action turner(){
  while(me){
    if(key_cur){ my.pan += time_step; }
    wait(1;
  }
}

action turner(){
  while(me){
    my.pan += time_step*key_cur;
    wait(1);
  }

function SpinFaster()
{
  var speed = 0;
  while(1)
  {
    my.pan += speed * key_cur;
    speed += 1*time_step; //you may adjust here for faster
    wait(1);                      //  spinning
  }

}