/*
Copyright (C) 1999-2006 Id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant 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.

GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

/*
Camera plugin for GtkRadiant
Copyright (C) 2002 Splash Damage Ltd.
*/

void Sys_ERROR( char* text, ... );
char* UnixToDosPath( char* path );
void ExtractFilePath( const char *path, char *dest );
const char* ExtractFilename( const char* path );
bool FileExists (const char *filename);
int Q_stricmp (const char *s1, const char *s2);

typedef int fileHandle_t;

extern "C" {
// command buffer
void Cbuf_AddText( const char *text );
void Cbuf_Execute (void);

// common
#ifndef CDECL
#ifdef WIN32
	#define CDECL __cdecl
#else
	#define CDECL
#endif
#endif

void CDECL Com_Error( int level, const char *error, ... );
void CDECL Com_Printf( const char *msg, ... );
void CDECL Com_DPrintf( const char *msg, ... );
void *Com_Allocate( int bytes );
void Com_Dealloc( void *ptr );

// filesystem
int FS_Read( void *buffer, int len, fileHandle_t f );
int FS_Write( const void *buffer, int len, fileHandle_t h );
int FS_ReadFile( const char *qpath, void **buffer );
void FS_FreeFile( void *buffer );
int FS_FOpenFileRead( const char *filename, fileHandle_t *file, bool uniqueFILE );
fileHandle_t FS_FOpenFileWrite( const char *filename );
void FS_FCloseFile( fileHandle_t f );
}

// vectors
#define DotProduct4(x,y)		((x)[0]*(y)[0]+(x)[1]*(y)[1]+(x)[2]*(y)[2]+(x)[3]*(y)[3])
#define VectorSubtract4(a,b,c)	((c)[0]=(a)[0]-(b)[0],(c)[1]=(a)[1]-(b)[1],(c)[2]=(a)[2]-(b)[2],(c)[3]=(a)[3]-(b)[3])
#define VectorAdd4(a,b,c)		((c)[0]=(a)[0]+(b)[0],(c)[1]=(a)[1]+(b)[1],(c)[2]=(a)[2]+(b)[2],(c)[3]=(a)[3]+(b)[3])
#define VectorCopy4(a,b)		((b)[0]=(a)[0],(b)[1]=(a)[1],(b)[2]=(a)[2],(b)[3]=(a)[3])
#define	VectorScale4(v, s, o)	((o)[0]=(v)[0]*(s),(o)[1]=(v)[1]*(s),(o)[2]=(v)[2]*(s),(o)[3]=(v)[3]*(s))
#define	VectorMA4(v, s, b, o)	((o)[0]=(v)[0]+(b)[0]*(s),(o)[1]=(v)[1]+(b)[1]*(s),(o)[2]=(v)[2]+(b)[2]*(s),(o)[3]=(v)[3]+(b)[3]*(s))

#define Vector4Copy(a,b)		((b)[0]=(a)[0],(b)[1]=(a)[1],(b)[2]=(a)[2],(b)[3]=(a)[3])

#define	SnapVector(v) {v[0]=(int)v[0];v[1]=(int)v[1];v[2]=(int)v[2];}