/*****************************************************************************
 *	Game.h  																 *
 *																			 *
 *	XFX Game class definition file  										 *
 *	Copyright (c) XFX Team. All Rights Reserved 							 *
 *****************************************************************************/
#ifndef _XFX_GAME_
#define _XFX_GAME_

#include <System/Event.h>
#include <System/Types.h>

#include "Content/ContentManager.h"
#include "GameComponentCollection.h"
#include "GameServiceContainer.h"
#include "GameTime.h"
#include "GraphicsDeviceManager.h"
#include "Interfaces.h"

using namespace System;
using namespace System::Collections::Generic;

using namespace XFX::Content;
using namespace XFX::Graphics;

namespace XFX
{
	/**
	 * Provides basic graphics device initialization, game logic, and rendering code.
	 */
	class Game : public IDisposable, public Object
	{
	private:
		bool exiting;
		bool inRun;
		bool isActive;

		GameComponentCollection components;
		/*List<IDrawable*> currentlyDrawingComponents;
		List<IUpdateable*> currentlyUpdatingComponents;
		List<IDrawable*> drawableComponents;
		List<IUpdateable*> enabledUpdateable;
		List<IGameComponent*> notYetInitialized;*/
		GameServiceContainer services;
		bool disposed;
		GameTime gameTime;
		TimeSpan inactiveSleepTime;
		static const TimeSpan maximumElapsedTime;
		IGraphicsDeviceManager* graphicsManager;
		IGraphicsDeviceService* graphicsService; 

		static const long long DefaultTargetElapsedTicks;

	protected:
		virtual bool BeginDraw();
		virtual void BeginRun();
		virtual void Dispose(bool disposing);
		virtual void Draw(GameTime gameTime);
		virtual void EndDraw();
		virtual void EndRun();
		void Finalize();
		virtual void LoadContent();
		virtual void Initialize();
		virtual void OnActivated(Object * const sender, EventArgs * const args);
		virtual void OnDeactivated(Object * const sender, EventArgs * const args);
		virtual void OnExiting(Object * const sender, EventArgs * const args);
		virtual void UnloadContent();
		virtual void Update(GameTime gameTime);

	public:
		GameComponentCollection& Components();
		ContentManager* Content;
		GraphicsDevice* getGraphicsDevice();
		GameServiceContainer getServices();
		bool IsActive();

		bool IsFixedTimeStep;
		bool IsMouseVisible;
		TimeSpan TargetElapsedTime;

		EventHandler Activated;
		EventHandler Deactivated;
		EventHandler Disposed;
		EventHandler Exiting; 

		Game();
		virtual ~Game();

		void Dispose();
		void Exit();
		static const Type& GetType();
		void ResetElapsedTime();
		virtual void Run();
		void SuppressDraw();
		void Tick();
	};
	
	/**
	 * Base class for all XNA Framework game components.
	 */
	class GameComponent : public IGameComponent, public IUpdateable, public IDisposable, public Object
	{
	private:
		Game* _game;
		bool _disposed;
		bool _enabled;
		int _updateOrder;
		
	protected:
		virtual void Dispose(bool disposing);
		virtual ~GameComponent();

		virtual void OnEnabledChanged(Object * const sender, EventArgs * const args);
		virtual void OnUpdateOrderChanged(Object * const sender, EventArgs * const args);
		
	public:
		bool getEnabled() const;
		void setEnabled(const bool value);
		int getUpdateOrder() const;
		void setUpdateOrder(const int value);
		Game* getGame() const;

		EventHandler EnabledChanged;
		EventHandler UpdateOrderChanged;
		EventHandler Disposed;
		
		GameComponent(Game * const game);
		
		virtual void Dispose();
		static const Type& GetType();
		virtual void Initialize();
		virtual void Update(GameTime gameTime);
	};
	
	/**
	 * A game component that is notified when it needs to draw itself.
	 */
	class DrawableGameComponent : public GameComponent, public IDrawable
	{
	private:
		int _drawOrder;
		bool _visible;
		IGraphicsDeviceService* _graphicsService;
    
    protected:
    	void Dispose(bool disposing);
    	virtual void LoadContent();
		virtual void OnDrawOrderChanged(Object * const sender, EventArgs * const args);
		virtual void OnVisibleChanged(Object * const sender, EventArgs * const args);
    	virtual void UnloadContent();
    
    public:
    	int getDrawOrder() const; 
		void setDrawOrder(const int value);
    	GraphicsDevice* getGraphicsDevice() const;
    	bool getVisible() const;
		void setVisible(const bool value);

		EventHandler DrawOrderChanged;
		EventHandler VisibleChanged;
    
		DrawableGameComponent(Game * const game);
		virtual void Draw(GameTime gameTime);
		static const Type& GetType();
		void Initialize();
		virtual void Update(GameTime gameTime);
	};
}

#endif //_XFX_GAME_