Lua - fix emu.registerbefore() and emu.registerafter()

BizHawk.MultiClient/MainForm.cs

@@ -2317,8 +2317,11 @@ namespace BizHawk.MultiClient
 		/// </summary>
 		public void UpdateToolsBefore()
 		{
-			
+#if WINDOWS
+			LuaConsole1.StartLuaDrawing();
 			LuaConsole1.LuaImp.FrameRegisterBefore();
+			
+#endif
 			NESNameTableViewer1.UpdateValues();
 			NESPPU1.UpdateValues();
 			PCEBGViewer1.UpdateValues();
@@ -2335,18 +2338,24 @@ namespace BizHawk.MultiClient
 		public void UpdateToolsAfter()
 		{
 #if WINDOWS
+			
 			LuaConsole1.ResumeScripts(true);
-			Global.DisplayManager.PreFrameUpdateLuaSource();
+			
 #endif
 			RamWatch1.UpdateValues();
 			RamSearch1.UpdateValues();
 			HexEditor1.UpdateValues();
 			//The other tool updates are earlier, TAStudio needs to be later so it can display the latest
 			//frame of execution in its list view.
-			LuaConsole1.LuaImp.FrameRegisterAfter();
+			
 			TAStudio1.UpdateValues();
 			SNESGraphicsDebugger1.UpdateToolsAfter();
 			TraceLogger1.UpdateValues();
+#if WINDOWS
+			LuaConsole1.LuaImp.FrameRegisterAfter();
+			Global.DisplayManager.PreFrameUpdateLuaSource();
+			LuaConsole1.EndLuaDrawing();
+#endif
 		}
 
 		private unsafe Image MakeScreenshotImage()

BizHawk.MultiClient/tools/LuaConsole.cs

@@ -840,7 +840,10 @@ namespace BizHawk.MultiClient
 		/// <param name="includeFrameWaiters">should frame waiters be waken up? only use this immediately before a frame of emulation</param>
 		public void ResumeScripts(bool includeFrameWaiters)
 		{
-			LuaImp.gui_drawNewEmu();
+			if (LuaImp.luaSurface == null)
+			{
+				LuaImp.gui_drawNewEmu();
+			}
 			for (int i = 0; i < luaList.Count; i++)
 			{
 				try
@@ -872,6 +875,16 @@ namespace BizHawk.MultiClient
 					else MessageBox.Show(ex.ToString());
 				}
 			}
+			//LuaImp.gui_drawFinishEmu();
+		}
+
+		public void StartLuaDrawing()
+		{
+			LuaImp.gui_drawNewEmu();
+		}
+
+		public void EndLuaDrawing()
+		{
 			LuaImp.gui_drawFinishEmu();
 		}