Start implementing retro_cheat_set/retro_cheat_reset

libgambatte/include/gambatte.h

@@ -113,6 +113,8 @@ public:
     */
    void setGameShark(const std::string &codes);
 
+   void clearCheats();
+
 private:
 	struct Priv;
 	Priv *const p_;

libgambatte/libretro/libretro.cpp

@@ -188,8 +188,19 @@ bool retro_unserialize(const void *data, size_t size)
    return true;
 }
 
-void retro_cheat_reset() {}
-void retro_cheat_set(unsigned, bool, const char *) {}
+void retro_cheat_reset()
+{
+   gb.clearCheats();
+}
+
+void retro_cheat_set(unsigned index, bool enabled, const char *code)
+{
+   std::string s = code;
+   if (s.find("-") != std::string::npos)
+      gb.setGameGenie(code);
+   else
+      gb.setGameShark(code);
+}
 
    
 static std::string basename(std::string filename)

libgambatte/src/cpu.h

@@ -91,6 +91,7 @@ public:
 
    void setGameGenie(const std::string &codes) { memory.setGameGenie(codes); }
    void setGameShark(const std::string &codes) { memory.setGameShark(codes); }
+   void clearCheats() { memory.clearCheats(); }
 	
 	void display_setColorCorrection(bool enable) { memory.display_setColorCorrection(enable); }
 	video_pixel_t display_gbcToRgb32(const unsigned bgr15) { return memory.display_gbcToRgb32(bgr15); }

libgambatte/src/gambatte-memory.h

@@ -146,6 +146,7 @@ public:
 	
 	void setDmgPaletteColor(unsigned palNum, unsigned colorNum, unsigned long rgb32);
    void setGameGenie(const std::string &codes) { cart.setGameGenie(codes); }
+   void clearCheats() { cart.clearCheats(); }
    void setGameShark(const std::string &codes) { interrupter.setGameShark(codes); }
 	
 	void display_setColorCorrection(bool enable) { display.setColorCorrection(enable); }

libgambatte/src/gambatte.cpp

@@ -139,5 +139,9 @@ void GB::setGameShark(const std::string &codes) {
  p_->cpu.setGameShark(codes);
 }
 
+void GB::clearCheats() {
+ p_->cpu.clearCheats();
+}
+
 }
 

libgambatte/src/mem/cartridge.cpp

@@ -418,6 +418,10 @@ void Cartridge::applyGameGenie(const std::string &code) {
  }
 }
 
+void Cartridge::clearCheats() {
+ ggUndoList.clear();
+}
+
 void Cartridge::setGameGenie(const std::string &codes) {
  //if (loaded()) {
  for (std::vector<AddrData>::reverse_iterator it = ggUndoList.rbegin(), end = ggUndoList.rend(); it != end; ++it) {

libgambatte/src/mem/cartridge.h

@@ -103,6 +103,7 @@ public:
 	void setSaveDir(const std::string &dir);
 	bool loadROM(const void *romdata, unsigned romsize, bool forceDmg, bool multicartCompat);
    void setGameGenie(const std::string &codes);
+   void clearCheats();
 
    void *savedata_ptr()
    {