dplay_id
The unique identification number of a client. The number is sent to the client from the server after joining. On a server, it's always 0. A7.7


I tested the dplay_id variable on "Pong Multiplayer"
the value is always "9999" after joining ....

unique identification number of a client?

And what happens if a second client joins?

dplay_id works fine without any error or bug, I've used it for 10+ multiplayer projects.
I assume you are just displaying it incorrectly, for instance with a %4.0f or integer format. How do you know it's 9999?

I,m using this:

var meuid ;

PANEL* mostra ={layer = 55; digits(20, 60, 4 ,Arial#24bi, 1, meuid); flags = SHOW;}

....................

function on_server_event(var* received,var id)
{ if (EVENT_JOIN == event_type){ meuid = id; }


So Panel displays 9999

what about
error(str_for_num(NULL, id));

digits(20, 60, 4 ,Arial#24bi, 1, meuid);
-> 4 digits, and you complain that you cannot see more than 4 digits.

now using 12 digits:

digits(20, 60, 12 ,Arial#24bi, 1, meuid);

always displays 65536 now

dplay_ids oftentimes only show a difference in the fraction. However, this is irrelevant, the feature works.

using double shows correctly a random number in dplay_id:

double meuid ;
var mostrar;
PANEL* mostra ={layer = 55; digits(20, 60, 30 ,Arial#24bi, 1, meuid); flags = SHOW;}

Don't use doubles or the like for multiplayer code with lite-C, all functions and features (such as client_id) only expect or are vars and thus only guaranteed to work with those.

Writing for instance 10.3 in the digits field would give you 3 decimal places while using vars, too.