[Solved] Client must wait until it receives a packet from server?

Hello guys,

my problem is: the client, which has just connected to the remote server, must waiting in the "Download Terrain" screen until it gets a custom packet from the server.

I need this because client must use the data sent by the server before loading items and entities.

I think I can't use Thread.wait() or Thread.sleep() as the client can't stop totally as it needs to get and read the packet.

Any idea will be much appreciated,

Thanks,

Axel