How to get past level 9? about warriorjs HOT 3 CLOSED

You managed to get to level 9, so I'm sure your brain works pretty well! My recommendation: take a look at the source code, look at how the wizard's (and archer's) turn is played. The look ability returns an array containing the first three spaces in the given direction, so you can call any Space method on them, as you have done till now with feel.

When you start using abilities that return arrays, you should be familiar with the methods that can be called on an Array. You will find many of them useful (remember you can use the ES6 methods too). Here is an example:

class Player {
   // ...

  isEnemyInSight(warrior) {
    return warrior.look().findIndex((space) => space.isEnemy()) !== -1;
  }
}

Good luck!

from warriorjs.

You use ES2015 (ES6) in warriorjs. So why not use ES5 methods?
A better way in this example is to use Array.some() instead of Array.findIndex().

from warriorjs.

I wanted to illustrate the possibility of using ES6 methods, like Array.prototype.findIndex(). But yes, I agree with you on that Array.prototype.some() would be better for that case.

This would be even better, because it will check that the unit is the first in sight, besides being an enemy:

isEnemyInSight(warrior) {
  const unit = warrior.look().find((space) => !space.isEmpty());
  return unit && unit.isEnemy();
}

from warriorjs.