I am making adventure map and in the beginning people are talking to you and you see the town from above. I have seen in other adventure maps that when a door opens the player is put into spectator mode and see where the door is...but they can't move.

So what I'm trying to say is how to make a player see something in spectator mode but not be able to move.

Also if you know how to make it so that the player can't move but their head/view changes like if they were moving their heads that also would be nice :)