feat: raycasting part 1

src/Game.hpp

@@ -2,6 +2,10 @@
 #define GAME_HPP
 
 #include <SFML/Graphics.hpp>
+#include <SFML/Graphics/PrimitiveType.hpp>
+#include <SFML/Graphics/VertexArray.hpp>
+#include <SFML/Graphics/VertexBuffer.hpp>
+#include <SFML/System/Vector2.hpp>
 
 #include "DebugUI.hpp"
 #include "GridLines.hpp"
@@ -14,6 +18,20 @@ constexpr int HEIGHT = 1080;
 constexpr int DEBUG_REFRESH_RATE_IN_MS = 250;
 constexpr float ASPECT = 16.f / 9.f;
 
+struct Ray {
+  sf::Vector2f origin;
+  sf::Vector2f direction;
+  float angle;
+
+  Ray(sf::Vector2f origin, sf::Vector2f target) {
+    this->origin = origin;
+    this->direction = target - origin;
+    angle = direction.angleTo(origin).asDegrees();
+  };
+
+  Ray(float angle, float length) {}; // TODO
+};
+
 class Game {
 public:
   Game();
@@ -28,6 +46,10 @@ private:
   GridLines gridLines;
   Walls walls;
 
+  sf::VertexArray rayVertices;
+
+  float intersects(Ray ray, Wall wall);
+
   void onResize();
   void processEvents();
   void update(double dt);