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/*
* Copyright 2010-2015 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom 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.
*
* OpenXcom 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 OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Game.h"
#include <cmath>
#include <sstream>
#include <SDL_mixer.h>
#include "Adlib/adlplayer.h"
#include "State.h"
#include "Screen.h"
#include "Sound.h"
#include "Music.h"
#include "Language.h"
#include "Logger.h"
#include "../Interface/Cursor.h"
#include "../Interface/FpsCounter.h"
#include "../Resource/ResourcePack.h"
#include "../Ruleset/Ruleset.h"
#include "../Savegame/SavedGame.h"
#include "Palette.h"
#include "Action.h"
#include "Exception.h"
#include "InteractiveSurface.h"
#include "Options.h"
#include "CrossPlatform.h"
#include "FileMap.h"
#include "../Menu/TestState.h"
namespace OpenXcom
{
const double Game::VOLUME_GRADIENT = 10.0;
/**
* Starts up SDL with all the subsystems and SDL_mixer for audio processing,
* creates the display screen and sets up the cursor.
* @param title Title of the game window.
*/
Game::Game(const std::string &title) : _screen(0), _cursor(0), _lang(0), _res(0), _save(0), _rules(0), _quit(false), _init(false), _mouseActive(true), _timeUntilNextFrame(0)
{
Options::reload = false;
Options::mute = false;
// Initialize SDL
if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
throw Exception(SDL_GetError());
}
Log(LOG_INFO) << "SDL initialized successfully.";
// Initialize SDL_mixer
if (SDL_InitSubSystem(SDL_INIT_AUDIO) < 0)
{
Log(LOG_ERROR) << SDL_GetError();
Log(LOG_WARNING) << "No sound device detected, audio disabled.";
Options::mute = true;
}
else
{
initAudio();
}
// trap the mouse inside the window
SDL_WM_GrabInput(Options::captureMouse);
// Set the window icon
CrossPlatform::setWindowIcon(103, FileMap::getFilePath("openxcom.png"));
// Set the window caption
SDL_WM_SetCaption(title.c_str(), 0);
SDL_EnableUNICODE(1);
// Create display
_screen = new Screen();
// Create cursor
_cursor = new Cursor(9, 13);
// Create invisible hardware cursor to workaround bug with absolute positioning pointing devices
SDL_ShowCursor(SDL_ENABLE);
Uint8 cursor = 0;
SDL_SetCursor(SDL_CreateCursor(&cursor, &cursor, 1,1,0,0));
// Create fps counter
_fpsCounter = new FpsCounter(15, 5, 0, 0);
// Create blank language
_lang = new Language();
_timeOfLastFrame = 0;
}
/**
* Deletes the display screen, cursor, states and shuts down all the SDL subsystems.
*/
Game::~Game()
{
Sound::stop();
Music::stop();
for (std::list<State*>::iterator i = _states.begin(); i != _states.end(); ++i)
{
delete *i;
}
SDL_FreeCursor(SDL_GetCursor());
delete _cursor;
delete _lang;
delete _res;
delete _save;
delete _rules;
delete _screen;
delete _fpsCounter;
Mix_CloseAudio();
SDL_Quit();
}
/**
* The state machine takes care of passing all the events from SDL to the
* active state, running any code within and blitting all the states and
* cursor to the screen. This is run indefinitely until the game quits.
*/
void Game::run()
{
enum ApplicationState { RUNNING = 0, SLOWED = 1, PAUSED = 2 } runningState = RUNNING;
static const ApplicationState kbFocusRun[4] = { RUNNING, RUNNING, SLOWED, PAUSED };
static const ApplicationState stateRun[4] = { SLOWED, PAUSED, PAUSED, PAUSED };
// this will avoid processing SDL's resize event on startup, workaround for the heap allocation error it causes.
