Device Linking and better linking ui (#13645)

Co-authored-by: AJCM-git <60196617+AJCM-git@users.noreply.github.com>
Co-authored-by: Visne <39844191+Visne@users.noreply.github.com>
Co-authored-by: ElectroJr <leonsfriedrich@gmail.com>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/DeviceLinking/Systems/SignallerSystem.cs

@@ -0,0 +1,49 @@
+using Content.Server.DeviceLinking.Components;
+using Content.Server.Explosion.EntitySystems;
+using Content.Shared.Interaction.Events;
+using Content.Shared.Timing;
+
+namespace Content.Server.DeviceLinking.Systems;
+
+public sealed class SignallerSystem : EntitySystem
+{
+    [Dependency] private readonly DeviceLinkSystem _link = default!;
+    [Dependency] private readonly UseDelaySystem _useDelay = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<SignallerComponent, ComponentInit>(OnInit);
+        SubscribeLocalEvent<SignallerComponent, UseInHandEvent>(OnUseInHand);
+        SubscribeLocalEvent<SignallerComponent, TriggerEvent>(OnTrigger);
+    }
+
+    private void OnInit(EntityUid uid, SignallerComponent component, ComponentInit args)
+    {
+        _link.EnsureSourcePorts(uid, component.Port);
+    }
+
+    private void OnUseInHand(EntityUid uid, SignallerComponent component, UseInHandEvent args)
+    {
+        if (args.Handled)
+            return;
+        _link.InvokePort(uid, component.Port);
+        args.Handled = true;
+    }
+
+    private void OnTrigger(EntityUid uid, SignallerComponent component, TriggerEvent args)
+    {
+        // if on cooldown, do nothing
+        var hasUseDelay = TryComp<UseDelayComponent>(uid, out var useDelay);
+        if (hasUseDelay && _useDelay.ActiveDelay(uid, useDelay))
+            return;
+
+        // set cooldown to prevent clocks
+        if (hasUseDelay)
+            _useDelay.BeginDelay(uid, useDelay);
+
+        _link.InvokePort(uid, component.Port);
+        args.Handled = true;
+    }
+}