Add Directional Light to world class

src/Light.h

@@ -12,11 +12,15 @@ public:
 
     virtual void update() = 0;
 
-    void setActive(bool active) { isActive = active; }
+    void setActive(bool active) { 
+        isActive = active;
+        update();
+    }
     void setColor(glm::vec3 color) {
         lightColor = color; 
         update();
     }
+
     void setShaderProgram(ShaderProgram *shaderProgram) {
         this->shaderProgram = shaderProgram;
         update();
@@ -50,12 +54,14 @@ public:
         this->position = position;
         update();
     }
+
     void setId(unsigned int id) { lightId = id; }
 
-    void update();
 
 private:
 
+    void update() override;
+    std::string _getStructMemberName();
     unsigned int lightId;
 
     glm::vec3 position = glm::vec3(0.0f, 0.0f, 0.0f);
@@ -64,3 +70,25 @@ private:
     float K_q = 0.032f;
 
 };
+
+class DirectionalLight : public Light {
+
+public:
+
+    DirectionalLight() = default;
+    DirectionalLight(ShaderProgram *shaderProgram);
+
+    void setDirection(glm::vec3 direction) { 
+        this->direction = direction;
+        update();
+    }
+
+private:
+
+    void update() override;
+
+    bool isActive = true;
+
+    glm::vec3 direction = glm::vec3(-0.2f, -1.0f, -0.3f);
+
+};