enginecallback_menu.h

/*
enginecallback.h - actual engine callbacks
Copyright (C) 2010 Uncle Mike
Copyright (C) 2017 a1batross

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 3 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.
*/

#pragma once
#ifndef ENGINECALLBACKS_H
#define ENGINECALLBACKS_H

#include <stdarg.h>
#include "extdll_menu.h"
#include "Primitive.h"
#include "netadr.h"

class EngFuncs
{
public:
	// image handlers
	static inline HIMAGE PIC_Load( const char *szPicName, const byte *ucRawImage, int ulRawImageSize, int flags = 0)
	{
		return engfuncs.pfnPIC_Load( szPicName, ucRawImage, ulRawImageSize, flags );
	}

	static inline HIMAGE PIC_Load( const char *szPicName, int flags = 0)
	{
		return engfuncs.pfnPIC_Load( szPicName, 0, 0, flags );
	}

	static inline void PIC_Free( const char *szPicName )
	{
		engfuncs.pfnPIC_Free( szPicName );
	}

	static inline int	PIC_Width( HIMAGE hPic )
	{
		return engfuncs.pfnPIC_Width( hPic );
	}

	static inline int	PIC_Height( HIMAGE hPic )
	{
		return engfuncs.pfnPIC_Height( hPic );
	}

	static inline Size PIC_Size( HIMAGE hPic )
	{
		return Size( PIC_Width( hPic ), PIC_Height( hPic ));
	}
	static void PIC_Set( HIMAGE hPic, int r, int g, int b, int a = 255 );

	static inline void PIC_Draw( int x, int y, int width, int height, const wrect_t *prc = NULL )
	{
		engfuncs.pfnPIC_Draw( x, y, width, height, prc );
	}

	static inline void PIC_DrawHoles( int x, int y, int width, int height, const wrect_t *prc = NULL )
	{
		engfuncs.pfnPIC_DrawHoles( x, y, width, height, prc );
	}

	static inline void PIC_DrawTrans( int x, int y, int width, int height, const wrect_t *prc = NULL )
	{
		engfuncs.pfnPIC_DrawTrans( x, y, width, height, prc );
	}

	static inline void PIC_DrawAdditive( int x, int y, int width, int height, const wrect_t *prc = NULL )
	{
		engfuncs.pfnPIC_DrawAdditive( x, y, width, height, prc );
	}

	static inline void PIC_Draw( int x, int y, const wrect_t *prc = NULL )
	{
		PIC_Draw( x, y, -1, -1, prc );
	}

	static inline void PIC_DrawHoles( int x, int y, const wrect_t *prc = NULL )
	{
		PIC_DrawHoles( x, y, -1, -1, prc );
	}

	static inline void PIC_DrawTrans( int x, int y, const wrect_t *prc = NULL )
	{
		PIC_DrawTrans( x, y, -1, -1, prc );
	}

	static inline void PIC_DrawAdditive( int x, int y, const wrect_t *prc = NULL )
	{
		PIC_DrawAdditive( x, y, -1, -1, prc );
	}

	static inline void PIC_Draw( Point p, Size s, const wrect_t *prc = NULL )
	{
		PIC_Draw( p.x, p.y, s.w, s.h, prc );
	}

	static inline void PIC_DrawHoles( Point p, Size s, const wrect_t *prc = NULL )
	{
		PIC_DrawHoles( p.x, p.y, s.w, s.h, prc );
	}

	static inline void PIC_DrawTrans( Point p, Size s, const wrect_t *prc = NULL )
	{
		PIC_DrawTrans( p.x, p.y, s.w, s.h, prc );
	}

	static inline void PIC_DrawAdditive( Point p, Size s, const wrect_t *prc = NULL )
	{
		PIC_DrawAdditive( p.x, p.y, s.w, s.h, prc );
	}

	static inline void PIC_Draw( Point p, const wrect_t *prc = NULL )
	{
		PIC_Draw( p.x, p.y, prc );
	}

	static inline void PIC_DrawHoles( Point p, const wrect_t *prc = NULL )
	{
		PIC_DrawHoles( p.x, p.y, prc );
	}

	static inline void PIC_DrawAdditive( Point p, const wrect_t *prc = NULL )
	{
		PIC_DrawAdditive( p.x, p.y, prc );
	}

	static inline void PIC_DrawTrans( Point p, const wrect_t *prc = NULL )
	{
		PIC_DrawTrans( p.x, p.y, prc );
	}

	static inline void PIC_EnableScissor( int x, int y, int width, int height )
	{
		engfuncs.pfnPIC_EnableScissor( x, y, width, height );
	}

	static inline void PIC_DisableScissor( void )
	{
		engfuncs.pfnPIC_DisableScissor();
	}

