/* Remove user from room. when last user leave, room will be removed too
* 'public' room always exist.
* */
public void RemoveUserFromRoom(IUser user)
{
if (userMap[user] == nullRoomName) //user not in any room.
return;
string roomname = userMap[user];
roomMap[roomname].Remove(user);
userMap[user] = nullRoomName;
RoomBroadcast(roomname, "\r\n<= *user has left chat: "+user.GetStatus().UserName+"\r\n=> ");
user.SendToClient("\r\n<= *user has left chat: " + user.GetStatus().UserName + " (**this is you)\r\n");
//when last user leave
if (roomMap[roomname].Count == 0 && roomname != publicRoomName)
{
RemoveRoom(roomname);
}
}
