>>452-453
もうここまで来たら>>451をこうするだけじゃん?

 if(!isLocalPlayer){
  float tmp = prevX - transform.position.x;
  prevX = transform.position.x;

  if(tmp != 0){
   anim.SetBool ("Dash", true);
   transform.localScale = new Vector2((tmp > 0? 1: -1), 1);
  }else{
   anim.SetBool ("Dash", false);
  }
 }