#ifndef JOY_CAM_HPP
#define JOY_CAM_HPP

#include <SFML/System/Vector3.hpp>
#include <SFML/Window/Event.hpp>

#include <SFMLTools/Camera.hpp>


namespace sft
{

////////////////////////////////////////////////////////////
/// \ingroup sfmltools
/// \brief Camera controlled by a joystick controller
////////////////////////////////////////////////////////////
class JoyCam : public Camera
{

    public:
        ////////////////////////////////////////////////////
        /// \brief Usual constructor
        /// \param i id of the sfml controller that we will
        ///        be listening to
        ////////////////////////////////////////////////////
        JoyCam(int i);

        ///////////////////////////////////////////////////
        /// \brief calls gluLookAt with the good parameters
        ///////////////////////////////////////////////////
        void look() const;

        ///////////////////////////////////////////////////
        /// \brief computes the next step of the camera
        /// \param width width of the window
        /// \param height height of the window
        ///////////////////////////////////////////////////
        void nextStep(int width, int height);

    private:
        float speed;                     ///< speed of the camera
        float sensitivity;               ///< sensitivity of the mouse

        sf::Vector3f position;     ///< position of the center of the camera
        sf::Vector3f target;       ///< a point that the camera is staring at
        sf::Vector3f forward;      ///< a vector from the center to the target
        sf::Vector3f left;         ///< a vector orthogonal to forward

        double theta;                     ///< theta angle from spheric coordinates
        double phi;                       ///< phi angle from spheric coordinates

        int joy;                          ///< id of the joystick

        ////////////////////////////////////////////////////
        /// \brief computes the vector from angles
        ///
        /// Computes the value of position, target, forward and left
        /// using only theta and phi
        ////////////////////////////////////////////////////
        void vectorsFromAngles();

};

} // namespace sft

#endif // JOY_CAM_HPP