Move WindowComponent to ECS (#6267)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.Server/Window/WindowSystem.cs

@@ -0,0 +1,44 @@
+using Content.Server.Popups;
+using Content.Shared.Audio;
+using Content.Shared.Interaction;
+using Robust.Shared.Audio;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Player;
+using Robust.Shared.Timing;
+
+namespace Content.Server.Window;
+
+public class WindowSystem : EntitySystem
+{
+    [Dependency] private readonly IGameTiming _gameTiming = default!;
+    [Dependency] private readonly PopupSystem _popupSystem = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<WindowComponent, InteractHandEvent>(OnInteractHand);
+    }
+
+    private void OnInteractHand(EntityUid uid, WindowComponent component, InteractHandEvent args)
+    {
+        if (args.Handled)
+            return;
+
+        if (component.KnockDelay.TotalSeconds <= 0)
+            return;
+
+        if (_gameTiming.CurTime < component.LastKnockTime + component.KnockDelay)
+            return;
+
+        SoundSystem.Play(Filter.Pvs(args.Target), component.KnockSound.GetSound(),
+            Transform(args.Target).Coordinates, AudioHelpers.WithVariation(0.05f));
+
+        var msg = Loc.GetString("comp-window-knock");
+        _popupSystem.PopupEntity(msg, uid, Filter.Pvs(uid));
+
+        component.LastKnockTime = _gameTiming.CurTime;
+        args.Handled = true;
+    }
+}