void OnCollisionEnter(Collision col)
{
PlayerSelector player = col.gameObject.transform.root.GetComponent <PlayerSelector>();
if ((int)player.GetMode() == 2)
{
if (identity == 2)
{
doTask(player);
}
}
else if ((int)player.GetMode() == 3 && 3 == identity)
{
if (identity == 3)
{
doTask(player);
}
}
}