Emp more effects (#14550)

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

Content.Client/Emp/EmpSystem.cs

@@ -0,0 +1,24 @@
+using Content.Shared.Emp;
+using Robust.Shared.Random;
+
+namespace Content.Client.Emp;
+
+public sealed class EmpSystem : SharedEmpSystem
+{
+    [Dependency] private readonly IRobustRandom _random = default!;
+
+    public override void Update(float frameTime)
+    {
+        base.Update(frameTime);
+
+        var query = EntityQueryEnumerator<EmpDisabledComponent, TransformComponent>();
+        while (query.MoveNext(out var uid, out var comp, out var transform))
+        {
+            if (Timing.CurTime > comp.TargetTime)
+            {
+                comp.TargetTime = Timing.CurTime + _random.NextFloat(0.8f, 1.2f) * TimeSpan.FromSeconds(comp.EffectCooldown);
+                Spawn(EmpDisabledEffectPrototype, transform.Coordinates);
+            }
+        }
+    }
+}