[VitalRP]

pawn Code:

CMD:enter(playerid, params[])
{
    if(IsPlayerInRangeOfPoint(playerid, 7.0, 1570.9875, -1336.9447,16.4844))
    {
        SetPlayerPos(playerid, 1548.6855,-1364.6135,326.2109);
        GameTextForPlayer(playerid, "Welcome to the star tower!", 3000, 4)
    }
    else
    {
        SendClientMessage(playerid, COLOR, "You are not near an entrance!");
    }
    return 1;
}

EDIT:

Add this to your script aswell if you want a pickup.

pawn Code:

AddStaticPickup(1318, 1, 1570.9875, -1336.9447,16.4844, 0)