Game.h

#pragma once

#include <QGraphicsView>
#include <QGraphicsScene>
#include <QGraphicsLineItem>
#include <QTimer>
#include <QElapsedTimer>
#include <QSound>

#include "Pacman.h"
#include "Level.h"

class Game : public QGraphicsView 
{ 
	Q_OBJECT 
	
	enum game_state{READY, RUNNING, PAUSE, GAME_OVER};

	private:

		static Game* uniqueInstance;		// Singleton
		Game(QGraphicsView *parent=0);		// Singleton

        QGraphicsScene* _scene;
        Pacman* _player;
        QTimer _engine;
		game_state _state;
		QGraphicsPixmapItem* _ready_txt;	
		QGraphicsPixmapItem* _paused_txt;	
		QGraphicsPixmapItem* _gameover_txt;	
		
		void init();

	protected:

		virtual void keyPressEvent(QKeyEvent *e);

	public: 
		
		// singleton
		static Game* instance();

		// getters
		QGraphicsScene* scene(){return _scene;}
		Pacman* player(){return _player;}

	public slots:

        // advance game / next frame
        void advance();

		// tooglers
		void tooglePause();

		// reset game
		void reset();

		// start game
		void start();

		// game over
		void gameover();

		// ghost state updates
		void setGhostsVisible(bool visible);

		// game events
		void ballEat(bool big);
};