[Skylar Paul]

pawn Код:

new Float:Position[3];

GetPlayerPos(PersonWhoYourTooFarAwayFrom, Position[0], Position[1], Position[2]);

if(!IsPlayerinRangeOfPoint(playerid, 30, Position[0], Position[1], Position[2])) return SendClientMessage(playerid, -1, "You're too far away!");
else
{
//your code
}

Is that what you're looking for?