From a5cf4f9578ed177d47664a777529c38be3806c99 Mon Sep 17 00:00:00 2001
From: vulppine <vulppine@gmail.com>
Date: Mon, 22 Aug 2022 12:06:30 -0700
Subject: [PATCH] makes monitoralerttypes actually nullable

---
 .../Atmos/Monitor/Components/AtmosAlarmableComponent.cs         | 2 +-
 Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs b/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs
index 1f62b6fd26..95918030c9 100644
--- a/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs
+++ b/Content.Server/Atmos/Monitor/Components/AtmosAlarmableComponent.cs
@@ -49,7 +49,7 @@ namespace Content.Server.Atmos.Monitor.Components
         public HashSet<string> SyncWithTags { get; } = new();
 
         [DataField("monitorAlertTypes")]
-        public HashSet<AtmosMonitorThresholdType> MonitorAlertTypes { get; } = new();
+        public HashSet<AtmosMonitorThresholdType>? MonitorAlertTypes { get; }
 
         /// <summary>
         ///     If this device should receive only. If it can only
diff --git a/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs b/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
index 11272d74fd..ee623251b8 100644
--- a/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
+++ b/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
@@ -83,7 +83,7 @@ namespace Content.Server.Atmos.Monitor.Systems
                         return;
                     }
 
-                    if (args.Data.TryGetValue(AlertTypes, out HashSet<AtmosMonitorThresholdType>? types))
+                    if (args.Data.TryGetValue(AlertTypes, out HashSet<AtmosMonitorThresholdType>? types) && component.MonitorAlertTypes != null)
                     {
                         isValid = types.Any(type => component.MonitorAlertTypes.Contains(type));