bool startupEvent = Options::allowResize;
while (!_quit)
{
// Clean up states
while (!_deleted.empty())
{
delete _deleted.back();
_deleted.pop_back();
}
// Initialize active state
if (!_init)
{
_init = true;
_states.back()->init();
// Unpress buttons
_states.back()->resetAll();
// Refresh mouse position
SDL_Event ev;
int x, y;
SDL_GetMouseState(&x, &y);
ev.type = SDL_MOUSEMOTION;
ev.motion.x = x;
ev.motion.y = y;
Action action = Action(&ev, _screen->getXScale(), _screen->getYScale(), _screen->getCursorTopBlackBand(), _screen->getCursorLeftBlackBand());
_states.back()->handle(&action);
}
// Process events
while (SDL_PollEvent(&_event))
{
if (CrossPlatform::isQuitShortcut(_event))
_event.type = SDL_QUIT;
switch (_event.type)
{
case SDL_QUIT:
quit();
break;
case SDL_ACTIVEEVENT:
switch (reinterpret_cast<SDL_ActiveEvent*>(&_event)->state)
{
case SDL_APPACTIVE:
runningState = reinterpret_cast<SDL_ActiveEvent*>(&_event)->gain ? RUNNING : stateRun[Options::pauseMode];
break;
case SDL_APPMOUSEFOCUS:
// We consciously ignore it.
break;
case SDL_APPINPUTFOCUS:
runningState = reinterpret_cast<SDL_ActiveEvent*>(&_event)->gain ? RUNNING : kbFocusRun[Options::pauseMode];
break;
}
break;
case SDL_VIDEORESIZE:
if (Options::allowResize)
{
if (!startupEvent)
{
Options::newDisplayWidth = Options::displayWidth = std::max(Screen::ORIGINAL_WIDTH, _event.resize.w);
Options::newDisplayHeight = Options::displayHeight = std::max(Screen::ORIGINAL_HEIGHT, _event.resize.h);
int dX = 0, dY = 0;
Screen::updateScale(Options::battlescapeScale, Options::battlescapeScale, Options::baseXBattlescape, Options::baseYBattlescape, false);
Screen::updateScale(Options::geoscapeScale, Options::geoscapeScale, Options::baseXGeoscape, Options::baseYGeoscape, false);
for (std::list<State*>::iterator i = _states.begin(); i != _states.end(); ++i)
{
(*i)->resize(dX, dY);
}
_screen->resetDisplay();
}
else
{
startupEvent = false;
}
}
break;
case SDL_MOUSEMOTION:
case SDL_MOUSEBUTTONDOWN:
case SDL_MOUSEBUTTONUP:
// Skip mouse events if they're disabled
if (!_mouseActive) continue;
// re-gain focus on mouse-over or keypress.
runningState = RUNNING;
// Go on, feed the event to others
default:
Action action = Action(&_event, _screen->getXScale(), _screen->getYScale(), _screen->getCursorTopBlackBand(), _screen->getCursorLeftBlackBand());
_screen->handle(&action);
_cursor->handle(&action);
_fpsCounter->handle(&action);
_states.back()->handle(&action);
if (action.getDetails()->type == SDL_KEYDOWN)
{
// "ctrl-g" grab input
if (action.getDetails()->key.keysym.sym == SDLK_g && (SDL_GetModState() & KMOD_CTRL) != 0)
{
Options::captureMouse = (SDL_GrabMode)(!Options::captureMouse);
SDL_WM_GrabInput(Options::captureMouse);
}
else if (Options::debug)
{
if (action.getDetails()->key.keysym.sym == SDLK_t && (SDL_GetModState() & KMOD_CTRL) != 0)
{
setState(new TestState);
}
// "ctrl-u" debug UI
else if (action.getDetails()->key.keysym.sym == SDLK_u && (SDL_GetModState() & KMOD_CTRL) != 0)
{
Options::debugUi = !Options::debugUi;
_states.back()->redrawText();
}
}
}
break;
}
}
// Process rendering
if (runningState != PAUSED)
{
// Process logic
_states.back()->think();
_fpsCounter->think();
if (Options::FPS > 0 && !(Options::useOpenGL && Options::vSyncForOpenGL))
{
// Update our FPS delay time based on the time of the last draw.
int fps = SDL_GetAppState() & SDL_APPINPUTFOCUS ? Options::FPS : Options::FPSInactive;
_timeUntilNextFrame = (1000.0f / fps) - (SDL_GetTicks() - _timeOfLastFrame);
}
else
{
_timeUntilNextFrame = 0;
}
if (_init && _timeUntilNextFrame <= 0)
{
// make a note of when this frame update occured.
