Creating a transform component

With the ability to attach and return components, let's get our first component built and added. We'll start with a simple one first. Currently, all objects have a position by default that's provided by the Object base class. Let's break this behavior into its own component.

Encapsulating transform behavior

Since we're converting an inheritance-based approach to a component-based one, the first task is to take the transform behavior out of the Object class. Currently, that consists of a single position variable and a function to both get and set that value.

Let's create a new class named TransformComponent and move this behavior into it, as follows:

#ifndef TRANSFORMCOMPONENT_H
#define TRANSFORMCOMPONENT_H

#include "Component.h"

class TransformComponent : public Component
{
public:
    TransformComponent();
    void SetPosition(sf::Vector2f position);
    sf::Vector2f&  GetPosition();

private:
    sf::Vector2f  m_position;
};
#endif

We'll also take the function...