game with corona

Code block in lua file
– Define a group
local gameBoardGroup = display.newGroup()
– Define background to display count down
local countDownOverlay = display.newRect(0, 0, displayWidth, displayHeight)
countDownOverlay:setFillColor(140, 140, 140)    – Set the color of the block
countDownOverlay.alpha = 0.5            – Define opacity to make it translucent
– Insert backround to the display group
gameBoardGroup : insert( countDownOverlay )
– Define label to display number
local countDownText = display.newText( “”,0, 0, native.systemFont, displayHeight * 0.5 )
countDownText:setTextColor( 131, 255, 131 )      
         
 – Define text color
countDownText:setReferencePoint( display.TopLeftReferencePoint )    – Define text position reference
– Insert text to the display group
gameBoardGroup : insert( countDownText )


– Set the text position at center
countDownText.x = ((displayWidth * 0.5) – (countDownText.contentWidth * 0.5))
countDownText.y = ((displayHeight * 0.5) – (countDownText.contentHeight * 0.5))
– Define count down number
local countDownNum = 3
– Define function to show countdown numbers
local showCountDown = function()

– Condition to show and hide countdown
    if countDownNum == 0 then
        countDownText:removeSelf()    – Remove countdown text
        countDownOverlay:removeSelf()    – Remove countdown background        
        – TODO : Code to start the game        
    else    – Condition to display countdown numbers
        countDownText.text = countDownNum
    end
    countDownNum = countDownNum – 1
end    
– Defined timer to strat the countdown
timer.performWithDelay( 1000, showCountDown, 4 )