From 8d1829335efe2a48347f73fb5e51ecd3aa561abc Mon Sep 17 00:00:00 2001
From: Krunklehorn <42424291+Krunklehorn@users.noreply.github.com>
Date: Tue, 11 Aug 2026 00:55:02 -0400
Subject: [PATCH] Power outages are shorter and only affect the main (largest)
 grid (#37841)

* Cancel if APC is in unpowered list

* Also prevent re-power via re-construction

* Revert useless dependency

* Reduced event time by 10-20 seconds

* Move to ApcSystem

* Also verify game rule is active

* Empty commit

* Move station and affected checking

* Check for main station grid

* Fix format warnings

* Somehow this got duplicated

* Make GetRuleAffectingEntity() also check for BecomesStationComponent

* Make APCSystem also check for ActivegameRuleComponent

* Removed redundant checks and duplicate logic

* Add GridEventEligibleComponent with flag for PowerGridChecks

* Propagate GridEventEligibleComponent.

* Revert GridEventEligible

* Use GetLargestGrid
---
 .../Power/EntitySystems/ApcSystem.cs          |  2 +-
 .../Events/PowerGridCheckRule.cs              | 42 +++++++++++++++----
 Resources/Prototypes/GameRules/events.yml     |  4 +-
 3 files changed, 36 insertions(+), 12 deletions(-)

diff --git a/Content.Server/Power/EntitySystems/ApcSystem.cs b/Content.Server/Power/EntitySystems/ApcSystem.cs
index 8b7598340b..640db0ea89 100644
--- a/Content.Server/Power/EntitySystems/ApcSystem.cs
+++ b/Content.Server/Power/EntitySystems/ApcSystem.cs
@@ -91,7 +91,7 @@ public sealed partial class ApcSystem : EntitySystem
         component.NeedStateUpdate = true;
     }
 
-    private static void OnApcStartup(EntityUid uid, ApcComponent component, ComponentStartup args)
+    private void OnApcStartup(EntityUid uid, ApcComponent component, ref ComponentStartup args)
     {
         // We cannot update immediately, as various network/battery state is not valid yet.
         // Defer until the next tick.
diff --git a/Content.Server/StationEvents/Events/PowerGridCheckRule.cs b/Content.Server/StationEvents/Events/PowerGridCheckRule.cs
index 137900bb97..95620ca707 100644
--- a/Content.Server/StationEvents/Events/PowerGridCheckRule.cs
+++ b/Content.Server/StationEvents/Events/PowerGridCheckRule.cs
@@ -1,8 +1,10 @@
 using System.Threading;
 using Content.Server.Power.Components;
 using Content.Server.Power.EntitySystems;
+using Content.Server.Station.Components;
 using Content.Server.StationEvents.Components;
 using Content.Shared.GameTicking.Components;
+using Content.Shared.Station;
 using Content.Shared.Station.Components;
 using JetBrains.Annotations;
 using Robust.Shared.Audio;
@@ -17,6 +19,7 @@ namespace Content.Server.StationEvents.Events
     public sealed partial class PowerGridCheckRule : StationEventSystem<PowerGridCheckRuleComponent>
     {
         [Dependency] private ApcSystem _apcSystem = default!;
+        [Dependency] private SharedStationSystem _stationSystem = default!;
 
         public override void Initialize()
         {
@@ -34,11 +37,24 @@ namespace Content.Server.StationEvents.Events
 
             component.AffectedStation = chosenStation.Value;
 
+            var largestGrid = _stationSystem.GetLargestGrid(chosenStation.Value);
+
+            if (largestGrid == null)
+                return;
+
             var query = AllEntityQuery<ApcComponent, TransformComponent>();
-            while (query.MoveNext(out var apcUid ,out var apc, out var transform))
+            while (query.MoveNext(out var apcUid, out var apc, out var transform))
             {
-                if (apc.MainBreakerEnabled && CompOrNull<StationMemberComponent>(transform.GridUid)?.Station == chosenStation)
-                    component.Powered.Add(apcUid);
+                if (!apc.MainBreakerEnabled)
+                    continue;
+
+                if (CompOrNull<StationMemberComponent>(transform.GridUid)?.Station != chosenStation)
+                    continue;
+
+                if (transform.GridUid != largestGrid.Value)
+                    continue;
+
+                component.Powered.Add(apcUid);
             }
 
             RobustRandom.Shuffle(component.Powered);
@@ -89,10 +105,18 @@ namespace Content.Server.StationEvents.Events
             var activeRules = AllEntityQuery<PowerGridCheckRuleComponent, ActiveGameRuleComponent>();
             while (activeRules.MoveNext(out var _entity, out var powerGridRule, out var _activeGameRule))
             {
-                if (stationMemberComp.Station == powerGridRule.AffectedStation)
-                {
-                    return powerGridRule;
-                }
+                if (stationMemberComp.Station != powerGridRule.AffectedStation)
+                    continue;
+
+                var largestGrid = _stationSystem.GetLargestGrid(powerGridRule.AffectedStation);
+
+                if (largestGrid == null)
+                    continue;
+
+                if (xform.GridUid != largestGrid.Value)
+                    continue;
+
+                return powerGridRule;
             }
 
             return null;
@@ -109,7 +133,7 @@ namespace Content.Server.StationEvents.Events
 
                 if (TryComp(entity, out ApcComponent? apcComponent))
                 {
-                    if(!apcComponent.MainBreakerEnabled)
+                    if (!apcComponent.MainBreakerEnabled)
                         _apcSystem.ApcToggleBreaker(entity, apcComponent);
                 }
             }
@@ -132,7 +156,7 @@ namespace Content.Server.StationEvents.Events
             component.FrameTimeAccumulator += frameTime;
             if (component.FrameTimeAccumulator > component.UpdateRate)
             {
-                updates = (int) (component.FrameTimeAccumulator / component.UpdateRate);
+                updates = (int)(component.FrameTimeAccumulator / component.UpdateRate);
                 component.FrameTimeAccumulator -= component.UpdateRate * updates;
             }
 
diff --git a/Resources/Prototypes/GameRules/events.yml b/Resources/Prototypes/GameRules/events.yml
index 00130e0d4c..8492ada023 100644
--- a/Resources/Prototypes/GameRules/events.yml
+++ b/Resources/Prototypes/GameRules/events.yml
@@ -347,8 +347,8 @@
       path: /Audio/Announcements/power_off.ogg
       params:
         volume: -4
-    duration: 60
-    maxDuration: 120
+    duration: 50
+    maxDuration: 100
   - type: PowerGridCheckRule
 
 - type: entity