my player.js from warriorjs challenge

player.js

class Player {

  playTurn(warrior) {
    this.dir = 'backward';
    this.warrior = warrior;
    this.saw = warrior.look(this.dir);
    this.checkSpaceBeforeAction();
    this.saveCurrentHealth();
  }

  checkSpaceBeforeAction() {
    if ( this.isWall() ) {
      this.changeDirection();

    } else if ( this.isCaptive() ) {
      this.warrior.rescue(this.dir);

    } else if (this.lookAheadToShoot() ) {
      this.warrior.shoot(this.dir);

    } else if ( this.goodToAttack() ) {
      this.warrior.attack(this.dir);

    } else if ( this.inFullHealth() || this.goodToCharge() ) {
      this.warrior.walk(this.dir);

    } else if ( this.goodToRetreat() ) {
      this.retreat()

    } else {
      this.warrior.rest();
    }
  }

  changeDirection() {
    this.warrior.pivot();
    // var change = this.isSpaceAttackable() && !this.underAttack() && this.inFullHealth();
    console.log('changed');
    // return change;
  }

  goodToAttack() {
    var attack = this.isSpaceAttackable() && (this.underAttack() || this.inFullHealth() );
    console.log('attack?', attack);
    return attack;
  }

  goodToCharge() {
    var charge = this.isEmpty() && this.underAttack() && this.warrior.health() > 10;
    console.log('change?', charge);
    return charge;
  }

  goodToRetreat() {
    var retreat = this.isEmpty() && this.underAttack() && this.warrior.health() < 10;
    console.log('retreat', retreat);
    return retreat;
  }

  underAttack() {
    var underAttack = this.oldHealth > this.warrior.health();
    console.log('underAttack', underAttack);
    return underAttack;
  }

  advanceOrRetreat() {
    if ( this.inFullHealth() || this.goodToCharge() ) {
      this.warrior.walk(this.dir);
    }
    else if ( this.goodToRetreat() ) {
      this.retreat()
    } else {
      this.warrior.rest();
    }
  }

  retreat() {
    this.warrior.walk('backward');
  }

  inFullHealth() {
    return this.warrior.health() === 20;
  }

  saveCurrentHealth() {
    this.oldHealth = this.warrior.health();
  }

  isEmpty(space) {
    if (space == null) {
      space = this.warrior.feel(this.dir);
    }
    return space.isEmpty();
  }

  isStairs(space) {
    if (space == null) {
      space = this.warrior.feel(this.dir);
    }
    return space.isStairs();
  }

  isCaptive(space){
    if (space == null) {
      space = this.warrior.feel(this.dir);
    }
    return space.isCaptive();
  }

  isSpaceAttackable(space) {
    if (space == null) {
      space = this.warrior.feel(this.dir);
    }
    return !this.isEmpty(space) && !this.isCaptive(space);
  }

  isWall(space) {
    if (space == null) {
      space = this.warrior.feel(this.dir);
    }
    return space.isWall();
  }

  lookAheadToShoot() {
    return this.checkForCaptive() && !this.canSeeTheFinish() && !this.pathIsAllClear() && !this.checkForWalls();
  }

  checkForCaptive() {
    var shoot = this.saw.every((function(_this) {
      return function(space, index, array) {
        if (_this.isCaptive(space) ) {
          return false;
        }
        return true;
      };
    })(this));
    console.log('shoot', shoot);
    return shoot;
  }

  checkForWalls() {
    var shoot = this.saw.every((function(_this) {
      return function(space, index, array) {
        if (_this.isWall(space) ) {
          return false;
        }
        return true;
      };
    })(this));
    console.log('shoot', shoot);
    return shoot;
  }

  pathIsAllClear() {
    var clear = this.saw.every((function(_this) {
      return function(space, index, array) {
        if (!_this.isEmpty(space) || _this.isStairs(space)) {
          return false;
        }
        return true;
      };
    })(this));
    console.log('all clear', clear);
    return clear;
  }



  canSeeTheFinish() {
    var stairs = this.saw.some((function(_this) {
      return function(space, index, array) {
        if (_this.isStairs(space) ) {
          return true;
        }
        return false;
      };
    })(this));
    console.log('stairs', stairs);
    return stairs;
  }

  // getCurrentDirection() {
  //   if (this.lastDir === 'backward') {
  //     this.dir = 'backward';
  //   } else {
  //     this.dir = 'forward';
  //   }

  // }

}

global.Player = Player;