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Diffstat (limited to 'engines/scumm/util.h')
| -rw-r--r-- | engines/scumm/util.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/engines/scumm/util.h b/engines/scumm/util.h new file mode 100644 index 0000000000..99d75cf127 --- /dev/null +++ b/engines/scumm/util.h @@ -0,0 +1,175 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2002-2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#ifndef SCUMM_UTIL_H +#define SCUMM_UTIL_H + +#include "common/file.h" +#include "common/stream.h" + +namespace Scumm { + +#define revBitMask(x) (0x80 >> (x)) + +class BaseScummFile : public Common::File { +public: + virtual void setEnc(byte value) = 0; + + virtual bool open(const char *filename, AccessMode mode = kFileReadMode) = 0; + virtual bool openSubFile(const char *filename) = 0; + + virtual bool eof() = 0; + virtual uint32 pos() = 0; + virtual uint32 size() = 0; + virtual void seek(int32 offs, int whence = SEEK_SET) = 0; + virtual uint32 read(void *dataPtr, uint32 dataSize) = 0; + virtual uint32 write(const void *dataPtr, uint32 dataSize) = 0; +}; + +class ScummFile : public BaseScummFile { +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 *dataPtr, uint32 dataSize); + uint32 write(const void *dataPtr, uint32 dataSize); +}; + +class ScummNESFile : public BaseScummFile { +public: + enum ROMset { + kROMsetUSA, + kROMsetEurope, + kROMsetSweden, + kROMsetFrance, + kROMsetGermany, + kROMsetNum + }; + + struct Resource; + struct LFLEntry; + struct LFL; + +private: + Common::MemoryReadStream *_stream; + ROMset _ROMset; + byte *_buf; + + bool generateIndex(); + bool generateResource(int res); + uint16 extractResource(Common::WriteStream *out, Resource *res); + + byte fileReadByte(); + uint16 fileReadUint16LE(); + +public: + ScummNESFile(); + void setEnc(byte value); + + bool open(const char *filename, AccessMode mode = kFileReadMode); + bool openSubFile(const char *filename); + + void close(); + bool eof() { return _stream->eos(); } + uint32 pos() { return _stream->pos(); } + uint32 size() { return _stream->size(); } + void seek(int32 offs, int whence = SEEK_SET) { _stream->seek(offs, whence); } + uint32 read(void *dataPtr, uint32 dataSize) { return _stream->read(dataPtr, dataSize); } + uint32 write(const void *dataPtr, uint32 dataSize); +}; + + +class ScummC64File : public BaseScummFile { +private: + Common::MemoryReadStream *_stream; + byte _roomDisks[59], _roomTracks[59], _roomSectors[59]; + + byte *_buf; + + bool _maniac; + Common::String _disk1, _disk2; + int _openedDisk; + + int _numGlobalObjects; + int _numRooms; + int _numCostumes; + int _numScripts; + int _numSounds; + const int *_resourcesPerFile; + + bool openDisk(char num); + + bool generateIndex(); + bool generateResource(int res); + + uint16 extractIndex(Common::WriteStream *out); + uint16 extractResource(Common::WriteStream *out, int res); + + byte fileReadByte(); + uint16 fileReadUint16LE(); + +public: + ScummC64File(char *disk1, char *disk2, bool maniac); + void setEnc(byte value); + + bool open(const char *filename, AccessMode mode = kFileReadMode); + bool openSubFile(const char *filename); + + void close(); + bool eof() { return _stream->eos(); } + uint32 pos() { return _stream->pos(); } + uint32 size() { return _stream->size(); } + void seek(int32 offs, int whence = SEEK_SET) { _stream->seek(offs, whence); } + uint32 read(void *dataPtr, uint32 dataSize) { return _stream->read(dataPtr, dataSize); } + uint32 write(const void *dataPtr, uint32 dataSize); +}; + + +/* 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 |