Miscellany

//above main()

new License[MAX_PLAYERS];
#define COLOR_GOLD 0xFFD700AA
forward LicenseCheck(playerid);


//the check to see if they are a driver

public OnPlayerStateChange(playerid, newstate, oldstate)
{
    if(IsPlayerConnected(playerid) && newstate == PLAYER_STATE_DRIVER)
    {
 	TogglePlayerControllable(playerid,0);
   	SendClientMessage(playerid,COLOR_GOLD,"Checking for Drivers License");
     	LicenseCheck(playerid);
    }
    return 1;
}


//license check

LicenseCheck(playerid)
{
    if(IsPlayerConnected(playerid) && License[playerid] == 1)
    {
	TogglePlayerControllable(playerid,1);
	SendClientMessage(playerid,COLOR_GOLD,"Drivers License Found! Please drive safely.");
    }
    else
    {
 	TogglePlayerControllable(playerid,1);
	SendClientMessage(playerid,COLOR_GOLD,"No Drivers License Found! You are not allowed to drive!");
	RemovePlayerFromVehicle(playerid);
    }
}


//the command I used to test if the above code worked

if (strcmp(cmdtext, "/givelicense", true) == 0)
{
    if(IsPlayerConnected(playerid) && License[playerid] == 0)
    {
        License[playerid] = 1;
	SendClientMessage(playerid,COLOR_GOLD,"You now have an Drivers License!");
    }
    else
    {
        SendClientMessage(playerid,COLOR_GOLD,"You already have an Drivers License.");
    }
    return 1;
}