[bigcomfycouch]

pawn Код:

#define isnull(%1)                        (!%1[0] || (%1[0] == '\1' && !%1[1]))

COMMAND:goto(playerid, params[])
{
    new
        id = strval(params),
        Float:x,
        Float:y,
        Float:z;
    if (PlayerInfo[playerid][Admin] <= 0 && PlayerInfo[playerid][Helper] <= 0) return SendClientMessage(playerid, COLOR_RED, "You must be Helper/Admin to use that command.");
    if (isnull(params)) return SendClientMessage(playerid, COLOR_WHITE, "[INFO]: /goto [id]");
    GetPlayerPos(id, x, y, z);
    SetPlayerPos(playerid, x + 1, y + 1, z);
    return 1;
}

I'd recommend using sscanf.