Re-organize all projects (#4166)

Content.Client/Flash/FlashableComponent.cs

@@ -0,0 +1,62 @@
+#nullable enable
+using System;
+using Content.Shared.Flash;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Timing;
+
+namespace Content.Client.Flash
+{
+    [RegisterComponent]
+    public sealed class FlashableComponent : SharedFlashableComponent
+    {
+        private TimeSpan _startTime;
+        private double _duration;
+
+        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
+        {
+            if (curState == null)
+            {
+                return;
+            }
+
+            var playerManager = IoCManager.Resolve<IPlayerManager>();
+            if (playerManager.LocalPlayer != null && playerManager.LocalPlayer.ControlledEntity != Owner)
+            {
+                return;
+            }
+
+            var newState = (FlashComponentState) curState;
+            if (newState.Time == default)
+            {
+                return;
+            }
+
+            // Few things here:
+            // 1. If a shorter duration flash is applied then don't do anything
+            // 2. If the client-side time is later than when the flash should've ended don't do anything
+            var currentTime = IoCManager.Resolve<IGameTiming>().CurTime.TotalSeconds;
+            var newEndTime = newState.Time.TotalSeconds + newState.Duration;
+            var currentEndTime = _startTime.TotalSeconds + _duration;
+
+            if (currentEndTime > newEndTime)
+            {
+                return;
+            }
+
+            if (currentTime > newEndTime)
+            {
+                return;
+            }
+
+            _startTime = newState.Time;
+            _duration = newState.Duration;
+
+            var overlayManager = IoCManager.Resolve<IOverlayManager>();
+            var overlay = overlayManager.GetOverlay<FlashOverlay>();
+            overlay.ReceiveFlash(_duration);
+        }
+    }
+}