primitive-obssesion.cpp

class Health{
private: 
    int health;
    Player& player;

public:

    Health(Player& player) : player(player) {}
    void change(int amount){
        health += amount;
        if (health > 100)
        {
            health = 100;
        }
        if (health < 0)
        {
            health = 0;
        }
        if (health < 25)
            player.speed = SLOW;
    }
};

//...

Health health;

void takePotion(int potionStrength)
{
    health.change(potionStrength);
}


void takeDamage(int damage)
{
    health.change(-potionStrength);
}

void fall()
{
    health.change(-5);
}