code: function(){
              var x = this.x,
                  y = this.y,
                  fieldRange = this.fovFieldRange,
                  direction = this.fovDirection,
                  maxViewDistance = this.fovMaxViewDistance;
              this.fov.update(x, y, fieldRange, direction, maxViewDistance, this);
          }
docs: Updates this.fov
  @method updateFov