#ifndef _VIEW_H
#define _VIEW_H

#include "ViewBase.h"
#include "OverlayBase.h"
#include "mathlib.h"
#include "Sprite.h"
#include "EntityBase.h"
#include "SimpleConsoleOverlay.h"
#include "AsteroidsEnums.h"

namespace asteroids {

struct ShipEntity;
struct AsteroidEntity;
struct RocketEntity;

struct BackgroundStar {
	vector3d position;
};

/** \brief Performs the actual drawing based on Camera and Model
 */
class View : public Engine::ViewBase { 
	public:
		virtual ~View() {};

	protected:
		/** \brief Initializes the system */
		virtual int OnInit (int argc, char* argv[]);
		virtual void OnDestroy ();

		/** \brief Updates the camera for further drawing */
		virtual void UpdateCamera ();

	private:
		void DrawUi();

		void DrawPageTitle(const std::string &title);

		void DrawUiMainMenu();
		void DrawUiGameRunning();
		void DrawUiGameOver();
		void DrawUiLevelComplete();
		void DrawUiGamePaused();
		void DrawUiPlayerDied();
		void DrawHighscoreEntry(float x, float y, float entry_width, const std::string &name, unsigned int points);
		void DrawUiHighscore();
		void DrawUiOptions();
		void DrawUiEnterPlayername();

		virtual void Draw ();
		virtual void DrawWorld ();
		void DrawStars ();

		void DrawEntity (Engine::EntityBase *entity);
		void DrawShip (ShipEntity *ship);
		void DrawAsteroid (AsteroidEntity *asteroid);
		void DrawRocket (RocketEntity *asteroid);
		void DrawShipPart (Engine::EntityBase *entity);

		// boost::shared_ptr<MenuOverlay> mMenuOverlay;
		// boost::shared_ptr<Engine::SimpleConsoleOverlay> mConsoleOverlay;

		std::vector<BackgroundStar> mBackgroundStars;

		std::vector<unsigned int> mShipPartsEntityIds;

		std::stack<ViewState> mViewStateStack;

		void PushViewState (const ViewState state) {
			Engine::LogDebug ("Pushing ViewState %s", GetStringViewState(state));
			mViewStateStack.push(state);
		}
		ViewState GetViewState () {
			return mViewStateStack.top();
		}
		void PopViewState () {
			// Warning: you must not query for an invalid enum with
			// GetStringENUM_NAME!
			Engine::LogDebug("Popping ViewState: %s remainging: %u", GetStringViewState(mViewStateStack.top()), mViewStateStack.size());

			mViewStateStack.pop();
		}

		// \todo [high] add Resource Manager!
		Engine::Sprite mGUIShipSprite;
		Engine::Sprite mAsteroidSprite;
		Engine::Sprite mShipSprite;
		Engine::Sprite mShipThrustSprite;
		Engine::Sprite mShipPartsSprite;
		
		float screen_left;
		float screen_right;
		float screen_top;
		float screen_bottom;

		int button_width;
		int button_height;

		virtual bool OnReceiveEvent (const Engine::EventBasePtr &event);
};

}

#endif // _VIEW_H