[FEATURE] multiple light support

src/entities/light.h

@@ -13,13 +13,18 @@ namespace entities
 	private:
 		glm::vec3 position;
 		glm::vec3 color;
+		glm::vec3 attenuation = { 1, 0, 0 };
 
 	public:
 		Light(const glm::vec3& position, const glm::vec3& color) : position(position), color(color) { }
+		Light(const glm::vec3& position, const glm::vec3& color, const glm::vec3& attenuation)
+			: position(position), color(color), attenuation(attenuation) { }
 
 		glm::vec3 GetPosition() const { return position; }
 		void setPosition(const glm::vec3& position) { this->position = position; }
 		glm::vec3 GetColor() const { return color; }
 		void setColor(const glm::vec3& color) { this->color = color; }
+		glm::vec3 GetAttenuation() const { return attenuation; }
+		void SetAttenuation(const glm::vec3& attenuation) { this->attenuation = attenuation; }
 	};
 }