I was wondering how to make an arena simliar to that of Mob Arena and Battle Arena. People have to not be able to break blocks in this arena (or have them be rolled back) and they have to not be able to escape it either. I assume something with WorldEdit and WorldGuard would have to be done for that. Thanks, Lactem I shall try something with ProtocolLib. EDIT by Moderator: merged posts, please use the edit button instead of double posting.
Define a region (like a cuboid, have a minimum and maximum point) and check whether the block you break/place (BlockBreakEvent, BlockPlaceEvent) is inside that region