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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 Soltys source code
* Copyright (c) 1994-1995 Janus B. Wisniewski and L.K. Avalon
*/
#ifndef __CGE_GENERAL__
#define __CGE_GENERAL__
#include "common/system.h"
#include "common/file.h"
#include "common/random.h"
#include "common/textconsole.h"
#include "common/str.h"
#include "cge/jbw.h"
namespace CGE {
#define kCryptSeed 0xA5
enum IOMode { kModeRead, kModeWrite, kModeUpdate };
struct Dac {
uint8 _r;
uint8 _g;
uint8 _b;
};
typedef uint16 CRYPT(void *buf, uint16 siz, uint16 seed);
class Engine_ {
protected:
static void (* oldTimer)(...);
static void newTimer(...);
public:
Engine_(uint16 tdiv);
~Engine_();
};
class Ems;
class Emm {
friend class Ems;
bool test();
long _top;
long _lim;
Ems *_list;
int _han;
static void *_frame;
public:
Emm(long size);
~Emm();
Ems *alloc(uint16 siz);
void release();
};
class Ems {
friend class Emm;
Emm *_emm;
long _ptr;
uint16 _size;
Ems *_next;
public:
Ems();
void *operator & () const;
uint16 size();
};
template <class T>
void swap(T &A, T &B) {
T a = A;
A = B;
B = a;
}
template <class T>
T max(T A, T B) {
return (A > B) ? A : B;
}
template <class T>
T min(T A, T B) {
return (A < B) ? A : B;
}
class XFile {
public:
IOMode _mode;
uint16 _error;
XFile() : _mode(kModeRead), _error(0) { }
XFile(IOMode mode) : _mode(mode), _error(0) { }
virtual ~XFile() { }
virtual uint16 read(void *buf, uint16 len) = 0;
virtual uint16 write(void *buf, uint16 len) = 0;
virtual long mark() = 0;
virtual long size() = 0;
virtual long seek(long pos) = 0;
};
template <class T>
inline uint16 XRead(XFile *xf, T *t) {
return xf->read((uint8 *) t, sizeof(*t));
}
class IoHand : public XFile {
protected:
Common::File *_file;
uint16 _seed;
CRYPT *_crypt;
public:
IoHand(const char *name, IOMode mode = kModeRead, CRYPT crypt = NULL);
IoHand(IOMode mode = kModeRead, CRYPT *crpt = NULL);
virtual ~IoHand();
static bool exist(const char *name);
uint16 read(void *buf, uint16 len);
uint16 write(void *buf, uint16 len);
long mark();
long size();
long seek(long pos);
};
CRYPT XCrypt;
CRYPT RCrypt;
uint16 atow(const char *a);
uint16 xtow(const char *x);
char *wtom(uint16 val, char *str, int radix, int len);
char *dwtom(uint32 val, char *str, int radix, int len);
int takeEnum(const char **tab, const char *txt);
uint16 chkSum(void *m, uint16 n);
long timer();
char *mergeExt(char *buf, const char *nam, const char *ext);
char *forceExt(char *buf, const char *nam, const char *ext);
int driveCD(unsigned drv);
// MISSING FUNCTIONS
void _fqsort(void *base, uint16 nelem, uint16 width, int (*fcmp)(const void *, const void *));
const char *progName(const char *ext = NULL);
char *mergeExt(char *buf, const char *nam, const char *ext);
char *forceExt(char *buf, const char *nam, const char *ext);
unsigned fastRand();
unsigned fastRand(unsigned s);
uint16 rCrypt(void *buf, uint16 siz, uint16 seed);
uint16 atow(const char *a);
uint16 xtow(const char *x);
char *wtom(uint16 val, char *str, int radix, int len);
char *dwtom(uint32 val, char * str, int radix, int len);
int takeEnum(const char **tab, const char *txt);
long timer();
int new_random(int range);
} // End of namespace CGE
#endif
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