Radiation pulse ECS (#10641)

Content.Shared/Radiation/Systems/RadiationPulseSystem.cs

@@ -0,0 +1,32 @@
+using Content.Shared.Radiation.Components;
+using Content.Shared.Spawners.Components;
+using Robust.Shared.Timing;
+
+namespace Content.Shared.Radiation.Systems;
+
+public sealed class RadiationPulseSystem : EntitySystem
+{
+    [Dependency] private readonly IGameTiming _timing = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<RadiationPulseComponent, ComponentStartup>(OnStartup);
+    }
+
+    private void OnStartup(EntityUid uid, RadiationPulseComponent component, ComponentStartup args)
+    {
+        component.StartTime = _timing.RealTime;
+
+        // try to get despawn time or keep default duration time
+        if (TryComp<TimedDespawnComponent>(uid, out var despawn))
+        {
+            component.VisualDuration = despawn.Lifetime;
+        }
+        // try to get radiation range or keep default visual range
+        if (TryComp<RadiationSourceComponent>(uid, out var radSource))
+        {
+            component.VisualRange = radSource.Range;
+        }
+    }
+}