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/* 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#ifndef SUPERNOVA_H
#define SUPERNOVA_H

#include "audio/audiostream.h"
#include "audio/mixer.h"
#include "audio/decoders/raw.h"
#include "common/array.h"
#include "common/events.h"
#include "common/random.h"
#include "common/scummsys.h"
#include "engines/engine.h"
#include "common/file.h"
#include "common/memstream.h"

#include "supernova/console.h"
#include "supernova/graphics.h"
#include "supernova/msn_def.h"
#include "supernova/rooms.h"


namespace Supernova {

struct ScreenBuffer {
	ScreenBuffer()
	    : _x(0)
	    , _y(0)
	    , _width(0)
	    , _height(0)
	    , _pitch(0)
	    , _pixels(NULL)
	{}

	byte *_pixels;
	int _x;
	int _y;
	int _width;
	int _height;
	int _pitch;
};
class ScreenBufferStack {
public:
	ScreenBufferStack();

	void push(int x, int y, int width, int height, int pitch = 320);
	void restore();

private:
	ScreenBuffer _buffer[8];
	ScreenBuffer *_last;
};

class SupernovaEngine : public Engine {
public:
	SupernovaEngine(OSystem *syst);
	~SupernovaEngine();

	virtual Common::Error run();

	Common::RandomSource *_rnd;
	Console *_console;
	Audio::SoundHandle _soundHandle;
	ScreenBufferStack _screenBuffer;
	byte _mouseNormal[256];
	byte _mouseWait[256];
	MSNImageDecoder _images[44];
	MSNImageDecoder *_currentImage;
	struct SoundSample {
		byte *_buffer;
		int _length;
	} _soundSamples[kAudioNumSamples];
	Common::MemoryReadStream *_soundMusic[2];
	Common::Event _event;
	bool _gameRunning;
	int _screenWidth;
	int _screenHeight;

	byte _imageIndex;
	byte _sectionIndex;
	byte _menuBrightness;
	byte _brightness;
	uint _delay;
	bool _messageDisplayed;
	int  _textCursorX;
	int  _textCursorY;
	int  _textColor;

	int  getDOSTicks();
	int  characterWidth(const char *text);
	void initData();
	void initPalette();
	void paletteFadeIn();
	void paletteFadeOut();
	void paletteBrightness();
	void updateEvents();
	void playSound(AudioIndex sample);
	void playSoundMod(int filenumber);
	void stopSound();
	void renderImage(MSNImageDecoder &image, int section);
	void renderImage(int filenumber, int section);
	void saveScreen(int x, int y, int width, int height);
	void restoreScreen();
	void renderRoom(Room &room);
	void renderMessage(const char *text, MessagePosition position = kMessageNormal);
	void removeMessage();
	void renderText(const char *text, int x, int y, byte color);
	void renderText(const char *text);
	void renderBox(int x, int y, int width, int height, byte color);
	void setColor63(byte value);
	void command_print();

	Common::MemoryReadStream *convertToMod(const char *filename, int version = 1);
};

}

#endif