	// screen handlers
	static void FillRGBA( int x, int y, int width, int height, int r, int g, int b, int a );

	// cvar handlers
	static inline cvar_t *CvarRegister( const char *szName, const char *szValue, int flags )
	{
		return engfuncs.pfnRegisterVariable( szName, szValue, flags );
	}

	static inline float GetCvarFloat( const char *szName )
	{
		return engfuncs.pfnGetCvarFloat( szName );
	}

	static inline const char *GetCvarString( const char *szName )
	{
		return engfuncs.pfnGetCvarString( szName );
	}

	static inline void CvarSetString( const char *szName, const char *szValue )
	{
		engfuncs.pfnCvarSetString( szName, szValue );
	}

	static inline void CvarSetValue( const char *szName, float flValue )
	{
		engfuncs.pfnCvarSetValue( szName, flValue );
	}

	// command handlers
	static inline int	Cmd_AddCommand( const char *cmd_name, void (*function)(void) )
	{
		return engfuncs.pfnAddCommand( cmd_name, function );
	}

	static inline void ClientCmd( int execute_now, const char *szCmdString )
	{
		engfuncs.pfnClientCmd( execute_now, szCmdString );
	}

	static inline void Cmd_RemoveCommand( const char *cmd_name )
	{
		engfuncs.pfnDelCommand( cmd_name );
	}

	static inline int CmdArgc( void )
	{
		return engfuncs.pfnCmdArgc();
	}

	static inline const char *CmdArgv( int argi )
	{
		return engfuncs.pfnCmdArgv( argi );
	}

	static inline const char *CmdArgs( void )
	{
		return engfuncs.pfnCmd_Args();
	}

	// sound handlers
	static inline void PlayLocalSound( const char *szSound )
	{
		engfuncs.pfnPlayLocalSound( szSound );
	}

	// cinematic handlers
	static void DrawLogo( const char *filename, float x, float y, float width, float height );

	static inline void PrecacheLogo( const char *filename )
	{
		engfuncs.pfnDrawLogo( filename, 0, 0, 0, 0 );
	}

	static inline int	GetLogoWidth( void )
	{
		return engfuncs.pfnGetLogoWidth();
	}

	static inline int	GetLogoHeight( void )
	{
		return engfuncs.pfnGetLogoHeight();
	}

	static inline float GetLogoLength( void ) // cinematic duration in seconds
	{
		return engfuncs.pfnGetLogoLength();
	}

	// text message system
	static void DrawCharacter( int x, int y, int width, int height, int ch, int ulRGBA, HIMAGE hFont );
	static int DrawConsoleString( int x, int y, const char *string );
	static void DrawSetTextColor( int r, int g, int b, int alpha = 255 );
	static void ConsoleStringLen(  const char *string, int *length, int *height );
	static int ConsoleCharacterHeight();

	static inline int DrawConsoleString( Point coord, const char *string )
	{
		return DrawConsoleString( coord.x, coord.y, string );
	}

	static inline void SetConsoleDefaultColor( int r, int g, int b ) // color must came from colors.lst
	{
		engfuncs.pfnSetConsoleDefaultColor( r, g, b );
	}

	// custom rendering (for playermodel preview)
	static inline struct cl_entity_s *GetPlayerModel( void )	// for drawing playermodel previews
	{
		return engfuncs.pfnGetPlayerModel();
	}

	static inline void SetModel( struct cl_entity_s *ed, const char *path )
	{
		engfuncs.pfnSetModel( ed, path );
	}

	static inline void ClearScene( void )
	{
		engfuncs.pfnClearScene();
	}
	static inline void RenderScene( const struct ref_viewpass_s *fd )
	{
		engfuncs.pfnRenderScene( fd );
	}
	static inline int	CL_CreateVisibleEntity( int type, struct cl_entity_s *ent )
	{
		return engfuncs.CL_CreateVisibleEntity( type, ent );
	}

