Gas pipe sensors (#33128)

* Initial commit

* Monitored pipe node is now referenced by name

* Review changes

* Simplified construction

* Tweaked deconstruction to match other binary atmos devices

* Helper function removal

* Updated attribution

Content.Server/Atmos/Monitor/Components/AtmosMonitorComponent.cs

@@ -48,7 +48,9 @@ public sealed partial class AtmosMonitorComponent : Component
     [DataField("gasThresholds")]
     public Dictionary<Gas, AtmosAlarmThreshold>? GasThresholds;
 
-    // Stores a reference to the gas on the tile this is on.
+    /// <summary>
+    /// Stores a reference to the gas on the tile this entity is on (or the pipe network it monitors; see <see cref="MonitorsPipeNet"/>).
+    /// </summary>
     [ViewVariables]
     public GasMixture? TileGas;
 
@@ -65,4 +67,19 @@ public sealed partial class AtmosMonitorComponent : Component
     /// </summary>
     [DataField("registeredDevices")]
     public HashSet<string> RegisteredDevices = new();
+
+    /// <summary>
+    /// Specifies whether this device monitors its own internal pipe network rather than the surrounding atmosphere.
+    /// </summary>
+    /// <remarks>
+    /// If 'true', the entity will require a NodeContainerComponent with one or more PipeNodes to function.
+    /// </remarks>
+    [DataField]
+    public bool MonitorsPipeNet = false;
+
+    /// <summary>
+    /// Specifies the name of the pipe node that this device is monitoring.
+    /// </summary>
+    [DataField]
+    public string NodeNameMonitoredPipe = "monitored";
 }

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

@@ -4,6 +4,9 @@ using Content.Server.Atmos.Piping.Components;
 using Content.Server.Atmos.Piping.EntitySystems;
 using Content.Server.DeviceNetwork;
 using Content.Server.DeviceNetwork.Systems;
+using Content.Server.NodeContainer;
+using Content.Server.NodeContainer.EntitySystems;
+using Content.Server.NodeContainer.Nodes;
 using Content.Server.Power.Components;
 using Content.Server.Power.EntitySystems;
 using Content.Shared.Atmos;
@@ -25,6 +28,7 @@ public sealed class AtmosMonitorSystem : EntitySystem
     [Dependency] private readonly AtmosDeviceSystem _atmosDeviceSystem = default!;
     [Dependency] private readonly DeviceNetworkSystem _deviceNetSystem = default!;
     [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
+    [Dependency] private readonly NodeContainerSystem _nodeContainerSystem = default!;
 
     // Commands
     public const string AtmosMonitorSetThresholdCmd = "atmos_monitor_set_threshold";
@@ -56,8 +60,15 @@ public sealed class AtmosMonitorSystem : EntitySystem
 
     private void OnAtmosDeviceEnterAtmosphere(EntityUid uid, AtmosMonitorComponent atmosMonitor, ref AtmosDeviceEnabledEvent args)
     {
+        if (atmosMonitor.MonitorsPipeNet && _nodeContainerSystem.TryGetNode<PipeNode>(uid, atmosMonitor.NodeNameMonitoredPipe, out var pipeNode))
+        {
+            atmosMonitor.TileGas = pipeNode.Air;
+            return;
+        }
+
         atmosMonitor.TileGas = _atmosphereSystem.GetContainingMixture(uid, true);
     }
+
     private void OnMapInit(EntityUid uid, AtmosMonitorComponent component, MapInitEvent args)
     {
         if (component.TemperatureThresholdId != null)
@@ -215,6 +226,10 @@ public sealed class AtmosMonitorSystem : EntitySystem
             && component.GasThresholds == null)
             return;
 
+        // If monitoring a pipe network, get its most recent gas mixture
+        if (component.MonitorsPipeNet && _nodeContainerSystem.TryGetNode<PipeNode>(uid, component.NodeNameMonitoredPipe, out var pipeNode))
+            component.TileGas = pipeNode.Air;
+
         UpdateState(uid, component.TileGas, component);
     }
 

Resources/Locale/en-US/atmos/gas-pipe-sensor.ftl

@@ -0,0 +1,5 @@
+gas-pipe-sensor-distribution-loop = Distribution loop
+gas-pipe-sensor-waste-loop = Waste loop
+gas-pipe-sensor-mixed-air = Mixed air
+gas-pipe-sensor-teg-hot-loop = TEG hot loop
+gas-pipe-sensor-teg-cold-loop = TEG cold loop

