The PVP/Adventure Lobby V. 2 (alpha) is a simple designed lobby room for adventure maps and pvp maps for 1 - 8 players.
Set the number of players by using the levers on one of the small sides. "Light-on" means "power off". Deactivated Cabins wil not open, when you step on their pressure plates. You can completelly deactivate 7 Cabines to reach the number of Players. Each player has his own cabin with a "ready-button" .
Press the Button one time to give ready-signal, a second push delets the ready-signal and opens the door of your cabin.
All players have to press their readybutton to get the game started. Each Player can be teleported by a seperated commandblock. The redstone-system automatically resets itsself after all players have been teleported.
Actually, this redstonesystem is everything else than easy and clearly structured, so only experienced Redstone-engeneers should adapt it.
Alternative Download: http://www.mediafire.com/download/9wk0jlchdp3kwhx/big-lobby.schematic