/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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/>.
 *
 *              Originally written by Syn9 in FreeBASIC with SDL
 *              http://syn9.thehideoutgames.com/index_backup.php
 *
 *            Ported to plain C for GCW-Zero handheld by Dmitry Smagin
 *                http://github.com/dmitrysmagin/griffon_legend
 *
 *
 *                 Programming/Graphics: Daniel "Syn9" Kennedy
 *                     Music/Sound effects: David Turner
 *
 *                   Beta testing and gameplay design help:
 *                    Deleter, Cha0s, Aether Fox, and Kiz
 *
 */

#include "common/config-manager.h"
#include "common/debug.h"
#include "common/debug-channels.h"
#include "common/error.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/system.h"
#include "common/translation.h"
#include "graphics/pixelformat.h"

#include "common/text-to-speech.h"

#include "engines/util.h"

#include "griffon/griffon.h"
#include "griffon/console.h"

namespace Griffon {

GriffonEngine::GriffonEngine(OSystem *syst) : Engine(syst) {
	const Common::FSNode gameDataDir(ConfMan.get("path"));
	SearchMan.addSubDirectoryMatching(gameDataDir, "sound");

	_rnd = new Common::RandomSource("griffon");

	_console = nullptr;
	_mixer = nullptr;

	_shouldQuit = false;
	_gameMode = kGameModeIntro;

	_musicChannel = -1;
	_menuChannel = -1;

	_cloudAngle = 0.0f;

	_dontDrawOver = false;

	_firsty = 0;
	_lasty = 0;
	_saveSlot = 0;

	_ticks = g_system->getMillis();
	_ticksAtPauseStart = 0;

	for (int i = 0; i < 33; ++i) {
		for (int j = 0; j < 6; ++j) {
			_objectInfo[i].nFrames = 0;
			_objectInfo[i].xTiles = 0;
			_objectInfo[i].yTiles = 0;
			_objectInfo[i].speed = 0;
			_objectInfo[i].type = 0;
			_objectInfo[i].script = 0;
		}
	}

	for (int i = 0; i < 256; ++i) {
		_objectFrame[i][0] = 0;
		_objectFrame[i][1] = 0;
	}

	// Synchronize the sound settings from ScummVM
	syncSoundSettings();
}

GriffonEngine::~GriffonEngine() {
	delete _rnd;
	//delete _console; Debugger is deleted by Engine
}

void GriffonEngine::syncSoundSettings() {
	Engine::syncSoundSettings();

	bool mute = false;
	config.music = config.effects = false;

	if (ConfMan.hasKey("mute"))
		mute = ConfMan.getBool("mute");

	if (!mute) {
		config.music = !ConfMan.getBool("music_mute");
		config.effects = !ConfMan.getBool("sfx_mute");
	}

	config.musicVol = ConfMan.getInt("music_volume");
	config.effectsVol = ConfMan.getInt("sfx_volume");
}

void GriffonEngine::saveConfig() {
	ConfMan.setBool("mute", !(config.music || config.effectsVol));
	ConfMan.setBool("music_mute", !config.music);
	ConfMan.setBool("sfx_mute", !config.effects);
	ConfMan.setInt("music_volume", config.musicVol);
	ConfMan.setInt("sfx_volume", config.effectsVol);

	ConfMan.flushToDisk();
}

Common::Error GriffonEngine::run() {
	Common::TextToSpeechManager *ttsMan = g_system->getTextToSpeechManager();
	if (ttsMan != nullptr) {
		ttsMan->setLanguage("en");
		ttsMan->enable(ConfMan.getBool("tts_enabled"));
	}

	initGraphics(320, 240, new Graphics::PixelFormat(4, 8, 8, 8, 8, 24, 16, 8, 0));

	_mixer = g_system->getMixer();

	_console = new Console();
	setDebugger(_console);

	initialize();

	if (ConfMan.hasKey("save_slot")) {
		_saveSlot = ConfMan.getInt("save_slot");
		loadGameState(_saveSlot);

		_gameMode = kGameModeLoadGame;
	} else {
		showLogos();
		_gameMode = kGameModeIntro;
	}

	if (_shouldQuit)
		return Common::kNoError;

	while (!_shouldQuit) {
		switch (_gameMode) {
		case kGameModeIntro:
		case kGameModePlay:
			title(0);
			break;

		case kGameModeNewGame:
			newGame();
			break;

		case kGameModeLoadGame:
			_player.walkSpeed = 1.1f;
			_animSpeed = 0.5f;
			_attacking = false;
			_player.attackSpeed = 1.5f;

			_playingGardens = false;
			_playingBoss = false;

			haltSoundChannel(-1);

			_secsInGame = 0;
			loadMap(_curMap);
			mainLoop();
			break;

		default:
			error("Bad game mode: %d", _gameMode);
		}
	}

	return Common::kNoError;
}

void GriffonEngine::pauseEngineIntern(bool pause) {
	if (pause) {
		_ticksAtPauseStart = _ticks;
	} else {
		uint32 diff = _system->getMillis() - _ticksAtPauseStart;
		_ticks += diff;
		_nextTicks += diff;
	}
}

}
