W3DFileSystem.h

/*
**	Command & Conquer Generals Zero Hour(tm)
**	Copyright 2025 Electronic Arts Inc.
**
**	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.
**
**	You should have received a copy of the GNU General Public License
**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

////////////////////////////////////////////////////////////////////////////////
//																																						//
//  (c) 2001-2003 Electronic Arts Inc.																				//
//																																						//
////////////////////////////////////////////////////////////////////////////////

// FILE: W3DFileSystem.h ////////////////////////////////////////////////////////
//
// W3D implementation of a file factory.  Uses GDI assets, so that
// W3D files and targa files are loaded using the GDI file interface.
//
// Author: John Ahlquist, Sept 2001
//
///////////////////////////////////////////////////////////////////////////////

#pragma once

#include "WWLib/ffactory.h"
#include "Common/ArchiveFileSystem.h"
#include "Common/file.h"

//-------------------------------------------------------------------------------------------------
/** Game file access.  At present this allows us to access test assets, assets from
	* legacy GDI assets, and the current flat directory access for textures, models etc */
//-------------------------------------------------------------------------------------------------
class GameFileClass : public FileClass
{

public:

	GameFileClass(char const *filename);
	GameFileClass();
	virtual ~GameFileClass() override;

	virtual char const * File_Name() const override;
	virtual char const * Set_Name(char const *filename) override;

	// (gth) had to re-instate these functions in the base class, for now just give empty implementations...
	virtual int Create() override { assert(0); return 1; }
	virtual int Delete() override { assert(0); return 1; }

	virtual bool Is_Available(int forced=false) override;
	virtual bool Is_Open() const override;
	virtual int Open(char const *filename, int rights=READ) override;
	virtual int Open(int rights=READ) override;
	virtual int Read(void *buffer, int len) override;
	virtual int Seek(int pos, int dir=SEEK_CUR) override;
	virtual int Size() override;
	virtual int Write(void const *buffer, int len) override;
	virtual void Close() override;

protected:

	File					*m_theFile; /// < The file
	Bool					m_fileExists;		///< TRUE if the file exists
	char					m_filePath[_MAX_PATH];  ///< the file name *and* path (relative)
	char					m_filename[_MAX_PATH];	///< The file name only

};


/*
** W3DFileSystem is a derived FileFactoryClass which
** uses GDI assets.
*/
class	W3DFileSystem : public FileFactoryClass {
public:
	W3DFileSystem();
	virtual ~W3DFileSystem() override;

	virtual FileClass * Get_File( char const *filename ) override;
	virtual void Return_File( FileClass *file ) override;

private:

	static void reprioritizeTexturesBySize();
	static void reprioritizeTexturesBySize(ArchivedDirectoryInfo& dirInfo);
};

extern W3DFileSystem *TheW3DFileSystem;