server/objects/movable.js check for collisions

gistfile1.js

Movable.prototype.doICollide = function(collidables) {
  var myPosition = this.position;
  var myNewPos = this.position.clone().add(this.velocity);

  // check if i collide with anything!
  for (var id in collidables) {
    if (collision(myPosition, myNewPos, collidables[id])) {
      return true;
    }
  }

  // i didn't collide!
  return false;
}