main.cpp

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//            Copyright (C) 2004-2007 by The Allacrost Project
//                         All Rights Reserved
//
// This code is licensed under the GNU GPL version 2. It is free software
// and you may modify it and/or redistribute it under the terms of this license.
// See http://www.gnu.org/copyleft/gpl.html for details.

#include <ctime>
#ifdef __MACH__
  #include <unistd.h>
  #include <string>
#endif

#include "utils.h"
#include "defs.h"

#include "main_options.h"

#include "audio.h"
#include "video.h"
#include "input.h"
#include "script.h"
#include "system.h"
#include "global.h"
#include "mode_manager.h"

#include "boot.h"
#include "map.h"

using namespace std;
using namespace hoa_utils;
using namespace hoa_audio;
using namespace hoa_video;
using namespace hoa_mode_manager;
using namespace hoa_input;
using namespace hoa_system;
using namespace hoa_global;
using namespace hoa_script;
using namespace hoa_boot;
using namespace hoa_map;


void QuitAllacrost() {
  // NOTE: Even if the singleton objects do not exist when this function is called, invoking the
  // static Destroy() singleton function will do no harm (it checks that the object exists before deleting it).

  // Delete the mode manager first so that all game modes free their resources
  GameModeManager::SingletonDestroy();

  // Delete the global manager second to remove all object references corresponding to other engine subsystems
  GameGlobal::SingletonDestroy();

  // Delete all of the reamining independent engine components
  GameAudio::SingletonDestroy();
  GameInput::SingletonDestroy();
  GameScript::SingletonDestroy();
  GameSystem::SingletonDestroy();
  GameVideo::SingletonDestroy();
} // void QuitAllacrost()


bool InitializeEngine() {
  // Initialize SDL. The video, audio, and joystick subsystems are initialized elsewhere.
  if (SDL_Init(SDL_INIT_TIMER) != 0) {
    cerr << "MAIN ERROR: Unable to initialize SDL: " << SDL_GetError() << endl;
    return false;
  }

  // Create and initialize singleton class managers
  AudioManager = GameAudio::SingletonCreate();
  InputManager = GameInput::SingletonCreate();
  VideoManager = GameVideo::SingletonCreate();
  ScriptManager = GameScript::SingletonCreate();
  SystemManager = GameSystem::SingletonCreate();
  ModeManager = GameModeManager::SingletonCreate();
  GlobalManager = GameGlobal::SingletonCreate();

  if (VideoManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize VideoManager" << endl;
    return false;
  }

  if (VideoManager->LoadMenuSkin("black_sleet", "img/menus/black_sleet_skin.png", "img/menus/black_sleet_texture.png") == false) {
    return false;
  }

  if (VideoManager->LoadFont("img/fonts/vtc_switchblade_romance.ttf", "default", 18) == false) {
    return false;
  }

  VideoManager->SetFontShadowXOffset("default", 1);
  VideoManager->SetFontShadowYOffset("default", -2);
  VideoManager->SetFontShadowStyle("default", VIDEO_TEXT_SHADOW_BLACK);

  VideoManager->SetFontShadowXOffset("default", 1);
  VideoManager->SetFontShadowYOffset("default", -2);
  VideoManager->SetFontShadowStyle("default", VIDEO_TEXT_SHADOW_BLACK);

  if (!VideoManager->LoadFont("img/fonts/vtc_switchblade_romance.ttf", "map", 24)) {
    return false;
  }

  VideoManager->SetFontShadowXOffset("map", 0);
  VideoManager->SetFontShadowYOffset("map", 0);
  VideoManager->SetFontShadowStyle("map", VIDEO_TEXT_SHADOW_BLACK);

  if (!VideoManager->LoadFont("img/fonts/vtc_switchblade_romance.ttf", "battle", 20)) {
    return false;
  }

  VideoManager->SetFontShadowXOffset("battle", 1);
  VideoManager->SetFontShadowYOffset("battle", -2);
  VideoManager->SetFontShadowStyle("battle", VIDEO_TEXT_SHADOW_BLACK);

  // Font used to show damage received / given in battle mode
  if (!VideoManager->LoadFont("img/fonts/vtc_switchblade_romance.ttf", "battle_dmg", 24)) {
    return false;
  }

