make MainForm.Rewind.cs into a separate class instead of a partial class of Mainform. Still dependent on the Mainform context so is still a part of the EmuHawk project for now

BizHawk.Client.EmuHawk/BizHawk.Client.EmuHawk.csproj

@@ -383,10 +383,6 @@
       <DependentUpon>MainForm.cs</DependentUpon>
       <SubType>Form</SubType>
     </Compile>
-    <Compile Include="MainForm.Rewind.cs">
-      <DependentUpon>MainForm.cs</DependentUpon>
-      <SubType>Form</SubType>
-    </Compile>
     <Compile Include="movie\EditCommentsForm.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -436,6 +432,7 @@
     </Compile>
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Rewind.cs" />
     <Compile Include="ScanlineSlider.cs">
       <SubType>Form</SubType>
     </Compile>

BizHawk.Client.EmuHawk/GlobalWin.cs

@@ -9,6 +9,7 @@ namespace BizHawk.Client.EmuHawk
 	{
 		public static MainForm MainForm;
 		public static ToolManager Tools;
+		public static Rewinder Rewinder;
 #if WINDOWS
 		public static DirectSound DSound;
 		public static Direct3D Direct3D;

BizHawk.Client.EmuHawk/MainForm.cs

@@ -47,6 +47,7 @@ namespace BizHawk.Client.EmuHawk
 		public MainForm(string[] args)
 		{
 			GlobalWin.MainForm = this;
+			GlobalWin.Rewinder = new Rewinder();
 			Global.ControllerInputCoalescer = new ControllerInputCoalescer();
 			Global.FirmwareManager = new FirmwareManager();
 			Global.MovieSession = new MovieSession
@@ -459,7 +460,6 @@ namespace BizHawk.Client.EmuHawk
 		public bool TurboFastForward = false;
 		public bool RestoreReadWriteOnStop = false;
 		public bool UpdateFrame = false;
-		public bool RewindActive = true;
 		public bool EmulatorPaused { get; private set; }
 
 		#endregion
@@ -2467,12 +2467,13 @@ namespace BizHawk.Client.EmuHawk
 				runFrame = true;
 			}
 
+			// TODO: mostly likely this will need to be whacked, if not then refactor
 			bool ReturnToRecording = Global.MovieSession.Movie.IsRecording;
-			if (RewindActive && (Global.ClientControls["Rewind"] || PressRewind))
+			if (GlobalWin.Rewinder.RewindActive && (Global.ClientControls["Rewind"] || PressRewind))
 			{
-				Rewind(1);
+				GlobalWin.Rewinder.Rewind(1);
 				suppressCaptureRewind = true;
-				if (0 == RewindBuf.Count)
+				if (0 == GlobalWin.Rewinder.RewindBuf.Count)
 				{
 					runFrame = false;
 				}
@@ -2538,7 +2539,7 @@ namespace BizHawk.Client.EmuHawk
 					GlobalWin.OSD.FPS = fps_string;
 				}
 
-				if (!suppressCaptureRewind && RewindActive) CaptureRewindState();
+				if (!suppressCaptureRewind && GlobalWin.Rewinder.RewindActive) GlobalWin.Rewinder.CaptureRewindState();
 
 				if (!_runloopFrameadvance) genSound = true;
 				else if (!Global.Config.MuteFrameAdvance)
@@ -2928,7 +2929,7 @@ namespace BizHawk.Client.EmuHawk
 				}
 
 				Text = DisplayNameForSystem(loader.Game.System) + " - " + loader.Game.Name;
-				ResetRewindBuffer();
+				GlobalWin.Rewinder.ResetRewindBuffer();
 
 				if (Global.Emulator.CoreComm.RomStatusDetails == null && loader.Rom != null)
 				{
@@ -2979,7 +2980,7 @@ namespace BizHawk.Client.EmuHawk
 				UpdateStatusSlots();
 				UpdateDumpIcon();
 
-				CaptureRewindState();
+				GlobalWin.Rewinder.CaptureRewindState();
 
 				Global.StickyXORAdapter.ClearStickies();
 				Global.StickyXORAdapter.ClearStickyFloats();
@@ -3163,7 +3164,7 @@ namespace BizHawk.Client.EmuHawk
 				GlobalWin.Tools.Restart();
 