_timeOfLastFrame = SDL_GetTicks();
_fpsCounter->addFrame();
_screen->clear();
std::list<State*>::iterator i = _states.end();
do
{
--i;
}
while (i != _states.begin() && !(*i)->isScreen());
for (; i != _states.end(); ++i)
{
(*i)->blit();
}
_fpsCounter->blit(_screen->getSurface());
_cursor->blit(_screen->getSurface());
_screen->flip();
}
}
// Save on CPU
switch (runningState)
{
case RUNNING:
SDL_Delay(1); //Save CPU from going 100%
break;
case SLOWED: case PAUSED:
SDL_Delay(100); break; //More slowing down.
}
}
Options::save();
}
/**
* Stops the state machine and the game is shut down.
*/
void Game::quit()
{
// Always save ironman
if (_save != 0 && _save->isIronman() && !_save->getName().empty())
{
std::string filename = CrossPlatform::sanitizeFilename(Language::wstrToFs(_save->getName())) + ".sav";
_save->save(filename);
}
_quit = true;
}
/**
* Changes the audio volume of the music and
* sound effect channels.
* @param sound Sound volume, from 0 to MIX_MAX_VOLUME.
* @param music Music volume, from 0 to MIX_MAX_VOLUME.
* @param ui UI volume, from 0 to MIX_MAX_VOLUME.
*/
void Game::setVolume(int sound, int music, int ui)
{
if (!Options::mute)
{
if (sound >= 0)
{
sound = volumeExponent(sound) * (double)SDL_MIX_MAXVOLUME;
Mix_Volume(-1, sound);
// channel 3: reserved for ambient sound effect.
Mix_Volume(3, sound / 2);
}
if (music >= 0)
{
music = volumeExponent(music) * (double)SDL_MIX_MAXVOLUME;
Mix_VolumeMusic(music);
}
if (ui >= 0)
{
ui = volumeExponent(ui) * (double)SDL_MIX_MAXVOLUME;
Mix_Volume(1, ui);
Mix_Volume(2, ui);
}
}
}
double Game::volumeExponent(int volume)
{
return (exp(log(Game::VOLUME_GRADIENT + 1.0) * volume / (double)SDL_MIX_MAXVOLUME) -1.0 ) / Game::VOLUME_GRADIENT;
}
/**
* Returns the display screen used by the game.
* @return Pointer to the screen.
*/
Screen *Game::getScreen() const
{
return _screen;
}
/**
* Returns the mouse cursor used by the game.
* @return Pointer to the cursor.
*/
Cursor *Game::getCursor() const
{
return _cursor;
}
/**
* Returns the FpsCounter used by the game.
* @return Pointer to the FpsCounter.
*/
FpsCounter *Game::getFpsCounter() const
{
return _fpsCounter;
}
/**
* Pops all the states currently in stack and pushes in the new state.
* A shortcut for cleaning up all the old states when they're not necessary
* like in one-way transitions.
* @param state Pointer to the new state.
*/
void Game::setState(State *state)
{
while (!_states.empty())
{
popState();
}
pushState(state);
_init = false;
}
/**
* Pushes a new state into the top of the stack and initializes it.
* The new state will be used once the next game cycle starts.
* @param state Pointer to the new state.
*/
void Game::pushState(State *state)
{
_states.push_back(state);
_init = false;
}
/**
* Pops the last state from the top of the stack. Since states
* can't actually be deleted mid-cycle, it's moved into a separate queue
* which is cleared at the start of every cycle, so the transition
* is seamless.
*/
void Game::popState()
{
_deleted.push_back(_states.back());
_states.pop_back();
_init = false;
}
/**
* Returns the language currently in use by the game.
* @return Pointer to the language.
*/
Language *Game::getLanguage() const
{
return _lang;
}
/**
* Changes the language currently in use by the game.
* @param filename Filename of the language file.
