From fe5d1b23131e9612c5df1e2602d15e4bbc0a5f17 Mon Sep 17 00:00:00 2001
From: adelikat <adelikat@users.sf.net>
Date: Fri, 19 Dec 2008 22:11:01 +0000
Subject: [PATCH] Backup savestate is created before a state is loaded

---
 changelog.txt             |  1 +
 src/drivers/win/state.cpp |  3 +--
 src/state.cpp             | 15 +++++++++++++++
 src/state.h               |  1 +
 4 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/changelog.txt b/changelog.txt
index 2bef666f..0e32e2f9 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,4 +1,5 @@
 ---version 2.0.4 yet to be released---
+19-dec-2008 - adelikat - Backup savestate is made before loading a state
 18-dec-2008 - adelikat - win32 - turbo bypasses sound better if muteturbo is checked
 18-dec-2008 - shinydoofy - sdl - fixed compiling errors for SDL due to r1037
 18-dec-2008 - adelikat - win32 - fullscreen mode fixed (both enters and returns to fullscreen just fine)
diff --git a/src/drivers/win/state.cpp b/src/drivers/win/state.cpp
index f9e91b06..9669b71e 100644
--- a/src/drivers/win/state.cpp
+++ b/src/drivers/win/state.cpp
@@ -55,5 +55,4 @@ void FCEUD_LoadStateFrom()
 		// Load save state if a file was selected.
 		FCEUI_LoadState(nameo);
 	}
-}
-
+}
\ No newline at end of file
diff --git a/src/state.cpp b/src/state.cpp
index 61e84ef4..480c299e 100644
--- a/src/state.cpp
+++ b/src/state.cpp
@@ -48,6 +48,8 @@
 #include "zlib.h"
 #include "driver.h"
 
+using namespace std;
+
 static void (*SPreSave)(void);
 static void (*SPostSave)(void);
 
@@ -795,6 +797,7 @@ void FCEUI_LoadState(const char *fname)
 	information expected in newer save states, desynchronization won't occur(at least not
 	from this ;)).
 	*/
+	BackupSaveState();
 
 	if(FCEUSS_Load(fname))
 	{
@@ -836,3 +839,15 @@ void FCEU_DrawSaveStates(uint8 *XBuf)
 	StateShow--;
 }
 
+void BackupSaveState()
+{
+	//Everytime a load state is loaded, this is run prior so that the user has a backup of the previous emulator state
+	string filename;
+	int x;
+	
+	filename = strdup(FCEU_MakeFName(FCEUMKF_STATE,CurrentState,0).c_str());	//Generate normal savestate filename
+	x = filename.find_last_of(".");		//Find last dot
+	filename = filename.substr(0,x);	//Chop off file extension
+	filename.append(".bak");			//add .bak
+}
+
diff --git a/src/state.h b/src/state.h
index c7d640b2..b5b72267 100644
--- a/src/state.h
+++ b/src/state.h
@@ -61,3 +61,4 @@ void AddExState(void *v, uint32 s, int type, char *desc);
 
 void FCEU_DrawSaveStates(uint8 *XBuf);
 
+void BackupSaveState();				//Makes a backupsavestate
\ No newline at end of file