Makes GasValveComponent ECS.

Content.Server/Atmos/Piping/Binary/EntitySystems/GasValveSystem.cs

@@ -0,0 +1,53 @@
+using Content.Server.Atmos.Piping.Binary.Components;
+using Content.Server.NodeContainer;
+using Content.Server.NodeContainer.Nodes;
+using Content.Shared.ActionBlocker;
+using Content.Shared.Atmos.Piping;
+using Content.Shared.Interaction;
+using Content.Shared.Interaction.Helpers;
+using JetBrains.Annotations;
+using Robust.Server.GameObjects;
+using Robust.Shared.GameObjects;
+
+namespace Content.Server.Atmos.Piping.Binary.EntitySystems
+{
+    [UsedImplicitly]
+    public class GasValveSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            SubscribeLocalEvent<GasValveComponent, ComponentStartup>(OnStartup);
+            SubscribeLocalEvent<GasValveComponent, ActivateInWorldEvent>(OnActivate);
+        }
+
+        private void OnStartup(EntityUid uid, GasValveComponent component, ComponentStartup args)
+        {
+            // We call set in startup so it sets the appearance, node state, etc.
+            Set(uid, component, component.Open);
+        }
+
+        private void OnActivate(EntityUid uid, GasValveComponent component, ActivateInWorldEvent args)
+        {
+            if(args.User.InRangeUnobstructed(args.Target) && Get<ActionBlockerSystem>().CanInteract(args.User))
+                Toggle(uid, component);
+        }
+
+        public void Set(EntityUid uid, GasValveComponent component, bool value)
+        {
+            component.Open = value;
+
+            if (ComponentManager.TryGetComponent(uid, out NodeContainerComponent? nodeContainer)
+                && nodeContainer.TryGetNode(component.PipeName, out PipeNode? pipe))
+            {
+                pipe.ConnectionsEnabled = component.Open;
+            }
+        }
+
+        public void Toggle(EntityUid uid, GasValveComponent component)
+        {
+            Set(uid, component, !component.Open);
+        }
+    }
+}