Option to make delay component reset (discarding previously received signals) when a new signal is received, fixed delay countdown running even when the game is paused. Closes #435

Barotrauma/BarotraumaShared/Source/Items/Components/Signal/DelayComponent.cs

@@ -10,49 +10,51 @@ namespace Barotrauma.Items.Components
     {
         const int SignalQueueSize = 500;
 
-        //the output is sent if both inputs have received a signal within the timeframe
-        private TimeSpan delay;
-
-        private Queue<Tuple<string, DateTime>> signalQueue;
+        private Queue<Pair<string, float>> signalQueue;
         
-        [InGameEditable, Serialize(1.0f, true)]
+        [InGameEditable(MinValueFloat = 0.0f, MaxValueFloat = 60.0f), Serialize(1.0f, true)]
         public float Delay
         {
-            get { return (float)delay.TotalSeconds; }
-            set
-            {
-                float seconds = MathHelper.Clamp(value, 0.0f, 60.0f);
-
-                delay = new TimeSpan(0,0,0,0, (int)(seconds*1000.0f));
-            }
+            get;
+            set;
         }
-        
+
+        [InGameEditable(ToolTip = "Should the component discard previously received signals when a new one is received."), Serialize(false, true)]
+        public bool ResetWhenSignalReceived
+        {
+            get;
+            set;
+        }
+
         public DelayComponent(Item item, XElement element)
             : base (item, element)
         {
-            signalQueue = new Queue<Tuple<string, DateTime>>();
-
+            signalQueue = new Queue<Pair<string, float>>();
             IsActive = true;
         }
 
         public override void Update(float deltaTime, Camera cam)
         {
-            while (signalQueue.Any() && signalQueue.Peek().Item2 + delay <= DateTime.Now)
+            foreach (var val in signalQueue)
+            {
+                val.Second -= deltaTime;
+            }
+
+            while (signalQueue.Count > 0 && signalQueue.Peek().Second <= 0.0f)
             {
                 var signalOut = signalQueue.Dequeue();
-
-                item.SendSignal(0, signalOut.Item1, "signal_out", null);
+                item.SendSignal(0, signalOut.First, "signal_out", null);
             }
         }
 
-        public override void ReceiveSignal(int stepsTaken, string signal, Connection connection, Item source, Character sender, float power=0.0f)
+        public override void ReceiveSignal(int stepsTaken, string signal, Connection connection, Item source, Character sender, float power = 0.0f)
         {
             switch (connection.Name)
             {
                 case "signal_in":
                     if (signalQueue.Count >= SignalQueueSize) return;
-
-                    signalQueue.Enqueue(new Tuple<string, DateTime>(signal, DateTime.Now));
+                    if (ResetWhenSignalReceived) signalQueue.Clear();
+                    signalQueue.Enqueue(Pair<string, float>.Create(signal, Delay));
                     break;
             }
         }