[Fix] Mood system fix (#439)

* mood back

* fix ready

Content.Client/White/Overlays/SaturationScaleOverlay.cs

@@ -0,0 +1,37 @@
+using Robust.Client.Graphics;
+using Robust.Shared.Enums;
+using Robust.Shared.Prototypes;
+
+namespace Content.Client.White.Overlays;
+
+public sealed class SaturationScaleOverlay : Overlay
+{
+    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+
+    public override bool RequestScreenTexture => true;
+    public override OverlaySpace Space => OverlaySpace.WorldSpace;
+    private readonly ShaderInstance _shader;
+    private const float Saturation = 0.5f;
+
+    public SaturationScaleOverlay()
+    {
+        IoCManager.InjectDependencies(this);
+        _shader = _prototypeManager.Index<ShaderPrototype>("SaturationScale").InstanceUnique();
+    }
+
+
+    protected override void Draw(in OverlayDrawArgs args)
+    {
+        if (ScreenTexture == null)
+            return;
+
+        _shader.SetParameter("SCREEN_TEXTURE", ScreenTexture);
+        _shader.SetParameter("saturation", Saturation);
+
+        var handle = args.WorldHandle;
+
+        handle.UseShader(_shader);
+        handle.DrawRect(args.WorldBounds, Color.White);
+        handle.UseShader(null);
+    }
+}

Content.Client/White/Overlays/SaturationScaleSystem.cs

@@ -0,0 +1,61 @@
+using Content.Shared.GameTicking;
+using Content.Shared.White.Overlays;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Shared.Player;
+
+namespace Content.Client.White.Overlays;
+
+public sealed class SaturationScaleSystem : EntitySystem
+{
+    [Dependency] private readonly IPlayerManager _player = default!;
+    [Dependency] private readonly IOverlayManager _overlayMan = default!;
+    [Dependency] private readonly ILightManager _lightManager = default!;
+
+    private SaturationScaleOverlay _overlay = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<SaturationScaleComponent, ComponentInit>(OnInit);
+        SubscribeLocalEvent<SaturationScaleComponent, ComponentShutdown>(OnShutdown);
+
+        SubscribeLocalEvent<SaturationScaleComponent, PlayerAttachedEvent>(OnPlayerAttached);
+        SubscribeLocalEvent<SaturationScaleComponent, PlayerDetachedEvent>(OnPlayerDetached);
+
+        SubscribeNetworkEvent<RoundRestartCleanupEvent>(RoundRestartCleanup);
+
+        _overlay = new();
+    }
+
+    private void RoundRestartCleanup(RoundRestartCleanupEvent ev)
+    {
+        _overlayMan.RemoveOverlay(_overlay);
+    }
+
+    private void OnPlayerDetached(EntityUid uid, SaturationScaleComponent component, PlayerDetachedEvent args)
+    {
+        _overlayMan.RemoveOverlay(_overlay);
+    }
+
+    private void OnPlayerAttached(EntityUid uid, SaturationScaleComponent component, PlayerAttachedEvent args)
+    {
+        _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnShutdown(EntityUid uid, SaturationScaleComponent component, ComponentShutdown args)
+    {
+        if (_player.LocalPlayer?.ControlledEntity == uid)
+        {
+            _overlayMan.RemoveOverlay(_overlay);
+        }
+    }
+
+    private void OnInit(EntityUid uid, SaturationScaleComponent component, ComponentInit args)
+    {
+        if (_player.LocalPlayer?.ControlledEntity == uid)
+            _overlayMan.AddOverlay(_overlay);
+    }
+}