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diff --git a/engines/m4/m4.h b/engines/m4/m4.h
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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#ifndef M4_H
+#define M4_H
+
+#include "common/scummsys.h"
+#include "common/util.h"
+
+#include "engines/engine.h"
+
+#include "m4/globals.h"
+#include "m4/graphics.h"
+#include "m4/resource.h"
+#include "m4/saveload.h"
+#include "m4/viewmgr.h"
+#include "m4/gui.h"
+#include "m4/events.h"
+#include "m4/font.h"
+#include "m4/scene.h"
+#include "m4/actor.h"
+#include "m4/sound.h"
+#include "m4/rails.h"
+#include "m4/converse.h"
+#include "m4/animation.h"
+
+//#define DUMP_SCRIPTS
+
+namespace M4 {
+
+class MidiPlayer;
+class FileSystem;
+class ResourceManager;
+class Mouse;
+class Events;
+class Scene;
+class ViewManager;
+class View;
+class Inventory;
+class GameInterfaceView;
+class ConversationView;
+class Actor;
+class Converse;
+class ScriptInterpreter;
+class WoodScript;
+class Animation;
+
+enum M4GameType {
+	GType_Riddle = 1,
+	GType_Burger,
+	GType_RexNebular,
+	GType_DragonSphere,
+	GType_Phantom
+};
+
+enum Features {
+	kFeaturesNone = 0,
+	kFeaturesCD = 1 << 0,
+	kFeaturesDemo = 1 << 1
+};
+
+enum {
+	kFileTypeHash,
+	kFileTypeHAG
+};
+
+enum {
+	kDebugScript = 1 << 0,
+	kDebugConversations = 2 << 0
+};
+
+#define MESSAGE_BASIC 1
+#define MESSAGE_INTERMEDIATE 2
+#define MESSAGE_DETAILED 3
+
+struct M4GameDescription;
+
+#define GAME_FRAME_DELAY 50
+
+FORCEINLINE void str_lower(char *s) { while (*s) { *s = tolower(*s); s++; } }
+FORCEINLINE void str_upper(char *s) { while (*s) { *s = toupper(*s); s++; } }
+
+FORCEINLINE long FixedMul(long a, long b) { return (long)(((float)a * (float)b) / 65536.0); }
+FORCEINLINE long FixedDiv(long a, long b) { return (long)(((float)a / (float)b) * 65536.0); }
+
+class M4Engine : public Engine {
+private:
+	int goMADS();
+	int goM4();
+
+protected:
+	int init();
+	int go();
+	void shutdown();
+	
+	MidiPlayer *_midi;
+
+public:
+	M4Engine(OSystem *syst, const M4GameDescription *gameDesc);
+	virtual ~M4Engine();
+
+	int getGameType() const;
+	uint32 getFeatures() const;
+	Common::Language getLanguage() const;
+	Common::Platform getPlatform() const;
+	bool isM4() const { return (getGameType() == GType_Riddle) || (getGameType() == GType_Burger); }
+
+	const char *getGameFile(int fileType);
+	Common::EventManager *eventMan() { return _eventMan; }
+	OSystem *system() { return _system; }
+
+	const M4GameDescription *_gameDescription;
+
+	ResourceManager *res() const { return _resourceManager; }
+	MidiPlayer *midi() { return _midi; }
+	Common::SaveFileManager *saveManager() { return _saveFileMan; }
+	void dumpFile(const char* filename, bool uncompress = false);
+	void eventHandler();
+	bool delay(int duration, bool keyAborts = true, bool clickAborts = true);
+	void loadMenu(MenuType menuType, bool loadSaveFromHotkey = false,
+		bool calledFromMainMenu = false);
+
+	// TODO: eventually these have to be removed
+	int32 seed;
+	void imath_seed(int32 seednum) { seed = seednum; }
+	uint32 imath_random() { return(seed = (25173*seed + 13849) & 0xffff); }
+	int32 imath_ranged_rand(int32 a, int32 b) { return (a + (((1 + ABS<int32>(b-a))*imath_random())>>16)); }
+	long imath_ranged_rand16(long a, long b) { return ((a + FixedMul(1+ABS<int32>(b-a),imath_random()))); }
+	//
+
+	ResourceManager *_resourceManager;
+	SaveLoad *_saveLoad;
+	ViewManager *_viewManager;
+	Palette *_palette;
+	Kernel *_kernel;
+	Globals *_globals;
+	Player *_player;
+	Mouse *_mouse;
+	Events *_events;
+	Font *_font;
+	Actor *_actor;
+	Scene *_scene;
+	Dialogs *_dialogs;
+	M4Surface *_screen;
+	Inventory *_inventory;
+	GameInterfaceView *_interfaceView;
+	ConversationView *_conversationView;
+	Sound *_sound;
+	Rails *_rails;
+	Converse *_converse;
+	ScriptInterpreter *_script;
+	WoodScript *_ws;
+	Animation *_animation;
+	Common::RandomSource *_random;
+};
+
+// FIXME: remove global
+extern M4Engine *_vm;
+
+} // End of namespace M4
+
+#endif