Jason

#define FILTERSCRIPT
#include <a_samp>
#include <a_npc>

//Definitions-------------------------------------------------------------------

#define COLOR_YELLOW 0xFFFF00AA
#define COLOR_DARKGREEN 0x33AA33AA
#define COLOR_RED 0xAA3333AA
#define COLOR_WHITE 0xFFFFFFAA

enum pData
{
    Derby,
};
new pInfo[MAX_PLAYERS][pData];

//------------------------------------------------------------------------------

public OnPlayerCommandText(playerid, cmdtext[])
{

//Vehicles----------------------------------------------------------------------

    new vehicle1, vehicle2, vehicle3, vehicle4,	vehicle5, vehicle6, vehicle7, vehicle8, vehicle9;

	vehicle1 = AddStaticVehicle(504,-1506.0249,963.6489,1036.9043,308.2458,1,1); // Car 1
	vehicle2 = AddStaticVehicle(504,-1517.5923,996.9760,1037.4785,267.5391,1,1); // Car 2
	vehicle3 = AddStaticVehicle(504,-1496.8602,1034.8605,1038.1382,217.1305,1,1); // Car 3
	vehicle4 = AddStaticVehicle(504,-1459.6935,1052.6312,1038.3616,201.4902,1,1); // Car 4
	vehicle5 = AddStaticVehicle(504,-1415.9689,1059.4755,1038.3984,182.9101,1,1); // Car 5
	vehicle6 = AddStaticVehicle(504,-1371.5483,1058.7356,1038.3197,178.5217,1,1); // Car 6
	vehicle7 = AddStaticVehicle(504,-1327.7202,1052.9230,1038.1437,155.3537,1,1); // Car 7
	vehicle8 = AddStaticVehicle(504,-1290.2139,1026.1642,1037.8479,138.0186,1,1); // Car 8
	vehicle9 = AddStaticVehicle(504,-1285.0289,971.0375,1036.7104,56.0545,1,1); // Car 9
	LinkVehicleToInterior(vehicle1, 15);
	LinkVehicleToInterior(vehicle2, 15);
	LinkVehicleToInterior(vehicle3, 15);
	LinkVehicleToInterior(vehicle4, 15);
	LinkVehicleToInterior(vehicle5, 15);
	LinkVehicleToInterior(vehicle6, 15);
	LinkVehicleToInterior(vehicle7, 15);
	LinkVehicleToInterior(vehicle8, 15);
	LinkVehicleToInterior(vehicle9, 15);
	SetVehicleVirtualWorld(vehicle1, 999);
	SetVehicleVirtualWorld(vehicle2, 999);
	SetVehicleVirtualWorld(vehicle3, 999);
	SetVehicleVirtualWorld(vehicle4, 999);
	SetVehicleVirtualWorld(vehicle5, 999);
	SetVehicleVirtualWorld(vehicle6, 999);
	SetVehicleVirtualWorld(vehicle7, 999);
	SetVehicleVirtualWorld(vehicle8, 999);
	SetVehicleVirtualWorld(vehicle9, 999);

//Join/Leave Commands-----------------------------------------------------------

	if (strcmp(cmdtext, "/derbyjoin", true) == 0)
	{
 		if(pInfo[playerid][Derby] == 0)
        {
			SetPlayerVirtualWorld(playerid, 999);
			SetPlayerInterior(playerid, 15);
			new string[256], name[24]; GetPlayerName(playerid,name,24);
	    	format(string,256,"%s has joined the Derby. Type /derbyjoin to join them!",name);
			SendClientMessageToAll(COLOR_WHITE,string);
        	SendClientMessage(playerid,COLOR_YELLOW,"Welcome to the Derby, please wait patiently for the derby to commence.");
        	if(IsVehicleOccupied(vehicle1))
            {
                PutPlayerInVehicle(playerid,vehicle2,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle1,0);
                pInfo[playerid][Derby] = 1;
            }

            if(IsVehicleOccupied(vehicle2))
            {
                PutPlayerInVehicle(playerid,vehicle3,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle2,0);
                pInfo[playerid][Derby] = 1;
            }

            if(IsVehicleOccupied(vehicle3))
            {
                PutPlayerInVehicle(playerid,vehicle4,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle3,0);
                pInfo[playerid][Derby] = 1;
            }

            if(IsVehicleOccupied(vehicle4))
            {
                PutPlayerInVehicle(playerid,vehicle5,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle4,0);
                pInfo[playerid][Derby] = 1;
            }

            if(IsVehicleOccupied(vehicle5))
            {
                PutPlayerInVehicle(playerid,vehicle6,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle5,0);
                pInfo[playerid][Derby] = 1;
            }

            if(IsVehicleOccupied(vehicle6))
            {
                PutPlayerInVehicle(playerid,vehicle7,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle6,0);
                pInfo[playerid][Derby] = 1;
            }

			if(IsVehicleOccupied(vehicle7))
            {
                PutPlayerInVehicle(playerid,vehicle8,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle7,0);
                pInfo[playerid][Derby] = 1;
            }

			if(IsVehicleOccupied(vehicle8))
            {
                PutPlayerInVehicle(playerid,vehicle9,0);
                pInfo[playerid][Derby] = 1;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle8,0);
                pInfo[playerid][Derby] = 1;
            }

			if(IsVehicleOccupied(vehicle9))
            {
                SendClientMessage(playerid,0x33AA33AA,"The derby is full!");
                pInfo[playerid][Derby] = 0;
            }
            else
            {
                PutPlayerInVehicle(playerid,vehicle9,0);
                pInfo[playerid][Derby] = 1;
            }
        }
		return 1;
	}

	if (strcmp(cmdtext, "/derbyleave", true) == 0)
	{
    	pInfo[playerid][Derby] = 0;
	 	SetPlayerVirtualWorld(playerid, 0);
		SetPlayerInterior(playerid, 0);
		SetPlayerHealth(playerid, 0);
        new string[256], name[24]; GetPlayerName(playerid,name,24);
	    format(string,256,"%s has left the Derby.",name);
		SendClientMessageToAll(COLOR_WHITE,string);
		return 1;
	}

	return 0;
}

//Publics-----------------------------------------------------------------------

public OnPlayerDeath(playerid, killerid, reason)
{
        pInfo[playerid][Derby] = 0;
		return 1;
}

public OnPlayerConnect(playerid)
{
    pInfo[playerid][Derby] = 0;
    return 1;
}

public OnPlayerDisconnect(playerid)
{
    pInfo[playerid][Derby] = 0;
    return 1;
}

public OnPlayerSpawn(playerid)
{
    SetPlayerInterior(playerid,0);
    return 1;
}

//IsVehicleOccupied-------------------------------------------------------------

stock IsVehicleOccupied(vehicleid)
{
    for(new i = 0; i < MAX_PLAYERS; i++)
    {
        if(IsPlayerInVehicle(i,vehicleid))
        return 1;
    }
    return 0;
}

//------------------------------------------------------------------------------