exercism/cpp/ellens-alien-game/ellens_alien_game.cpp

namespace targets {
class Alien {
public:
  Alien(int x, int y) {
    x_coordinate = x;
    y_coordinate = y;
    health = 3;
  }

  int get_health() { return health; }

  bool hit() {
    if (health > 0) {
      health -= 1;
      return true;
    }

    return false;
  }

  bool is_alive() { return health > 0; }

  bool teleport(int x_new, int y_new) {
    x_coordinate = x_new;
    y_coordinate = y_new;
    return true;
  }

  bool collision_detection(Alien other_alien) {
    if (x_coordinate == other_alien.x_coordinate &&
        y_coordinate == other_alien.y_coordinate) {
      return true;
    }

    return false;
  }

  int x_coordinate, y_coordinate;

private:
  int health;
};

} // namespace targets