Package-level declarations

Rebuild login is sent as part of the login procedure as the very first packet, as this one contains information about everyone's low resolution position, allowing the player information packet to be initialized properly.

Rebuild normal is sent when the game requires a map reload without being in instances.

Rebuild region is used to send a dynamic map to the client, built up out of zones (8x8x1 tiles), allowing for any kind of unique instancing to occur.

Rebuild worldentity packet is used to build a new world entity block, which will be rendered in the root world for the player.