[decondelite]

I think something like this would be more suited:

pawn Code:

#define MAX_DELOCATIONS    12
enum DELIVER_INFO{Float:deX,Float:deY,Float:deZ,deTeam}
new gDeliverCoords[MAX_DELOCATIONS][DELIVER_INFO];

GetDeliverId(playerid)
{
    new deid,playerteam;
    playerteam=GetPlayerTeam(playerid);
    do deid=random(MAX_DELOCATIONS);
    while (gDeliverCoords[deid][deTeam]!=playerteam);
    return deid;
}

I'll let you think for the rest of the code.