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diff --git a/scumm/util.h b/scumm/util.h
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+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2004 The ScummVM project
+ *
+ * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * $Header$
+ *
+ */
+
+#ifndef SCUMM_UTIL_H
+#define SCUMM_UTIL_H
+
+#include "common/file.h"
+#include "common/util.h"
+
+namespace Scumm {
+
+class ScummFile : public File {
+private:
+	byte _encbyte;
+	uint32	_subFileStart;
+	uint32	_subFileLen;
+public:
+	ScummFile();
+	void setEnc(byte value);
+	
+	void setSubfileRange(uint32 start, uint32 len);
+	void resetSubfile();
+
+	bool open(const char *filename, AccessMode mode = kFileReadMode);
+	bool openSubFile(const char *filename);
+
+	bool eof();
+	uint32 pos();
+	uint32 size();
+	void seek(int32 offs, int whence = SEEK_SET);
+	uint32 read(void *ptr, uint32 size);
+	uint32 write(const void *ptr, uint32 size);
+};
+
+
+// This is a constant lookup table of reverse bit masks
+extern const byte revBitMask[8];
+
+/* Direction conversion functions (between old dir and new dir format) */
+int newDirToOldDir(int dir);
+int oldDirToNewDir(int dir);
+
+int normalizeAngle(int angle);
+int fromSimpleDir(int dirtype, int dir);
+int toSimpleDir(int dirtype, int dir);
+
+void checkRange(int max, int min, int no, const char *str);
+
+const char *tag2str(uint32 tag);
+
+} // End of namespace Scumm
+
+#endif