Eye damage (#10262)

Content.Client/Eye/Blinding/BlurryVisionSystem.cs

@@ -0,0 +1,61 @@
+using Content.Shared.Eye.Blinding;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Shared.GameStates;
+
+namespace Content.Client.Eye.Blinding;
+
+public sealed class BlurryVisionSystem : EntitySystem
+{
+    [Dependency] private readonly IPlayerManager _player = default!;
+    [Dependency] private readonly IOverlayManager _overlayMan = default!;
+    private BlurryVisionOverlay _overlay = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<BlurryVisionComponent, ComponentInit>(OnBlurryInit);
+        SubscribeLocalEvent<BlurryVisionComponent, ComponentShutdown>(OnBlurryShutdown);
+
+        SubscribeLocalEvent<BlurryVisionComponent, PlayerAttachedEvent>(OnPlayerAttached);
+        SubscribeLocalEvent<BlurryVisionComponent, PlayerDetachedEvent>(OnPlayerDetached);
+
+        SubscribeLocalEvent<BlurryVisionComponent, ComponentHandleState>(OnHandleState);
+
+        _overlay = new();
+    }
+
+    private void OnPlayerAttached(EntityUid uid, BlurryVisionComponent component, PlayerAttachedEvent args)
+    {
+        _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnPlayerDetached(EntityUid uid, BlurryVisionComponent component, PlayerDetachedEvent args)
+    {
+        _overlayMan.RemoveOverlay(_overlay);
+    }
+
+    private void OnBlurryInit(EntityUid uid, BlurryVisionComponent component, ComponentInit args)
+    {
+        if (_player.LocalPlayer?.ControlledEntity == uid)
+            _overlayMan.AddOverlay(_overlay);
+    }
+
+    private void OnBlurryShutdown(EntityUid uid, BlurryVisionComponent component, ComponentShutdown args)
+    {
+        if (_player.LocalPlayer?.ControlledEntity == uid)
+        {
+            _overlayMan.RemoveOverlay(_overlay);
+        }
+    }
+
+    private void OnHandleState(EntityUid uid, BlurryVisionComponent component, ref ComponentHandleState args)
+    {
+        if (args.Current is not BlurryVisionComponentState state)
+            return;
+
+        component.Magnitude = state.Magnitude;
+    }
+}