[Stinged]

pawn Код:

stock IsPlayerNearNPC(playerid, npcid)
{
    new Float:x, Float:y, Float:z;
    FCNPC_GetPosition(npcid, x, y, z);
    return IsPlayerInRangeOfPoint(playerid, 5.0, x, y, z); // Change 5.0 to the range you want.
}

Should work, not tested.