Reduced AI static overlay checkbox for photosensitivity (#44003)

* option to reduce ai static overlay

* wrong file path!

* requested change

Content.Client/Options/UI/Tabs/AccessibilityTab.xaml

@@ -7,6 +7,7 @@
                 <Label Text="{Loc 'ui-options-accessability-header-visuals'}"
                        StyleClasses="LabelKeyText"/>
                 <CheckBox Name="ReducedMotionCheckBox" Text="{Loc 'ui-options-reduced-motion'}" />
+                <CheckBox Name="DisableAiStaticCheckBox" Text="{Loc 'ui-options-disable-ai-static'}" />
                 <CheckBox Name="EnableColorNameCheckBox" Text="{Loc 'ui-options-enable-color-name'}" />
                 <CheckBox Name="ColorblindFriendlyCheckBox" Text="{Loc 'ui-options-colorblind-friendly'}" />
                 <ui:OptionSlider Name="ScreenShakeIntensitySlider" Title="{Loc 'ui-options-screen-shake-intensity'}" />

Content.Client/Options/UI/Tabs/AccessibilityTab.xaml.cs

@@ -15,6 +15,7 @@ public sealed partial class AccessibilityTab : Control
         Control.AddOptionCheckBox(CCVars.ChatEnableColorName, EnableColorNameCheckBox);
         Control.AddOptionCheckBox(CCVars.AccessibilityColorblindFriendly, ColorblindFriendlyCheckBox);
         Control.AddOptionCheckBox(CCVars.ReducedMotion, ReducedMotionCheckBox);
+        Control.AddOptionCheckBox(CCVars.DisableAiStatic, DisableAiStaticCheckBox);
         Control.AddOptionPercentSlider(CCVars.ScreenShakeIntensity, ScreenShakeIntensitySlider);
         Control.AddOptionPercentSlider(CCVars.ChatWindowOpacity, ChatWindowOpacitySlider);
         Control.AddOptionPercentSlider(CCVars.SpeechBubbleTextOpacity, SpeechBubbleTextOpacitySlider);

Content.Client/Silicons/StationAi/StationAiOverlay.cs

@@ -1,8 +1,10 @@
 using System.Numerics;
 using Content.Client.Graphics;
+using Content.Shared.CCVar;
 using Content.Shared.Silicons.StationAi;
 using Robust.Client.Graphics;
 using Robust.Client.Player;
+using Robust.Shared.Configuration;
 using Robust.Shared.Enums;
 using Robust.Shared.Map.Components;
 using Robust.Shared.Physics;
@@ -14,10 +16,12 @@ namespace Content.Client.Silicons.StationAi;
 public sealed partial class StationAiOverlay : Overlay
 {
     private static readonly ProtoId<ShaderPrototype> CameraStaticShader = "CameraStatic";
+    private static readonly ProtoId<ShaderPrototype> CameraStaticAccessibleShader = "CameraStaticAccessible";
     private static readonly ProtoId<ShaderPrototype> StencilMaskShader = "StencilMask";
     private static readonly ProtoId<ShaderPrototype> StencilDrawShader = "StencilDraw";
 
     [Dependency] private IClyde _clyde = default!;
+    [Dependency] private IConfigurationManager _cfg = default!;
     [Dependency] private IEntityManager _entManager = default!;
     [Dependency] private IGameTiming _timing = default!;
     [Dependency] private IPlayerManager _player = default!;
@@ -29,12 +33,20 @@ public sealed partial class StationAiOverlay : Overlay
 
     private readonly OverlayResourceCache<CachedResources> _resources = new();
 
+    private ProtoId<ShaderPrototype> _activeShader = CameraStaticShader;
     private float _updateRate = 1f / 30f;
     private float _accumulator;
 
     public StationAiOverlay()
     {
         IoCManager.InjectDependencies(this);
+        _cfg.OnValueChanged(CCVars.DisableAiStatic, OnAiStaticChanged, invokeImmediately: true);
+
+    }
+
+    private void OnAiStaticChanged(bool toggle)
+    {
+        _activeShader = toggle ? CameraStaticAccessibleShader : CameraStaticShader;
     }
 
     protected override void Draw(in OverlayDrawArgs args)
@@ -97,7 +109,7 @@ public sealed partial class StationAiOverlay : Overlay
             () =>
             {
                 worldHandle.SetTransform(invMatrix);
-                var shader = _proto.Index(CameraStaticShader).Instance();
+                var shader = _proto.Index(_activeShader).Instance();
                 worldHandle.UseShader(shader);
                 worldHandle.DrawRect(worldBounds, Color.White);
             },

Content.Shared/CCVar/CCVars.Accessibility.cs

@@ -19,6 +19,13 @@ public sealed partial class CCVars
     public static readonly CVarDef<bool> ReducedMotion =
         CVarDef.Create("accessibility.reduced_motion", false, CVar.CLIENTONLY | CVar.ARCHIVE);
 
+    /// <summary>
+    ///     Replaces the AI static camera effect with a plain gradient.
+    ///     Used for photosensitivity triggers.
+    /// </summary>
+    public static readonly CVarDef<bool> DisableAiStatic =
+        CVarDef.Create("accessibility.disable_ai_static", false, CVar.CLIENTONLY | CVar.ARCHIVE);
+
     public static readonly CVarDef<bool> ChatEnableColorName =
         CVarDef.Create("accessibility.enable_color_name",
             true,

Resources/Locale/en-US/escape-menu/ui/options-menu.ftl

@@ -366,6 +366,7 @@ ui-options-accessability-header-content = Content
 ui-options-enable-color-name = Add colors to character names
 ui-options-colorblind-friendly = Colorblind friendly mode
 ui-options-reduced-motion = Reduce motion of visual effects
+ui-options-disable-ai-static = Disable the static effect on the AI camera overlay
 ui-options-screen-shake-intensity = Screen shake intensity
 
 ui-options-chat-window-opacity = Chat window opacity

Resources/Prototypes/Shaders/shaders.yml

@@ -58,6 +58,11 @@
   kind: source
   path: "/Textures/Shaders/camera_static.swsl"
 
+- type: shader
+  id: CameraStaticAccessible
+  kind: source
+  path: "/Textures/Shaders/camera_static_accessible.swsl"
+
 - type: shader
   id: Drunk
   kind: source
@@ -115,7 +120,7 @@
   id: Hologram
   kind: source
   path: "/Textures/Shaders/hologram.swsl"
-  
+
 - type: shader
   id: HeatBlur
   kind: source

Resources/Textures/Shaders/camera_static_accessible.swsl

@@ -0,0 +1,6 @@
+void fragment() {
+    highp vec2 coords = FRAGCOORD.xy;
+    highp vec2 value = vec2(coords * SCREEN_PIXEL_SIZE);
+    highp vec3 color = vec3(0.0,value.x/3.0,value.x/2.0);
+    COLOR = vec4(0.1 * color,1.0);
+}