Re-organize all projects (#4166)

Content.Server/Flash/Components/FlashableComponent.cs

@@ -0,0 +1,50 @@
+using System;
+using Content.Shared.Flash;
+using Content.Shared.Interaction.Helpers;
+using Content.Shared.Physics;
+using Robust.Shared.Audio;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Player;
+using Robust.Shared.Players;
+using Robust.Shared.Timing;
+
+namespace Content.Server.Flash.Components
+{
+    [RegisterComponent]
+    public sealed class FlashableComponent : SharedFlashableComponent
+    {
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+
+        private double _duration;
+        private TimeSpan _lastFlash;
+
+        public void Flash(double duration)
+        {
+            _lastFlash = _gameTiming.CurTime;
+            _duration = duration;
+            Dirty();
+        }
+
+        public override ComponentState GetComponentState(ICommonSession player)
+        {
+            return new FlashComponentState(_duration, _lastFlash);
+        }
+
+        public static void FlashAreaHelper(IEntity source, float range, float duration, string? sound = null)
+        {
+            foreach (var entity in IoCManager.Resolve<IEntityLookup>().GetEntitiesInRange(source.Transform.Coordinates, range))
+            {
+                if (!entity.TryGetComponent(out FlashableComponent? flashable) ||
+                    !source.InRangeUnobstructed(entity, range, CollisionGroup.Opaque)) continue;
+
+                flashable.Flash(duration);
+            }
+
+            if (!string.IsNullOrEmpty(sound))
+            {
+                SoundSystem.Play(Filter.Pvs(source), sound, source.Transform.Coordinates);
+            }
+        }
+    }
+}