// setter sets value and complement
void setHealth(int value){
    health = value;
    healthComplement = ~value;
}

// getter checks if value was changed outside of the setter
int getHealth(){
    if(value != ~healthComplement){
        // launch some cheat-counter-measure, like crashing the game?
        exit;
    }
    return health;
}

class Player
{
  int m_Health;
  int m_RandomHealth;
  Random m_Rnd = new Random();

  public int Health {
    get
    {
      return m_Health ^ m_RandomHealth;
    }

    set
    {
      m_RandomHealth = m_Rnd.Next();
      m_Health = value ^ m_RandomHealth;
    }
  }
}

class Player
{
  int [] m_HealthArray; // [0] is random int, [1] is xored health
  Random m_Rnd = new Random();

  public Player() {
    this.Health = 100;
  }

  public int Health {
    get
    {
      int health = m_HealthArray[0] ^ m_HealthArray[1];
      Health = health; // reset to move in memory and change xor value
      return health;
    }

    set
    {
      m_HealthArray = new int[2];
      m_HealthArray[0] = m_Rnd.Next();
      m_HealthArray[1] = m_HealthArray[0] ^ value;
    }
  }
}

a = x+h; b = x-h
x = (a+b)/2; h = (a-b)/2

a = x-h; b = x+h
x = (a+b)/2; h = (b-a)/2