  VideoManager->SetFontShadowXOffset("battle_dmg", 1);
  VideoManager->SetFontShadowYOffset("battle_dmg", -2);
  VideoManager->SetFontShadowStyle("battle_dmg", VIDEO_TEXT_SHADOW_BLACK);

  if (AudioManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize AudioManager" << endl;
    return false;
  }
  if (ScriptManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize ScriptManager" << endl;
    return false;
  }
  hoa_defs::BindEngineToLua();
  if (ModeManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize ModeManager" << endl;
    return false;
  }
  if (SystemManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize SystemManager" << endl;
    return false;
  }
  if (InputManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize InputManager" << endl;
    return false;
  }
  if (GlobalManager->SingletonInitialize() == false) {
    cerr << "ERROR: unable to initialize GlobalManager" << endl;
    return false;
  }

  // Set the window title and icon name
  SDL_WM_SetCaption("Hero of Allacrost", "Hero of Allacrost");

  // Set the window icon
  #ifdef _WIN32
    SDL_WM_SetIcon(SDL_LoadBMP("img/logos/program_icon.bmp"), NULL);
  #else
    // Later, add an icon here for non-Windows systems (which support more than 32x32 .bmp files)
    SDL_WM_SetIcon(SDL_LoadBMP("img/logos/program_icon.bmp"), NULL);
  #endif

  // Hide the mouse cursor since we don't use or acknowledge mouse input from the user
  SDL_ShowCursor(SDL_DISABLE);

  // Enabled for multilingual keyboard support
  SDL_EnableUNICODE(1);

  // Ignore the events that we don't care about so they never appear in the event queue
  SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
  SDL_EventState(SDL_MOUSEBUTTONDOWN, SDL_IGNORE);
  SDL_EventState(SDL_MOUSEBUTTONUP, SDL_IGNORE);
  SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
  SDL_EventState(SDL_VIDEOEXPOSE, SDL_IGNORE);
  SDL_EventState(SDL_USEREVENT, SDL_IGNORE);

  SystemManager->InitializeTimers();

  return true;
} // bool InitializeEngine()



// Every great game begins with a single function :)
int32 main(int32 argc, char *argv[]) {
  // When the program exits, first the QuitAllacrost() function is called, followed by SDL_Quit()
  atexit(SDL_Quit);
  atexit(QuitAllacrost);

  // Change to the directory where the Allacrost data is stored
  #ifdef __MACH__
    string path;
    path = argv[0];
    // Remove the binary name
    path.erase(path.find_last_of('/'));
    // Remove the MacOS directory
    path.erase(path.find_last_of('/'));
    // Now the program should be in app/Contents
    path.append ("/Resources/");
    chdir(path.c_str());
  #elif defined(__linux__) || defined(__FreeBSD__)
    // Look for data files in DATADIR only if they are not available in the
    // current directory.
    if (ifstream("dat/config/settings.lua") == NULL)
      chdir(DATADIR);
  #endif

  // Initialize the random number generator (note: 'unsigned int' is a required usage in this case)
  srand(static_cast<unsigned int>(time(NULL)));

  // This variable will be set by the ParseProgramOptions function
  int32 return_code;

  // Parse command lines and exit out of the game if needed
  if (hoa_main::ParseProgramOptions(return_code, argc, argv) == false) {
    return return_code;
  }

  if (InitializeEngine() == false) {
    cerr << "ERROR: failed to initialize game engine, exiting..." << endl;
    return 1;
  }

  // This is the main loop for the game. The loop iterates once for every frame drawn to the screen.
  while (SystemManager->NotDone()) {
    // 1) Render the scene
    VideoManager->Clear();
    ModeManager->Draw();
    VideoManager->Display(SystemManager->GetUpdateTime());

    // 2) Process all new events
    InputManager->EventHandler();

    // 3) Update any streaming audio sources
    AudioManager->Update();

    // 4) Update timers for correct time-based movement operation
    SystemManager->UpdateTimers();

    // 5) Update the game status
    ModeManager->Update();
  } // while (SystemManager->NotDone())

  return EXIT_SUCCESS;
} // int32 main(int32 argc, char *argv[])

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