Add power sinks (#8020)

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Client/Entry/IgnoredComponents.cs

@@ -348,7 +348,8 @@ namespace Content.Client.Entry
             "HealthAnalyzer",
             "Thirst",
             "CanEscapeInventory",
-            "Wires"
+            "PowerSink",
+            "Wires",
         };
     }
 }

Content.Server/PowerSink/PowerSinkComponent.cs

@@ -0,0 +1,8 @@
+namespace Content.Server.PowerSink
+{
+    /// <summary>
+    /// Absorbs power up to its capacity when anchored then explodes.
+    /// </summary>
+    [RegisterComponent]
+    public sealed class PowerSinkComponent : Component {}
+}

Content.Server/PowerSink/PowerSinkSystem.cs

@@ -0,0 +1,56 @@
+using Content.Server.Explosion.EntitySystems;
+using Content.Server.Power.Components;
+using Content.Shared.Body.Events;
+using Content.Shared.Examine;
+using Robust.Shared.Utility;
+
+namespace Content.Server.PowerSink
+{
+    public sealed class PowerSinkSystem : EntitySystem
+    {
+        [Dependency] private readonly ExplosionSystem _explosionSystem = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            SubscribeLocalEvent<PowerSinkComponent, ExaminedEvent>(OnExamine);
+        }
+
+        private void OnExamine(EntityUid uid, PowerSinkComponent component, ExaminedEvent args)
+        {
+            if (!args.IsInDetailsRange || !TryComp<PowerConsumerComponent>(uid, out var consumer))
+                return;
+
+            var drainAmount = (int) consumer.NetworkLoad.ReceivingPower / 1000;
+            args.PushMarkup(
+                Loc.GetString(
+                    "powersink-examine-drain-amount",
+                    ("amount", drainAmount),
+                    ("markupDrainColor", "orange"))
+            );
+        }
+
+        public override void Update(float frameTime)
+        {
+            var toRemove = new RemQueue<(PowerSinkComponent Sink, BatteryComponent Battery)>();
+
+            // Realistically it's gonna be like <5 per station.
+            foreach (var (comp, networkLoad, battery, xform) in EntityManager.EntityQuery<PowerSinkComponent, PowerConsumerComponent, BatteryComponent, TransformComponent>())
+            {
+                if (!xform.Anchored) continue;
+
+                battery.CurrentCharge += networkLoad.NetworkLoad.ReceivingPower / 1000;
+                if (battery.CurrentCharge < battery.MaxCharge) continue;
+
+                toRemove.Add((comp, battery));
+            }
+
+            foreach (var (comp, battery) in toRemove)
+            {
+                _explosionSystem.QueueExplosion(comp.Owner, "Default", 5 * (battery.MaxCharge / 2500000), 0.5f, 10, canCreateVacuum: false);
+                EntityManager.RemoveComponent(comp.Owner, comp);
+            }
+        }
+    }
+}

Resources/Locale/en-US/powersink/powersink.ftl

@@ -0,0 +1 @@
+powersink-examine-drain-amount = The power sink is draining [color={$markupDrainColor}]{$amount} kW[/color].

Resources/Prototypes/Catalog/uplink_catalog.yml

@@ -255,6 +255,12 @@
   itemId: ClothingBackpackDuffelSyndicateFilledMedical
   price: 5
 
+- type : uplinkListing
+  id: UplinkPowerSink
+  category: Tools
+  itemId: PowerSink
+  price: 5
+
 - type: uplinkListing
   id: UplinkCarpDehydrated
   category: Tools

Resources/Prototypes/Entities/Objects/Power/powersink.yml

@@ -0,0 +1,46 @@
+- type: entity
+  id: PowerSink
+  parent: BaseMachine
+  name: power sink
+  description: Drains immense amounts of electricity from the grid.
+  components:
+    - type: Item
+      size: 150
+    - type: NodeContainer
+      examinable: true
+      nodes:
+        input:
+          !type:CableDeviceNode
+          nodeGroupID: HVPower
+    - type: Transform
+      anchored: true
+    - type: Physics
+    - type: Fixtures
+      fixtures:
+      - shape:
+          !type:PhysShapeAabb
+          bounds: "-0.40,-0.40,0.40,0.40"
+        mass: 15
+        mask:
+        - MachineMask
+        layer:
+        - MachineLayer
+    - type: Destructible
+      thresholds:
+      - trigger:
+          !type:DamageTrigger
+          damage: 25
+        behaviors:
+        - !type:DoActsBehavior
+          acts: [ "Destruction" ]
+    - type: PowerSink
+    - type: Battery
+      maxCharge: 7500000
+    - type: ExaminableBattery
+    - type: PowerConsumer
+      voltage: High
+      drawRate: 1000000
+    - type: Sprite
+      netsync: false
+      sprite: Objects/Power/powersink.rsi
+      state: powersink

Resources/Textures/Objects/Power/powersink.rsi/meta.json

@@ -0,0 +1,14 @@
+{
+  "version": 1,
+  "license": "CC-BY-NC-SA-3.0",
+  "copyright": "Taken from goonstation at commit https://github.com/goonstation/goonstation/commit/17c4392b75abd87a0f740e116c44dd4c7dfff6f7",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "powersink"
+    }
+  ]
+}