Time for action – changing screens after the game is over

Now that we have renamed our game file, let's add in a scene transition so that our game is not stuck at the Game Over screen once game play is over. To change the screen, perform the following steps:

1. In our maingame.lua file, add in a new variable called local menuBtn, where all the other variables are initialized in the beginning of the code. Inside the callGameOver() function, add the following lines after the highScoreText code:

       local onMenuTouch = function( event )
         if event.phase == "release" then
           audio.play( btnSound )
           composer.gotoScene( "mainmenu", "fade", 500  )
   
         end
       end
   
       menuBtn = ui.newButton{
         defaultSrc = "menubtn.png",
         defaultX = 60,
         defaultY = 60,
         overSrc = "menubtn-over.png",
         overX = 60,
         overY = 60,
         onEvent = onMenuTouch,
         id = "MenuButton",
         text = "",
         -- Can use any font available per platform
         font = "Helvetica",...