Don't know what is in this one

include/Ray.h

@@ -0,0 +1,43 @@
+#pragma once
+#include <SFML/Graphics.hpp>
+#include <iostream>
+#include "Map.h"
+
+class Ray {
+
+		private:
+
+				// The Tail of the vector
+				sf::Vector3<float> origin
+
+				// Direction / Length of the vector
+				sf::Vector3<float> direction;
+
+				// The incrementing points at which T intersects int(X, Y, Z) points
+				sf::Vector3<float> intersction_t;
+
+				// The speed at which the ray climbs.
+				// Take the slope of the line (1 / cartesian.x/y/z) = delta_t.x/y/z
+				sf::Vector3<float> delta_t;
+
+				// The 3d voxel position the ray is currently at
+				sf::Vector3<int> voxel;
+
+				// Reference to the voxel map
+				Map *m;
+
+				// The dimensions of the voxel map
+				sf::Vector3<int> dimensions;
+
+		public:
+
+				public Ray(
+						Map *m,
+						sf::Vector2<int> resolution,
+						sf::Vector2<int> pixel,
+						sf::Vector3<float> camera_position,
+						sf::Vector3<float> ray_direction
+				);
+
+				public sf::Color Cast();
+}

include/util.hpp

@@ -0,0 +1,31 @@
+#pragma once
+#include <SFML/Graphics.hpp>
+
+struct fps_counter {
+public:
+		fps_counter(){
+				if(!f.loadFromFile("../assets/fonts/Arial.ttf")){
+						std::cout << "couldn't find the fallback Arial font "
+								         "in ../assets/fonts/" << std::endl;
+				} else {
+						t.setFont(f);
+				}
+		}
+
+		void frame(double delta_time){
+				frame_count++;
+				fps_average += (delta_time - fps_average) / frame_count;
+		}
+		
+		void draw(sf::RenderWindow *r){
+				t.setString(std::to_string(fps_average));
+				r->draw(t);
+		}
+
+private:
+		sf::Font f;
+		sf::Text t;
+		int frame_count = 0;
+		double fps_average = 0;
+};
+