Added getCameraPosition to Level because it is used very often.

level.cc

@@ -133,3 +133,7 @@ Object* Level::getCameraCenter() {
 Light* Level::getDirectionalLight() {
     return &directionalLight;
 }
+
+glm::vec3 Level::getCameraPosition() {
+   return cameraCenter->getPosition() + camera.getVector();
+}

level.hh

@@ -23,6 +23,7 @@ class Level {
         std::vector<Light> getLights();
         Object* getCameraCenter();
         Camera* getCamera();
+        glm::vec3 getCameraPosition();
     private:
         std::string filePath;
         std::vector<Object> objects;