* code function for relocating the savefile.

* don't bitch at the user when trying to load a savestate file that doesn't exist.
* grey out 'load state' items if there is no file.

src/NDSCart.cpp

@@ -36,7 +36,7 @@ namespace NDSCart_SRAM
 u8* SRAM;
 u32 SRAMLength;
 
-char SRAMPath[256];
+char SRAMPath[1024];
 
 void (*WriteFunc)(u8 val, bool islast);
 
@@ -148,8 +148,8 @@ void LoadSave(const char* path)
     Discover_AddrLength = 0x7FFFFFFF;
     Discover_LikelySize = 0;
 
-    strncpy(SRAMPath, path, 255);
+    strncpy(SRAMPath, path, 1023);
-    SRAMPath[255] = '\0';
+    SRAMPath[1023] = '\0';
 
     FILE* f = melon_fopen(path, "rb");
     if (f)
@@ -196,6 +196,22 @@ void LoadSave(const char* path)
     StatusReg = 0x00;
 }
 
+void RelocateSave(const char* path)
+{
+    strncpy(SRAMPath, path, 1023);
+    SRAMPath[1023] = '\0';
+
+    FILE* f = melon_fopen(path, "wb");
+    if (!f)
+    {
+        printf("NDSCart_SRAM::RelocateSave: failed to create new file. fuck\n");
+        return;
+    }
+
+    fwrite(SRAM, SRAMLength, 1, f);
+    fclose(f);
+}
+
 u8 Read()
 {
     return Data;
@@ -1127,6 +1143,12 @@ bool LoadROM(const char* path, const char* sram, bool direct)
     return true;
 }
 
+void RelocateSave(const char* path)
+{
+    // herp derp
+    NDSCart_SRAM::RelocateSave(path);
+}
+
 void ReadROM(u32 addr, u32 len, u32 offset)
 {
     if (!CartInserted) return;

src/NDSCart.h

@@ -45,6 +45,7 @@ void Reset();
 void DoSavestate(Savestate* file);
 
 bool LoadROM(const char* path, const char* sram, bool direct);
+void RelocateSave(const char* path);
 
 void WriteROMCnt(u32 val);
 u32 ReadROMData();

src/libui_sdl/main.cpp

@@ -24,6 +24,7 @@
 #include "libui/ui.h"
 
 #include "../types.h"
+#include "../melon_fopen.h"
 #include "../version.h"
 #include "../Config.h"
 
@@ -58,6 +59,8 @@ uiMenuItem* MenuItem_SaveState;
 uiMenuItem* MenuItem_LoadState;
 uiMenuItem* MenuItem_UndoStateLoad;
 
+uiMenuItem* MenuItem_LoadStateSlot[8];
+
 uiMenuItem* MenuItem_Pause;
 uiMenuItem* MenuItem_Reset;
 uiMenuItem* MenuItem_Stop;
@@ -104,9 +107,19 @@ void SetupScreenRects(int width, int height);
 void SaveState(int slot);
 void LoadState(int slot);
 void UndoStateLoad();
+void GetSavestateName(int slot, char* filename, int len);
 
 
 
+bool FileExists(char* name)
+{
+    FILE* f = melon_fopen(name, "rb");
+    if (!f) return false;
+    fclose(f);
+    return true;
+}
+
+
 void UpdateWindowTitle(void* data)
 {
     uiWindowSetTitle(MainWindow, (const char*)data);
@@ -751,6 +764,14 @@ void Run()
     uiMenuItemEnable(MenuItem_LoadState);
     uiMenuItemEnable(MenuItem_UndoStateLoad);
 
+    for (int i = 0; i < 8; i++)
+    {
+        char ssfile[1024];
+        GetSavestateName(i+1, ssfile, 1024);
+        if (FileExists(ssfile)) uiMenuItemEnable(MenuItem_LoadStateSlot[i]);
+        else                    uiMenuItemDisable(MenuItem_LoadStateSlot[i]);
+    }
+
     uiMenuItemEnable(MenuItem_Pause);
     uiMenuItemEnable(MenuItem_Reset);
     uiMenuItemEnable(MenuItem_Stop);
@@ -867,6 +888,12 @@ void LoadState(int slot)
         uiFreeText(file);
     }
 
+    if (!FileExists(filename))
+    {
+        EmuRunning = prevstatus;
+        return;
+    }
+
     // backup
     Savestate* backup = new Savestate("timewarp.mln", true);
     NDS::DoSavestate(backup);
@@ -926,6 +953,9 @@ void SaveState(int slot)
     {
         NDS::DoSavestate(state);
         delete state;
+
+        if (slot > 0)
+            uiMenuItemEnable(MenuItem_LoadStateSlot[slot-1]);
     }
 
     EmuRunning = prevstatus;
@@ -1216,15 +1246,6 @@ void ApplyNewSettings()
 }
 
 
-bool _fileexists(char* name)
-{
-    FILE* f = fopen(name, "rb");
-    if (!f) return false;
-    fclose(f);
-    return true;
-}
-
-
 int main(int argc, char** argv)
 {
     srand(time(NULL));
@@ -1313,6 +1334,8 @@ int main(int argc, char** argv)
 
             uiMenuItem* ssitem = uiMenuAppendItem(submenu, name);
             uiMenuItemOnClicked(ssitem, OnLoadState, (void*)&kSavestateNum[i]);
+
+            if (i < 8) MenuItem_LoadStateSlot[i] = ssitem;
         }
 
         MenuItem_LoadState = uiMenuAppendSubmenu(menu, submenu);