Fixes air sensors not accessing gas mixture on construction + visual fixes (#15224)

Content.Server/Atmos/Monitor/Systems/AtmosMonitoringSystem.cs

@@ -4,16 +4,12 @@ using Content.Server.Atmos.EntitySystems;
 using Content.Server.Atmos.Piping.EntitySystems;
 using Content.Server.Atmos.Piping.Components;
 using Content.Server.DeviceNetwork;
-using Content.Server.DeviceNetwork.Components;
 using Content.Server.DeviceNetwork.Systems;
 using Content.Server.Power.Components;
 using Content.Server.Power.EntitySystems;
 using Content.Shared.Atmos;
 using Content.Shared.Atmos.Monitor;
 using Content.Shared.Tag;
-using Robust.Server.GameObjects;
-using Robust.Shared.Audio;
-using Robust.Shared.Player;
 using Robust.Shared.Prototypes;
 
 namespace Content.Server.Atmos.Monitor.Systems;
@@ -48,6 +44,18 @@ public sealed class AtmosMonitorSystem : EntitySystem
         SubscribeLocalEvent<AtmosMonitorComponent, PowerChangedEvent>(OnPowerChangedEvent);
         SubscribeLocalEvent<AtmosMonitorComponent, BeforePacketSentEvent>(BeforePacketRecv);
         SubscribeLocalEvent<AtmosMonitorComponent, DeviceNetworkPacketEvent>(OnPacketRecv);
+        SubscribeLocalEvent<AtmosMonitorComponent, AtmosDeviceDisabledEvent>(OnAtmosDeviceLeaveAtmosphere);
+        SubscribeLocalEvent<AtmosMonitorComponent, AtmosDeviceEnabledEvent>(OnAtmosDeviceEnterAtmosphere);
+    }
+
+    private void OnAtmosDeviceLeaveAtmosphere(EntityUid uid, AtmosMonitorComponent atmosMonitor, AtmosDeviceDisabledEvent args)
+    {
+        atmosMonitor.TileGas = null;
+    }
+
+    private void OnAtmosDeviceEnterAtmosphere(EntityUid uid, AtmosMonitorComponent atmosMonitor, AtmosDeviceEnabledEvent args)
+    {
+        atmosMonitor.TileGas = _atmosphereSystem.GetContainingMixture(uid, true);
     }
 
     private void OnAtmosMonitorInit(EntityUid uid, AtmosMonitorComponent component, ComponentInit args)
@@ -147,22 +155,12 @@ public sealed class AtmosMonitorSystem : EntitySystem
         if (TryComp<AtmosDeviceComponent>(uid, out var atmosDeviceComponent))
         {
             if (!args.Powered)
-            {
-                if (atmosDeviceComponent.JoinedGrid != null)
             {
                 _atmosDeviceSystem.LeaveAtmosphere(atmosDeviceComponent);
-                    component.TileGas = null;
             }
-            }
+            else
-            else if (args.Powered)
-            {
-                if (atmosDeviceComponent.JoinedGrid == null)
             {
                 _atmosDeviceSystem.JoinAtmosphere(atmosDeviceComponent);
-                    var air = _atmosphereSystem.GetContainingMixture(uid, true);
-                    component.TileGas = air;
-                }
-
                 Alert(uid, component.LastAlarmState);
             }
         }

Resources/Prototypes/Entities/Structures/Specific/Atmospherics/sensor.yml

@@ -62,22 +62,23 @@
         - AirSensor
     - type: AccessReader
       access: [ [ "Atmospherics" ] ]
-    - type: GenericVisualizer
-      visuals:
-        enum.PowerDeviceVisuals.Powered:
-          sensor:
-            True: { state: gsensor1 }
-            False: { state: gsensor0 }
     - type: Construction
       graph: AirSensor
       node: sensor
+    - type: Appearance
     - type: Sprite
       netsync: false
       drawdepth: FloorObjects
       sprite: Structures/Specific/Atmospherics/sensor.rsi
       layers:
         - state: gsensor1
-          map: [ "sensor" ]
+          map: [ "enum.PowerDeviceVisualLayers.Powered" ]
+    - type: GenericVisualizer
+      visuals:
+        enum.PowerDeviceVisuals.Powered:
+          enum.PowerDeviceVisualLayers.Powered:
+            True: { state: gsensor1 }
+            False: { state: gsensor0 }
 
 - type: entity
   parent: BaseItem