From c4c2967065c5a25a7604391b9bcf9e18121f8da2 Mon Sep 17 00:00:00 2001
From: Joonas Rikkonen <poe.regalis@gmail.com>
Date: Thu, 15 Nov 2018 20:52:15 +0200
Subject: [PATCH] Option to make RegEx component only send a signal when it
 receives a signal (not continuously according to the last received signal),
 added FalseOutput property to RegEx component. Closes #846, Closes #911

---
 .../Components/Signal/RegExFindComponent.cs   | 31 ++++++++++++-------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/Barotrauma/BarotraumaShared/Source/Items/Components/Signal/RegExFindComponent.cs b/Barotrauma/BarotraumaShared/Source/Items/Components/Signal/RegExFindComponent.cs
index 262a45d85..81f1b1f53 100644
--- a/Barotrauma/BarotraumaShared/Source/Items/Components/Signal/RegExFindComponent.cs
+++ b/Barotrauma/BarotraumaShared/Source/Items/Components/Signal/RegExFindComponent.cs
@@ -5,23 +5,25 @@ namespace Barotrauma.Items.Components
 {
     class RegExFindComponent : ItemComponent
     {
-        private string output;
-
         private string expression;
 
         private string receivedSignal;
         private string previousReceivedSignal;
 
-        bool previousResult;
+        private bool previousResult;
 
         private Regex regex;
 
+        private bool nonContinuousOutputSent;
+
         [InGameEditable, Serialize("1", true)]
-        public string Output
-        {
-            get { return output; }
-            set { output = value; }
-        }
+        public string Output { get; set; }
+
+        [InGameEditable, Serialize("0", true)]
+        public string FalseOutput { get; set; }
+
+        [Serialize(true, true), InGameEditable(ToolTip = "Should the component keep sending the output even after it stops receiving a signal, or only send an output when it receives a signal.")]
+        public bool ContinuousOutput { get; set; }
 
         [InGameEditable, Serialize("", true)]
         public string Expression
@@ -73,8 +75,15 @@ namespace Barotrauma.Items.Components
                 }
             }
 
-
-            item.SendSignal(0, previousResult ? output : "0", "signal_out", null);
+            if (ContinuousOutput)
+            {
+                item.SendSignal(0, previousResult ? Output : FalseOutput, "signal_out", null);
+            }
+            else if (!nonContinuousOutputSent)
+            {
+                item.SendSignal(0, previousResult ? Output : FalseOutput, "signal_out", null);
+                nonContinuousOutputSent = true;
+            }
         }
 
         public override void ReceiveSignal(int stepsTaken, string signal, Connection connection, Item source, Character sender, float power = 0.0f)
@@ -85,7 +94,7 @@ namespace Barotrauma.Items.Components
                     receivedSignal = signal;
                     break;
                 case "set_output":
-                    output = signal;
+                    Output = signal;
                     break;
             }
         }