	// misc handlers
	// static inline void HostError( const char *szFmt, ... );
	static inline int	FileExists( const char *filename, int gamedironly = 0 )
	{
		return engfuncs.pfnFileExists( filename, gamedironly );
	}

	static inline void GetGameDir( char *szGetGameDir )
	{
		engfuncs.pfnGetGameDir( szGetGameDir );
	}

	// gameinfo handlers
	static inline int	CreateMapsList( int iRefresh )
	{
		return engfuncs.pfnCreateMapsList( iRefresh );
	}

	static inline int	ClientInGame( void )
	{
		return engfuncs.pfnClientInGame();
	}

	static inline void ClientJoin( const struct netadr_s adr )
	{
		engfuncs.pfnClientJoin( adr );
	}

	// parse txt files
	static inline byte *COM_LoadFile( const char *filename, int *pLength = 0 )
	{
		return engfuncs.COM_LoadFile( filename, pLength );
	}

	// deprecated, do not use
	//static inline char *COM_ParseFile( char *data, char *token )
	//{
	//	return engfuncs.COM_ParseFile( data, token );
	//}

	static inline void COM_FreeFile( void *buffer )
	{
		engfuncs.COM_FreeFile( buffer );
	}

	// keyfuncs
	static inline void KEY_ClearStates( void ) // call when menu open or close
	{
		engfuncs.pfnKeyClearStates();
	}

	static inline void KEY_SetDest( int dest )
	{
		engfuncs.pfnSetKeyDest( dest );
	}

	static inline const char *KeynumToString( int keynum )
	{
		return engfuncs.pfnKeynumToString( keynum );
	}

	static inline const char *KEY_GetBinding( int keynum )
	{
		return engfuncs.pfnKeyGetBinding( keynum );
	}

	static inline void KEY_SetBinding( int keynum, const char *binding )
	{
		engfuncs.pfnKeySetBinding( keynum, binding );
	}

	static inline int	KEY_IsDown( int keynum )
	{
		return engfuncs.pfnKeyIsDown( keynum );
	}

	static inline int	KEY_GetOverstrike( void )
	{
		return  engfuncs.pfnKeyGetOverstrikeMode();
	}

	static inline void KEY_SetOverstrike( int fActive )
	{
		engfuncs.pfnKeySetOverstrikeMode( fActive );
	}

	static inline void *KEY_GetState( const char *name )			// for mlook, klook etc
	{
		return engfuncs.pfnKeyGetState( name );
	}

	// engine memory manager
	static inline void *MemAlloc( size_t cb, const char *filename, const int fileline )
	{
		return engfuncs.pfnMemAlloc( cb, filename, fileline );
	}

	static inline void MemFree( void *mem, const char *filename, const int fileline )
	{
		engfuncs.pfnMemFree( mem, filename, fileline );
	}

	// collect info from engine
	static inline int	GetGameInfo( GAMEINFO *pgameinfo )
	{
		return engfuncs.pfnGetGameInfo( pgameinfo );
	}

	static inline GAMEINFO **GetGamesList( int *numGames ) // collect info about all mods
	{
		return  engfuncs.pfnGetGamesList( numGames );
	}

	static inline char **GetFilesList( const char *pattern, int *numFiles, int gamedironly ) // find in files
	{
		return engfuncs.pfnGetFilesList( pattern, numFiles, gamedironly );
	}

	static inline int GetSaveComment( const char *savename, char *comment )
	{
		return  engfuncs.pfnGetSaveComment( savename, comment );
	}

	static inline int	GetDemoComment( const char *demoname, char *comment )
	{
		return  engfuncs.pfnGetDemoComment( demoname, comment );
	}

	static inline int	CheckGameDll( void )	// returns false if hl.dll is missed or invalid
	{
		return engfuncs.pfnCheckGameDll();
	}

	static inline char *GetClipboardData( void )
	{
		return  engfuncs.pfnGetClipboardData();
	}

	// engine launcher
	static inline void ShellExecute( const char *name, const char *args, int closeEngine )
	{
		engfuncs.pfnShellExecute( name, args, closeEngine );
	}

	static inline void WriteServerConfig( const char *name )
	{
		engfuncs.pfnWriteServerConfig( name );
	}

	static inline void PlayBackgroundTrack( const char *introName, const char *loopName )
	{
		engfuncs.pfnPlayBackgroundTrack( introName, loopName );
	}

	static inline void StopBackgroundTrack( )
	{
		engfuncs.pfnPlayBackgroundTrack( NULL, NULL );
	}

	static inline void HostEndGame( const char *szFinalMessage )
	{
		engfuncs.pfnHostEndGame( szFinalMessage );
	}

