[TzAkS.]

Use a function like

Код:

new IsAtDMArea[MAX_PLAYERS];

To OnPlayerConnect

Код:

IsAtDMArea[playerid] = 0;

At command

Код:

if(IsAtDMArea[playerid] == 1) return SendClientMessage(playerid, -1, "You already are at dm area");

And

Код:

IsAtDMArea[playerid] = 1;

And when he leaves or die set it to 0