#pragma once
#include <SFML/System/Vector3.hpp>
#include <SFML/System/Vector2.hpp>
#include <Map.h>
#include "Old_map.h"
#include "Camera.h"


class RayCaster {
public:

	enum ERROR_CODES {
		SHARING_NOT_SUPPORTED = 800,
		OPENCL_NOT_SUPPORTED = 801,
		OPENCL_ERROR = 802,
		ERROR = 803
	};

	RayCaster();
	virtual ~RayCaster();

	virtual int init() = 0;

	virtual void assign_map(Old_Map *map) = 0;
	virtual void assign_camera(Camera *camera) = 0;
	virtual void create_viewport(int width, int height, float v_fov, float h_fov) = 0;
	virtual void assign_light(Light light) = 0;

	// draw will abstract the gl sharing and software rendering
	// methods of retrieving the screen buffer
	virtual void draw(sf::RenderWindow* window) = 0;

protected:

	sf::Sprite viewport_sprite;
	sf::Texture viewport_texture;
	

	// A reference to the map
	Old_Map *map;

	// The XY resolution of the viewport
	sf::Vector2<int> resolution;

	// The pixel array, maybe do RBGA? Are there even 4 byte data types?
	sf::Color *image;

	// The direction of the camera in POLAR coordinates
	sf::Vector3<float> camera_direction;

	// Convert the polar coordinates to CARTESIAN
	sf::Vector3<float> camera_direction_cartesian;

	// The world-space position of the camera
	sf::Vector3<float> camera_position;

    // The distance in units the view plane is from the iris point
    int view_plane_distance = 200;

    // Precalculated values for the view plane rays
    sf::Vector3f *view_plane_vectors;

};