Navigation systems for Bit's Quest — http://bitsquest.bitbucket.org/

bitsquest.js

var bit = this;

function navigate(thruster) {
  return function () {
    bit.thrusters[thruster](true);
    return {
      stop: function () {
        bit.thrusters[thruster](false);
      }
    };
  };
}

var north = navigate('bottom');
var east = navigate('left');
var south = navigate('top');
var west = navigate('right');