/* 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/>.
 *
 */

#ifndef EMI_ENGINE_H
#define EMI_ENGINE_H

#include "engines/grim/grim.h"
#include "engines/grim/emi/layer.h"

namespace Grim {

class TextObject;
class Actor;

class EMIEngine : public GrimEngine {
public:
	EMIEngine(OSystem *syst, uint32 gameFlags, GrimGameType gameType, Common::Platform platform, Common::Language language);
	virtual ~EMIEngine();

	const char *getUpdateFilename() override;

	void pushText();
	void popText();
	void purgeText();

	void invalidateActiveActorsList() override;
	void invalidateTextObjectsSortOrder() override;
	void invalidateSortOrder();
	void sortActiveActorsList();
	void temporaryStoreSaveGameImage();
	void storeSaveGameImage(SaveGame *state) override;

private:
	LuaBase *createLua() override;
	void drawNormalMode() override;
	void updateDrawMode() override;
	static bool compareTextLayer(const TextObject *x, const TextObject *y);
	void drawTextObjects() override;
	static bool compareActor(const Actor *x, const Actor *y);
	void sortTextObjects();
	static bool compareLayer(const Layer *x, const Layer *y);
	void sortLayers();

	Common::List<TextObject *> _textObjects;
	Common::List<Layer *> _layers;

	bool _textObjectsSortOrderInvalidated;
	bool _sortOrderInvalidated;
};

extern EMIEngine *g_emi;

} // end of namespace Grim

#endif