add a bunch of code

5 files changed, 284 insertions, 13 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 64d922c..dca0ca9 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -26,6 +26,8 @@ add_library(core STATIC
 	Savestate.cpp
 	SPI.cpp
 	SPU.cpp
+	types.h
+	version.h
 	Wifi.cpp
 	WifiAP.cpp
 )
diff --git a/src/Config.h b/src/Config.h
index 84fd57b..0aeab85 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -19,6 +19,8 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
+#include <stdio.h>
+
 #include "types.h"
 
 namespace Config
diff --git a/src/frontend/FrontendUtil.h b/src/frontend/FrontendUtil.h
index 6a199b7..7e171ce 100644
--- a/src/frontend/FrontendUtil.h
+++ b/src/frontend/FrontendUtil.h
@@ -21,10 +21,44 @@
 
 #include "types.h"
 
-namespace FrontendUtil
+namespace Frontend
 {
 
-//
+enum
+{
+    ROMSlot_NDS = 0,
+    ROMSlot_GBA,
+
+    ROMSlot_MAX
+};
+
+extern char ROMPath [ROMSlot_MAX][1024];
+extern char SRAMPath[ROMSlot_MAX][1024];
+extern bool SavestateLoaded;
+
+
+// initialize the ROM handling utility
+void Init_ROM();
+
+// load a ROM file to the specified cart slot
+// note: loading a ROM to the NDS slot resets emulation
+bool LoadROM(char* file, int slot);
+
+// get the filename associated with the given savestate slot
+void GetSavestateName(int slot, char* filename, int len);
+
+// determine whether the given savestate slot does contain a savestate
+bool SavestateExists(int slot);
+
+// load the given savestate file
+// if successful, emulation will continue from the savestate's point
+bool LoadState(const char* filename);
+
+// save the current emulator state to the given file
+bool SaveState(const char* filename);
+
+// undo the latest savestate load
+void UndoStateLoad();
 
