new file mode 100644
--- /dev/null
+++ b/scn2k/scn2k_cmd.h
@@ -0,0 +1,117 @@
+#ifndef __SCN2K_CMD_H__
+#define __SCN2K_CMD_H__
+
+#include <vector>
+#include <string>
+#include <map>
+
+#include "scn2k_flags.h"
+
+#define STRHEAP_SIZE 10000
+enum Cmdtype {
+	CMD_NOP, CMD_FLAGS, CMD_JMP, CMD_TEXT, CMD_OTHER, CMD_SYSVAR,
+	CMD_TEXTEND,
+	CMD_SAVECMDGRP, CMD_SAVECMDGRP_START, CMD_SAVECMDGRP_ONCE, CMD_SAVECMD_ONCE, CMD_WAITFRAMEUPDATE,CMD_SAVEPOINT, CMD_ROLLBACKPOINT,
+	CMD_SAVEREQ, CMD_SAVE,
+	CMD_LOADREQ, CMD_LOAD,
+	CMD_MENUREQ,
+	CMD_BACKLOGREQ, CMD_BACKLOGREQ_FWD,
+	CMD_END};
+
+enum SkipMode {
+	SKIP_NO=0, SKIP_TEXT=1, SKIP_GRP_FAST=16, SKIP_GRP_NOEFFEC=32,
+	SKIP_GRP_NODRAW=64, SKIPEND_TEXT=256, SKIPEND_KEY=512, SKIP_IN_MENU=1024
+};
+
+struct CmdSimplified { // Cmd ÊÝžÍÑ
+	int type, cmd1, cmd2, cmd3, cmd4, argc;
+	char* args;
+	void Save(std::string& save);
+	void Load(const char* save, char*& args_buffer);
+	void copy(const CmdSimplified& from, char*& args_buffer);
+};
+
+class SimpleCmd {
+	public:
+		SimpleCmd(int a, int b, int c);
+		SimpleCmd();
+
+		bool operator==(const SimpleCmd& cmd) const;
+		bool operator<(const SimpleCmd& cmd) const;
+
+	public:
+		int cmd1, cmd2, cmd3;
+};
+
+class Cmd : public SimpleCmd{
+	public:
+		Cmdtype cmd_type;
+		int cmd4;
+		int argc;
+		int pos, scn;
+		const char* rawdata;
+		char cmdstr[1024];
+		std::vector<VarInfo> args;
+
+	private:
+		const Flags& flags;
+		bool errorflag;
+		int system_version;
+
+		int GetArgs(const char*& d);
+		int GetArgsSpecial(int normal_args,const char*& d);
+		void GetSelection(const char*& d);
+		int GetSwitch(const char*& d);
+		int GetSimpleSwitch(const char*& d);
+		int GetExpression(const char*& d, struct VarInfo* info = 0);
+		int GetExpressionCond(const char*& d);
+		int GetLeftToken(const char*& d, struct VarInfo& info);
+		int GetString(const char*& d);
+		int CopyString(const char* d);
+		int StrVar(int type, int number);
+		static char strtype[256];
+		static int StrType(const char* d) { return strtype[*(unsigned const char*)d];}
+
+	public:
+		const char* Str(const VarInfo& info) const;
+		int AddStr(char* s);
+
+	private:
+		char strheap[STRHEAP_SIZE];
+		int strend;
+		void SetError(void) { errorflag = true;}
+		void ResetString(void) {
+			strend = 0;
+		}
+
+	public:
+		void GetCmd(Flags& f, const char*& d);
+		void SetSysvar(int n, int v);
+		void SetSysvar(int v) { SetSysvar(TYPE_SYS_SYS, v); }
+		void SetFlagvar(VarInfo info, int v);
+		void SetStrvar(VarInfo info, const std::string& s);
+		bool IsError() { return errorflag;}
+		void clear(void);
+		virtual const char * CmdDescr(int, int, int, int) { return "Not supported"; }
+		Cmd(const Flags& f, int _sys_ver);
+		void read(const CmdSimplified& cmd);
+		void write(CmdSimplified& cmd, char*& args_buffer) const;
+};
+
+class CommandHandler {
+	public:
+		typedef void (CommandHandler::*CmdImpl)(Cmd& cmd);
+		typedef struct {
+			const char* descr;
+			CmdImpl function;
+		} CommandInfo;
+		void RegisterCommand(int cmd1, int cmd2, int cmd3, const char* descr, CmdImpl func);
+		bool Exec(Cmd& cmd);
+		void PrintCmd(Cmd& cmd);
+
+	private:
+		typedef std::map<SimpleCmd, CommandInfo> CommandMap;
+		CommandMap command_map;
+};
+
+#endif