guess what

bq9.js

/*
 * Open all three doors to exit.
 *
 * The answer is 5.
 */
var stop = function(self) {
	self.thrusters.top(false);
	self.thrusters.left(false);
	self.thrusters.bottom(false);
	self.thrusters.right(false);
}

this.on("start", function() {
	this.thrusters.left(true);
	this.radar.angle(0);
  	this.radar.ping();
});

this.on("radar:hit", function(angle, distance) {
	console.log(distance);
	if (angle == 0) {
		if (Math.abs(distance - 370) < 10) {
      		stop(this);
	      	this.thrusters.bottom(true);
    	} else if (Math.abs(distance - 170) < 10) {
      		stop(this);
	      	this.thrusters.top(true);
			this.radar.angle(90);
	  		this.radar.ping();
    	} else {
	  		this.radar.ping();
    	}
    } else if (angle == 90) {
      	if (Math.abs(distance - 270) < 10) {
	      	this.thrusters.right(true);
        } else {
	      	this.radar.ping();
        }
    }
});

this.on("sensor:top", function(foo) {
  if (foo) {
    stop(this);
    this.thrusters.left(true);
  } else {
    this.radar.ping();
  }
});