Developing a Quarantine Simulation Prototype Using JavaScript

I am in need of a method to determine if any passengers are not healthy. If "isHealthy" is false for any passenger, then the wagon should be quarantined. Additionally, there may be an issue with the join prototype where "isHealthy" is only triggered if a passenger eats and has no food left. This means it is possible for a passenger to eat, have no food, but not trigger the "isHealthy" condition.

const Traveler = function (travelerName) {
    this.name = travelerName;
    this.food = 1;
    this.isHealthy = true;
};
Traveler.prototype.hunt = function () {
    this.food += 2;
    console.log(this.food);
};
Traveler.prototype.eat = function () {
    this.food -= 1;
    if (this.food === 1) {
    } else {
        this.food === 0;
        this.isHealthy = false;
    }
    console.log(this.food);
};

console.log(new Traveler("John"));

function Wagon(capacity) {
    this.capacity = capacity;
    this.passengers = [];
}
console.log(new Wagon(4));
Wagon.prototype.getAvailableSeatCount = function () {
    let seatingCapacity = this.capacity - this.passengers.length;
    console.log(seatingCapacity);
    return seatingCapacity;
};

Wagon.prototype.join = function (traveler) {
    console.log(this.capacity);
    let currentCapacity = this.capacity;
    if (currentCapacity <= this.passengers.length) {
        this.currentCapacity = 0;
    } else if (this.getAvailableSeatCount != 0) {
        this.passengers.push(traveler);
    }

    console.log(this.passengers);
};
Wagon.prototype.shouldQuarantine = function () {
    for (let i = 0; i < this.passengers.length; i++) {
        if (this.passengers[i].isHealthy) {
            return false;
        }
    }
};

Wagon.prototype.totalFood = function () {
    let totalFood = "";
    this.passengers.forEach(this.food);
    console.log(this.food);
};

Answer №1

When implementing the eat method in the Traveler class, it is important to first check if there is any food available. If so, decrement the food count by one and then verify if there is no more food left. In that case, update the isHealthy property to false.

Traveler.prototype.eat = function () {
  if (this.food > 0) {
    this.food -= 1;

    if (this.food === 0) {
      this.isHealthy = false;
    } 
  }
};

Furthermore, make sure to adjust the hunt method to restore the traveler's health after a successful hunt.

Traveler.prototype.hunt = function () {
  this.food += 2;
  this.isHealthy = true;
};

In the shouldQuarantine method of the Wagon class, rather than checking if all passengers are healthy, examine if any passenger is not healthy and return true in such cases.

If all passengers are deemed healthy, proceed with the loop until completion and return false afterwards.

Wagon.prototype.shouldQuarantine = function () {
  for (let i = 0; i < this.passengers.length; i++) {
    if (!this.passengers[i].isHealthy) {
      return true;
    }
  }

  return false;
};

An alternative approach could involve using the some method on the this.passengers array to identify any unhealthy passengers.

Wagon.prototype.shouldQuarantine = function () {
  return this.passengers.some(
    passenger => passenger.isHealthy === false
  );
};

The join method can be simplified as well. Simply utilize the result obtained from this.getAvailableSeatCount() to determine if there are vacant seats. Add the new traveler only if the result is not 0.

Wagon.prototype.join = function (traveler) {
  const availableSeats = this.getAvailableSeatCount();
  if (availableSeats !== 0) {
    this.passengers.push(traveler);
  }
};

Lastly, I observed an issue with the totalFood method. It seems to not function as intended, but I'll leave it to your discretion to resolve. Hint: totalFood should output a number. Iterate through each passenger and increment the totalFood value by their respective amount of food.

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