The Universal World Owner's Manual

First you'll want some way to initiate a race.. Sometimes you might want that to be a special command for admins, or you could do something automatic like this example:

Event( "OnTheHour", "" )
{
    $courseNum = 1
    *raceinit $courseNum 
    *announce The hourly race is about to begin. Click the 'Sign Up' button to join!
    *soundeffect 26
    *eao ShowRaceJoinNotification $courseNum
}

This example initiates a race every hour. The line *eao .. triggers a custom event for all players currently online (EAO is short for EventAllOnline) with the course number as a parameter. This custom event is used to trigger a popup on the screen of all players currently connected.. e.g

Event( "Custom", "ShowRaceJoinNotification" )
{
    $courseNum = $gParam[1]
    osdcreate( OSDNOTIFICATION2, "RaceOSD", "Race", 29 )
    osdminheight( 80 )
    osdadd(TEXT, 50, 10, 0, 0, "", "New Race starting.." )
    osdaddat(EXITBUTTON, 40, 40, 180, 30, "Join:$courseNum", "Sign up" )
    osdactivate()
}

If the player clicks the 'Sign Up' button, they'd trigger the RaceOSD join event which we might script like this:

Event( "OSDSelect", "RaceOSD:Join" )
{
	*setvehicle %PLAYER% 12
	*racejoin %PLAYER% $gParam[1]
}

Finally we need some way to start the race (using the *racestart command). Lets do a simple version using a timer.. Modify the original “OnTheHour” event so to include the line:

sysSetTimer( 30, "raceStartTimer", "$courseNum" )

which triggers the timer event 30 seconds after the 'OnTheHour'.

This event would look like:

Event( "Timer", "raceStartTimer" )
{
    $courseNum = $gParam[1]
    *racestart $courseNum
}

and off they go!