 }
 
diff --git a/src/frontend/Util_ROM.cpp b/src/frontend/Util_ROM.cpp
index b3077f7..574148b 100644
--- a/src/frontend/Util_ROM.cpp
+++ b/src/frontend/Util_ROM.cpp
@@ -15,3 +15,239 @@
     You should have received a copy of the GNU General Public License along
     with melonDS. If not, see http://www.gnu.org/licenses/.
 */
+
+#include <stdio.h>
+#include <string.h>
+
+#include "FrontendUtil.h"
+#include "Config.h"
+#include "qt_sdl/PlatformConfig.h" // FIXME!!!
+#include "Platform.h"
+
+#include "NDS.h"
+#include "GBACart.h"
+
+
+namespace Frontend
+{
+
+char ROMPath     [ROMSlot_MAX][1024];
+char SRAMPath    [ROMSlot_MAX][1024];
+char PrevSRAMPath[ROMSlot_MAX][1024]; // for savestate 'undo load'
+
+bool SavestateLoaded;
+
+
+void Init_ROM()
+{
+    SavestateLoaded = false;
+
+    memset(ROMPath[ROMSlot_NDS], 0, 1024);
+    memset(ROMPath[ROMSlot_GBA], 0, 1024);
+    memset(SRAMPath[ROMSlot_NDS], 0, 1024);
+    memset(SRAMPath[ROMSlot_GBA], 0, 1024);
+    memset(PrevSRAMPath[ROMSlot_NDS], 0, 1024);
+    memset(PrevSRAMPath[ROMSlot_GBA], 0, 1024);
+}
+
+void SetupSRAMPath(int slot)
+{
+    strncpy(SRAMPath[slot], ROMPath[slot], 1023);
+    SRAMPath[slot][1023] = '\0';
+    strncpy(SRAMPath[slot] + strlen(ROMPath[slot]) - 3, "sav", 3);
+}
+
+bool LoadROM(char* file, int slot)
+{
+    char oldpath[1024];
+    char oldsram[1024];
+    strncpy(oldpath, ROMPath[slot], 1024);
+    strncpy(oldsram, SRAMPath[slot], 1024);
+
+    strncpy(ROMPath[slot], file, 1023);
+    ROMPath[slot][1023] = '\0';
+
+    SetupSRAMPath(0);
+    SetupSRAMPath(1);
+
+    if (slot == ROMSlot_NDS && NDS::LoadROM(ROMPath[slot], SRAMPath[slot], Config::DirectBoot))
+    {
+        SavestateLoaded = false;
+
+        // Reload the inserted GBA cartridge (if any)
+        if (ROMPath[ROMSlot_GBA][0] != '\0') NDS::LoadGBAROM(ROMPath[ROMSlot_GBA], SRAMPath[ROMSlot_GBA]);
+
+        strncpy(PrevSRAMPath[slot], SRAMPath[slot], 1024); // safety
+        return true;
+    }
+    else if (slot == ROMSlot_GBA && NDS::LoadGBAROM(ROMPath[slot], SRAMPath[slot]))
+    {
+        SavestateLoaded = false;
+
+        strncpy(PrevSRAMPath[slot], SRAMPath[slot], 1024); // safety
+        return true;
+    }
+    else
+    {
+        strncpy(ROMPath[slot], oldpath, 1024);
+        strncpy(SRAMPath[slot], oldsram, 1024);
+        return false;
+    }
+}
+
+
+// SAVESTATE TODO
+// * configurable paths. not everyone wants their ROM directory to be polluted, I guess.
+
+void GetSavestateName(int slot, char* filename, int len)
+{
+    int pos;
+
+    if (ROMPath[ROMSlot_NDS][0] == '\0') // running firmware, no ROM
+    {
+        strcpy(filename, "firmware");
+        pos = 8;
+    }
+    else
+    {
+        int l = strlen(ROMPath[ROMSlot_NDS]);
+        pos = l;
+        while (ROMPath[ROMSlot_NDS][pos] != '.' && pos > 0) pos--;
+        if (pos == 0) pos = l;
+
+        // avoid buffer overflow. shoddy
+        if (pos > len-5) pos = len-5;
+
+        strncpy(&filename[0], ROMPath[ROMSlot_NDS], pos);
+    }
+    strcpy(&filename[pos], ".ml");
+    filename[pos+3] = '0'+slot;
+    filename[pos+4] = '\0';
+}
+
+bool SavestateExists(int slot)
+{
+    char ssfile[1024];
+    GetSavestateName(slot, ssfile, 1024);
+    return Platform::FileExists(ssfile);
+}
+
+bool LoadState(const char* filename)
+{
+    u32 oldGBACartCRC = GBACart::CartCRC;
+
+    // backup
+    Savestate* backup = new Savestate("timewarp.mln", true);
+    NDS::DoSavestate(backup);
+    delete backup;
+
+    bool failed = false;
+
+    Savestate* state = new Savestate(filename, false);
+    if (state->Error)
+    {
+        delete state;
+
+        //uiMsgBoxError(MainWindow, "Error", "Could not load savestate file.");
+
+        // current state might be crapoed, so restore from sane backup
+        state = new Savestate("timewarp.mln", false);
+        failed = true;
+    }
+
+    NDS::DoSavestate(state);
+    delete state;
+
+    if (!failed)
+    {
+        if (Config::SavestateRelocSRAM && ROMPath[ROMSlot_NDS][0]!='\0')
+        {
+            strncpy(PrevSRAMPath[ROMSlot_NDS], SRAMPath[0], 1024);
+
+            strncpy(SRAMPath[ROMSlot_NDS], filename, 1019);
+            int len = strlen(SRAMPath[ROMSlot_NDS]);
+            strcpy(&SRAMPath[ROMSlot_NDS][len], ".sav");
+            SRAMPath[ROMSlot_NDS][len+4] = '\0';
+
+            NDS::RelocateSave(SRAMPath[ROMSlot_NDS], false);
+        }
+
+        bool loadedPartialGBAROM = false;
+
+        // in case we have a GBA cart inserted, and the GBA ROM changes
+        // due to having loaded a save state, we do not want to reload
+        // the previous cartridge on reset, or commit writes to any
+        // loaded save file. therefore, their paths are "nulled".
+        if (GBACart::CartInserted && GBACart::CartCRC != oldGBACartCRC)
+        {
+            ROMPath[ROMSlot_GBA][0] = '\0';
+            SRAMPath[ROMSlot_GBA][0] = '\0';
+            loadedPartialGBAROM = true;
+        }
+
+        // TODO forward this to user in a meaningful way!!
+        /*char msg[64];
+        if (slot > 0) sprintf(msg, "State loaded from slot %d%s",
+                        slot, loadedPartialGBAROM ? " (GBA ROM header only)" : "");
+        else          sprintf(msg, "State loaded from file%s",
+                        loadedPartialGBAROM ? " (GBA ROM header only)" : "");
+        OSD::AddMessage(0, msg);*/
+
+        SavestateLoaded = true;
+    }
+
+    return !failed;
+}
+
+bool SaveState(const char* filename)
+{
+    Savestate* state = new Savestate(filename, true);
+    if (state->Error)
+    {
+        delete state;
+        return false;
+    }
+    else
+    {
+        NDS::DoSavestate(state);
+        delete state;
+
+        if (Config::SavestateRelocSRAM && ROMPath[ROMSlot_NDS][0]!='\0')
+        {
+            strncpy(SRAMPath[ROMSlot_NDS], filename, 1019);
+            int len = strlen(SRAMPath[ROMSlot_NDS]);
+            strcpy(&SRAMPath[ROMSlot_NDS][len], ".sav");
+            SRAMPath[ROMSlot_NDS][len+4] = '\0';
+
+            NDS::RelocateSave(SRAMPath[ROMSlot_NDS], true);
+        }
+    }
+
+    /*char msg[64];
+    if (slot > 0) sprintf(msg, "State saved to slot %d", slot);
+    else          sprintf(msg, "State saved to file");
+    OSD::AddMessage(0, msg);*/
+    return true;
+}
+
+void UndoStateLoad()
+{
+    if (!SavestateLoaded) return;
+
+    // pray that this works
+    // what do we do if it doesn't???
+    // but it should work.
+    Savestate* backup = new Savestate("timewarp.mln", false);
+    NDS::DoSavestate(backup);
+    delete backup;
+
+    if (ROMPath[ROMSlot_NDS][0]!='\0')
+    {
+        strncpy(SRAMPath[ROMSlot_NDS], PrevSRAMPath[ROMSlot_NDS], 1024);
+        NDS::RelocateSave(SRAMPath[ROMSlot_NDS], false);
+    }
+
+    //OSD::AddMessage(0, "State load undone");
+}
+
+}
diff --git a/src/frontend/qt_sdl/main.cpp b/src/frontend/qt_sdl/main.cpp
index 4999d94..648cd99 100644
--- a/src/frontend/qt_sdl/main.cpp
+++ b/src/frontend/qt_sdl/main.cpp
@@ -49,11 +49,6 @@
 char* EmuDirectory;
 
