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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.
*
*/
/*
* This code is based on original Hugo Trilogy source code
*
* Copyright (c) 1989-1995 David P. Gray
*
*/
#ifndef HUGO_FILE_H
#define HUGO_FILE_H
namespace Hugo {
/**
* Enumerate overlay file types
*/
enum OvlType {kOvlBoundary, kOvlOverlay, kOvlBase};
struct UifHdr { // UIF font/image look up
uint16 _size; // Size of uif item
uint32 _offset; // Offset of item in file
};
class FileManager {
public:
FileManager(HugoEngine *vm);
virtual ~FileManager();
SoundPtr getSound(const int16 sound, uint16 *size);
void readBootFile();
void readImage(const int objNum, Object *objPtr);
void readUIFImages();
void readUIFItem(const int16 id, byte *buf);
bool restoreGame(const int16 slot);
bool saveGame(const int16 slot, const Common::String &descrip);
// Name scenery and objects picture databases
const char *getBootFilename() const;
const char *getObjectFilename() const;
const char *getSceneryFilename() const;
const char *getSoundFilename() const;
const char *getStringFilename() const;
const char *getUifFilename() const;
virtual void openDatabaseFiles() = 0;
virtual void closeDatabaseFiles() = 0;
virtual void instructions() const = 0;
virtual void readBackground(const int screenIndex) = 0;
virtual void readOverlay(const int screenNum, ImagePtr image, OvlType overlayType) = 0;
virtual const char *fetchString(const int index) = 0;
protected:
HugoEngine *_vm;
static const int kMaxUifs = 32; // Max possible uif items in hdr
static const int kMaxSounds = 64; // Max number of sounds
static const int kRepeatMask = 0xC0; // Top 2 bits mean a repeat code
static const int kLengthMask = 0x3F; // Lower 6 bits are length
static const int kNumColors = 16; // Num colors to save in palette
/**
* Structure of scenery file lookup entry
*/
struct SceneBlock {
uint32 _sceneOffset;
uint32 _sceneLength;
uint32 _boundaryOffset;
uint32 _boundaryLength;
uint32 _overlayOffset;
uint32 _overlayLength;
uint32 _baseOffset;
uint32 _baseLength;
};
struct PCCHeader { // Structure of PCX file header
byte _mfctr, _vers, _enc, _bpx;
uint16 _x1, _y1, _x2, _y2; // bounding box
uint16 _xres, _yres;
byte _palette[3 * kNumColors]; // EGA color palette
byte _vmode, _planes;
uint16 _bytesPerLine; // Bytes per line
byte _fill2[60];
}; // Header of a PCC file
bool _firstUIFFl;
UifHdr _UIFHeader[kMaxUifs]; // Lookup for uif fonts/images
Common::File _stringArchive; // Handle for string file
Common::File _sceneryArchive1; // Handle for scenery file
Common::File _objectsArchive; // Handle for objects file
PCCHeader _PCCHeader;
Seq *readPCX(Common::ReadStream &f, Seq *seqPtr, byte *imagePtr, const bool firstFl, const char *name);
// If this is the first call, read the lookup table
bool _hasReadHeader;
SoundHdr _soundHdr[kMaxSounds]; // Sound lookup table
private:
byte *convertPCC(byte *p, const uint16 y, const uint16 bpl, ImagePtr dataPtr) const;
UifHdr *getUIFHeader(const Uif id);
};
class FileManager_v1d : public FileManager {
public:
FileManager_v1d(HugoEngine *vm);
~FileManager_v1d();
virtual void closeDatabaseFiles();
virtual void instructions() const;
virtual void openDatabaseFiles();
virtual void readBackground(const int screenIndex);
virtual void readOverlay(const int screenNum, ImagePtr image, OvlType overlayType);
virtual const char *fetchString(const int index);
};
class FileManager_v2d : public FileManager_v1d {
public:
FileManager_v2d(HugoEngine *vm);
~FileManager_v2d();
virtual void closeDatabaseFiles();
virtual void openDatabaseFiles();
virtual void readBackground(const int screenIndex);
virtual void readOverlay(const int screenNum, ImagePtr image, OvlType overlayType);
const char *fetchString(const int index);
private:
char *_fetchStringBuf;
};
class FileManager_v3d : public FileManager_v2d {
public:
FileManager_v3d(HugoEngine *vm);
~FileManager_v3d();
void closeDatabaseFiles();
void openDatabaseFiles();
void readBackground(const int screenIndex);
void readOverlay(const int screenNum, ImagePtr image, OvlType overlayType);
private:
Common::File _sceneryArchive2; // Handle for scenery file
};
class FileManager_v2w : public FileManager_v2d {
public:
FileManager_v2w(HugoEngine *vm);
~FileManager_v2w();
void instructions() const;
};
class FileManager_v1w : public FileManager_v2w {
public:
FileManager_v1w(HugoEngine *vm);
~FileManager_v1w();
void readOverlay(const int screenNum, ImagePtr image, OvlType overlayType);
};
} // End of namespace Hugo
#endif //HUGO_FILE_H
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