Resources/Prototypes/Entities/Structures/Piping/Atmospherics/gas_pipe_sensor.yml

@@ -0,0 +1,84 @@
+- type: entity
+  parent: [AirSensorBase, GasPipeBase]
+  id: GasPipeSensor
+  name: gas pipe sensor
+  description: Reports on the status of the gas in the attached pipe network. 
+  placement:
+    mode: SnapgridCenter
+  components:
+  - type: Sprite
+    sprite: Structures/Piping/Atmospherics/gas_pipe_sensor.rsi
+    drawdepth: BelowFloor
+    layers:
+    - sprite: Structures/Piping/Atmospherics/pipe.rsi
+      map: [ "enum.PipeVisualLayers.Pipe" ]
+      state: pipeStraight
+    - map: ["base"]
+      state: base
+    - map: [ "enum.PowerDeviceVisualLayers.Powered" ]
+      state: lights 
+      shader: unshaded      
+  - type: Appearance
+  - type: GenericVisualizer
+    visuals:
+      enum.PowerDeviceVisuals.Powered:
+        enum.PowerDeviceVisualLayers.Powered:
+          False: { state: blank }
+          True: { state: lights }
+  - type: AtmosMonitor
+    monitorsPipeNet: true
+  - type: ApcPowerReceiver
+  - type: ExtensionCableReceiver
+  - type: Construction
+    graph: GasPipeSensor
+    node: sensor 
+  - type: NodeContainer
+    nodes:
+      monitored:
+        !type:PipeNode
+        nodeGroupID: Pipe
+        pipeDirection: Longitudinal
+  - type: Tag
+    tags:
+    - AirSensor
+    - Unstackable    
+
+- type: entity
+  parent: GasPipeSensor 
+  id: GasPipeSensorDistribution 
+  suffix: Distribution
+  components:
+  - type: Label
+    currentLabel: gas-pipe-sensor-distribution-loop
+
+- type: entity
+  parent: GasPipeSensor 
+  id: GasPipeSensorWaste  
+  suffix: Waste
+  components:
+  - type: Label
+    currentLabel: gas-pipe-sensor-waste-loop
+
+- type: entity
+  parent: GasPipeSensor 
+  id: GasPipeSensorMixedAir 
+  suffix: Mixed air
+  components:
+  - type: Label
+    currentLabel: gas-pipe-sensor-mixed-air
+
+- type: entity
+  parent: GasPipeSensor 
+  id: GasPipeSensorTEGHot
+  suffix: TEG hot
+  components:
+  - type: Label
+    currentLabel: gas-pipe-sensor-teg-hot-loop
+
+- type: entity
+  parent: GasPipeSensor  
+  id: GasPipeSensorTEGCold
+  suffix: TEG cold
+  components:
+  - type: Label
+    currentLabel: gas-pipe-sensor-teg-cold-loop

Resources/Prototypes/Recipes/Construction/Graphs/utilities/gas_pipe_sensor.yml

@@ -0,0 +1,29 @@
+- type: constructionGraph
+  id: GasPipeSensor
+  start: start
+  graph:
+  - node: start
+    edges:
+    - to: sensor
+      steps:
+      - material: Steel
+        amount: 2
+        doAfter: 1
+
+  - node: sensor   
+    entity: GasPipeSensor
+    actions:
+    - !type:SetAnchor
+    edges:
+    - to: start
+      completed:
+      - !type:SpawnPrototype
+        prototype: SheetSteel1
+        amount: 2
+      - !type:DeleteEntity
+      conditions:
+      - !type:EntityAnchored
+        anchored: false
+      steps:
+      - tool: Welding
+        doAfter: 1

Resources/Prototypes/Recipes/Construction/utilities.yml

@@ -366,6 +366,21 @@
   objectType: Structure
   canRotate: true
 
+- type: construction
+  name: gas pipe sensor
+  id: GasPipeSensor
+  graph: GasPipeSensor
+  startNode: start
+  targetNode: sensor
+  category: construction-category-structures
+  description: Reports on the status of the gas within the attached pipe network. 
+  icon:
+    sprite: Structures/Piping/Atmospherics/gas_pipe_sensor.rsi
+    state: icon
+  placementMode: SnapgridCenter
+  objectType: Structure
+  canRotate: true
+
 # ATMOS PIPES
 - type: construction
   name: gas pipe half

Resources/Textures/Structures/Piping/Atmospherics/gas_pipe_sensor.rsi/meta.json

@@ -0,0 +1,29 @@
+{
+    "version": 1,
+    "license": "CC-BY-SA-3.0",
+    "copyright": "Created by chromiumboy (github) for SS14, based on the digital valve from /tg/, taken from https://github.com/tgstation/tgstation at commit 57cd1d59ca019dd0e7811ac451f295f818e573da.",
+    "size": {
+        "x": 32,
+        "y": 32
+    },
+    "states": [
+        {
+            "name": "icon"
+        },
+	{
+            "name": "base"
+        },
+	{
+            "name": "blank"
+        },
+        {
+            "name": "lights",
+            "delays": [
+                [
+                    1.0,
+                    0.25
+                ]
+            ]
+        }
+    ]
+}