 bool RunningSomething;
-char ROMPath[2][1024];
-char SRAMPath[2][1024];
-char PrevSRAMPath[2][1024]; // for savestate 'undo load'
-
-bool SavestateLoaded;
 
 MainWindow* mainWindow;
 EmuThread* emuThread;
@@ -334,8 +329,8 @@ void EmuThread::emuPause(bool refresh)
 {
     int status = refresh ? 2:3;
     PrevEmuStatus = EmuRunning;
-    EmuRunning = status;printf("emuPause %d -> %d %d\n", PrevEmuStatus, EmuRunning, EmuStatus);
-    while (EmuStatus != status);printf("wait done\n");
+    EmuRunning = status;
+    while (EmuStatus != status);
 }
 
 void EmuThread::emuUnpause()
@@ -370,7 +365,7 @@ void MainWindowPanel::paintEvent(QPaintEvent* event)
 
 MainWindow::MainWindow(QWidget* parent) : QMainWindow(parent)
 {
-    setWindowTitle("melonDS - assfucking Qt version");
+    setWindowTitle("melonDS " MELONDS_VERSION);
 
     QMenuBar* menubar = new QMenuBar();
     {
@@ -569,6 +564,7 @@ int main(int argc, char** argv)
     emuThread->start();
     emuThread->emuPause(true);
 
+    #if 0
     if (argc > 1)
     {
         char* file = argv[1];
@@ -601,11 +597,12 @@ int main(int argc, char** argv)
             }
         }
     }
+    #endif
 
     int ret = melon.exec();
-printf("melon over\n");
-    emuThread->emuStop();printf("STOP\n");
-    emuThread->wait();printf("farked\n");
+
+    emuThread->emuStop();
+    emuThread->wait();
 
     Config::Save();