/*
Copyright (C) 1994-1995 Apogee Software, Ltd.

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.

*/
//***************************************************************************
//
//    RT_UTIL.C - various utils palette funcs and modex stuff
//
//***************************************************************************

#ifndef _rt_util_public
#define _rt_util_public

#define ERRORVERSIONROW 1
#define ERRORVERSIONCOL 67

#define LOWMEMORYROW 18
#define LOWMEMORYCOL 1

#include "develop.h"

extern  int    egacolor[16];
extern  byte   *  origpal;
extern  int      _argc;
extern  char **  _argv;

void  markgetch( void );
boolean StringsNotEqual (char * s1, char * s2, int length);
void  GetPalette(char * pal);
void  ClearGraphicsScreen( void );
void  ClearBuffer( char * buf, int size );
void  Error (char *error, ...) __attribute__((noreturn,format(printf,1,2)));
void  StartupSoftError ( void );
void  ShutdownSoftError ( void );
int   CheckParm (char *check);
int   SafeOpenWrite (char *filename);
int   SafeOpenAppend (char *filename);
int   SafeOpenRead (char *filename);
void  SafeRead (int handle, void *buffer, long count);
void  SafeWrite (int handle, void *buffer, long count);
void  SafeWriteString (int handle, char * buffer);
void  *SafeMalloc (long size);
void  *SafeLevelMalloc (long size);
void  SafeFree (void * ptr);
long  LoadFile (char *filename, void **bufferptr);
void  SaveFile (char *filename, void *buffer, long count);
void  GetPathFromEnvironment( char *fullname, const char *envname, const char *filename );
void  DefaultExtension (char *path, char *extension);
void  DefaultPath (char *path, char *basepath);
void  ExtractFileBase (char *path, char *dest);
long  ParseHex (char *hex);
long  ParseNum (char *str);
short MotoShort (short l);
short IntelShort (short l);
int   MotoLong (int l);
int   IntelLong (int l);
void  SwapIntelLong (int *l);
void  SwapIntelShort(short *s);
void  SwapIntelLongArray (int *l, int num);
void  SwapIntelShortArray (short *s, int num);
int   US_CheckParm (char *parm, char **strings);
byte  BestColor (int r, int g, int b, byte *palette);
int   atan2_appx(int,int);
int   FindDistance(int ix, int iy);
int   Find_3D_Distance(int ix, int iy, int iz);
void  SetPalette ( char * pal );
void  SetaPalette ( byte * pal );
void  FindEGAColors ( void );
void  VL_FillPalette (int red, int green, int blue);
void  VL_SetColor  (int color, int red, int green, int blue);
void  VL_GetColor  (int color, int *red, int *green, int *blue);
void  VL_SetPalette (byte *palette);
void  VL_GetPalette (byte *palette);
void  UL_printf (byte *str);
void  VL_NormalizePalette (byte *palette);
void  MapDebug (char *error, ...) __attribute__((format(printf,1,2)));
void  OpenMapDebug ( void );
void  UL_ColorBox (int x, int y, int w, int h, int color);

void UL_DisplayMemoryError ( int memneeded );

int   SideOfLine(int x1, int y1, int x2, int y2, int x3, int y3);

void hsort(char * base, int nel, int width, int (*compare)(), void (*switcher)());

char * UL_GetPath (char * path, char *dir);
boolean UL_ChangeDirectory (char *path);
boolean UL_ChangeDrive (char *drive);
void AbortCheck (char * abortstring);

void FixFilePath(char *filename);


#if PLATFORM_WIN32
#include <io.h>
struct find_t
{
	long handle;
    struct _finddata_t data;
	char name[MAX_PATH];
};
int _dos_findfirst(char *filename, int x, struct find_t *f);
int _dos_findnext(struct find_t *f);

#elif PLATFORM_UNIX
struct find_t
{
    DIR *dir;
    char pattern[MAX_PATH];
    char name[MAX_PATH];
};
int _dos_findfirst(char *filename, int x, struct find_t *f);
int _dos_findnext(struct find_t *f);

#elif PLATFORM_DOS
   /* no-op */
#else
#error please define for your platform.
#endif


#if !PLATFORM_DOS
struct dosdate_t
{
    unsigned char day;
    unsigned char month;
    unsigned int year;
    unsigned char dayofweek;
};

void _dos_getdate(struct dosdate_t *date);
#endif


#if (SOFTERROR==1)

void  SoftwareError (char *error, ...) __attribute__((format(printf,1,2)));
#define SoftError  SoftwareError

#else
void  SoftwareError (char *error, ...) __attribute__((format(printf,1,2)));
//#define SoftError  SoftwareError

#define SoftError  if (1) {} else SoftwareError

//#define SoftError

#endif

#if (DEBUG==1)

void  DebugError (char *error, ...) __attribute__((format(printf,1,2)));
#define Debug  DebugError

#else

void  DebugError (char *error, ...) __attribute__((format(printf,1,2)));
#define Debug  DebugError
//#define Debug

#endif

void Square (void);

#ifdef __WATCOMC__
#pragma aux Square=\
   "mov edx,03c4h",  \
   "mov eax,0100h",  \
	"out dx,ax",      \
   "mov eax,0e3h",    \
   "mov edx,03c2h",  \
   "out dx,ax",      \
   "mov eax,0300h",  \
   "mov edx,03c4h",  \
   "out dx,ax"      \
   modify exact [eax edx]
#endif


#ifdef DOS
void my_outp(int port, int data);
#else
#define my_outp(a,b)
#endif

#ifdef __WATCOMC__
#pragma aux my_outp =  \
        "out dx,al",                     \
        parm    [edx] [eax] \
        modify exact []
#endif

#define OUTP                              my_outp

#endif