[iJumbo]

Define a new array

pawn Код:

new Checkpoint[MAX_PLAYERS];

Where you create the frist checkpoint

pawn Код:

SetPlayerCheckpoint(playerid,your frist checkpoint settings..
Checkpoint[playerid] = 1;

In OnPlayerEnterCheckpoint(playerid)

pawn Код:

public OnPlayerEnterCheckpoint(playerid)
{
    if(Checkpoint[playerid] == 1) {
        DisablePlayerCheckpoint(playerid);
        SendClientMessage(playerid,COLOR_ORANGE,"Drive back to docks!");
        SetPlayerCheckpoint(playerid,2462.9810,-2097.6760,13.5469, 5.0);
        Checkpoint[playerid] = 2;
    } else if(Checkpoint[playerid] == 2) {
        DisablePlayerCheckpoint(playerid);
        GivePlayerMoney(playerid,1000);
        SendClientMessage(playerid,COLOR_ORANGE,"You have finished delivery!");
        DestroyVehicle(GetPlayerVehicleID(playerid));
        Checkpoint[playerid] = 0;
    }
    return 1;
}