	// menu interface is freezed at version 0.75
	// new functions starts here
	static inline float RandomFloat( float flLow, float flHigh )
	{
		return engfuncs.pfnRandomFloat( flLow, flHigh );
	}

	static inline int	RandomLong( int lLow, int lHigh )
	{
		return engfuncs.pfnRandomLong( lLow, lHigh );
	}

	static inline void SetCursor( void *hCursor ) // change cursor
	{
		engfuncs.pfnSetCursor( hCursor );
	}

	static inline int	IsMapValid( const char *filename )
	{
		return engfuncs.pfnIsMapValid( (char*)filename );
	}

	static inline void ProcessImage( int texnum, float gamma, int topColor = -1, int bottomColor = -1 )
	{
		engfuncs.pfnProcessImage( texnum, gamma, topColor, bottomColor );
	}

	static inline int	CompareFileTime( char *filename1, char *filename2, int *iCompare )
	{
		return engfuncs.pfnCompareFileTime( filename1, filename2, iCompare );
	}

	static inline const char *GetModeString( int mode )
	{
		return engfuncs.pfnGetModeString( mode );
	}

	static inline int COM_SaveFile( const char *filename, const void *buffer, int len )
	{
		return engfuncs.COM_SaveFile( filename, buffer, len );
	}

	static inline int DeleteFile( const char *filename )
	{
		return engfuncs.COM_RemoveFile( filename );
	}

	static ui_enginefuncs_t engfuncs;
	static ui_extendedfuncs_t textfuncs;

	static inline void EnableTextInput( int enable )
	{
		if( textfuncs.pfnEnableTextInput )
			textfuncs.pfnEnableTextInput( enable );
	}

	static int UtfProcessChar( int ch );
	static int UtfMoveLeft( const char *str, int pos );
	static int UtfMoveRight( const char *str, int pos, int length );

	static inline bool GetRenderers( int num, char *sz1, size_t s1, char *sz2, size_t s2 )
	{
		return textfuncs.pfnGetRenderers( num, sz1, s1, sz2, s2 ) != 0;
	}
	
	static inline double DoubleTime()
	{
		return textfuncs.pfnDoubleTime();
	}

	static inline char *COM_ParseFile( char *data, char *token, const int size )
	{
		return textfuncs.pfnParseFile( data, token, size, 0, nullptr );
	}

	static inline char *COM_ParseFile( char *data, char *token, const int size, int flags, int *len )
	{
		return textfuncs.pfnParseFile( data, token, size, flags, len );
	}

	static inline const char *NET_AdrToString( const netadr_t adr )
	{
		return textfuncs.pfnAdrToString( adr );
	}

	static inline void ClientCmdF( bool now, const char *fmt, ... ) _format( 2 )
	{
		va_list va;
		char buf[4096];

		va_start( va, fmt );
		vsnprintf( buf, sizeof( buf ), fmt, va );
		va_end( va );

		ClientCmd( now, buf );
	}

	static inline void CvarSetStringF( const char *cvar, const char *fmt, ... ) _format( 2 )
	{
		va_list va;
		char buf[4096];

		va_start( va, fmt );
		vsnprintf( buf, sizeof( buf ), fmt, va );
		va_end( va );

		CvarSetString( cvar, buf );
	}
};


// built-in memory manager
// NOTE: not recommeded to use, because object destruction may be after engine halts
#define MALLOC( x )		EngFuncs::MemAlloc( x, __FILE__, __LINE__ )
#define CALLOC( x, y )	EngFuncs::MemAlloc((x) * (y), __FILE__, __LINE__ )
#define FREE( x )		EngFuncs::MemFree( x, __FILE__, __LINE__ )

#define CL_IsActive()	(EngFuncs::ClientInGame() && !EngFuncs::GetCvarFloat( "cl_background" ))
#define Host_Error (*EngFuncs::engfuncs.pfnHostError)
#define Con_DPrintf (*EngFuncs::engfuncs.Con_DPrintf)
#define Con_NPrintf (*EngFuncs::engfuncs.Con_NPrintf)
#define Con_NXPrintf (*EngFuncs::engfuncs.Con_NXPrintf)
#define Con_Printf (*EngFuncs::engfuncs.Con_Printf)

#endif // ENGINECALLBACKS_H