programming questions: hide user, get distance to cell, get user-name, DB
I have some programming questions, maybe someone can point me to tutorials, infos how to archive those (I have read the four tutorials, but those dont cover that).
1.) I wonder if its possible to hide a user from other (for example make 'admin' invisible), how would that been done?
2.) I would get the distance a user has to a cell (for example to start an animation when one is near), how do I get this info?
3.) Is there a way to get the client name, (who clicks on a cell for example)?
4.) How do I get access/fields of the built-in DB, what do I need for such?
thanks in advance!