Add haloperidol, potassium iodide (#27454)

* add haloperidol, potassium iodide

* review fixes

* review and tuning

* shader review

* use timespan and AutoPausedField

Content.Client/Drowsiness/DrowsinessSystem.cs

@@ -0,0 +1,53 @@
+using Content.Shared.Drowsiness;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Shared.Player;
+
+namespace Content.Client.Drowsiness;
+
+public sealed class DrowsinessSystem : SharedDrowsinessSystem
+{
+    [Dependency] private readonly IPlayerManager _player = default!;
+    [Dependency] private readonly IOverlayManager _overlayMan = default!;
+
+    private DrowsinessOverlay _overlay = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<DrowsinessComponent, ComponentInit>(OnDrowsinessInit);
+        SubscribeLocalEvent<DrowsinessComponent, ComponentShutdown>(OnDrowsinessShutdown);
+
+        SubscribeLocalEvent<DrowsinessComponent, LocalPlayerAttachedEvent>(OnPlayerAttached);
+        SubscribeLocalEvent<DrowsinessComponent, LocalPlayerDetachedEvent>(OnPlayerDetached);
+
+        _overlay = new();
+    }
+
+    private void OnPlayerAttached(EntityUid uid, DrowsinessComponent component, LocalPlayerAttachedEvent args)
+    {
+        _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnPlayerDetached(EntityUid uid, DrowsinessComponent component, LocalPlayerDetachedEvent args)
+    {
+        _overlay.CurrentPower = 0;
+        _overlayMan.RemoveOverlay(_overlay);
+    }
+
+    private void OnDrowsinessInit(EntityUid uid, DrowsinessComponent component, ComponentInit args)
+    {
+        if (_player.LocalEntity == uid)
+            _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnDrowsinessShutdown(EntityUid uid, DrowsinessComponent component, ComponentShutdown args)
+    {
+        if (_player.LocalEntity == uid)
+        {
+            _overlay.CurrentPower = 0;
+            _overlayMan.RemoveOverlay(_overlay);
+        }
+    }
+}