3 events that may shake a players screen, shrink the screen into a circle/box/star or fade it into a white mist for a selected amount of time. e.g.
OnActivate -> Player -> Shakescreen (amount of shake) (amount of time)
OnTeledoorEnter -> Player -> Blackout -> Box/Circle/Star (amount of time until screen opens up in the shape selected)
OnItemPickup -> Player -> Whiteout (amount of time until screen fades back in)
Blackout may be useful for smoother transition of teledoors,
Shakescreen may be useful for small earthquake effects,
Whiteout may be useful for gamemodes where an item is to be found, and once it is a player can "whiteout" and be teleported to another location without a sudden transition.
Separate request, a script where players falling from high distances and hitting the ground shakes the screen depending on how much of a speed they hit the ground.
Other requests:Bricks sheltering from rain & snow; http://forum.blockland.us/index.php?topic=206531.0
-> Centerprint(fade); http://forum.blockland.us/index.php?topic=206276.msg5720012#msg5720012