 				RewireSound();
-				ResetRewindBuffer();
+				GlobalWin.Rewinder.ResetRewindBuffer();
 				Text = "BizHawk" + (VersionInfo.INTERIM ? " (interim) " : String.Empty);
 				HandlePlatformMenus();
 				_stateSlots.Clear();

BizHawk.Client.EmuHawk/Rewind.cs

@@ -8,8 +8,10 @@ using BizHawk.Client.Common;
 
 namespace BizHawk.Client.EmuHawk
 {
-	public partial class MainForm
+	public class Rewinder
 	{
+		public bool RewindActive = true;
+
 		public StreamBlobDatabase RewindBuf;// = new StreamBlobDatabase(Global.Config.Rewind_OnDisk, Global.Config.Rewind_BufferSize * (long)1024 * (long)1024);
 		private RewindThreader RewindThread;
 
@@ -264,9 +266,9 @@ namespace BizHawk.Client.EmuHawk
 			// which will kill N64 for sure...
 			public static bool IsThreaded = false;
 
-			MainForm mf;
+			Rewinder mf;
 
-			public RewindThreader(MainForm mf, bool isThreaded)
+			public RewindThreader(Rewinder mf, bool isThreaded)
 			{
 				IsThreaded = isThreaded;
 				this.mf = mf;
@@ -382,7 +384,8 @@ namespace BizHawk.Client.EmuHawk
 			ConcurrentQueue<Job> Jobs = new ConcurrentQueue<Job>();
 		}
 
-		private void CaptureRewindState()
+		// TOOD: this should not be parameterless?! It is only possible due to passing a static context in
+		public void CaptureRewindState()
 		{
 			if (RewindImpossible)
 				return;

BizHawk.Client.EmuHawk/config/RewindConfig.cs

@@ -19,10 +19,10 @@ namespace BizHawk.Client.EmuHawk
 
 		private void RewindConfig_Load(object sender, EventArgs e)
 		{
-			if (GlobalWin.MainForm.RewindBuf != null)
+			if (GlobalWin.Rewinder.RewindBuf != null)
 			{
-				FullnessLabel.Text = String.Format("{0:0.00}", GlobalWin.MainForm.Rewind_FullnessRatio * 100) + "%";
-				RewindFramesUsedLabel.Text = GlobalWin.MainForm.Rewind_Count.ToString();
+				FullnessLabel.Text = String.Format("{0:0.00}", GlobalWin.Rewinder.Rewind_FullnessRatio * 100) + "%";
+				RewindFramesUsedLabel.Text = GlobalWin.Rewinder.Rewind_Count.ToString();
 			}
 			else
 			{
@@ -127,7 +127,7 @@ namespace BizHawk.Client.EmuHawk
 			Global.Config.RewindEnabledMedium = MediumStateEnabledBox.Checked;
 			Global.Config.RewindEnabledLarge = LargeStateEnabledBox.Checked;
 
-			GlobalWin.MainForm.DoRewindSettings();
+			GlobalWin.Rewinder.DoRewindSettings();
 
 			Global.Config.Rewind_UseDelta = UseDeltaCompression.Checked;
 
@@ -260,9 +260,9 @@ namespace BizHawk.Client.EmuHawk
 			if (UseDeltaCompression.Checked || _stateSize == 0)
 			{
 
-				if (GlobalWin.MainForm.Rewind_Count > 0)
+				if (GlobalWin.Rewinder.Rewind_Count > 0)
 				{
-					avg_state_size = GlobalWin.MainForm.Rewind_Size / GlobalWin.MainForm.Rewind_Count;
+					avg_state_size = GlobalWin.Rewinder.Rewind_Size / GlobalWin.Rewinder.Rewind_Count;
 				}
 				else
 				{

BizHawk.Client.EmuHawk/tools/Lua/Libraries/EmuLuaLibrary.Client.cs

@@ -67,12 +67,12 @@ namespace BizHawk.Client.EmuHawk
 			{
 				if (temp == "0" || temp.ToLower() == "false")
 				{
-					GlobalWin.MainForm.RewindActive = false;
+					GlobalWin.Rewinder.RewindActive = false;
 					GlobalWin.OSD.AddMessage("Rewind suspended");
 				}
 				else
 				{
-					GlobalWin.MainForm.RewindActive = true;
+					GlobalWin.Rewinder.RewindActive = true;
 					GlobalWin.OSD.AddMessage("Rewind enabled");
 				}
 			}