*/
void Game::loadLanguage(const std::string &filename)
{
std::ostringstream ss;
ss << "Language/" << filename << ".yml";
ExtraStrings *strings = 0;
std::map<std::string, ExtraStrings *> extraStrings = _rules->getExtraStrings();
if (!extraStrings.empty())
{
if (extraStrings.find(filename) != extraStrings.end())
{
strings = extraStrings[filename];
}
// Fallback
else if (extraStrings.find("en-US") != extraStrings.end())
{
strings = extraStrings["en-US"];
}
else if (extraStrings.find("en-GB") != extraStrings.end())
{
strings = extraStrings["en-GB"];
}
else
{
strings = extraStrings.begin()->second;
}
}
_lang->load(FileMap::getFilePath(ss.str()), strings);
Options::language = filename;
}
/**
* Returns the resource pack currently in use by the game.
* @return Pointer to the resource pack.
*/
ResourcePack *Game::getResourcePack() const
{
return _res;
}
/**
* Sets a new resource pack for the game to use.
* @param res Pointer to the resource pack.
*/
void Game::setResourcePack(ResourcePack *res)
{
delete _res;
_res = res;
}
/**
* Returns the saved game currently in use by the game.
* @return Pointer to the saved game.
*/
SavedGame *Game::getSavedGame() const
{
return _save;
}
/**
* Sets a new saved game for the game to use.
* @param save Pointer to the saved game.
*/
void Game::setSavedGame(SavedGame *save)
{
delete _save;
_save = save;
}
/**
* Returns the ruleset currently in use by the game.
* @return Pointer to the ruleset.
*/
Ruleset *Game::getRuleset() const
{
return _rules;
}
/**
* Loads the specified list of rulesets
*/
void Game::loadRulesets()
{
_rules = new Ruleset();
const std::vector< std::vector<std::string> > &rulesets(FileMap::getRulesets());
for (int i = 0; rulesets.size() > i; ++i)
{
try
{
_rules->loadModRulesets(rulesets[i], i);
}
catch (YAML::Exception &e)
{
throw Exception("failed to load ruleset: " + std::string(e.what()));
}
}
_rules->sortLists();
}
/**
* Sets whether the mouse is activated.
* If it is, mouse events are processed, otherwise
* they are ignored and the cursor is hidden.
* @param active Is mouse activated?
*/
void Game::setMouseActive(bool active)
{
_mouseActive = active;
_cursor->setVisible(active);
}
/**
* Returns whether current state is *state
* @param state The state to test against the stack state
* @return Is state the current state?
*/
bool Game::isState(State *state) const
{
return !_states.empty() && _states.back() == state;
}
/**
* Checks if the game is currently quitting.
* @return whether the game is shutting down or not.
*/
bool Game::isQuitting() const
{
return _quit;
}
/**
* Loads the most appropriate language
* given current system and game options.
*/
void Game::defaultLanguage()
{
std::string defaultLang = "en-US";
// No language set, detect based on system
if (Options::language.empty())
{
std::string locale = CrossPlatform::getLocale();
std::string lang = locale.substr(0, locale.find_first_of('-'));
// Try to load full locale
try
{
loadLanguage(locale);
}
catch (std::exception)
{
// Try to load language locale
try
{
loadLanguage(lang);
}
// Give up, use default
catch (std::exception)
{
loadLanguage(defaultLang);
}
}
}
else
{
// Use options language
try
{
loadLanguage(Options::language);
}
// Language not found, use default
catch (std::exception)
{
loadLanguage(defaultLang);
}
}
}
/**
* Initializes the audio subsystem.
*/
void Game::initAudio()
{
Uint16 format;
if (Options::audioBitDepth == 8)
format = AUDIO_S8;
else
format = AUDIO_S16SYS;
if (Mix_OpenAudio(Options::audioSampleRate, format, 2, 1024) != 0)
{
Log(LOG_ERROR) << Mix_GetError();
Log(LOG_WARNING) << "No sound device detected, audio disabled.";
Options::mute = true;
}
else
{
Mix_AllocateChannels(16);
// Set up UI channels
Mix_ReserveChannels(4);
Mix_GroupChannels(1, 2, 0);
Log(LOG_INFO) << "SDL_mixer initialized successfully.";
setVolume(Options::soundVolume, Options::musicVolume, Options::uiVolume);
}
}
}