Power cell culling (#8814)

Content.Client/PowerCell/PowerCellSystem.cs

@@ -1,7 +1,38 @@
 using Content.Shared.PowerCell;
 using JetBrains.Annotations;
+using Robust.Client.GameObjects;
 
 namespace Content.Client.PowerCell;
 
 [UsedImplicitly]
-public sealed class PowerCellSystem : SharedPowerCellSystem { }
+public sealed class PowerCellSystem : SharedPowerCellSystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<PowerCellVisualsComponent, AppearanceChangeEvent>(OnPowerCellVisualsChange);
+    }
+
+    private void OnPowerCellVisualsChange(EntityUid uid, PowerCellVisualsComponent component, ref AppearanceChangeEvent args)
+    {
+        if (args.Sprite == null) return;
+
+        if (args.Component.TryGetData(PowerCellVisuals.ChargeLevel, out byte level))
+        {
+            if (level == 0)
+            {
+                args.Sprite.LayerSetVisible(PowerCellVisualLayers.Unshaded, false);
+                return;
+            }
+
+            args.Sprite.LayerSetVisible(PowerCellVisualLayers.Unshaded, true);
+            args.Sprite.LayerSetState(PowerCellVisualLayers.Unshaded, $"o{level}");
+        }
+    }
+
+    private enum PowerCellVisualLayers : byte
+    {
+        Base,
+        Unshaded,
+    }
+}

Content.Client/PowerCell/PowerCellVisualizer.cs

@@ -1,46 +0,0 @@
-using Content.Shared.PowerCell;
-using JetBrains.Annotations;
-using Robust.Client.GameObjects;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
-using Robust.Shared.Serialization.Manager.Attributes;
-
-namespace Content.Client.PowerCell
-{
-    [UsedImplicitly]
-    public sealed class PowerCellVisualizer : AppearanceVisualizer
-    {
-        [DataField("prefix")]
-        private string? _prefix;
-
-        public override void InitializeEntity(EntityUid entity)
-        {
-            base.InitializeEntity(entity);
-
-            var sprite = IoCManager.Resolve<IEntityManager>().GetComponent<ISpriteComponent>(entity);
-
-            if (_prefix != null)
-            {
-                sprite.LayerMapSet(Layers.Charge, sprite.AddLayerState($"{_prefix}_100"));
-                sprite.LayerSetShader(Layers.Charge, "unshaded");
-            }
-        }
-
-        public override void OnChangeData(AppearanceComponent component)
-        {
-            base.OnChangeData(component);
-
-            var sprite = IoCManager.Resolve<IEntityManager>().GetComponent<ISpriteComponent>(component.Owner);
-            if (component.TryGetData(PowerCellVisuals.ChargeLevel, out byte level))
-            {
-                var adjustedLevel = level * 25;
-                sprite.LayerSetState(Layers.Charge, $"{_prefix}_{adjustedLevel}");
-            }
-        }
-
-        private enum Layers : byte
-        {
-            Charge
-        }
-    }
-}

Content.Client/PowerCell/PowerCellVisualsComponent.cs

@@ -0,0 +1,4 @@
+namespace Content.Client.PowerCell;
+
+[RegisterComponent]
+public sealed class PowerCellVisualsComponent : Component {}