// Game framework code
class BaseCharacter
{
public:
    float GetHealth();
    BaseSpriteComponent* GetSpriteComponent();
protected:
    BaseSpriteComponent* sprite;
    float health;
};

// Game framework code
class PlatformerCharacter : BaseCharacter
{
public:
    void Move(float speed);
    void Jump();
    void Crouch();
    bool IsInAir();
    Physics2DComponent* GetPhysicsBodyComponent();

protected:
    Physics2DComponent* physics_body;
    float speed;
    bool in_air;
};

// Game framework code
class ScrollerCharacter : BaseCharacter
{
public:
    virtual void Move(Vector2D direction);

protected:
};

// Game framework code
class FireGun : public BaseWeapon
{
public:
    virtual void Fire() override;

protected:
    Particle2DEmitterComponent* particles;
};

// User game code
class MyPlayer : public PlatformerCharacter
{
public:
    void Fire();
    void SetWeapon(BaseWeapon* new_weapon);
    BaseWeapon* GetWeapon();

protected:
    BaseWeapon* weapon;
};