Add RTC reset, allows game to define on continue

Closes #2273 , thanks @SatoMew !

PKHeX.Core/Saves/SAV2.cs

@@ -663,6 +663,11 @@ private ushort GetResetKey()
             return (ushort)(val + tr);
         }
 
+        /// <summary>
+        /// Sets the "Time Not Set" flag to the RTC Flag list.
+        /// </summary>
+        public void ResetRTC() => Data[Offsets.RTCFlags] |= 0x80;
+
         public void UnlockAllDecorations()
         {
             for (int i = 676; i <= 721; i++)

PKHeX.Core/Saves/Substructures/Gen12/SAV2Offsets.cs

@@ -1,4 +1,6 @@
-namespace PKHeX.Core
+using System;
+
+namespace PKHeX.Core
 {
     internal class SAV2Offsets
     {
@@ -17,6 +19,8 @@ public SAV2Offsets(SAV2 sav)
             EventConst = EventFlag - 0x100;
         }
 
+        public int RTCFlags { get; private set; } = -1;
+
         public int Options { get; }
         public int Trainer1 { get; }
 
@@ -35,7 +39,7 @@ public SAV2Offsets(SAV2 sav)
         public int Gender { get; private set; } = -1;
         public int AccumulatedChecksumEnd { get; private set; } = -1;
         public int OverallChecksumPosition { get; private set; } = -1;
-        public int EventFlag { get; private set; }= -1;
+        public int EventFlag { get; private set; } = -1;
         public int EventConst { get; }
         public int Daycare { get; }
 
@@ -47,6 +51,8 @@ public SAV2Offsets(SAV2 sav)
 
         private void LoadOffsetsInternational(GameVersion Version)
         {
+            RTCFlags = 0x0C60;
+
             DaylightSavings = 0x2042;
             OtherCurrentBox = 0x284C;
             switch (Version)
@@ -99,6 +105,9 @@ private void LoadOffsetsInternational(GameVersion Version)
 
                     EventFlag = 0x2600;
                     break;
+
+                default:
+                    throw new ArgumentException(nameof(Version));
             }
         }
 
@@ -113,6 +122,8 @@ private void LoadOffsetsJapanese(GameVersion Version)
             switch (Version)
             {
                 case GameVersion.GS:
+                    RTCFlags = 0x1000;
+
                     Money = 0x23BC;
                     JohtoBadges = 0x23C5;
                     CurrentBoxIndex = 0x2705;
@@ -134,6 +145,8 @@ private void LoadOffsetsJapanese(GameVersion Version)
                     EventFlag = CurrentBoxIndex - 0x105;
                     break;
                 case GameVersion.C:
+                    RTCFlags = 0x0C80;
+
                     Money = 0x23BE;
                     JohtoBadges = 0x23C7;
                     CurrentBoxIndex = 0x26E2;
@@ -154,6 +167,9 @@ private void LoadOffsetsJapanese(GameVersion Version)
 
                     EventFlag = 0x1800;
                     break;
+
+                default:
+                    throw new ArgumentException(nameof(Version));
             }
         }
 
@@ -161,6 +177,8 @@ private void LoadOffsetsJapanese(GameVersion Version)
 
         private void LoadOffsetsKorean()
         {
+            RTCFlags = 0x1060;
+
             // No Crystal Version
             DaylightSavings = 0x2042;
             OtherCurrentBox = 0x284C;

PKHeX.Core/Util/MessageStrings.cs

@@ -183,6 +183,7 @@ public static class MessageStrings
         public static string MsgSaveGen6FriendSafari { get; set; } = "No editing support for Friend Safari :(";
         public static string MsgSaveGen6FriendSafariCheatDesc { get; set; } = "Unlock all 3 slots for each friend?";
         public static string MsgSaveGen2RTCResetPassword { get; set; } = "RTC Reset Password: {0:00000}";
+        public static string MsgSaveGen2RTCResetBitflag { get; set; } = "Would you like to reset the RTC?";
         public static string MsgSaveJPEGExportFail { get; set; } = "No picture data found in the save file!";
 
         public static string MsgSaveChecksumFailEdited { get; set; } = "Save has been edited. Cannot integrity check.";

PKHeX.WinForms/Controls/SAV Editor/SAVEditor.cs

@@ -636,7 +636,11 @@ private void B_OpenRTCEditor_Click(object sender, EventArgs e)
             switch (SAV.Generation)
             {
                 case 2:
-                    WinFormsUtil.Alert(string.Format(MsgSaveGen2RTCResetPassword, ((SAV2) SAV).ResetKey)); break;
+                    var sav2 = ((SAV2) SAV);
+                    var dr = WinFormsUtil.Prompt(MessageBoxButtons.YesNo, string.Format(MsgSaveGen2RTCResetPassword, sav2.ResetKey), MsgSaveGen2RTCResetBitflag);
+                    if (dr == DialogResult.Yes)
+                        sav2.ResetRTC();
+                    break;
                 case 3:
                     new SAV_RTC3(SAV).ShowDialog(); break;
             }