentTime +=
+                _random.NextFloat(narcolepsy.TimeBetweenIncidents.X, narcolepsy.TimeBetweenIncidents.Y);
+
+            var duration = _random.NextFloat(narcolepsy.DurationOfIncident.X, narcolepsy.DurationOfIncident.Y);
+
+            // Make sure the sleep time doesn't cut into the time to next incident.
+            narcolepsy.NextIncidentTime += duration;
+
+            _statusEffects.TryAddStatusEffect<ForcedSleepingComponent>(narcolepsy.Owner, StatusEffectKey,
+                TimeSpan.FromSeconds(duration), false);
+        }
+    }
+}