From 92f8f9982cd94ec35bb0425e74dfdb1915922663 Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@tasvideos.org>
Date: Tue, 5 Nov 2013 19:53:49 +0000
Subject: [PATCH] When adding a cheat, if it already exists, update the
 existing instead of doing nothing!

---
 BizHawk.Client.Common/tools/CheatList.cs      |  5 +++++
 BizHawk.Client.EmuHawk/tools/Cheats/Cheats.cs | 13 ++++++++++---
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/BizHawk.Client.Common/tools/CheatList.cs b/BizHawk.Client.Common/tools/CheatList.cs
index a56c8de21c..4e51233469 100644
--- a/BizHawk.Client.Common/tools/CheatList.cs
+++ b/BizHawk.Client.Common/tools/CheatList.cs
@@ -199,6 +199,11 @@ namespace BizHawk.Client.Common
 			return false;
 		}
 
+		public bool HasCheat(Cheat cheat)
+		{
+			return _cheatList.FirstOrDefault(x => x.Domain == cheat.Domain && x.Address == cheat.Address) != null;
+		}
+
 		public void SaveOnClose()
 		{
 			if (Global.Config.CheatsAutoSaveOnClose)
diff --git a/BizHawk.Client.EmuHawk/tools/Cheats/Cheats.cs b/BizHawk.Client.EmuHawk/tools/Cheats/Cheats.cs
index 01a862384b..69b020e9db 100644
--- a/BizHawk.Client.EmuHawk/tools/Cheats/Cheats.cs
+++ b/BizHawk.Client.EmuHawk/tools/Cheats/Cheats.cs
@@ -222,9 +222,16 @@ namespace BizHawk.Client.EmuHawk
 
 		private void AddCheat()
 		{
-			Global.CheatList.Add(CheatEditor.Cheat);
-			UpdateListView();
-			UpdateMessageLabel();
+			if (Global.CheatList.HasCheat(CheatEditor.Cheat))
+			{
+				EditCheat();
+			}
+			else
+			{
+				Global.CheatList.Add(CheatEditor.Cheat);
+				UpdateListView();
+				UpdateMessageLabel();
+			}
 		}
 
 		private void EditCheat()