Doom zscript GZdoom run at level start

 class HelloWorldHandler : EventHandler
 {
     override void WorldLoaded (WorldEvent e)
     {

          //displayes messages to console
         console.printf("Hello World!");
         Console.Printf(TEXTCOLOR_BLUE .. "Hello\n");

         //Play a Sound
         S_StartSound ("grunt/death", CHAN_VOICE);
     }
 }

  // Put this in a MAPINFO lump
 gameinfo
 {
     AddEventHandlers = "HelloWorldHandler"
 }