code: function checkAllowableRegions(touchCoordinates, x, y) {
      for (var i = 0; i < touchCoordinates.length; i += 2) {
        if (hit(touchCoordinates[i], touchCoordinates[i+1], x, y)) {
          touchCoordinates.splice(i, i + 2);
          return true; // allowable region
        }
      }
      return false; // No allowable region; bust it.
    }
docs: Checks a list of allowable regions against a click location. Returns true if the click should be allowed. Splices out the allowable region from the list after it has been used.