[ADD] made collision work

src/entities/main_character.h

@@ -32,5 +32,7 @@ namespace entities
 		* @return: Vector with the adjusted side_speed, down_speed, and movement_speed
 		*/
 		glm::vec3 Move(GLFWwindow* window);
+
+		void OnCollide(const collision::Collision& collision) override;
 	};
 }