// =====================================================================================
// Copyright (c) 2022-2024 Dave Bernazzani (wavemotion-dave)
//
// Copying and distribution of this emulator, it's source code and associated 
// readme files, with or without modification, are permitted in any medium without 
// royalty provided this copyright notice is used and wavemotion-dave (Phoenix-Edition),
// Alekmaul (original port) and Greg Stanton (ProSystem Emulator) are thanked profusely.
//
// A7800DS emulator is offered as-is, without any warranty.
//
// The original GPL license:
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
// =====================================================================================
#include <stdio.h>
#include <time.h>
#include <fat.h>
#include <nds.h>
#include <maxmod9.h>

#include "main.h"
#include "intro.h"
#include "config.h"
#include "a7800utils.h"
#include "soundbank.h"

// Program entry point
int main(int argc, char **argv) 
{
  // Init sound
  consoleDemoInit();
  soundEnable();
  lcdMainOnTop();

  // Init Fat
	if (!fatInitDefault()) 
    {
		iprintf("Unable to initialize libfat!\n");
		return -1;
	}

  // Init Timer
  dsInitTimer();
  dsInstallSoundEmuFIFO();
  
  // Intro and main screen
  intro_logo();  
  dsInitScreenMain();
  emu_state = A7800_MENUINIT;
  
  srand(time(NULL));
    
  LoadConfig();
  
  bios_check_and_load();
  
    //load rom file via args if a rom path is supplied
  if(argc > 1) 
  {
    dsShowScreenMain(true);
    dsLoadGame(argv[1]);
    emu_state = A7800_PLAYINIT;
  }
  else
  {
      chdir("/roms");    // Try to start in roms area... doesn't matter if it fails
      chdir("a7800");    // And try to start in the subdir /a7800... doesn't matter if it fails.
      chdir("a78");      // And try to start in the subdir /a78... doesn't matter if it fails.
  }
  
  // Main loop of emulation
  dsMainLoop();
  
  // Free memory to be correct 
  dsFreeEmu();
  
  return(0);
}