Gamerule Entities, Take 2 (#15765)

Content.Server/StationEvents/Components/PowerGridCheckRuleComponent.cs

@@ -0,0 +1,19 @@
+using System.Threading;
+using Content.Server.StationEvents.Events;
+
+namespace Content.Server.StationEvents.Components;
+
+[RegisterComponent, Access(typeof(PowerGridCheckRule))]
+public sealed class PowerGridCheckRuleComponent : Component
+{
+    public CancellationTokenSource? AnnounceCancelToken;
+
+    public readonly List<EntityUid> Powered = new();
+    public readonly List<EntityUid> Unpowered = new();
+
+    public float SecondsUntilOff = 30.0f;
+
+    public int NumberPerSecond = 0;
+    public float UpdateRate => 1.0f / NumberPerSecond;
+    public float FrameTimeAccumulator = 0.0f;
+}