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/* ScummVM - Scumm Interpreter
* Copyright (C) 2002-2005 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
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