I am just starting to learn javascript. I am working on Warrior JS now. I have this code here. It runs fine with forward. However with backwards I get: Error: Cannot read property 'isBound' of undefined. This seems to occur when warrior.rescue() is changed to warrior.rescue('backward'). So if I leave everything forward but that I can replicate the problem that way too. I know the code isn't finished but I am trying to understand the error and where it is coming from. I am on Baby Steps Level 6 so I don't have warrior.pivot() yet.

Any insight would be great. Thanks.

class Player {
  constructor() {
    this.health = 20;
    this.lastHealth = 20;
    this.direction = 'forward';
  }
  playTurn(warrior) {
    if (warrior.feel(this.direction).isEmpty()) {
      this.walkorRest(warrior);
    } else {
      this.rescueOrAttack(warrior);
    }
    this.lastHealth = warrior.health();
  }
  isUnderAttack(warrior) {
    return warrior.health() < this.lastHealth;
  }
  fullHealth(warrior) {
    return warrior.health() === warrior.maxHealth();
  }
  walkorRest(warrior) {
    if (this.isUnderAttack(warrior) || this.fullHealth(warrior)) {
      warrior.walk(this.direction);
    } else {
      warrior.rest();
    }
  }
  rescueOrAttack(warrior) {
    if (!warrior.feel(this.direction).isEmpty()) {
      if (
        warrior
          .feel(this.direction)
          .getUnit()
          .isBound()
      ) {
        warrior.rescue(this.direction);
      } else {
        warrior.attack();
      }
    }
  }
}

WarriorJS

Cannot read property 'isBound' of undefined

Cannot read property 'isBound' of undefined

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